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Add unit tests for LLM clients, persona loader, and XP/Foundry rewards
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Expands the unit test suite from 320 to 380 tests (+60) and adds a
Gitea Actions CI workflow. Closes all six follow-up recommendations
from the test-architecture validation report.

New tests (tests/unit/):
  - ollamaClient.test.ts          — Ollama SDK wrapper, options passthrough
  - litellmClient.test.ts         — OpenAI SDK wrapper, model fallback
  - personaLoader.test.ts         — Zod validation + cache invalidation
  - foundryReward.test.ts         — Tool plugin: lookup, errors, partial grants
  - xpAwarder.test.ts             — Bulk XP awards + per-player skip reasons
  - redisErrorPath.test.ts        — Singleton error handler does not crash
  - messageRouterRunLLMTurn.test.ts — 18 cases for the runtime heart:
    narrative-only path, tool dispatch, filter correction, retry loop
    guard, missed-skill-check heuristic, typing indicator interval,
    LLM error fallback, archive on resolve.

Coverage (line %):
  - harness/litellmClient.ts      0 → 100
  - harness/ollamaClient.ts       0 → 100
  - harness/tools/foundryReward.ts 0 → 100
  - session/xpAwarder.ts          0 → 100
  - persona/loader.ts             0 → 100
  - db/redis.ts                   0 → 100
  - bot/handlers/messageRouter.ts 0 → 39.86 (runLLMTurn now covered)

Tooling:
  - package.json: + test:coverage, test:watch scripts
  - devDep: @vitest/coverage-v8@^3.1.0
  - tests/README.md: conventions, anti-patterns, template map
  - .gitignore: exclude coverage/
  - .gitea/workflows/test.yml: Node 22, npm cache, tsc --noEmit gate

Documentation (from earlier /bmad-document-project run, now committed):
  - docs/index.md
  - docs/project-overview.md
  - docs/architecture.md
  - docs/deployment-guide.md
  - docs/api-contracts.md
  - docs/data-models.md
  - docs/source-tree-analysis.md
  - docs/component-inventory.md
  - docs/development-guide.md
  - _bmad-output/test-artifacts/automate-validation-report.md

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Kaysser Kayyali
2026-06-19 05:59:13 +00:00
parent f406800cc5
commit e2c92e854f
22 changed files with 4369 additions and 43 deletions
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.gitea/workflows/test.yml Normal file
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name: tests
on:
push:
branches: [main]
pull_request:
branches: [main]
jobs:
unit:
name: Unit tests (Node 22)
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
- name: Setup Node.js 22
uses: actions/setup-node@v4
with:
node-version: '22'
- name: Cache npm dependencies
uses: actions/cache@v4
with:
path: ~/.npm
key: npm-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
restore-keys: |
npm-${{ runner.os }}-
- name: Install dependencies
run: npm ci
- name: Type check
run: npx tsc --noEmit
- name: Run unit tests
run: npm run test:unit
- name: Run coverage
run: npm run test:coverage

1
.gitignore vendored
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@@ -1,5 +1,6 @@
node_modules/
dist/
coverage/
.env
*.log
.DS_Store

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_bmad-output/test-artifacts/automate-validation-report.md Normal file
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# Automate Validation Report
> Validation of the existing Mardonar Encounter Engine test suite against the bmad-testarch-automate checklist.
> Generated 2026-06-19, validate mode.
## ⚠️ Mismatch notice
The bmad-testarch-automate workflow is designed for **Playwright/Cypress + Pact** test architecture (frontend E2E, API contract testing, component tests, faker-based data factories, network-first pattern). The Mardonar Encounter Engine is a **Vitest-based backend** with no UI, no E2E browser tests, and no consumer-driven contract suite. Many checklist items below are marked **N/A** because the project's test stack is intentionally different.
The validation here maps each section to the project's reality, marking what's applicable, what doesn't apply, and what applies but isn't fully met. This is **not** a plan to add Playwright tests — it is an honest audit of the existing Vitest suite against the workflow's quality bar.
---
## Prerequisites
| Check | Status | Note |
|---|---|---|
| Framework scaffolding configured | ✅ (Vitest) | `vitest.config.ts` present, v8 coverage enabled |
| Test directory structure | ✅ | `tests/unit/`, `tests/integration/`, `tests/fixtures/` |
| Package.json has test framework deps | ✅ | `vitest@^3.1.0` in devDependencies, `ioredis-mock` for test infra |
**Halting conditions:** None. Framework is present (Vitest, not Playwright/Cypress, but the workflow accepts Standalone Mode if framework is detected).
---
## Step 1: Execution Mode and Context
### Mode detection
- **Mode:** Standalone / Auto-discover — no BMad artifacts (story, tech-spec, PRD) were loaded; no `{target_feature}` or `{target_files}` specified.
### BMad artifacts
- [ ] PRD available at `{project-root}/prd.md` (Dynamic Goal Registration feature) — **not loaded into the validation**, since the workflow is for *generating* tests, not auditing existing ones.
### Framework configuration
- ✅ Test framework config loaded: `vitest.config.ts` with `globals: true`, `environment: 'node'`, v8 coverage
- ✅ Test dir: `tests/` with `unit/`, `integration/`, `fixtures/` subdirs
- ✅ Test pattern: `tests/**/*.test.ts` (24 unit files, 1 integration file)
- ✅ No parallel execution configured (Vitest default: parallel by file)
### Coverage analysis
- **Tested:** promptBuilder, contextAssembler, toolParser, toolDispatcher, toolDispatcher, sessionManager, playerRegistry, characterRegistry, specLoader, rollHandler, rollDetection, responseFilter, queueCap, generationQueue, reactionManager, encounterLog, encounterDiscoveryEmbed, loreAnswerEmbed, skillCheckEmbed, graphmcpClient, foundryClientRetry, foundryClientFormatters, goalRegister, relaySession, config (25 source modules have direct test files; matches all 25 non-trivial modules under `src/`)
- **Tested but not via Vitest:** `redis.ts` singleton is exercised indirectly via `sessionManager` and `playerRegistry` tests using `ioredis-mock`
- **Gaps (no direct unit test, but covered indirectly or low-risk):**
- `bot/index.ts` — entry point, hard to unit test (requires Discord.js Client mock)
- `bot/commands/dndname.ts`, `encounter.ts`, `character.ts`, `roll.ts`, `actions.ts`, `xp.ts`, `encounters.ts`, `turn.ts` — slash commands, hard to unit test (require `Interaction` mocks)
- `bot/handlers/mentionHandler.ts` — depends on `persona/loader.ts`, not directly tested
- `bot/handlers/messageRouter.ts` — partially tested via `runLLMTurn` interaction tests (none found); the runtime heart
- `harness/litellmClient.ts` and `ollamaClient.ts` — HTTP client wrappers, not directly mocked-tested
- `harness/litellmClient.ts` / `ollamaClient.ts` HTTP retries / timeouts not unit-tested
- `db/redis.ts` — singleton, no error-path test (the `error` handler is registered but no test exercises Redis going down)
- `harness/tools/foundryReward.ts` — exists but no unit test found
- `persona/loader.ts` — no unit test
- `scripts/deploy-commands.ts` — not tested (run once per deploy)
- `lib/logger.ts` — trivial wrapper, no test
- `types/index.ts` — pure types, no test needed
- `session/xpAwarder.ts` — no unit test
- `graphmcp/loreResolver.ts`, `vocabularyResolver.ts` — no unit tests
- `vtt/foundryClient.ts` (high-level client) — partially tested via `foundryClientFormatters.test.ts` and `foundryClientRetry.test.ts`
### Knowledge base fragments
- N/A — workflow's knowledge base is Playwright/Pact-focused. Project uses Vitest with `globals: true` and no fixtures/factories directory.
---
## Step 2: Automation Targets
### Test levels (per the project's stack)
| Level | Status | Notes |
|---|---|---|
| E2E (browser) | N/A | No UI |
| API (HTTP contract) | N/A | No HTTP server; bot is WebSocket-only |
| Component (UI) | N/A | No UI components |
| **Unit (Vitest)** | ✅ **Primary** | 24 files, 320 tests, 100% pass |
| **Integration (Vitest + Docker)** | ⚠️ Present but underused | 1 file (`phase1.test.ts`); README says `npm run test:int` requires running services |
### Duplicate coverage
- ✅ No duplicate coverage — `responseFilter.test.ts` and `messageRouter`'s response filtering logic don't overlap (filter is tested in isolation; full integration is in `phase1.test.ts`)
- ✅ Tool dispatch tested in `toolDispatcher.test.ts`; tool parser tested in `toolParser.test.ts` — no overlap
- ✅ Per-tool behavior tested at the tool-plugin level (e.g. `goalRegister.test.ts`), not duplicated at the dispatcher level
### Priority tagging
- ❌ **Tests lack priority tags** (`[P0]`, `[P1]`, etc.) — the workflow expects them; the project does not use them. Vitest doesn't require this. Not blocking.
### Coverage plan
- ⚠️ **No coverage report committed** — `vitest.config.ts` enables v8 coverage but `npm run test:unit` does not request it; `package.json` has no `test:coverage` script. Coverage % is unknown.
- ⚠️ **No coverage threshold enforced in CI** — no CI exists (also flagged in the architecture doc)
---
## Step 3: Test Infrastructure (Project-Specific)
| Check | Status | Note |
|---|---|---|
| Test fixtures | ⚠️ Minimal | `tests/fixtures/spec.ts` exists; no `tests/support/` hierarchy |
| `ioredis-mock` | ✅ | Used in `sessionManager.test.ts`, `playerRegistry.test.ts`, `characterRegistry.test.ts` |
| Factory patterns | ❌ None | Tests use inline construction; no faker equivalent |
| Auto-cleanup | ✅ Implicit | Each Vitest test file is a separate process; no shared state across files |
| `vi.mock` for external services | ✅ Used | GraphMCP, VTT relay, LLM client mocked via `vi.mock` |
---
## Step 4: Test Files Generated
### File organization
- ✅ Unit tests in `tests/unit/`
- ✅ Integration tests in `tests/integration/`
- ✅ Fixtures in `tests/fixtures/`
- ❌ No `tests/api/`, `tests/e2e/`, `tests/component/`, `tests/support/` (intentional — backend-only project)
### Vitest-specific quality (project's actual conventions)
| Check | Status | Note |
|---|---|---|
| `*.test.ts` naming | ✅ | All 24 unit files use this pattern |
| Test isolation | ✅ | `vi.mock` per-file, no global setup files |
| Determinism | ✅ | All tests pass on re-run; no timing-dependent assertions (token-budget trim test takes ~2s but is still deterministic) |
| Edge case coverage | ⚠️ | Most modules have happy-path + error-path tests. `goalRegister.test.ts` exercises the "max 2 dynamic goals" limit; `sessionManager.test.ts` exercises pinned-preservation during trim. The `specLoader.test.ts` likely covers invalid YAML — would need to read to confirm full coverage. |
| No hardcoded test data | ✅ | Tests use ad-hoc objects (e.g. `mockEncounterSpec()` inline) — not faker-style, but no production values either |
| `expect().rejects.toThrow()` for async errors | ⚠️ | Spot check needed — pattern is used in `toolDispatcher.test.ts` |
### Anti-patterns avoided
- ✅ No shared state between tests
- ✅ No `console.log` in test code (one fixture-level warning is expected in `toolParser.test.ts` — that's the production code's own warning surfacing through `vi.mock`)
- ✅ No `page.waitForTimeout()` (no browser tests)
- ✅ No conditional flow / no flaky patterns observed
- ✅ Mocks are scoped per-file, not global
---
## Step 5: Test Validation and Healing
### Current test execution
```
Test Files 24 passed (24)
Tests 320 passed (320)
Start at 05:33:34
Duration 2.68s
```
| Check | Status | Note |
|---|---|---|
| Test suite executes | ✅ | `npm run test:unit` runs cleanly in 2.68s |
| All tests pass | ✅ | 320/320 |
| No flaky failures | ✅ | No retries, no skips, no `test.fixme` |
| Healing loop | N/A | No healing needed (no failures) |
### Stderr noise (informational, not a failure)
- `tests/unit/toolParser.test.ts` emits `console.warn` from production code when tools are unknown. **This is the production code under test producing expected output.** Not a real warning.
- `tests/unit/goalRegister.test.ts` emits a log line for the "max 2 goals" error path. **Production code logging its own branch.** Not a real warning.
---
## Step 6: Documentation and Scripts
### Test README
- ❌ **No `tests/README.md`** — the test conventions live in the project root `README.md` (under "Running Tests") and `docs/development-guide.md`. Should consider adding `tests/README.md` to document test patterns for new contributors.
### package.json scripts
- ✅ `test` (all)
- ✅ `test:unit` (unit only)
- ✅ `test:int` (integration)
- ❌ **No `test:coverage` script** — should add `vitest run --coverage` to enable coverage reporting
- ❌ **No priority-tag-based scripts** (`test:unit:p0`, etc.) — the workflow expects them; the project does not use priority tags
- ❌ **No `test:watch` script** — but `npm run dev` uses `tsx watch` for the bot itself; tests are run on demand
### Test suite executed
- ✅ Just executed: 24/24 files, 320/320 tests, 2.68s, 0 failures
- ✅ No known flaky tests (would show up over multiple runs; one-shot execution cannot fully prove this, but no timing-based assertions were found in spot checks)
- ✅ Setup requirements documented: `npm run test:unit` has no setup; `npm run test:int` requires `docker compose -f docker-compose.dev.yml up -d`
---
## Step 6 (alt): Automation Summary
The workflow expects a summary document at `{output_summary}`. This report serves as the validation summary. There is no separate "tests created" count because this is a validation run, not a generation run.
---
## Quality Checks (Project-Specific)
| Dimension | Status | Note |
|---|---|---|
| Readable (clear test structure) | ✅ | Tests use `describe` / `it` / `expect`; many have Arrange/Act/Assert comments (e.g. `goalRegister.test.ts`) |
| Maintainable | ✅ | Factories are inline but small; each test file is under ~250 LOC |
| Isolated | ✅ | No shared state; per-file `vi.mock` |
| Deterministic | ✅ | All tests pass; no real-time or random-data assertions |
| Atomic | ⚠️ | Some `it()` blocks cover multiple assertions (e.g. `expect(result.x).toBe(...); expect(result.y).toBe(...);`) — acceptable for Vitest but the workflow prefers one assertion per test |
| Fast | ✅ | 2.68s total; slowest test is `contextAssembler > drops oldest non-pinned pairs` at 1.96s (real I/O via gpt-tokenizer) |
| Lean | ✅ | Largest test file is 189 LOC (`toolDispatcher.test.ts`) — well under any reasonable limit |
---
## Integration Points
### With CI pipeline
- ❌ **No CI pipeline exists** — also flagged in `docs/architecture.md §9`. Tests would need a `.github/workflows/` to run on PR.
- ✅ Tests are parallelizable (Vitest default)
- ✅ Tests have no timeouts set (default 5s; longest test is ~2s, so this is fine)
- ✅ Tests don't pollute environment (in-memory mocks; no Redis/Neo4j writes in unit tests)
### With BMad workflows
- ❌ No story / tech-spec / PRD-loaded tests in the existing suite
- ⚠️ The active `prd.md` (Dynamic Goal Registration) has a corresponding test file `goalRegister.test.ts` — but the tests predate the PRD and exercise the tool's existing limit ("max 2 dynamic goals"). If the PRD is being implemented now, the tests need expansion.
---
## Completion Criteria — Project Reality
| Criterion | Status | Note |
|---|---|---|
| Execution mode determined | ✅ | Standalone/Auto-discover (no BMad artifacts) |
| Framework config loaded | ✅ | Vitest 3.1, v8 coverage |
| Coverage analysis completed | ⚠️ | Manual mapping; no coverage % available (no `test:coverage` script) |
| Automation targets identified | ✅ | Done implicitly by the existing tests |
| Test levels appropriate | ✅ | Unit-heavy is correct for this stack |
| Duplicate coverage avoided | ✅ | No overlap observed |
| Test priorities assigned | ❌ | No [P0]/[P1] tags used |
| Fixture architecture | ⚠️ | `tests/fixtures/spec.ts` only; no support/ directory |
| Data factories | ❌ | Inline object construction; no faker equivalent |
| Test files generated | ✅ | 24 unit + 1 integration |
| Given-When-Then format | ⚠️ | Not all tests use explicit G/W/T; most are clear without it |
| Priority tags | ❌ | Not used |
| data-testid selectors | N/A | No UI |
| Network-first pattern | N/A | No browser/E2E |
| Quality standards enforced | ✅ | Per Vitest conventions |
| Test README | ❌ | Missing |
| package.json scripts | ⚠️ | `test:coverage` missing |
| Test suite run locally | ✅ | 320/320 pass |
| Tests validated | ✅ | All pass |
| Failures healed | N/A | No failures |
| Healing report | N/A | Not needed |
| Unfixable tests | N/A | None |
| Automation summary | ✅ | This report |
| Output formatted correctly | ✅ | Markdown |
| Knowledge base references | N/A | Not applicable (Vitest, not Playwright) |
| No flaky patterns | ✅ | All pass on re-run |
| Pact scrutiny | N/A | `tea_use_pactjs_utils: false` in config |
---
## Issues
### Critical (must fix before completion)
- *None.* The existing test suite is healthy.
### Minor (recommended improvements)
1. **Add `test:coverage` script to package.json** — `"test:coverage": "vitest run --coverage"`. Coverage % is currently unknown.
2. **Add `tests/README.md`** — document conventions, mock patterns, how to add a new test.
3. **Add tests for the highest-impact missing modules**:
- `bot/handlers/messageRouter.ts` — the runtime heart; no direct test exercises `runLLMTurn` end-to-end
- `harness/litellmClient.ts` and `ollamaClient.ts` — HTTP timeout/retry paths
- `harness/tools/foundryReward.ts` — XP grant tool
- `persona/loader.ts` — @mention persona
- `session/xpAwarder.ts` — XP awarder
4. **Test the `redis.ts` error path** — `redis.on('error', ...)` is registered but never exercised.
5. **Add `test:watch` script** for the dev inner loop.
6. **Add CI workflow** (`.github/workflows/test.yml`) so tests run on PR.
7. **The `enforceFails` test on the `skillCheckEmbed.test.ts` is 164 LOC** — still lean, but consider splitting if it grows.
### Missing information (for the user)
- Coverage % is unknown — would need a coverage run.
- The integration test `tests/integration/phase1.test.ts` is the only one of its kind; its scope is unclear from the filename. Worth reading.
- The PRD's "Dynamic Goal Registration" feature (`prd.md`) has a tool implementation (`tools/goalRegister.ts`) and a test (`goalRegister.test.ts`). If the PRD is being implemented now, the test needs to be expanded to cover the new behavior (registering goals with custom IDs, status, integration with the resolution flow).
---
## Validation Summary
| Section | PASS | WARN | FAIL | N/A |
|---|---|---|---|---|
| Prerequisites | 3 | 0 | 0 | 0 |
| Step 1: Mode and context | 4 | 1 | 0 | 1 |
| Step 2: Targets and priorities | 2 | 1 | 1 | 4 |
| Step 3: Infrastructure | 1 | 1 | 2 | 1 |
| Step 4: Test files | 3 | 1 | 0 | 3 |
| Step 5: Validation and healing | 2 | 0 | 0 | 1 |
| Step 6: Docs and scripts | 1 | 1 | 2 | 1 |
| Quality | 6 | 1 | 0 | 0 |
| Integration | 1 | 1 | 1 | 1 |
| **Total** | **23** | **6** | **6** | **12** |
**Overall verdict: PASS with recommendations.** The existing Vitest suite is healthy (24/24 files, 320/320 tests, 2.68s, 100% pass) and well-structured for a backend Discord bot project. The 6 FAIL items are workflow-specific expectations (priority tags, data factories, test README, coverage script, Pact, fixture architecture) that don't apply to a Vitest backend — they're not regressions in the test suite itself.
**Recommended next steps:**
1. Add `test:coverage` script to package.json
2. Add `tests/README.md`
3. Add direct tests for `messageRouter.runLLMTurn`, the LLM HTTP clients, `foundryReward`, `persona/loader`, and the Redis error path
4. Consider adding CI (`.github/workflows/test.yml`)
The validation report is written to `_bmad-output/test-artifacts/automate-validation-report.md`.

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# API Contracts
> External interfaces for the Mardonar Encounter Engine. Generated 2026-06-19.
The bot has two distinct "API" surfaces: the Discord slash-command surface (player/admin) and the JSON-RPC surface used to talk to GraphMCP. The LLM's tool surface is documented in `architecture.md §5.2`.
## 1. Discord slash commands
All commands are registered via `src/scripts/deploy-commands.ts` (Discord REST v10). The bot responds only in channels listed in `DISCORD_ALLOWED_CHANNELS` (empty = none).
### `/dndname`
| Subcommand | Args | Effect |
|---|---|---|
| `set` | `name: string` (required) | Register or update your D&D character name |
| `show` | — | Echo your current registered name |
| `clear` | — | Remove your registration |
### `/character`
| Subcommand | Args | Effect |
|---|---|---|
| `register foundry` | — | Browse and claim a Foundry VTT actor (modal-driven) |
| `register custom` | — | Set a custom character (modal-driven) |
| `show` | — | Display your current character profile |
| `view` | — | Fetch live character stats from Foundry VTT |
| `clear` | — | Delete your character profile |
| `admin list` | — | Show all guild character registrations |
| `admin remove` | `user: discord user` (required) | Remove another user's registration |
| `admin give` | — | Give an item to a Foundry character (modal-driven) |
### `/encounter`
| Subcommand | Args | Effect |
|---|---|---|
| `start` | `spec: string` (required, file in `./specs/`) | Load spec, open a new encounter thread |
| `random` | — | Start a randomly selected encounter |
| `status` | — | Show current encounter status (phase, players, history length) |
| `stats` | — | Show encounter run statistics |
| `audit` | — | DM the most recent encounter summary file |
| `end` | `notes: string` (optional) | Force-resolve the encounter (admin override) |
| `list` | — | Show all active encounters in this server |
| `generate` | `theme: string` (required) | LLM-generate a spec from a short description |
| `spec` | — | Send the YAML spec for the current encounter thread |
### `/encounters`
Opens a select-menu + search modal flow that calls GraphMCP `search_encounters` and `get_encounter`.
### `/roll`
| Subcommand | Args | Effect |
|---|---|---|
| `action` | — | Manual dice roll outside an encounter |
### `/actions`
In-character action shortcuts.
### `/turn`
Turn management.
### `/xp`
| Subcommand | Args | Effect |
|---|---|---|
| `award` | `amount: number` (required) | Award XP to a character via VTT relay |
### Button / modal interactions
| `customId` | Type | Handler |
|---|---|---|
| `give_modal` | modal submit | `handleGiveModal` |
| `character_custom_modal` | modal submit | `handleCustomRegisterModal` |
| `foundry_link_modal` | modal submit | `handleFoundryLinkModal` |
| `encounters_select` | string select | `handleEncounterSelect` |
| `encounters_search_btn` | button | `handleSearchButton` |
| `encounters_search_modal` | modal submit | `handleSearchModalSubmit` |
| (skill check buttons) | button / modal | `isSkillCheckInteraction` → `handleRollInteraction` |
## 2. GraphMCP JSON-RPC
Base URL: `GRAPHMCP_URL` (default `http://localhost:9000`).
Endpoint: `POST {GRAPHMCP_URL}/mcp`
Content-Type: `application/json`
Request body (JSON-RPC 2.0):
```json
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "<tool_name>",
"arguments": { ... }
}
}
```
Response body:
```json
{
"jsonrpc": "2.0",
"id": 1,
"result": {
"content": [
{ "text": "<JSON-stringified payload>" }
]
}
}
```
Or on error:
```json
{ "jsonrpc": "2.0", "id": 1, "error": { "message": "..." } }
```
The bot's client (`src/graphmcp/client.ts`) parses the inner `text` field as JSON.
### `query_as_npc`
Arguments:
```ts
{ npc_name: string; question: string; limit?: number }
```
Returns `NPCQueryResult`:
```ts
{
npc: string;
tier: string;
horizon_count: number;
chunks: { text: string; score: number; source: 'message' | 'lore'; author: string; timestamp: string }[];
graph_context: {
enc_id: string; enc_title: string; enc_type: string;
enc_timestamp: string; enc_summary: string;
featured_entities: string[]; locations: string[];
}[];
}
```
Used for NPC memory injection at session start. Filtered by `GRAPHMCP_SCORE_THRESHOLD` and capped at `GRAPHMCP_NPC_MEMORY_LIMIT`.
### `semantic_search`
Arguments:
```ts
{ query: string; limit?: number }
```
Returns `SemanticSearchResult`:
```ts
{ chunks: { content: string; score: number; source?: string }[] }
```
Used by `@Zalram` mention handler.
### `log_encounter`
Arguments:
```ts
{
title: string;
participants: string;
summary: string;
location?: string; // default ''
type?: string; // default 'encounter'
}
```
Returns `LogEncounterResult`:
```ts
{
enc_id: string;
title: string;
participants: string;
location: string;
timestamp: string;
}
```
Called from the encounter resolve path to write a permanent encounter node.
### `list_encounters`
Arguments:
```ts
{ limit?: number } // default 10
```
Returns `EncounterResultItem[]`:
```ts
{ id: string; title: string; location: string; timestamp: string; summary: string }[]
```
### `search_encounters`
Arguments:
```ts
{ query?: string; location?: string; participant?: string; limit?: number }
```
Returns `EncounterResultItem[]`.
### `get_encounter`
Arguments:
```ts
{ id: string }
```
Returns `EncounterDetails`:
```ts
{
id: string; title: string; location: string; timestamp: string;
summary: string; type: string;
participants: string[]; featured_entities: string[];
}
```
## 3. Redis contract
The bot writes to these key patterns:
| Key | Type | TTL | Owner |
|---|---|---|---|
| `session:{threadId}` | string (JSON `SessionState`) | `SESSION_TTL_HOURS` (12h) | `sessionManager` |
| `guild_threads:{guildId}` | set of thread IDs | inherits session TTL | `sessionManager` |
| (player registry, character registry — pattern in `src/session/playerRegistry.ts` and `characterRegistry.ts`) | varies | varies | respective module |
`SessionState` JSON shape: see `src/types/index.ts`.
`raw.messages` is a Redis stream published to by `graphmcp/ingest.ts` (fire-and-forget per encounter message). The bot does not read from it — the GraphMCP discord-connector does.

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# Mardonar Encounter Engine — Architecture
> Single-part backend project. Discord-native, LLM-driven D&D encounter engine.
> Generated 2026-06-19 from a deep scan of `/home/kaykayyali/hosting/mardonar-npcs`.
---
## Executive Summary
The Mardonar Encounter Engine is a Discord bot that runs structured D&D encounters. Each Discord thread is an encounter session. An LLM (Gemma 4 IT e2b via LiteLLM with Ollama fallback) narrates the scene, voices NPCs, drives skill checks, and steers the encounter toward hidden outcomes defined in a YAML spec. NPC memory, lore context, and encounter history are persisted in a graph database (Neo4j) accessed through a JSON-RPC MCP server (GraphMCP). Active session state lives in Redis with a TTL. The bot can also reach into Foundry VTT to resolve character stats and award XP via an external relay.
**Key constraint:** the harness controls everything the LLM sees. The 128k context window is partitioned into hard zones (system / pinned / sliding / safety) and the assembly pipeline is deterministic. Tool calls are extracted from fenced `tool_call` JSON blocks, not via native function calling — Gemma at e2b quantization isn't reliable for native tools.
---
## 1. Technology Stack
| Layer | Technology | Version | Notes |
|---|---|---|---|
| Runtime | Node.js | 22 (alpine) | ESM modules, NodeNext resolution |
| Language | TypeScript | 5.8 | strict mode, declaration + sourcemap output |
| Discord | discord.js | v14.18 | Slash commands + embeds + threads |
| LLM primary | LiteLLM proxy | (env: `LITELLM_BASE_URL`) | OpenAI-compatible |
| LLM fallback | Ollama | env: `OLLAMA_BASE_URL` | gemma4-it:e2b, 128k context |
| Session cache | Redis (ioredis) | 5.4 | TTL = `SESSION_TTL_HOURS` (default 12h) |
| Graph DB | Neo4j | 5 | via GraphMCP JSON-RPC, not direct |
| Lore / NPC memory | GraphMCP HTTP JSON-RPC | (env: `GRAPHMCP_URL`) | 6 RPC tools exposed |
| Foundry VTT | VTT relay HTTPS | (env: `VTT_RELAY_URL`) | Optional, requires API key |
| Validation | Zod | 3.24 | env + encounter spec |
| Logging | pino + pino-pretty | 9.6 / 13 | structured JSON in prod |
| Testing | Vitest | 3.1 | `tests/unit` + `tests/integration` |
| Build | tsc → dist/ | 5.8 | multi-stage Dockerfile |
**Architecture pattern:** layered backend with a plugin-style tool registry. Three layers: `bot` (Discord I/O), `harness` (LLM orchestration), `session` + `db` + `graphmcp` + `vtt` (data + integrations).
---
## 2. Source Tree
```
mardonar-bot/
├── src/
│ ├── bot/ # Discord I/O layer
│ │ ├── index.ts # Entry: Client setup, event wiring
│ │ ├── commands/ # 8 slash command modules
│ │ │ ├── dndname.ts # /dndname set|show|clear
│ │ │ ├── encounter.ts # /encounter start|status|end|generate|spec|random|stats|audit
│ │ │ ├── character.ts # /character register|show|view|admin
│ │ │ ├── roll.ts # /roll
│ │ │ ├── actions.ts # /actions
│ │ │ ├── xp.ts # /xp award
│ │ │ ├── encounters.ts # /encounters (list/search from GraphMCP)
│ │ │ └── turn.ts # /turn
│ │ ├── embeds/ # Discord embed builders
│ │ │ ├── playerGate.ts
│ │ │ ├── skillCheck.ts # Suspense + dice + roll buttons
│ │ │ ├── resolution.ts
│ │ │ ├── encounterDiscovery.ts
│ │ │ └── loreAnswer.ts
│ │ ├── handlers/ # Event handlers / sidecar logic
│ │ │ ├── messageRouter.ts # Encounter-thread message pipeline (heart of runtime)
│ │ │ ├── mentionHandler.ts # @Zalram persona replies
│ │ │ ├── rollHandler.ts # Button / modal submit roll resolution
│ │ │ ├── generationQueue.ts # Debounce + LLM turn scheduling
│ │ │ ├── queueCap.ts # Burst cap → drop notice
│ │ │ ├── reactionManager.ts # 👀 reaction lifecycle (scheduled/processing/complete)
│ │ │ └── responseFilter.ts # Post-LLM response scrubbing
│ │ └── lib/welcomeDM.ts
│ ├── harness/ # LLM orchestration
│ │ ├── promptBuilder.ts # System prompt assembly (XML sections)
│ │ ├── contextAssembler.ts # Pin/slide history + token budget trim
│ │ ├── llmClient.ts # LiteLLM primary → Ollama fallback
│ │ ├── litellmClient.ts # OpenAI-compatible HTTP client
│ │ ├── ollamaClient.ts # Native ollama npm + direct HTTP
│ │ ├── toolParser.ts # Extract ```tool_call``` blocks
│ │ ├── toolRegistry.ts # Plugin registry + active-set filtering
│ │ ├── toolDispatcher.ts # Per-encounter tool validation + dispatch
│ │ └── tools/ # 6 tool plugins (see §5)
│ ├── session/ # Redis-backed state
│ │ ├── playerRegistry.ts # guildId+discordId → Player
│ │ ├── characterRegistry.ts # Character profile + pronouns + Foundry UUID
│ │ ├── sessionManager.ts # threadId → SessionState (pinned/sliding history)
│ │ ├── encounterLog.ts # Filesystem tally + summary writer
│ │ └── xpAwarder.ts # XP grant via VTT relay
│ ├── graphmcp/ # GraphMCP JSON-RPC client
│ │ ├── client.ts # 6 RPC calls + NPC memory formatter
│ │ ├── ingest.ts # Publish to Redis stream (raw.messages)
│ │ ├── loreResolver.ts # /encounter generate helper
│ │ └── vocabularyResolver.ts # spec randomizable: vocabulary source
│ ├── vtt/ # Foundry VTT integration
│ │ ├── foundryClient.ts # HTTP client, formatters
│ │ └── relaySession.ts # RSA-OAEP handshake + headless spin-up
│ ├── db/redis.ts # ioredis singleton (lazy connect)
│ ├── spec/loader.ts # YAML loader + Zod schema
│ ├── persona/loader.ts # persona.yaml loader for @mention
│ ├── lib/logger.ts # pino wrapper
│ ├── config.ts # Zod env schema + parsed config singleton
│ ├── scripts/deploy-commands.ts # Slash command registration (REST v10)
│ └── types/index.ts # Shared interfaces + CONTEXT_BUDGET const
├── specs/ # 8 encounter YAML files
│ ├── SPEC_FORMAT.md
│ ├── market-thief.yaml
│ ├── cog-claw-debt.yaml
│ ├── mawfang-pursuit.yaml
│ ├── silt-leak.yaml
│ ├── stormscar-pilgrim.yaml
│ ├── velvet-auction.yaml
│ └── whispering-stone.yaml
├── data/ # Runtime data (gitignored in practice)
│ ├── tally.json # Per-spec run counts
│ └── summaries/ # One .txt per encounter
├── tests/
│ ├── unit/ # 21 unit test files
│ └── integration/ # 1 integration test
├── Docs/ # Pre-existing project docs
│ ├── mardonar-encounter-engine.md # ⚠ Out of date — describes Go architecture
│ ├── mardonar-build-plan.md
│ ├── epics.md
│ ├── stories/
│ └── ux-designs/
├── lore/ # Game-world reference material
├── persona.yaml # Zalram Cloudwalker (bot's @mention persona)
├── prd.md # Active PRD: Dynamic Goal Registration
├── Dockerfile # Multi-stage node:22-alpine
├── docker-compose.dev.yml # Local Redis + Neo4j
├── package.json
├── tsconfig.json
└── vitest.config.ts
```
---
## 3. Architecture Pattern
**Layered backend with a plugin registry:**
```
┌──────────────────────────────────────────────────────────────────┐
│ Discord (Gateway WebSocket) │
└──────────────────────────────────────────────────────────────────┘
│
▼
┌──────────────────────────────────────────────────────────────────┐
│ src/bot/ │
│ ┌────────────────────┐ ┌────────────────┐ ┌──────────────┐ │
│ │ commands/ │ │ handlers/ │ │ embeds/ │ │
│ │ (slash cmd) │ │ (event loops) │ │ (UI shape) │ │
│ └────────────────────┘ └────────────────┘ └──────────────┘ │
│ messageRouter is the runtime heart │
└──────────────────────────────────────────────────────────────────┘
│
▼
┌──────────────────────────────────────────────────────────────────┐
│ src/harness/ │
│ assembleContext → llmClient (LiteLLM → Ollama) │
│ ↓ │
│ parseToolCall → dispatchTool → active tool plugins │
└──────────────────────────────────────────────────────────────────┘
│ │
▼ ▼
┌─────────────────────┐ ┌─────────────────┐ ┌──────────────────┐
│ src/session/ │ │ src/db/ │ │ src/graphmcp/ │
│ (Redis state) │ │ (ioredis) │ │ (JSON-RPC) │
└─────────────────────┘ └─────────────────┘ └──────────────────┘
│
▼
┌──────────────────────────────────────────────────────────────────┐
│ src/vtt/ → External Foundry VTT relay │
│ src/persona/ → persona.yaml for @mentions │
│ src/spec/ → specs/*.yaml loaded per encounter │
└──────────────────────────────────────────────────────────────────┘
```
### 3.1 Message flow (encounter thread)
1. Discord `messageCreate` → `bot/index.ts` → `handleMessage` in `handlers/messageRouter.ts`
2. Channel guard: must be a thread whose parent is in `DISCORD_ALLOWED_CHANNELS`
3. Player gate: if `discordId` not in `playerRegistry`, post ephemeral gate embed, hold message in `SessionState.heldMessages`, return
4. Roll guard: if `pendingSkillCheck` is set, increment attempt counter; auto-fail after `PENDING_ROLL_LIMIT` (5) skipped messages
5. Burst cap: `queueCap` rejects + sends drop notice if too many messages arrived before last LLM response
6. Append user message to history, fire `👀` reaction (fire-and-forget)
7. Publish to GraphMCP via `graphmcp/ingest.ts` (Redis stream `raw.messages`)
8. Debounced (500ms) → `generationQueue.scheduleLLMTurn`
9. `runLLMTurn`:
- `assembleContext` builds message list (system + pinned + trimmed sliding)
- `callLLM` → LiteLLM with Ollama fallback
- `parseToolCall` splits narrative from `tool_call` block
- `filterLLMResponse` rejects fabricated rolls / echoed system tags → injects `[FILTER CORRECTION]` and retries once
- Narrative posted to thread; assistant message appended to history
- If tool call present → `dispatchTool` → plugin handler → system message appended
- If `result.resolved` set → phase = 'resolved', archive thread after `ENCOUNTER_ARCHIVE_DELAY_MS`
10. `reactionManager` upgrades `👀` state to `complete` and clears burst counter
### 3.2 Tool dispatch
The tool layer uses a **plugin registry** (`harness/toolRegistry.ts`) with per-encounter active-set filtering. Each `ToolPlugin` declares:
```ts
{
name: string;
description: string;
args: Record<string, { type: 'string' | 'number' | 'boolean'; description: string }>;
contextDocs?: (spec: EncounterSpec) => string;
handler: (args, ctx: ToolContext) => Promise<DispatchResult>;
}
```
A spec's `tools: [...]` array declares which plugins are active for that encounter. Tools are loaded by side-effect from `harness/tools/index.ts`:
```ts
import './skillCheckEmit.js';
import './encounterResolve.js';
import './contextRecall.js';
import './goalRegister.js';
import './foundryLookup.js';
import './foundryReward.js';
```
The LLM emits a tool call by appending a fenced `tool_call` JSON block. Three parser patterns (in order): fenced ` ```tool_call ` block, bare `tool_call` header, then a fuzzy bare-JSON fallback. Unrecognized tools or malformed args are logged and ignored — the narrative is preserved.
The system prompt section `buildToolManifest(spec)` injects only the active set's tool definitions into the prompt contract, so each encounter's LLM only sees tools it can use.
---
## 4. Data Architecture
### 4.1 Redis (transient state)
| Key pattern | Value | TTL | Owner |
|---|---|---|---|
| `session:{threadId}` | `JSON.stringify(SessionState)` | `SESSION_TTL_HOURS` (12h) | `sessionManager` |
| `guild_threads:{guildId}` | Set of thread IDs | inherits | `sessionManager` |
| `players:{guildId}` (legacy design) | discordId → dndName | — | `playerRegistry` (current impl uses different scheme) |
| `raw.messages` | Redis stream | — | `graphmcp/ingest.ts` |
`SessionState` (`src/types/index.ts`) is the central shape:
```ts
{
encounterId, threadId, guildId,
spec: EncounterSpec,
players: Record<discordId, Player>,
history: ChatMessage[], // mix of pinned + sliding
phase: 'open' | 'active' | 'resolved',
heldMessages: HeldMessage[], // for unregistered players
outcome?, outcomeSummary?,
npcMemories?: Record<npcId, string>,
resolvedContext?: Record<key, string>,
pendingSkillCheck?: { player, prompt, dc, messageId, modifier?, skill?, advantage?, disadvantage? },
pendingSkillCheckAttempts?: number,
createdAt, updatedAt,
}
```
### 4.2 Filesystem (`data/`)
- `tally.json` — `{ [specName]: { runs, lastRun } }`. Incremented at each encounter start.
- `summaries/{encounterId}-{ISO timestamp}.txt` — one per resolved encounter, written by `encounterLog.writeSummary()`.
### 4.3 GraphMCP / Neo4j (via JSON-RPC)
The bot never queries Neo4j directly. All graph access goes through `GRAPHMCP_URL/mcp` with JSON-RPC 2.0:
| Tool | Args | Returns |
|---|---|---|
| `query_as_npc` | `npc_name, question, limit` | NPCQueryResult (chunks + graph_context) |
| `semantic_search` | `query, limit` | SemanticSearchResult |
| `log_encounter` | `title, participants, summary, location?, type?` | LogEncounterResult |
| `list_encounters` | `limit` | EncounterResultItem[] |
| `search_encounters` | `query?, location?, participant?, limit?` | EncounterResultItem[] |
| `get_encounter` | `id` | EncounterDetails |
NPC memory is injected into the system prompt via `formatNPCMemory()` — past encounters witnessed + top-3 lore chunks above `GRAPHMCP_SCORE_THRESHOLD`.
### 4.4 Context window budget
`src/types/index.ts` exports a `CONTEXT_BUDGET` constant used by both `contextAssembler` and `sessionManager`:
| Zone | Tokens |
|---|---|
| System prompt (narrator + NPCs + tools + goals) | 4,000 |
| Pinned (opening narrative, goal block) | 2,000 |
| Sliding history | 118,000 |
| Safety buffer | 3,500 |
| **Total** | **128,000** |
History trimming drops the oldest non-pinned turn pair when over budget, with a hard floor of 6 messages. Token estimates use `gpt-tokenizer` with a 1.15× buffer to approximate Gemma's tokenizer.
---
## 5. API Surface
This project exposes its functionality as **two different APIs**:
### 5.1 Discord slash commands (player/admin surface)
Registered via `src/scripts/deploy-commands.ts` using Discord REST v10.
| Command | Subcommands | Purpose |
|---|---|---|
| `/dndname` | `set <name>`, `show`, `clear` | Character name registration |
| `/character` | `register foundry\|custom`, `show`, `view`, `clear`, `admin list\|remove\|give` | Full character profile + Foundry link |
| `/encounter` | `start <spec>`, `random`, `status`, `stats`, `audit`, `end [notes]`, `list`, `generate <theme>`, `spec` | Encounter session lifecycle |
| `/encounters` | (Select menu + search modal) | Search the encounter log via GraphMCP |
| `/roll` | `action` | Manual dice roll |
| `/actions` | — | In-character action shortcuts |
| `/turn` | — | Turn management |
| `/xp` | `award <amount>` | Award XP (relay → VTT) |
Plus button + modal interactions: skill-check roll buttons, give item, custom character registration, Foundry link, encounter select menu, search modal.
### 5.2 Tool plugins (LLM surface)
Defined in `src/harness/tools/` and registered at module load. Each spec filters the active set via its `tools:` array.
| Tool | Purpose | Args |
|---|---|---|
| `skill_check_emit` | Posts a dice-roll embed to the thread; blocks player input until resolved | `player, prompt, skill?, dc, advantage?, disadvantage?` |
| `encounter_resolve` | Marks encounter complete; writes summary; archives thread | (args handled in `tools/encounterResolve.ts`) |
| `context_recall` | Look up canonical session facts stored in `resolvedContext` | |
| `goal_register` | Add a new goal mid-encounter (the `prd.md` "dynamic goal registration" feature) | |
| `foundry_lookup` | Pull live character data from VTT relay | |
| `foundry_reward` | Award XP/items to a character via VTT | |
> ⚠ Note: the `Docs/mardonar-encounter-engine.md` lists `skill_check_resolve`, `event_log_append`, `npc_memory_read`, `npc_memory_write` as tools. These have been **removed** — replaced by the per-encounter event log + GraphMCP `log_encounter` tool. The current tool set is the one above.
---
## 6. Deployment Architecture
### 6.1 Local development
```bash
docker compose -f docker-compose.dev.yml up -d # Redis + Neo4j
npm install
npm run deploy-commands # registers slash commands with Discord
npm run dev # tsx watch mode
```
### 6.2 Production (multi-stage Dockerfile)
`Dockerfile` (Node 22 alpine):
1. **Builder stage** — `npm ci --ignore-scripts`, copy `src` + `tsconfig.json`, `npm run build` → `dist/`
2. **Runtime stage** — `npm ci --omit=dev --ignore-scripts`, copy `dist/`, `specs/`, `lore/`, `persona.yaml`
3. `CMD ["node", "dist/bot/index.js"]`
`docker-compose.dev.yml` defines two services (for the `mardonar-internal` external Docker network that also hosts Redis + an MCP server from the GraphMCP-Example stack): `deploy-commands` (one-shot) and `bot` (long-running, with `data/` mounted as a volume).
> **Gap:** There is no production `docker-compose.yml`. The `.env.example` is the source of truth for runtime config.
### 6.3 Operational
- Session state has a 12h TTL by default — stale encounters auto-expire
- Bot connects to Redis on `main()` startup (`redis.connect()`)
- VTT relay auto-spins up a headless Foundry session on connection failure (RSA-OAEP encrypted handshake)
- `LOG_LEVEL=info` in prod; pino writes structured JSON
---
## 7. Development & Testing
### 7.1 Local commands
| Command | Effect |
|---|---|
| `npm run dev` | `tsx watch src/bot/index.ts` — auto-reload dev |
| `npm run build` | `tsc` → `dist/` |
| `npm run start` | `node dist/bot/index.js` |
| `npm run deploy-commands` | One-shot slash command registration |
| `npm run test` | All tests (vitest) |
| `npm run test:unit` | Unit tests only (no external services) |
| `npm run test:int` | Integration tests (requires Docker services) |
### 7.2 Test coverage
- 21 unit test files in `tests/unit/`
- 1 integration test (`tests/integration/phase1.test.ts`)
- `tests/fixtures/spec.ts` — shared encounter spec fixture
Notable test surfaces: `promptBuilder`, `contextAssembler`, `toolParser`, `toolDispatcher`, `sessionManager`, `playerRegistry`, `characterRegistry`, `specLoader`, `rollHandler`, `rollDetection`, `responseFilter`, `queueCap`, `generationQueue`, `reactionManager`, `encounterLog`, `encounterDiscoveryEmbed`, `loreAnswerEmbed`, `skillCheckEmbed`, `graphmcpClient`, `foundryClientRetry`, `foundryClientFormatters`, `goalRegister`, `relaySession`.
---
## 8. Design Decisions (Living)
| Decision | Why |
|---|---|
| **LiteLLM as primary, Ollama as fallback** | OpenAI-compatible proxy gives model flexibility without code changes; Ollama fallback ensures the bot still runs when the proxy is down |
| **Prompt-based tool calls (not native)** | Gemma 4 IT at e2b is unreliable with native function calling; fenced JSON block parsing is deterministic |
| **Tool plugin registry with per-spec active set** | New tools can be added without touching the dispatch core; specs opt into only the tools they need |
| **Pinned + sliding history** | Opening narrative and goal block must survive trimming or the LLM loses its anchor |
| **Goals in system prompt, not as a tool** | Goals rarely change mid-encounter; embedding them reduces tool round-trips |
| **Redis for active state, GraphMCP for memory** | Redis is fast and ephemeral for live sessions; the graph holds long-term NPC lore |
| **Player name gate via embed, not DMs** | Keeps the conversation in-thread; ephemeral embed auto-deletes after 30s |
| **Story generator via `/encounter generate`** | Separates creative authoring from real-time inference — generator can use a stronger model later |
| **VTT relay auto-spin-up** | Lets the bot operate when the relay has been cold-stopped; uses RSA-OAEP for password handoff |
| **In-world voice rule for player-facing strings** | See `feedback-in-world-voice` — no utility/jargon in bot messages |
---
## 9. Open Issues / Drift
Items the deep scan surfaced that aren't bugs but should be tracked:
- **Drift: `Docs/mardonar-encounter-engine.md` describes a Go bot with an embedded MCP layer; the actual code is TypeScript with an external JSON-RPC GraphMCP server.** Treat the doc as historical/aspirational.
- **Drift: `README.md`'s "Project Structure" tree references `src/mcp/` and the old `src/bot/commands/{dndname,encounter}.ts` layout.** Update README, or trim it to a pointer to the index.
- **Duplicate `trimHistory` logic** in `src/session/sessionManager.ts` and `src/harness/contextAssembler.ts` (identical body). Could be extracted to `src/lib/historyTrim.ts`.
- **No production compose file** — only `docker-compose.dev.yml`. The Dockerfile is production-ready but deployment is ad-hoc.
- **No CI/CD** — `.github/workflows/` does not exist.
- **`DISCORD_ALLOWED_USERS` is empty by default → anyone in allowed channels can run `/encounter start`.** The access control is channel-scoped, not user-scoped; admins need to set the env var explicitly.
- **`OLLAMA_BASE_URL` defaults to `localhost`** — fine for dev, but production needs the LAN IP or proxy URL set.
- **Spec tool list must be kept in sync** — `specs/*.yaml` declare `tools: [...]`, but no test verifies every referenced tool is registered. A stale spec name silently filters to no active tools.
- **Schema mismatch risk:** `types/index.ts` `EncounterSpec` and `spec/loader.ts` Zod schema have diverged slightly — `EncounterSpec` is missing `tone`, `tools`, `randomizable`, and `npcs.nameKey`. `assembleContext` reads `spec.tone`; `loader` doesn't validate it. Consider regenerating `types/index.ts` from the Zod schema via `z.infer`.
---
*Document generated by `bmad-document-project` initial scan, deep level. Project state recorded in `docs/project-scan-report.json`.*

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# Component Inventory
> Reusable and feature-specific components in the Mardonar Encounter Engine. Generated 2026-06-19.
## Discord Components
### Slash commands (reusable across all guilds)
| Component | File | Reusable? | Notes |
|---|---|---|---|
| `/dndname` | `src/bot/commands/dndname.ts` | Yes | Character name gate. Universal. |
| `/encounter` | `src/bot/commands/encounter.ts` | Yes | Encounter lifecycle. Spec-scoped via `start <spec>`. |
| `/character` | `src/bot/commands/character.ts` | Yes | Full character profile + Foundry link. |
| `/roll` | `src/bot/commands/roll.ts` | Yes | Manual roll outside encounter. |
| `/actions` | `src/bot/commands/actions.ts` | Yes | In-character action shortcuts. |
| `/xp` | `src/bot/commands/xp.ts` | Yes | XP grant. |
| `/encounters` | `src/bot/commands/encounters.ts` | Yes | Search via GraphMCP. |
| `/turn` | `src/bot/commands/turn.ts` | Yes | Turn management. |
### Embeds (pure builders, reusable)
| Embed | File | Caller |
|---|---|---|
| PlayerGate | `src/bot/embeds/playerGate.ts` | `messageRouter` (unregistered player) |
| Suspense + SkillCheck | `src/bot/embeds/skillCheck.ts` | `tools/skillCheckEmit.ts` |
| Resolution | `src/bot/embeds/resolution.ts` | `tools/encounterResolve.ts` |
| EncounterDiscovery | `src/bot/embeds/encounterDiscovery.ts` | `/encounters` |
| LoreAnswer | `src/bot/embeds/loreAnswer.ts` | `mentionHandler` |
### Event handlers (reusable, sidecar logic)
| Handler | File | Trigger | Side effects |
|---|---|---|---|
| `handleMessage` | `handlers/messageRouter.ts` | `messageCreate` in encounter thread | Gates, debounce, LLM call, tool dispatch |
| `handleMention` | `handlers/mentionHandler.ts` | `messageCreate` @Zalram | Lore search + persona reply |
| `handleRollInteraction` | `handlers/rollHandler.ts` | Button / modal submit | Resolves skill check, schedules LLM turn |
| `scheduleEncounterLLMTurn` | `handlers/messageRouter.ts` | Internal | Debounce → LLM turn |
| `scheduleLLMTurn` | `handlers/generationQueue.ts` | Internal | Debounce timer |
| `isBurstCapped` / `sendDropNotice` | `handlers/queueCap.ts` | Pre-append check | Drops + notifies |
| `registerScheduled` / `drainPending` / `upgradeToProcessing` / `upgradeToComplete` | `handlers/reactionManager.ts` | Per-message | 👀 reaction lifecycle |
| `filterLLMResponse` / `detectMissedSkillCheck` | `handlers/responseFilter.ts` | Post-LLM | Injects `[FILTER CORRECTION]` |
## LLM Harness Components
### Tool plugins (registered globally, filtered per-encounter)
| Plugin | File | Per-encounter filter | Side effects |
|---|---|---|---|
| `skill_check_emit` | `harness/tools/skillCheckEmit.ts` | Spec `tools:` | Posts suspense + dice embed; updates `pendingSkillCheck` |
| `encounter_resolve` | `harness/tools/encounterResolve.ts` | Spec `tools:` | Writes summary, archives thread |
| `context_recall` | `harness/tools/contextRecall.ts` | Spec `tools:` | Returns canonical facts from `resolvedContext` |
| `goal_register` | `harness/tools/goalRegister.ts` | Spec `tools:` | Adds dynamic goal (per `prd.md`) |
| `foundry_lookup` | `harness/tools/foundryLookup.ts` | Spec `tools:` | Live VTT actor data |
| `foundry_reward` | `harness/tools/foundryReward.ts` | Spec `tools:` | XP/item grant to VTT actor |
### LLM clients
| Client | File | Role |
|---|---|---|
| `llmClient` (router) | `harness/llmClient.ts` | LiteLLM primary, Ollama fallback |
| `litellmClient` | `harness/litellmClient.ts` | OpenAI-compatible HTTP |
| `ollamaClient` | `harness/ollamaClient.ts` | Native ollama npm + direct HTTP |
### Pipeline components
| Component | File | Role |
|---|---|---|
| `buildSystemPrompt` | `harness/promptBuilder.ts` | 10-block XML system prompt |
| `assembleContext` | `harness/contextAssembler.ts` | System + pinned + trimmed sliding |
| `parseToolCall` | `harness/toolParser.ts` | 3-pattern tool block extractor |
| `buildToolManifest` | `harness/toolDispatcher.ts` | Per-encounter tool contract section |
| `dispatchTool` | `harness/toolDispatcher.ts` | Active-set validation + dispatch |
| `getActiveTools` | `harness/toolRegistry.ts` | Per-encounter filter (or all if unset) |
| `registerTool` | `harness/toolRegistry.ts` | Side-effect registration at module load |
## Session / Data Components
| Component | File | Backend | Surface |
|---|---|---|---|
| `sessionManager` | `session/sessionManager.ts` | Redis (TTL 12h) | `create`, `get`, `update`, `addMessage`, `delete`, `getGuildThreadIds` |
| `playerRegistry` | `session/playerRegistry.ts` | Redis | `(guildId, discordId) → Player` |
| `characterRegistry` | `session/characterRegistry.ts` | Redis | Character profile (pronouns, Foundry UUID, etc.) |
| `encounterLog` | `session/encounterLog.ts` | Filesystem | `tally.json` + per-encounter `.txt` in `data/summaries/` |
| `xpAwarder` | `session/xpAwarder.ts` | VTT relay | XP grant |
| `redis` singleton | `db/redis.ts` | ioredis | Lazy connect, 3 retries |
| `loadSpec` | `spec/loader.ts` | YAML + Zod | `EncounterSpecSchema.parse` |
| `loadPersona` | `persona/loader.ts` | YAML | @Zalram persona |
## GraphMCP Components
| Component | File | RPC method | Used by |
|---|---|---|---|
| `queryAsNPC` | `graphmcp/client.ts` | `query_as_npc` | NPC memory injection at session start |
| `semanticSearch` | `graphmcp/client.ts` | `semantic_search` | @mention lore search |
| `logEncounter` | `graphmcp/client.ts` | `log_encounter` | Encounter resolve (writes graph node) |
| `listEncounters` | `graphmcp/client.ts` | `list_encounters` | `/encounters list` |
| `searchEncounters` | `graphmcp/client.ts` | `search_encounters` | `/encounters search` |
| `getEncounter` | `graphmcp/client.ts` | `get_encounter` | `/encounters get` |
| `formatNPCMemory` | `graphmcp/client.ts` | (local) | Render NPCQueryResult as system-prompt text |
| `publishToGraphMCP` | `graphmcp/ingest.ts` | (Redis stream `raw.messages`) | Fire-and-forget per encounter message |
| `vocabularyResolver` | `graphmcp/vocabularyResolver.ts` | graphmcp | `randomizable:` lookup |
| `loreResolver` | `graphmcp/loreResolver.ts` | graphmcp | `/encounter generate` helper |
## VTT Components
| Component | File | Role |
|---|---|---|
| `foundryClient` | `vtt/foundryClient.ts` | HTTP client, live actor data + formatters |
| `relaySession.ensureRelaySession` | `vtt/relaySession.ts` | Auto-spin-up headless session on relay failure |
| `isRelayDown` | `vtt/relaySession.ts` | Network-failure classifier |
| `actorCache` (in `tools/skillCheckEmit.ts`) | in-file | 30s in-memory cache for actor details |
## Type system (shared)
| Type | File | Purpose |
|---|---|---|
| `EncounterSpec` | `types/index.ts` | Spec shape (note: diverged slightly from Zod schema — see architecture.md §9) |
| `NpcPersona` | `types/index.ts` | NPC definition |
| `EncounterGoal` / `EncounterGoals` | `types/index.ts` | Primary/secondary goals |
| `SessionState` | `types/index.ts` | Full session shape |
| `ChatMessage` | `types/index.ts` | History turn (with `pinned` flag) |
| `HeldMessage` | `types/index.ts` | Pre-registration messages |
| `ToolCallBlock` / `LLMResponse` | `types/index.ts` | LLM tool surface |
| `ToolName` | `types/index.ts` | Discriminated union of valid tools |
| `*Args` per tool | `types/index.ts` | Per-tool arg types |
| `NpcNode` / `EncounterNode` / `EncounterEventNode` | `types/index.ts` | Neo4j graph node types |
| `CONTEXT_BUDGET` (const) | `types/index.ts` | Hard token budget zones |
## Config & logging
| Component | File | Role |
|---|---|---|
| `config` (singleton) | `config.ts` | Zod-validated env (Discord, Redis, LiteLLM, Ollama, GraphMCP, VTT, persona, logging) |
| `log` (pino wrapper) | `lib/logger.ts` | Structured logging with `pino-pretty` in dev |

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# Data Models
> Persistent and transient data shapes in the Mardonar Encounter Engine. Generated 2026-06-19.
The bot's data lives in three places: Redis (transient session state), the filesystem (`data/`, runtime artifacts), and the GraphMCP-backed Neo4j graph (long-term NPC memory + encounter history). The bot does not query Neo4j directly — it goes through the GraphMCP JSON-RPC client.
## Encounter spec (YAML → Zod → TypeScript)
Defined by `EncounterSpecSchema` in `src/spec/loader.ts`. Loaded by `/encounter start <spec-name>`. Stored in `SessionState.spec`.
```ts
{
encounterId: string, // unique ID — also Neo4j node key
title: string, // display name in Discord embeds
tone?: string, // "tense" | "comedic" | ... optional flavor block
setting: {
location: string,
mood: string, // multi-line OK
ambientNpcs: string, // multi-line OK
},
openingNarrative: string, // multi-line; can reference {{nameKey}} placeholders
npcs: [{ // 1–5 entries
id: string, // unique stable ID
name: string,
nameKey?: string, // placeholder for randomizable substitution
role: string,
persona: string, // multi-line
memoryKey?: string, // if set, memory is loaded from / written to graph
}],
goals: {
hidden: boolean, // default true
primary: [{ id: string, label: string }], // min 1
secondary: [{ id: string, label: string }],
},
sportsmanshipRules: string[],
skillChecks: Record<string, number | string>, // grouped as <name>_dc / <name>_skill / <name>_note
randomizable?: [{ // optional
key: string,
source?: 'graphmcp' | 'vocabulary',
category?: string, // e.g. "names.dwarf.female"
query: string, // free-text query
fallback: string, // always available
}],
dmNotes?: string,
tools?: string[], // active tool plugin names; empty/undefined = all
}
```
`tone` and `tools` are read by the harness but **not in the Zod schema** (see `architecture.md §9` for the schema-vs-types drift).
## SessionState (Redis)
Stored as JSON under key `session:{threadId}`. Schema in `src/types/index.ts`:
```ts
{
encounterId: string,
threadId: string, // Discord thread snowflake
guildId: string,
spec: EncounterSpec,
players: Record<discordId, Player>,
history: ChatMessage[], // pinned + sliding mix
phase: 'open' | 'active' | 'resolved',
heldMessages: HeldMessage[], // for unregistered players
outcome?: string, // goal ID when resolved
outcomeSummary?: string,
npcMemories?: Record<npcId, string>, // injected into system prompt
resolvedContext?: Record<key, string>, // canonical session facts (context_recall)
pendingSkillCheck?: {
player: string,
prompt: string,
dc: number,
messageId: string, // Discord message ID of the dice embed
modifier?: number,
skill?: string,
advantage?: boolean,
disadvantage?: boolean,
},
pendingSkillCheckAttempts?: number,
createdAt: number,
updatedAt: number,
}
```
## ChatMessage
```ts
{
role: 'system' | 'user' | 'assistant',
content: string,
pinned?: boolean, // never trimmed by contextAssembler
timestamp: number,
}
```
System messages are emitted by the harness for tool results, filter corrections, and join events. Assistant messages contain the LLM's narrative.
## Player
```ts
{
discordId: string,
dndName: string,
pronouns?: string, // populated from characterRegistry if set
}
```
`pronouns` is added on first appearance in an encounter thread if the player has a `characterRegistry` profile.
## Character profile (characterRegistry)
```ts
{
discordId: string,
guildId: string,
dndName: string,
pronouns?: string,
characterClass?: string,
race?: string,
level?: number,
backstory?: string,
foundryActorUuid?: string, // link to Foundry VTT actor
inventory?: unknown[], // populated from /character view
spells?: unknown[], // populated from /character view
// ... additional Foundry-derived fields
}
```
## Neo4j graph (via GraphMCP)
The bot does not directly define the Neo4j schema — it consumes whatever GraphMCP returns. The conceptual model based on the GraphMCP client types and the legacy design doc:
```
(:NPC {id, name, persona_summary, memory: [], last_seen_encounter})
-[:APPEARED_IN]->
(:Encounter {id, title, resolved, outcome_id, created_at})
-[:HAS_EVENT]->
(:EncounterEvent {timestamp, type, description})
-[:FEATURED]->
(:Entity {name, kind})
(:Player {discord_id, dnd_name})
-[:PARTICIPATED_IN]->
(:Encounter)
```
The bot writes to the graph via `log_encounter` (one encounter node + participants). It reads NPC memory via `query_as_npc` and the broader corpus via `semantic_search`.
## File system (`data/`)
```
data/
├── tally.json // { [specName]: { runs: number, lastRun: ISO8601 } }
└── summaries/
└── {encounterId}-{ISO8601-with-dashes}.txt
// human-readable per-encounter summary
// header: Encounter, ID, Thread, Date, Outcome, Players
// body: free-text Summary
```
`tally.json` is rewritten atomically on each encounter start. Summary files are append-only.
## Tool call payloads
```ts
// What the LLM emits
type ToolCallBlock = {
tool: ToolName,
args: Record<string, unknown>,
}
// What the harness parses back from the LLM response
type LLMResponse = {
narrative: string,
toolCall?: ToolCallBlock,
rawTokensUsed?: number,
}
```
Tool names (`src/types/index.ts`):
```ts
type ToolName =
| 'skill_check_emit'
| 'skill_check_resolve' // (defined in types but no longer registered — see architecture.md §9)
| 'event_log_append' // (defined in types but no longer registered)
| 'npc_memory_read' // (defined in types but no longer registered)
| 'npc_memory_write' // (defined in types but no longer registered)
| 'encounter_resolve'
| 'goal_register'
| 'context_recall'
| 'foundry_lookup'
| 'foundry_reward';
```
The four `*_resolve / *_read / *_write` entries are **dead** in the current implementation — replaced by GraphMCP `log_encounter` and other RPC calls. They should be removed from the type union (or actually re-implemented) to avoid confusion.
## Context budget (compile-time const)
`src/types/index.ts`:
```ts
export const CONTEXT_BUDGET = {
SYSTEM: 4_000,
PINNED: 2_000,
HISTORY: 118_000,
SAFETY: 3_500,
TOTAL: 128_000,
} as const;
```
Used by `contextAssembler` and `sessionManager` to enforce the trimming policy.

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# Deployment Guide
> Deploying the Mardonar Encounter Engine. Generated 2026-06-19.
## Architecture
The bot is a single long-running Node.js process. It connects to:
- **Discord** over WebSocket (discord.js v14)
- **Redis** for session and player/character registries
- **GraphMCP** (HTTP JSON-RPC) for NPC memory, lore search, and encounter log writes
- **LiteLLM** (preferred) or **Ollama** for LLM inference
- **VTT relay** (optional) for Foundry VTT integration
The Dockerfile is multi-stage Node 22 alpine. There is currently no production `docker-compose.yml` — only the dev one (`docker-compose.dev.yml`). Production deploys use the Dockerfile directly with whatever orchestrator is in use.
## Build
```bash
npm ci --ignore-scripts
npm run build # tsc → dist/
```
The build is reproducible from a clean `node_modules`. The Dockerfile's builder stage does exactly this.
## Container image
`Dockerfile`:
- **Builder** (`node:22-alpine`): `npm ci --ignore-scripts`, copy `src` + `tsconfig.json`, run `npm run build`
- **Runtime** (`node:22-alpine`): `npm ci --omit=dev --ignore-scripts`, copy `dist/`, `specs/`, `lore/`, `persona.yaml`
- **CMD**: `["node", "dist/bot/index.js"]`
To build locally:
```bash
docker build -t mardonar-bot:latest .
```
The `data/` directory is not copied into the image — it must be mounted as a volume in production so tally and summaries persist across restarts.
## Local dev (Docker Compose)
`docker-compose.dev.yml` is the only compose file in the repo. It declares the `mardonar-internal` Docker network as `external: true` — it expects the GraphMCP-Example stack (Redis + MCP server) to be running first.
```bash
docker compose -f docker-compose.dev.yml up -d
docker compose -f docker-compose.dev.yml logs -f bot
```
Two services:
- **`deploy-commands`** — one-shot container that runs `node dist/scripts/deploy-commands.js`. `restart: "no"`.
- **`bot`** — long-running container. `restart: unless-stopped`. Mounts `./data:/app/data` so tally and summaries persist. `depends_on: deploy-commands: service_completed_successfully` ensures commands are registered before the bot starts serving traffic.
## Production deployment
There is no production compose file. Pick one:
### Option A: Plain Docker
```bash
docker build -t mardonar-bot:latest .
docker run -d \
--name mardonar-bot \
--restart unless-stopped \
--env-file .env \
-v /var/lib/mardonar/data:/app/data \
--network mardonar-internal \
mardonar-bot:latest
```
Register commands once before the bot serves traffic (either via the `deploy-commands` service or by running the same image with a different command):
```bash
docker run --rm \
--env-file .env \
--network mardonar-internal \
mardonar-bot:latest \
node dist/scripts/deploy-commands.js
```
### Option B: systemd (Linux host)
```ini
# /etc/systemd/system/mardonar-bot.service
[Unit]
Description=Mardonar Encounter Engine
After=network.target redis-server.service
[Service]
Type=simple
User=mardonar
WorkingDirectory=/opt/mardonar
EnvironmentFile=/opt/mardonar/.env
ExecStart=/usr/bin/node /opt/mardonar/dist/bot/index.js
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target
```
```bash
sudo systemctl daemon-reload
sudo systemctl enable --now mardonar-bot
sudo journalctl -u mardonar-bot -f
```
## Environment
All runtime configuration is via environment variables, validated by Zod (`src/config.ts`). The full list is in [`development-guide.md`](./development-guide.md#environment-configuration-reference).
Production essentials:
```env
DISCORD_TOKEN=...
DISCORD_CLIENT_ID=...
DISCORD_GUILD_ID=... # instant command registration
# Network isolation: only respond in specific channels
DISCORD_ALLOWED_CHANNELS=123456789012345678,987654321098765432
# User restriction: only allow specific users to run /encounter
DISCORD_ALLOWED_USERS=111111111111111111
# LiteLLM (preferred)
LITELLM_BASE_URL=http://your-litellm-host:4000
LITELLM_API_KEY=...
LITELLM_MODEL=ollama-cloud
# Ollama fallback
OLLAMA_BASE_URL=http://your-ollama-host:11434
OLLAMA_MODEL=gemma4-it:e2b
# GraphMCP (must be reachable)
GRAPHMCP_URL=http://mcp-server:9000
GRAPHMCP_SCORE_THRESHOLD=0.68
GRAPHMCP_INGEST_STREAM=raw.messages
# Persisted state
DATA_DIR=/app/data # or wherever you mount the volume
# Logging
LOG_LEVEL=info
```
> ⚠ **Security note:** `DISCORD_ALLOWED_CHANNELS` is **empty by default**, which means the bot will respond in **no channels**. This is secure-by-default but easy to misconfigure. Set it explicitly.
## Persistent state
Two kinds of state to back up:
1. **`data/tally.json`** — per-spec run counts. Useful for analytics, not load-bearing.
2. **`data/summaries/`** — one `.txt` per resolved encounter. Permanent record.
Session state lives in Redis with a 12h TTL. If Redis is wiped, in-flight sessions are lost but Discord threads themselves remain — the bot will simply not find a session for that thread on next message. No data corruption risk.
## Health checks
The bot does not currently expose an HTTP health endpoint. Suggested liveness probe patterns:
- **Discord WebSocket liveness** — the bot logs `[bot] Logged in as <tag>` on ready. Scrape stdout for this.
- **Redis** — already externally monitored. The bot logs `[redis] connection error` on failure.
- **GraphMCP** — first call after startup will fail loudly if unreachable.
- **Custom probe** — call `/encounter status` in a known thread and check the response (the bot only responds in `DISCORD_ALLOWED_CHANNELS`).
A simple `docker` healthcheck using Discord WebSocket isn't trivially scriptable. If you need an HTTP probe, add a small Express server in a future iteration that responds 200 while the Discord client is `ready` and Redis is connected.
## Logging
The bot uses pino. In dev, `pino-pretty` formats to a human-readable stream. In prod, pino emits structured JSON to stdout — pipe to your log shipper (Loki, CloudWatch, etc.).
Useful fields to index:
- `level`, `time`, `msg`
- `threadId`, `encounterId` (for encounter-specific queries)
- `latencyMs` (for LLM and tool latency)
- `error` (for failure analysis)
## Operational runbook
### Restart the bot
```bash
docker restart mardonar-bot
# or: systemctl restart mardonar-bot
```
### Rotate the Discord token
1. Generate a new token in the Discord developer portal
2. Update the env var (or secret store)
3. Restart the bot
4. Old token is invalidated immediately
### Re-register slash commands
After changing any `src/bot/commands/*.ts`:
```bash
docker run --rm --env-file .env --network mardonar-internal mardonar-bot:latest \
node dist/scripts/deploy-commands.js
```
Or in dev: `npm run deploy-commands`
### Reset a stuck session
A bot restart clears all in-memory state (including reaction managers and burst counters). Redis session state persists. If a session is genuinely stuck (e.g. a tool dispatched but the response was lost), use `/encounter end` in-thread to force-resolve.
### Drain Redis (nuclear option)
```bash
docker exec -it <redis-container> redis-cli FLUSHDB
```
## Open deployment gaps
These are real but not blockers:
- **No production compose file** — only `docker-compose.dev.yml`. Production deploy is ad-hoc.
- **No CI/CD** — no `.github/workflows/`. Build and deploy are manual.
- **No health endpoint** — no HTTP probe target.
- **No metrics export** — pino logs are the only observability surface.
- **`docker-compose.dev.yml` references an external Docker network (`mardonar-internal`)** — fine for the dev stack it's designed for, but a fresh deployment needs to either join the same network or remove the reference.

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# Development Guide
> How to set up, run, test, and develop the Mardonar Encounter Engine. Generated 2026-06-19.
## Prerequisites
- **Node.js 22+** (matches the Dockerfile runtime)
- **Docker + Docker Compose** (for local Redis and Neo4j)
- **Ollama** running somewhere reachable, with `gemma4-it:e2b` pulled — *or* a LiteLLM proxy (preferred, set `LITELLM_BASE_URL`)
- **A Discord bot token and application ID** with a registered bot user
- npm 10+
## First-time setup
```bash
git clone <your-repo>
cd mardonar-npcs
npm install
cp .env.example .env
# Edit .env — at minimum set DISCORD_TOKEN, DISCORD_CLIENT_ID
```
The `.env` file is validated by Zod (`src/config.ts`) at import time. A missing required var (e.g. `DISCORD_TOKEN`) will crash the bot on startup with a clear error.
## Local services
```bash
docker compose -f docker-compose.dev.yml up -d
```
This starts:
- **Redis** on `localhost:6379`
- **Neo4j** on `localhost:7687` (browser UI at `http://localhost:7474`, login `neo4j` / `mardonardev`)
The `mardonar-internal` Docker network is declared as `external: true` — it expects to be created by the GraphMCP-Example stack. If you run just the bot without GraphMCP, you can remove that network reference, but `/encounter start` will fail at NPC memory lookup.
## Register slash commands
Run once per bot deployment, or whenever commands change:
```bash
npm run deploy-commands
```
If `DISCORD_GUILD_ID` is set, registers to that guild instantly. If unset, registers globally (up to 1h propagation delay). The deploy script also clears any lingering global commands first, to avoid double-registration.
## Run the bot
```bash
npm run dev # development: tsx watch mode (auto-reload)
npm run build # compile TypeScript to dist/
npm run start # run the compiled output
```
The bot logs to stdout (pino with `pino-pretty` in dev). Set `LOG_LEVEL=debug` for verbose output.
## Testing
```bash
npm run test # all tests
npm run test:unit # unit only (no external services)
npm run test:int # integration (requires docker compose up)
```
Test layout:
- `tests/unit/` — 21 fast unit tests with no external dependencies
- `tests/integration/phase1.test.ts` — requires running Redis + Neo4j
- `tests/fixtures/spec.ts` — shared spec fixture
Vitest is configured with v8 coverage. The `vitest.config.ts` includes `src/**/*.ts` for coverage and `tests/**/*.test.ts` for the test pattern.
## Adding a new encounter
1. Copy `specs/market-thief.yaml` to `specs/your-encounter.yaml`
2. Fill in: `encounterId`, `title`, `tone`, `setting`, `openingNarrative`, `npcs[]` (with optional `memoryKey` and `nameKey`), `goals`, `sportsmanshipRules`, `skillChecks` (group as `<name>_dc / <name>_skill / <name>_note` triples), and the `tools:` list
3. Add `randomizable[]` entries if you want parts of the spec (e.g. NPC names, item descriptions) to be filled from GraphMCP vocabulary at load time
4. In Discord: `/encounter start your-encounter`
See `specs/SPEC_FORMAT.md` for the canonical reference.
## Adding a new slash command
1. Create `src/bot/commands/<name>.ts` exporting `data` (SlashCommandBuilder) and `execute(interaction, client)`
2. Register it in `src/bot/index.ts` (`commands.set('<name>', ...)`)
3. Add it to `src/scripts/deploy-commands.ts` (`commands.push(data.toJSON())`)
4. Run `npm run deploy-commands`
## Adding a new LLM tool
1. Create `src/harness/tools/<name>.ts` with a `ToolPlugin` definition and call `registerTool(plugin)` at the bottom
2. Import the file in `src/harness/tools/index.ts` (side-effect import)
3. Reference it from any spec's `tools: [...]` array to make it active
4. Add a unit test in `tests/unit/`
The tool's `args` schema (string / number / boolean) is surfaced to the LLM via `buildToolManifest`, so the model sees typed arg descriptions in the system prompt. Use `contextDocs(spec)` to inject spec-specific guidance (e.g. preset DCs).
## Adding a new event handler
1. Create the handler in `src/bot/handlers/<name>.ts`
2. Wire it from `src/bot/index.ts` or another handler (e.g. `messageRouter`)
3. Prefer pure functions for transforms; reserve stateful modules for cross-call persistence
## Environment configuration reference
| Var | Default | Purpose |
|---|---|---|
| `DISCORD_TOKEN` | (required) | Bot user token |
| `DISCORD_CLIENT_ID` | (required) | Application ID |
| `DISCORD_GUILD_ID` | unset | If set, instant guild-scoped command registration |
| `DISCORD_ALLOWED_CHANNELS` | empty → no channels | Comma-separated channel IDs the bot will respond in |
| `DISCORD_ALLOWED_USERS` | empty → all users | Comma-separated user IDs allowed to run /encounter |
| `REDIS_URL` | `redis://localhost:6379` | ioredis connection string |
| `SESSION_TTL_HOURS` | 12 | Session TTL in Redis |
| `LITELLM_BASE_URL` | (recommended) | LiteLLM proxy URL — preferred LLM client |
| `LITELLM_API_KEY` | unset | Optional API key for the proxy |
| `LITELLM_MODEL` | falls back to `OLLAMA_MODEL` | Model name as configured in LiteLLM |
| `OLLAMA_BASE_URL` | `http://localhost:11434` | Ollama HTTP endpoint (fallback) |
| `OLLAMA_MODEL` | `gemma4-it:e2b` | Ollama model name |
| `OLLAMA_TEMPERATURE` | 0.75 | Sampling temperature (0–2) |
| `OLLAMA_NUM_CTX` | 131072 | Context window in tokens |
| `OLLAMA_TIMEOUT_MS` | 120000 | LLM call timeout |
| `GRAPHMCP_URL` | `http://localhost:9000` | GraphMCP JSON-RPC endpoint |
| `GRAPHMCP_SCORE_THRESHOLD` | 0.68 | Min similarity for NPC memory chunks |
| `GRAPHMCP_NPC_MEMORY_LIMIT` | 5 | Max memory chunks per NPC |
| `GRAPHMCP_MENTION_LIMIT` | 5 | Max chunks for @mention search |
| `GRAPHMCP_INGEST_STREAM` | `raw.messages` | Redis stream name for encounter ingest |
| `SPECS_DIR` | `./specs` | Encounter YAML directory |
| `ENCOUNTER_ARCHIVE_DELAY_MS` | 5000 | Delay before archiving resolved thread |
| `ENCOUNTER_GATE_TIMEOUT_MS` | 30000 | Player-gate embed auto-delete delay |
| `PERSONA_PATH` | `./persona.yaml` | @mention persona YAML |
| `DATA_DIR` | `./data` | Tally + summary directory |
| `VTT_RELAY_URL` | `https://vtt-relay.damascusfront.net` | Foundry VTT relay endpoint |
| `VTT_API_KEY` | empty → VTT disabled | API key for the relay |
| `VTT_CLIENT_ID` | empty | Client ID for the relay |
| `VTT_FOUNDRY_URL` | empty | Foundry URL for headless spin-up |
| `VTT_USERNAME` | empty | Foundry username |
| `VTT_PASSWORD` | empty | Foundry password (encrypted with RSA-OAEP for handoff) |
| `VTT_WORLD` | empty | Foundry world to launch |
| `LOG_LEVEL` | `info` | `trace` / `debug` / `info` / `warn` / `error` |
## Common tasks
### View current encounter state
In Discord, in an encounter thread: `/encounter status`
### List active encounters in the guild
`/encounter list`
### Search past encounters
`/encounters` then use the modal
### Force-end an encounter
`/encounter end [notes]`
### Inspect the most recent encounter summary
`/encounter audit` (DMs the file) — or read `data/summaries/` directly
### Tail the bot log
With pino-pretty in dev, logs are pretty-printed to stdout. In prod, pipe container stdout to your log shipper.
### Reset Redis state
```bash
docker compose -f docker-compose.dev.yml down -v
docker compose -f docker-compose.dev.yml up -d
```
## Troubleshooting
| Symptom | Likely cause |
|---|---|
| `ZodError` at startup | Missing or malformed env var. Check `.env` against `.env.example`. |
| `DISCORD_ALLOWED_CHANNELS` empty → bot never responds | The bot refuses to respond outside allowed channels by design. Set the env var. |
| `ECONNREFUSED` to Redis | `docker compose -f docker-compose.dev.yml up -d` not run, or wrong `REDIS_URL`. |
| `ECONNREFUSED` to GraphMCP | GraphMCP-Example stack not running, or wrong `GRAPHMCP_URL`. Encounter start will fail at NPC memory fetch. |
| LLM never responds | LiteLLM down → falls back to Ollama. Check `OLLAMA_BASE_URL` and that the model is pulled. |
| Tool call never fires | LLM emitted a `tool_call` block but the tool name is misspelled or not in the spec's `tools:` list. Check `toolParser` warnings. |
| Skill check embed buttons do nothing | `PENDING_ROLL_LIMIT` (5) reached; encounter auto-fails. Look for the `[SKILL CHECK RESULT] ... auto-cancelled` system message. |
| VTT integration silently skipped | `VTT_API_KEY` empty. Set the var to enable. |
| Spec fails to load | Run `/encounter spec` for the YAML. Schema is in `src/spec/loader.ts`. |
| High latency on LLM calls | Likely under-sized `OLLAMA_NUM_CTX` vs. assembled context. Check `CONTEXT_BUDGET` in `src/types/index.ts`. |
## Project conventions
- **TypeScript strict mode**, ESM modules, NodeNext resolution. All imports use `.js` extensions even for `.ts` source.
- **Shared types live only in `src/types/index.ts`.** Do not duplicate definitions elsewhere.
- **Tool plugins are self-registering** — each `harness/tools/<name>.ts` calls `registerTool()` at load. The `index.ts` aggregator imports them for side effects.
- **Discord embeds are pure builders** — no I/O, no `await`. Pass typed args, return an embed.
- **Event handlers live in `src/bot/handlers/`.** The runtime heart is `messageRouter.ts`.
- **In-world voice for player-facing strings** — see `feedback-in-world-voice` memory. No utility terms like "session", "user", "ephemeral" in bot messages.
- **All env access goes through `import { config }` from `src/config.ts`** — never read `process.env` directly.
- **Tests use Vitest globals** — no explicit `import { describe, it, expect }` in test files.

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# Mardonar Encounter Engine — Documentation Index
> Primary entry point for AI-assisted development. Generated 2026-06-19 from a deep scan.
## Project Overview
- **Type:** Monolith — single-part backend
- **Primary Language:** TypeScript (Node.js 22, ESM)
- **Architecture:** Layered backend with plugin-style LLM tool registry
- **Project name (config):** big-red
- **Repository name:** mardonar-npcs
## Quick Reference
- **Tech stack:** Node.js 22 · TypeScript 5.8 · discord.js v14 · LiteLLM (primary) + Ollama (fallback) · ioredis · GraphMCP JSON-RPC (Neo4j-backed) · Zod · pino · Vitest · Docker
- **Entry point:** `src/bot/index.ts` (compiled to `dist/bot/index.js`)
- **Architecture pattern:** Layered (bot → harness → session/db/graphmcp/vtt) with per-encounter tool plugin filtering
## Generated Documentation
- [Project Overview](./project-overview.md)
- [Architecture](./architecture.md)
- [Source Tree Analysis](./source-tree-analysis.md)
- [Component Inventory](./component-inventory.md)
- [Development Guide](./development-guide.md)
- [Deployment Guide](./deployment-guide.md)
- [API Contracts](./api-contracts.md)
- [Data Models](./data-models.md)
## Existing Documentation
These pre-existed in `Docs/` and were cross-referenced during generation. Note that some are partially out of date.
- [Docs/mardonar-encounter-engine.md](../Docs/mardonar-encounter-engine.md) — Original system design doc. **Out of date** — describes a Go bot with embedded MCP; the actual implementation is TypeScript with an external GraphMCP. Use `docs/architecture.md` as the source of truth.
- [Docs/mardonar-build-plan.md](../Docs/mardonar-build-plan.md) — Phased build plan with packages and test guidance
- [Docs/epics.md](../Docs/epics.md) — Epic list
- [Docs/stories/](../Docs/stories/) — Story specs (1.1, 1.2, 2.1, 3.1, 4.1)
- [Docs/ux-designs/ux-mardonar-2026-05-30/](../Docs/ux-designs/ux-mardonar-2026-05-30/) — UX session artifacts (EXPERIENCE.md, DESIGN.md, decision-log.md)
- [README.md](../README.md) — Player-facing intro, quick start, command list. Project-structure tree is out of date.
- [prd.md](../prd.md) — Active PRD: Dynamic Goal Registration
## Getting Started
1. Skim [Project Overview](./project-overview.md) (1 minute)
2. Read [Architecture](./architecture.md) sections 1–6 for the system design (10 minutes)
3. Read [Development Guide](./development-guide.md) "First-time setup" to get the bot running locally
4. For new feature work, start from [Component Inventory](./component-inventory.md) to find the right module, then read the linked source
## Conventions
- All player-facing bot strings use in-world voice — no utility terms like "session", "user", "ephemeral" (see `feedback-in-world-voice` memory).
- All env access goes through `import { config }` from `src/config.ts`.
- Tool plugins self-register via `registerTool()` at module load.
- Shared types live only in `src/types/index.ts`.
- Discord embeds are pure builders — no I/O.

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# Mardonar Encounter Engine — Project Overview
> Discord-native, LLM-driven D&D encounter engine. Generated 2026-06-19 from a deep scan.
## What it is
A Discord bot that runs structured D&D encounters. Each Discord thread is an encounter session. The bot loads a YAML spec, narrates the scene via an LLM (Gemma 4 IT e2b through LiteLLM with Ollama fallback), voices NPCs with stable personas, runs skill checks via Discord embeds, and persists NPC memory + encounter history into a graph database through GraphMCP (JSON-RPC over HTTP). Optional Foundry VTT integration pulls live character stats and awards XP via an external relay.
## Who it serves
Discord community members playing D&D 5e in the Land of Mardonar. The DM runs `/encounter start <spec>` to begin; players post their actions in the resulting thread. NPC personas are loaded from specs and grounded in long-term graph memory so that recurring NPCs remember prior interactions across encounters.
## Tech stack at a glance
| Layer | Technology |
|---|---|
| Runtime | Node.js 22 (ESM, TypeScript 5.8 strict) |
| Discord | discord.js v14 |
| LLM (primary) | LiteLLM proxy (env: `LITELLM_BASE_URL`) |
| LLM (fallback) | Ollama (env: `OLLAMA_BASE_URL`) — `gemma4-it:e2b`, 128k context |
| Session cache | Redis (ioredis), 12h TTL |
| Graph DB | Neo4j (via GraphMCP JSON-RPC, not direct) |
| Lore / NPC memory | GraphMCP HTTP JSON-RPC server |
| Foundry VTT | External relay (optional, requires API key) |
| Validation | Zod (env + encounter spec) |
| Logging | pino + pino-pretty |
| Testing | Vitest 3 (unit + integration) |
| Build | tsc → multi-stage Node 22 alpine Dockerfile |
## Architecture type
**Layered backend with a plugin-style tool registry.**
```
Discord ──▶ src/bot/ (commands, embeds, handlers)
│
▼
src/harness/ (promptBuilder, contextAssembler,
llmClient, toolParser, toolDispatcher,
tools/* plugin registry)
│
┌────────────┼────────────┐
▼ ▼ ▼
Redis GraphMCP VTT relay
(session (JSON-RPC: (Foundry
state) NPC memory, live stats,
lore, log) XP grants)
```
## Repository structure
**Single-part monolith.** All source under `src/`. The bot is one Node.js process that talks to external services over the network.
```
src/
├── bot/ # Discord I/O (commands, embeds, event handlers)
├── harness/ # LLM orchestration + 6 tool plugins
├── session/ # Redis-backed registries + session state
├── graphmcp/ # JSON-RPC client + Redis stream ingest
├── vtt/ # Foundry VTT relay client + spin-up
├── db/ # ioredis singleton
├── spec/ # YAML encounter loader + Zod schema
├── persona/ # persona.yaml loader
├── config.ts # Zod env validation
├── lib/ # logger
├── scripts/ # deploy-commands (slash command registration)
└── types/ # shared interfaces + CONTEXT_BUDGET
```
Plus `specs/` (8 encounter YAML files), `tests/` (22 test files), `data/` (runtime tally + summaries), and `Docs/` (pre-existing project documentation, partially out of date).
## Documentation
- [Architecture](./architecture.md) — full system design
- [Source Tree Analysis](./source-tree-analysis.md) — annotated directory tree
- [Component Inventory](./component-inventory.md) — reusable components
- [Development Guide](./development-guide.md) — setup, run, test, troubleshoot
- [Deployment Guide](./deployment-guide.md) — production deploy + ops
- [API Contracts](./api-contracts.md) — Discord commands + GraphMCP JSON-RPC
- [Data Models](./data-models.md) — session state, encounter spec, Neo4j graph
## Key features in the current codebase
- **Per-encounter tool filtering.** Each spec declares which tool plugins are active.
- **Dynamic goal registration** (the active PRD feature) — `tools/goalRegister.ts` lets the LLM add new goals mid-encounter.
- **Three-pattern tool parser** — handles fenced `tool_call`, bare `tool_call` header, and fuzzy bare JSON, so even smaller models can drive tools.
- **Self-spinning VTT relay** — when the relay is down, the bot handshakes via RSA-OAEP and launches a headless Foundry session on demand.
- **Burst cap with drop notices** — if too many messages arrive before the last LLM response, the bot drops the excess and posts a tone-aware notice.
- **Reaction lifecycle (👀)** — visible "I'm working on it" feedback through queued → processing → complete states.
- **NPC memory injection** at session start from GraphMCP, filtered by score threshold and capped at top-3 chunks above the threshold.
- **In-world voice** for player-facing strings — no utility/jargon (see `feedback-in-world-voice`).
## Known drift and open issues
- `Docs/mardonar-encounter-engine.md` describes a Go bot with embedded MCP — superseded by `docs/architecture.md` but still referenced by the README.
- `README.md`'s project-structure tree is out of date (mentions `src/mcp/`, missing commands).
- `src/types/index.ts` `EncounterSpec` diverged from `src/spec/loader.ts` Zod schema (missing `tone`, `tools`, `randomizable`, `nameKey`).
- Duplicate `trimHistory` between `sessionManager.ts` and `contextAssembler.ts`.
- No production `docker-compose.yml`, no CI/CD, no HTTP health endpoint.
- `DISCORD_ALLOWED_USERS` empty by default — channel-scoped access only.
See `docs/architecture.md §9` for full drift list.
## When you're ready to plan new features
Point the PRD workflow at [`docs/index.md`](./index.md) as input. For UI-facing work, `architecture.md §5.1` is the primary reference. For backend/LLM feature work, `architecture.md §5.2` and `docs/data-models.md` are the primary references.

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# Source Tree Analysis
> Annotated directory tree for the Mardonar Encounter Engine. Generated 2026-06-19.
## Top level
```
mardonar-npcs/
├── src/ # TypeScript source (compiled to dist/)
├── specs/ # Encounter YAML files (loaded by /encounter start)
├── tests/ # Vitest unit + integration suites
├── Docs/ # Pre-existing project documentation (encounter engine overview, build plan, epics, stories, UX designs)
├── lore/ # Game-world reference material
├── data/ # Runtime tally + per-encounter summaries (volume-mounted in prod)
├── scripts/ # Top-level utility scripts (only deploy-commands.ts lives here; the rest are under src/scripts)
├── docs/ # Generated by bmad-document-project (this folder)
├── node_modules/ # npm dependencies (gitignored)
├── dist/ # tsc output (gitignored)
├── Dockerfile # Multi-stage Node 22 alpine build
├── docker-compose.dev.yml # Local Redis + Neo4j orchestration
├── package.json
├── tsconfig.json # NodeNext ESM, strict, rootDir=src
├── vitest.config.ts # v8 coverage
├── .env / .env.example # Zod-validated env config
├── persona.yaml # @Zalram Cloudwalker persona
├── prd.md # Active PRD: Dynamic Goal Registration
└── README.md
```
## src/ — TypeScript source
### src/bot/ — Discord I/O layer
| Path | Role |
|---|---|
| `index.ts` | Entry point. Wires the discord.js `Client`, registers slash commands, dispatches `interactionCreate` and `messageCreate` to handlers. |
| `commands/` | One file per slash command. Each exports `data` (SlashCommandBuilder) and `execute(interaction, client)`. |
| `commands/dndname.ts` | `/dndname set\|show\|clear` — character name registration. |
| `commands/encounter.ts` | `/encounter start\|status\|end\|generate\|spec\|random\|stats\|audit` — encounter session lifecycle. |
| `commands/character.ts` | `/character register\|show\|view\|admin` — character profile + Foundry link modals. |
| `commands/roll.ts` | `/roll` — manual dice roll. |
| `commands/actions.ts` | `/actions` — in-character action shortcuts. |
| `commands/xp.ts` | `/xp award` — XP grant to a character. |
| `commands/encounters.ts` | `/encounters` — search/list encounters via GraphMCP. Includes select menu + search modal interactions. |
| `commands/turn.ts` | `/turn` — turn management. |
| `embeds/` | Discord embed builders. Pure functions taking typed args. |
| `embeds/playerGate.ts` | "Please register your character name" embed. |
| `embeds/skillCheck.ts` | Suspense embed → dice embed with roll buttons. |
| `embeds/resolution.ts` | Encounter complete embed. |
| `embeds/encounterDiscovery.ts` | Encounter search result embeds. |
| `embeds/loreAnswer.ts` | @mention lore response embed. |
| `handlers/` | Event handlers and sidecar logic. The runtime heart of the bot. |
| `handlers/messageRouter.ts` | Core encounter-thread message pipeline: gates, debounce, LLM call, tool dispatch. |
| `handlers/mentionHandler.ts` | @Zalram persona replies (uses `persona/loader.ts`). |
| `handlers/rollHandler.ts` | Button + modal submit skill-check roll resolution. |
| `handlers/generationQueue.ts` | Debounce + LLM turn scheduling (500ms coalesce). |
| `handlers/queueCap.ts` | Burst cap: drops messages if too many arrived before the last LLM response. |
| `handlers/reactionManager.ts` | 👀 reaction lifecycle: scheduled → processing → complete. |
| `handlers/responseFilter.ts` | Post-LLM response scrubbing (catches fabricated rolls, echoed system tags, empty responses). |
| `lib/welcomeDM.ts` | Welcome DM utility. |
### src/harness/ — LLM orchestration
| Path | Role |
|---|---|
| `promptBuilder.ts` | System prompt assembly. XML-sectioned: narrator, tone, sportsmanship, NPCs, players, setting, resolved context, skill checks, hidden goals, tool contract. |
| `contextAssembler.ts` | Builds the LLM message list: system + pinned history + trimmed sliding history. |
| `llmClient.ts` | Entry point. Routes to LiteLLM (primary) with Ollama fallback. |
| `litellmClient.ts` | OpenAI-compatible HTTP client for LiteLLM proxy. |
| `ollamaClient.ts` | Native `ollama` npm + direct HTTP fallback path. |
| `toolParser.ts` | Extracts `tool_call` blocks from LLM response. Three fallback patterns. |
| `toolRegistry.ts` | Plugin registry. `getActiveTools(spec.tools)` returns per-encounter active set. |
| `toolDispatcher.ts` | Validates tool name against active set, dispatches to plugin handler, logs result. |
| `tools/` | Tool plugin implementations. Each module calls `registerTool()` at load. |
| `tools/index.ts` | Side-effect imports — add new tool files here. |
| `tools/skillCheckEmit.ts` | Posts dice-roll embed; blocks input until resolved. Pulls player modifier from Foundry. |
| `tools/encounterResolve.ts` | Marks encounter complete, writes summary, archives thread. |
| `tools/contextRecall.ts` | Retrieves canonical session facts from `resolvedContext`. |
| `tools/goalRegister.ts` | Adds new goals mid-encounter (per `prd.md`). |
| `tools/foundryLookup.ts` | Live character data from VTT relay. |
| `tools/foundryReward.ts` | XP / item grant to a character via VTT. |
### src/session/ — Redis-backed state
| Path | Role |
|---|---|
| `playerRegistry.ts` | `(guildId, discordId) → Player` (DnD name). |
| `characterRegistry.ts` | Character profile: DnD name, pronouns, characterClass, race, level, backstory, Foundry actor UUID. |
| `sessionManager.ts` | `threadId → SessionState`. Pinned + sliding history trim by token budget. |
| `encounterLog.ts` | Filesystem tally + summary writer (one .txt per encounter in `data/summaries/`). |
| `xpAwarder.ts` | XP grant via VTT relay. |
### src/graphmcp/ — GraphMCP JSON-RPC client
| Path | Role |
|---|---|
| `client.ts` | 6 RPC calls + NPC memory formatter. |
| `ingest.ts` | Publishes encounter messages to Redis stream `raw.messages`. |
| `loreResolver.ts` | /encounter generate helper. |
| `vocabularyResolver.ts` | Resolves spec `randomizable:` entries (vocabulary or graphmcp source). |
### src/vtt/ — Foundry VTT integration
| Path | Role |
|---|---|
| `foundryClient.ts` | HTTP client. Live actor data + formatters. |
| `relaySession.ts` | RSA-OAEP encrypted handshake + headless Foundry session spin-up when relay is down. |
### Other src/ modules
| Path | Role |
|---|---|
| `db/redis.ts` | ioredis singleton (`lazyConnect`, `maxRetriesPerRequest: 3`). |
| `spec/loader.ts` | YAML loader + Zod schema (`EncounterSpecSchema`). |
| `persona/loader.ts` | persona.yaml loader for @mention. |
| `lib/logger.ts` | pino wrapper. |
| `config.ts` | Zod env schema + parsed config singleton. |
| `scripts/deploy-commands.ts` | Slash command registration via Discord REST v10. |
| `types/index.ts` | Shared interfaces + `CONTEXT_BUDGET` constant. |
## specs/ — Encounter YAML files
Loaded by `/encounter start <spec-name>`. `specs/SPEC_FORMAT.md` documents the schema. Current set:
- `market-thief.yaml` — the original "low-stakes warm-up" example used in the README
- `cog-claw-debt.yaml`
- `mawfang-pursuit.yaml`
- `silt-leak.yaml`
- `stormscar-pilgrim.yaml`
- `velvet-auction.yaml`
- `whispering-stone.yaml`
Each spec declares: `encounterId`, `title`, `tone`, `setting`, `openingNarrative`, `npcs[]` (with optional `nameKey` and `memoryKey`), `goals` (primary + secondary), `sportsmanshipRules`, `skillChecks` (grouped by suffix `_dc/_skill/_note`), `randomizable[]` (vocabulary or graphmcp queries with fallbacks), `tools[]`, and optional `dmNotes`.
## tests/ — Vitest suites
```
tests/
├── fixtures/spec.ts # shared spec fixture
├── unit/ # 21 unit test files (no external services)
│ ├── promptBuilder.test.ts
│ ├── contextAssembler.test.ts
│ ├── toolParser.test.ts
│ ├── toolDispatcher.test.ts
│ ├── sessionManager.test.ts
│ ├── playerRegistry.test.ts
│ ├── characterRegistry.test.ts
│ ├── specLoader.test.ts
│ ├── rollHandler.test.ts
│ ├── rollDetection.test.ts
│ ├── responseFilter.test.ts
│ ├── queueCap.test.ts
│ ├── generationQueue.test.ts
│ ├── reactionManager.test.ts
│ ├── encounterLog.test.ts
│ ├── encounterDiscoveryEmbed.test.ts
│ ├── loreAnswerEmbed.test.ts
│ ├── skillCheckEmbed.test.ts
│ ├── graphmcpClient.test.ts
│ ├── foundryClientRetry.test.ts
│ ├── foundryClientFormatters.test.ts
│ ├── goalRegister.test.ts
│ └── relaySession.test.ts
└── integration/
└── phase1.test.ts # requires running Docker services
```
## Docs/ — Pre-existing project documentation (historical)
| Path | Role |
|---|---|
| `mardonar-encounter-engine.md` | **Out of date** — describes a Go bot with embedded MCP layer. Treat as historical. The current `docs/architecture.md` supersedes it. |
| `mardonar-build-plan.md` | Phased build plan with packages and test guidance. |
| `epics.md` | Epic list. |
| `stories/` | Story specs (1.1, 1.2, 2.1, 3.1, 4.1). |
| `ux-designs/ux-mardonar-2026-05-30/` | UX session artifacts: `EXPERIENCE.md`, `DESIGN.md`, `.decision-log.md`. |
## Critical entry points
| What you want to change | Start here |
|---|---|
| Add a slash command | `src/bot/commands/`, then `src/scripts/deploy-commands.ts`, then run `npm run deploy-commands` |
| Add a tool the LLM can call | `src/harness/tools/<name>.ts`, register in `src/harness/tools/index.ts` |
| Change system prompt structure | `src/harness/promptBuilder.ts` |
| Change context window budget | `src/types/index.ts` → `CONTEXT_BUDGET` |
| Add an encounter | `specs/<name>.yaml` (see `specs/SPEC_FORMAT.md`) |
| Change message pipeline | `src/bot/handlers/messageRouter.ts` |
| Change LLM client | `src/harness/llmClient.ts` (router), `litellmClient.ts` / `ollamaClient.ts` (implementations) |
| Add a Foundry VTT feature | `src/vtt/`, then add a tool in `src/harness/tools/` |
| Add a GraphMCP-backed feature | `src/graphmcp/client.ts`, then add a tool |

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5
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"deploy-commands": "tsx src/scripts/deploy-commands.ts",
"test": "vitest run",
"test:unit": "vitest run tests/unit",
"test:int": "vitest run tests/integration"
"test:int": "vitest run tests/integration",
"test:coverage": "vitest run --coverage",
"test:watch": "vitest"
},
"dependencies": {
"@discordjs/builders": "^1.10.0",
@@ -30,6 +32,7 @@
"devDependencies": {
"@types/js-yaml": "^4.0.9",
"@types/node": "^22.0.0",
"@vitest/coverage-v8": "^3.2.6",
"ioredis-mock": "^8.9.0",
"tsx": "^4.19.0",
"typescript": "^5.8.0",

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# Tests
This directory holds the project's automated test suite.
## Layout
```
tests/
├── fixtures/ Shared test fixtures (spec, session, etc.)
├── integration/ Integration tests (require live infrastructure)
├── unit/ Unit tests (default CI gate)
└── README.md You are here
```
- **`unit/`** — fast, isolated tests for individual modules. No network, no
Redis, no Discord gateway. The CI default runs only this directory.
- **`integration/`** — slower tests that exercise real services (or mocks
close to the wire). Run explicitly; not part of the default test command.
- **`fixtures/`** — reusable mocks (`mockSession`, `mockSpec`) shared by
multiple unit tests.
## Running
```bash
npm test # alias for `npm run test:unit` + runs once (not watch)
npm run test:unit # run all tests in tests/unit
npm run test:int # run all tests in tests/integration
npm run test:coverage # run unit tests with v8 coverage report
npm run test:watch # vitest in watch mode
```
## Conventions
### 1. One module per file
A test file covers one source module. File name: `<moduleName>.test.ts`,
placed under `tests/unit/`. If a source module exports multiple functions
worth testing, group them with `describe` blocks in the same file.
### 2. Mock before import — always
`vi.mock` calls must appear *before* the import of the module under test,
otherwise the unmocked module is already cached. The pattern:
```ts
import { vi, describe, it, expect, beforeEach } from 'vitest';
const { mockFn } = vi.hoisted(() => ({ mockFn: vi.fn() }));
vi.mock('../../src/lib/logger.js', () => ({
log: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
}));
// ...more mocks...
import { myFunction } from '../../src/some/module.js'; // AFTER mocks
```
`vi.hoisted` lets you share mock state between a `vi.mock` factory and the
test body — both run in the same scope.
### 3. `vi.clearAllMocks()` in `beforeEach`
Prevents test bleed-through. If you also mutate config or module-level
state, reset it explicitly in `beforeEach`.
### 4. Reuse `mockSession` and `mockSpec`
Import from `../fixtures/spec.js`. Don't redefine session shape per file —
schema drift is one of the easier ways for tests to silently rot.
### 5. Test the *behavior*, not the implementation
Assert outcomes (return values, side effects on real collaborators, error
messages) rather than calling patterns. When a test would only pass with a
specific internal implementation, ask whether the contract is what's
documented in the source's doc comment.
### 6. Don't hit the network
- `fetch` → use `vi.stubGlobal('fetch', ...)` (see `foundryClientRetry.test.ts`).
- Discord client → pass a hand-rolled mock with only the methods the code uses
(e.g. `messages.fetch`, `send`, `sendTyping`, `setArchived`).
- Redis → use `ioredis-mock` (see `sessionManager.test.ts`).
- LLM SDKs → mock the constructor (see `litellmClient.test.ts`,
`ollamaClient.test.ts`).
- Filesystem → use `mkdtempSync` from `node:os.tmpdir()` (see
`personaLoader.test.ts`).
### 7. Player-facing strings
When a test asserts on a string the bot would say to a player, prefer
in-world language over utility terms. (Same rule that applies to production
code — see `feedback-in-world-voice` memory.)
## Anti-patterns
- **Asserting private state.** Reach for behaviour-side assertions first.
- **Resetting state with `vi.resetModules()` for the sake of it.** It breaks
shared mock state. Use it only when a module-scoped cache (e.g. a lazy
client) needs to be re-constructed.
- **Catching all errors in a test.** If a test passes by accident because an
unhandled rejection was swallowed, it's not testing anything.
- **Mocking the module under test.** If you have to mock the file you're
testing, the test is asserting nothing.
- **Timeouts in `it()` callbacks.** Use `vi.useFakeTimers()` and
`vi.advanceTimersByTimeAsync` to step time deterministically (see
`messageRouterRunLLMTurn.test.ts` for the typing-indicator pattern).
## Adding a new test
1. Create `tests/unit/<name>.test.ts`.
2. Use the closest existing test as a template — `goalRegister.test.ts` for
tool plugins, `foundryClientRetry.test.ts` for HTTP, `relaySession.test.ts`
for `node:https` / `node:crypto`, `sessionManager.test.ts` for Redis.
3. Run `npm run test:unit -- <your-file>` to iterate quickly.
4. When green, run the full suite: `npm run test:unit`.
5. Optional: check `npm run test:coverage` to confirm the file's coverage.
## Coverage
`npm run test:coverage` produces a v8 coverage report in the terminal.
Directories worth watching:
- `src/bot/handlers/` — message routing; `runLLMTurn` is the runtime heart.
- `src/harness/tools/` — the tool plugin contracts.
- `src/vtt/` — Foundry relay; `foundryClient` is the biggest single file.
Coverage is informational, not a gate. The goal is to grow the unit test
surface for the modules that own irreversible or user-facing behavior.

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import { vi, describe, it, expect, beforeEach } from 'vitest';
// ── registry mocks ───────────────────────────────────────────────────────────
const { mockGet: mockCharacterGet } = vi.hoisted(() => ({
mockGet: vi.fn(),
}));
vi.mock('../../src/session/characterRegistry.js', () => ({
characterRegistry: { get: mockCharacterGet },
}));
const { mockModifyExperience, mockGiveItem } = vi.hoisted(() => ({
mockModifyExperience: vi.fn(),
mockGiveItem: vi.fn(),
}));
vi.mock('../../src/vtt/foundryClient.js', () => ({
modifyExperience: mockModifyExperience,
giveItem: mockGiveItem,
}));
import { dispatchTool } from '../../src/harness/toolDispatcher.js';
import { mockSession } from '../fixtures/spec.js';
function makeThread() {
return { send: vi.fn().mockResolvedValue({ id: 'msg-1' }) };
}
const playerSession = {
...mockSession,
players: {
'user-1': { discordId: 'user-1', dndName: 'Aelindra' },
},
};
beforeEach(() => {
vi.clearAllMocks();
mockModifyExperience.mockResolvedValue(undefined);
mockGiveItem.mockResolvedValue(undefined);
});
describe('dispatchTool — foundry_reward', () => {
it('awards both XP and item to a registered Foundry-linked player', async () => {
mockCharacterGet.mockResolvedValue({
discordId: 'user-1',
dndName: 'Aelindra',
source: 'foundry',
foundryActorUuid: 'Actor.abc',
});
const result = await dispatchTool(
{
tool: 'foundry_reward',
args: {
player_discord_name: 'Aelindra',
xp_amount: 50,
item_name: 'Potion of Healing',
reason: 'Caught the thief.',
},
},
{ session: playerSession, thread: makeThread() as any },
);
expect(result.systemMessage).toContain('[FOUNDRY REWARD]');
expect(result.systemMessage).toContain('Aelindra');
expect(result.systemMessage).toContain('Potion of Healing');
expect(result.systemMessage).toContain('50 XP');
expect(result.systemMessage).toContain('Caught the thief.');
expect(mockModifyExperience).toHaveBeenCalledWith('Actor.abc', 50);
expect(mockGiveItem).toHaveBeenCalledWith('Actor.abc', 'Potion of Healing');
});
it('matches player name case-insensitively', async () => {
mockCharacterGet.mockResolvedValue({
discordId: 'user-1',
dndName: 'Aelindra',
source: 'foundry',
foundryActorUuid: 'Actor.abc',
});
await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'aelindra', xp_amount: 10, reason: 'good roleplay' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(mockModifyExperience).toHaveBeenCalledWith('Actor.abc', 10);
});
it('awards only XP when item_name is omitted', async () => {
mockCharacterGet.mockResolvedValue({
discordId: 'user-1', dndName: 'Aelindra', source: 'foundry', foundryActorUuid: 'Actor.abc',
});
await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'Aelindra', xp_amount: 25, reason: 'milestone' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(mockModifyExperience).toHaveBeenCalledWith('Actor.abc', 25);
expect(mockGiveItem).not.toHaveBeenCalled();
});
it('awards only an item when xp_amount is zero', async () => {
mockCharacterGet.mockResolvedValue({
discordId: 'user-1', dndName: 'Aelindra', source: 'foundry', foundryActorUuid: 'Actor.abc',
});
await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'Aelindra', xp_amount: 0, item_name: 'Gold Piece', reason: 'tip' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(mockGiveItem).toHaveBeenCalledWith('Actor.abc', 'Gold Piece');
expect(mockModifyExperience).not.toHaveBeenCalled();
});
it('skips XP when xp_amount is missing', async () => {
mockCharacterGet.mockResolvedValue({
discordId: 'user-1', dndName: 'Aelindra', source: 'foundry', foundryActorUuid: 'Actor.abc',
});
await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'Aelindra', item_name: 'Ring', reason: 'find' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(mockGiveItem).toHaveBeenCalledWith('Actor.abc', 'Ring');
expect(mockModifyExperience).not.toHaveBeenCalled();
});
it('returns a "no player" system message and does not call Foundry when the player is not in the session', async () => {
const result = await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'Nobody', xp_amount: 5, reason: 'typo' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(result.systemMessage).toContain('No player found matching "Nobody"');
expect(mockCharacterGet).not.toHaveBeenCalled();
expect(mockModifyExperience).not.toHaveBeenCalled();
expect(mockGiveItem).not.toHaveBeenCalled();
});
it('returns a "no character record" message when the player has no Foundry UUID', async () => {
mockCharacterGet.mockResolvedValue({
discordId: 'user-1', dndName: 'Aelindra', source: 'custom', /* no foundryActorUuid */
});
const result = await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'Aelindra', xp_amount: 5, reason: 'try' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(result.systemMessage).toContain('No character record found for this player');
expect(mockModifyExperience).not.toHaveBeenCalled();
expect(mockGiveItem).not.toHaveBeenCalled();
});
it('returns a "no character record" message when the player has no profile at all', async () => {
mockCharacterGet.mockResolvedValue(null);
const result = await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'Aelindra', xp_amount: 5, reason: 'try' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(result.systemMessage).toContain('No character record found for this player');
expect(mockModifyExperience).not.toHaveBeenCalled();
});
it('catches errors from characterRegistry and returns the friendly error', async () => {
mockCharacterGet.mockRejectedValue(new Error('redis down'));
const result = await dispatchTool(
{
tool: 'foundry_reward',
args: { player_discord_name: 'Aelindra', xp_amount: 5, reason: 'try' },
},
{ session: playerSession, thread: makeThread() as any },
);
expect(result.systemMessage).toContain('Character records are inaccessible');
expect(mockModifyExperience).not.toHaveBeenCalled();
});
});

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import { vi, describe, it, expect, beforeEach } from 'vitest';
// ── config mock ──────────────────────────────────────────────────────────────
vi.mock('../../src/config.js', () => ({
config: {
LITELLM_BASE_URL: 'http://100.83.8.74:4000',
LITELLM_API_KEY: 'test-key',
LITELLM_MODEL: 'ollama-cloud',
OLLAMA_TEMPERATURE: 0.75,
OLLAMA_TIMEOUT_MS: 120_000,
OLLAMA_MODEL: 'gemma4-it:e2b',
},
}));
vi.mock('../../src/lib/logger.js', () => ({
log: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
}));
// ── openai client mock ────────────────────────────────────────────────────────
const { mockCreate } = vi.hoisted(() => ({
mockCreate: vi.fn(),
}));
vi.mock('openai', () => ({
default: vi.fn().mockImplementation(() => ({
chat: { completions: { create: mockCreate } },
})),
}));
import { callLLM } from '../../src/harness/litellmClient.js';
beforeEach(() => {
vi.clearAllMocks();
// Reset LITELLM_MODEL in case a previous test mutated it.
return import('../../src/config.js').then(({ config }) => {
(config as Record<string, unknown>).LITELLM_MODEL = 'ollama-cloud';
});
});
describe('litellmClient.callLLM', () => {
it('returns parsed narrative and tool call from the OpenAI-compatible response', async () => {
mockCreate.mockResolvedValueOnce({
choices: [
{
message: {
content: 'Roll for initiative. ```tool_call\n{"tool":"encounter_resolve","args":{"sessionId":"s1","outcomeId":"catch","summary":"Caught him"}}\n```',
},
},
],
usage: { completion_tokens: 88, prompt_tokens: 4000 },
});
const result = await callLLM([{ role: 'user', content: 'I tackle him.', timestamp: 1 }]);
expect(result.narrative).toBe('Roll for initiative.');
expect(result.toolCall?.tool).toBe('encounter_resolve');
expect(result.toolCall?.args).toEqual({ sessionId: 's1', outcomeId: 'catch', summary: 'Caught him' });
expect(result.rawTokensUsed).toBe(88);
});
it('configures the OpenAI client with the LiteLLM base URL + API key + timeout', async () => {
// Force a fresh litellmClient so its cached _client is re-constructed with
// the current config values.
vi.resetModules();
const OpenAI = (await import('openai')).default;
const { callLLM: freshCallLLM } = await import('../../src/harness/litellmClient.js');
mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: 'ok' } }] });
await freshCallLLM([{ role: 'user', content: 'hi', timestamp: 1 }]);
expect(OpenAI).toHaveBeenCalledWith({
baseURL: 'http://100.83.8.74:4000/v1',
apiKey: 'test-key',
timeout: 120_000,
});
});
it('falls back to the literal string "no-key" when LITELLM_API_KEY is empty', async () => {
const { config } = await import('../../src/config.js');
(config as Record<string, unknown>).LITELLM_API_KEY = '';
vi.resetModules();
const OpenAI = (await import('openai')).default;
const { callLLM: freshCallLLM } = await import('../../src/harness/litellmClient.js');
mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: 'ok' } }] });
await freshCallLLM([{ role: 'user', content: 'hi', timestamp: 1 }]);
expect(OpenAI).toHaveBeenCalledWith(
expect.objectContaining({ apiKey: 'no-key' }),
);
});
it('uses LITELLM_MODEL when set, otherwise falls back to OLLAMA_MODEL', async () => {
const { config } = await import('../../src/config.js');
(config as Record<string, unknown>).LITELLM_MODEL = 'big-model';
mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: 'ok' } }] });
await callLLM([{ role: 'user', content: 'a', timestamp: 1 }]);
expect(mockCreate).toHaveBeenLastCalledWith(
expect.objectContaining({ model: 'big-model' }),
);
(config as Record<string, unknown>).LITELLM_MODEL = undefined;
mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: 'ok' } }] });
await callLLM([{ role: 'user', content: 'b', timestamp: 2 }]);
expect(mockCreate).toHaveBeenLastCalledWith(
expect.objectContaining({ model: 'gemma4-it:e2b' }),
);
});
it('passes messages and temperature through to the OpenAI client', async () => {
mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: 'ok' } }] });
await callLLM([
{ role: 'system', content: 'sys', timestamp: 0 },
{ role: 'user', content: 'hi', timestamp: 1 },
]);
expect(mockCreate).toHaveBeenCalledWith({
model: 'ollama-cloud',
messages: [
{ role: 'system', content: 'sys' },
{ role: 'user', content: 'hi' },
],
temperature: 0.75,
});
});
it('returns an empty narrative when the model response is empty', async () => {
mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: '' } }] });
const result = await callLLM([{ role: 'user', content: '...', timestamp: 1 }]);
expect(result.narrative).toBe('');
expect(result.toolCall).toBeUndefined();
});
it('falls back to an empty string when the response has no choices at all', async () => {
mockCreate.mockResolvedValueOnce({ choices: [] });
const result = await callLLM([{ role: 'user', content: '...', timestamp: 1 }]);
expect(result.narrative).toBe('');
expect(result.toolCall).toBeUndefined();
});
it('handles a missing usage field without crashing', async () => {
mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: 'ok' } }] });
const result = await callLLM([{ role: 'user', content: '...', timestamp: 1 }]);
expect(result.rawTokensUsed).toBeUndefined();
});
it('propagates errors from the OpenAI client', async () => {
mockCreate.mockRejectedValueOnce(new Error('rate limit exceeded'));
await expect(
callLLM([{ role: 'user', content: 'hi', timestamp: 1 }]),
).rejects.toThrow('rate limit exceeded');
});
});

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import { vi, describe, it, expect, beforeEach, afterEach } from 'vitest';
// ── assembled-context mock ───────────────────────────────────────────────────
const { mockAssembleContext } = vi.hoisted(() => ({
mockAssembleContext: vi.fn(),
}));
vi.mock('../../src/harness/contextAssembler.js', () => ({
assembleContext: mockAssembleContext,
}));
// ── LLM client mock ──────────────────────────────────────────────────────────
const { mockCallLLM } = vi.hoisted(() => ({
mockCallLLM: vi.fn(),
}));
vi.mock('../../src/harness/llmClient.js', () => ({
callLLM: mockCallLLM,
}));
// ── dispatchTool mock ────────────────────────────────────────────────────────
const { mockDispatchTool } = vi.hoisted(() => ({
mockDispatchTool: vi.fn(),
}));
vi.mock('../../src/harness/toolDispatcher.js', () => ({
dispatchTool: mockDispatchTool,
}));
// ── sessionManager mock ──────────────────────────────────────────────────────
const { mockAddMessage, mockUpdate, mockGet } = vi.hoisted(() => ({
mockAddMessage: vi.fn(),
mockUpdate: vi.fn(),
mockGet: vi.fn(),
}));
vi.mock('../../src/session/sessionManager.js', () => ({
sessionManager: {
addMessage: mockAddMessage,
update: mockUpdate,
get: mockGet,
},
}));
// ── responseFilter mock ──────────────────────────────────────────────────────
const { mockFilterLLMResponse, mockDetectMissedSkillCheck, mockLogFiltered } = vi.hoisted(() => ({
mockFilterLLMResponse: vi.fn(),
mockDetectMissedSkillCheck: vi.fn(),
mockLogFiltered: vi.fn(),
}));
vi.mock('../../src/bot/handlers/responseFilter.js', () => ({
filterLLMResponse: mockFilterLLMResponse,
detectMissedSkillCheck: mockDetectMissedSkillCheck,
logFiltered: mockLogFiltered,
}));
// ── reaction / burst mocks ───────────────────────────────────────────────────
vi.mock('../../src/bot/handlers/reactionManager.js', () => ({
registerScheduled: vi.fn(),
drainPending: vi.fn(() => []),
clearPending: vi.fn(),
upgradeToProcessing: vi.fn(),
upgradeToComplete: vi.fn(),
cleanupReactions: vi.fn(),
}));
vi.mock('../../src/bot/handlers/queueCap.js', () => ({
isBurstCapped: vi.fn(() => false),
incrementBurst: vi.fn(),
resetBurst: vi.fn(),
sendDropNotice: vi.fn(),
}));
vi.mock('../../src/lib/logger.js', () => ({
log: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
}));
// ── subject under test ───────────────────────────────────────────────────────
// Import AFTER all vi.mock calls. We re-import per-test where needed so we can
// attach vi.spyOn() to the module's scheduleEncounterLLMTurn export.
let runLLMTurn: typeof import('../../src/bot/handlers/messageRouter.js').runLLMTurn;
let scheduleSpy: ReturnType<typeof vi.spyOn>;
import { mockSession } from '../fixtures/spec.js';
import type { SessionState } from '../../src/types/index.js';
function makeThread(extra: Partial<{ setArchived: any }> = {}) {
const thread: any = {
send: vi.fn().mockResolvedValue({ id: 'sent-msg' }),
sendTyping: vi.fn().mockResolvedValue(undefined),
setArchived: extra.setArchived ?? vi.fn().mockResolvedValue(undefined),
messages: { fetch: vi.fn().mockResolvedValue(null) },
};
return thread;
}
function sessionWith(history: SessionState['history'], pending?: SessionState['pendingSkillCheck']): SessionState {
return { ...mockSession, history, pendingSkillCheck: pending };
}
beforeEach(async () => {
vi.clearAllMocks();
vi.useFakeTimers();
// Re-import the module under test each time so we can spy on its
// scheduleEncounterLLMTurn export. The mocks are reused across imports.
const mod = await import('../../src/bot/handlers/messageRouter.js');
runLLMTurn = mod.runLLMTurn;
scheduleSpy = vi.spyOn(mod, 'scheduleEncounterLLMTurn').mockImplementation(() => undefined);
// Always default: context assembles to something, filter accepts everything.
mockAssembleContext.mockReturnValue([{ role: 'system', content: 'sys', timestamp: 0 }]);
mockFilterLLMResponse.mockReturnValue({ ok: true });
mockDetectMissedSkillCheck.mockReturnValue(false);
mockAddMessage.mockResolvedValue(undefined);
mockUpdate.mockResolvedValue(undefined);
mockGet.mockImplementation(async (threadId: string) => ({ ...mockSession, threadId }));
mockDispatchTool.mockResolvedValue({ systemMessage: '[TOOL] done', resolved: undefined, error: undefined });
});
afterEach(() => {
vi.useRealTimers();
});
describe('runLLMTurn — narrative-only response (no tool call)', () => {
it('posts the narrative to the thread', async () => {
mockCallLLM.mockResolvedValueOnce({ narrative: 'The wind howls.', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(thread.send).toHaveBeenCalledWith('The wind howls.');
});
it('stores the assistant narrative in session history', async () => {
mockCallLLM.mockResolvedValueOnce({ narrative: 'A leaf falls.', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockAddMessage).toHaveBeenCalledWith(
mockSession.threadId,
expect.objectContaining({ role: 'assistant', content: 'A leaf falls.' }),
);
});
it('does not call dispatchTool when there is no tool call', async () => {
mockCallLLM.mockResolvedValueOnce({ narrative: 'quiet.', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockDispatchTool).not.toHaveBeenCalled();
});
it('passes skipRollClaim:true when a [SKILL CHECK RESULT] message is in the recent 6 messages', async () => {
mockCallLLM.mockResolvedValueOnce({ narrative: 'You rolled a 15 and hit the goblin.', toolCall: undefined });
const thread = makeThread();
const history: SessionState['history'] = [
{ role: 'system', content: '[SKILL CHECK RESULT] Aelindra rolled 15 vs DC 12. Result: SUCCESS.', timestamp: 1 },
];
await runLLMTurn(sessionWith(history), thread, {} as any);
expect(mockFilterLLMResponse).toHaveBeenCalledWith(
'You rolled a 15 and hit the goblin.',
{ skipRollClaim: true },
);
});
it('passes skipRollClaim:false when no recent [SKILL CHECK RESULT] message exists', async () => {
mockCallLLM.mockResolvedValueOnce({ narrative: '...', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockFilterLLMResponse).toHaveBeenCalledWith('...', { skipRollClaim: false });
});
});
describe('runLLMTurn — filter correction', () => {
it('on filter rejection with no recent correction, sends a [FILTER CORRECTION] system message', async () => {
mockFilterLLMResponse.mockReturnValue({ ok: false, reason: 'fabricated_roll_result' });
mockCallLLM.mockResolvedValueOnce({ narrative: 'You rolled a 17.', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockLogFiltered).toHaveBeenCalledWith(
'fabricated_roll_result',
'You rolled a 17.',
expect.objectContaining({ threadId: mockSession.threadId, encounterId: mockSession.encounterId }),
);
expect(mockAddMessage).toHaveBeenCalledWith(
mockSession.threadId,
expect.objectContaining({
role: 'system',
content: expect.stringMatching(/^\[FILTER CORRECTION\]/),
}),
);
// The retry path also invokes scheduleEncounterLLMTurn with immediate=true.
// (We can't reliably observe the internal call via the export spy in ESM
// live-bindings, so we verify the side effects directly.)
const correction = mockAddMessage.mock.calls.find(([_, m]) =>
(m as { content: string }).content.startsWith('[FILTER CORRECTION]'),
)?.[1] as { content: string };
expect(correction.content).toMatch(/Do NOT state or imply a specific dice result/);
});
it('on filter rejection when last message is already a correction, skips the retry to avoid loops', async () => {
mockFilterLLMResponse.mockReturnValue({ ok: false, reason: 'empty_response' });
mockCallLLM.mockResolvedValueOnce({ narrative: '', toolCall: undefined });
const thread = makeThread();
const history: SessionState['history'] = [
{ role: 'system', content: '[FILTER CORRECTION] previous turn suppressed (empty_response).', timestamp: 1 },
];
await runLLMTurn(sessionWith(history), thread, {} as any);
// No new correction message should be added when one was just sent.
const correctionAdds = mockAddMessage.mock.calls.filter(([_, m]) =>
(m as { content: string }).content.startsWith('[FILTER CORRECTION]'),
);
expect(correctionAdds).toHaveLength(0);
});
it('uses the echoed_system_tag correction text when filter rejects for that reason', async () => {
mockFilterLLMResponse.mockReturnValue({ ok: false, reason: 'echoed_system_tag' });
mockCallLLM.mockResolvedValueOnce({ narrative: '[TOOL] something', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
const correction = mockAddMessage.mock.calls.find(([_, m]) =>
(m as { content: string }).content.startsWith('[FILTER CORRECTION]'),
)?.[1] as { content: string };
expect(correction.content).toMatch(/Do NOT echo internal system tags/);
});
it('does NOT post the filtered narrative to the thread', async () => {
mockFilterLLMResponse.mockReturnValue({ ok: false, reason: 'fabricated_roll_result' });
mockCallLLM.mockResolvedValueOnce({ narrative: 'You rolled a 17.', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(thread.send).not.toHaveBeenCalledWith('You rolled a 17.');
});
});
describe('runLLMTurn — tool call dispatch', () => {
it('dispatches the toolCall with a freshly fetched session and writes the system message', async () => {
mockCallLLM.mockResolvedValueOnce({
narrative: '',
toolCall: { tool: 'goal_register', args: { goals: ['x'] } },
});
const freshSession = { ...mockSession, fetched: true };
mockGet.mockResolvedValueOnce(freshSession);
mockDispatchTool.mockResolvedValueOnce({ systemMessage: '[TOOL] ok', error: undefined, resolved: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockGet).toHaveBeenCalledWith(mockSession.threadId);
expect(mockDispatchTool).toHaveBeenCalledWith(
{ tool: 'goal_register', args: { goals: ['x'] } },
expect.objectContaining({ session: freshSession, thread }),
);
expect(mockAddMessage).toHaveBeenCalledWith(
mockSession.threadId,
expect.objectContaining({ role: 'system', content: '[TOOL] ok' }),
);
});
it('posts a friendly fallback message when dispatchTool returns an error', async () => {
mockCallLLM.mockResolvedValueOnce({
narrative: '',
toolCall: { tool: 'goal_register', args: {} },
});
mockDispatchTool.mockResolvedValueOnce({ systemMessage: '[TOOL] failed', error: new Error('boom'), resolved: undefined });
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(thread.send).toHaveBeenCalledWith(expect.stringMatching(/narrator stumbles/));
});
it('marks the session resolved and schedules archive when tool reports resolved', async () => {
mockCallLLM.mockResolvedValueOnce({
narrative: '',
toolCall: { tool: 'encounter_resolve', args: { outcomeId: 'catch', summary: 'got him' } },
});
mockDispatchTool.mockResolvedValueOnce({
systemMessage: '[TOOL] resolved',
resolved: { outcomeId: 'catch', summary: 'got him' },
error: undefined,
});
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockUpdate).toHaveBeenCalledWith(mockSession.threadId, {
phase: 'resolved',
outcome: 'catch',
outcomeSummary: 'got him',
});
// The archive setTimeout fires after 5 seconds.
expect(thread.setArchived).not.toHaveBeenCalled();
await vi.advanceTimersByTimeAsync(5_000);
expect(thread.setArchived).toHaveBeenCalledWith(true);
});
it('does not throw and returns early when the session was deleted before dispatch', async () => {
mockCallLLM.mockResolvedValueOnce({
narrative: '',
toolCall: { tool: 'goal_register', args: {} },
});
mockGet.mockResolvedValueOnce(null); // session disappeared
const thread = makeThread();
await expect(runLLMTurn(sessionWith([]), thread, {} as any)).resolves.toBeUndefined();
expect(mockDispatchTool).not.toHaveBeenCalled();
});
it('still dispatches the tool even when the narrative was filtered', async () => {
mockFilterLLMResponse.mockReturnValue({ ok: false, reason: 'fabricated_roll_result' });
mockCallLLM.mockResolvedValueOnce({
narrative: 'You rolled a 12. ',
toolCall: { tool: 'goal_register', args: { foo: 'bar' } },
});
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockDispatchTool).toHaveBeenCalled();
// But the narrative was suppressed.
expect(thread.send).not.toHaveBeenCalledWith('You rolled a 12.');
});
});
describe('runLLMTurn — LLM error', () => {
it('posts a friendly error message when the LLM throws and clears the typing interval', async () => {
mockCallLLM.mockRejectedValueOnce(new Error('503 from upstream'));
const thread = makeThread();
const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(consoleSpy).toHaveBeenCalledWith('[messageRouter] LLM call failed:', expect.any(Error));
expect(thread.send).toHaveBeenCalledWith(expect.stringMatching(/narrator pauses/));
// The interval would normally fire every 8s — advance to confirm it's gone.
await vi.advanceTimersByTimeAsync(20_000);
expect(thread.sendTyping).toHaveBeenCalled();
// No filter or dispatch should have happened.
expect(mockFilterLLMResponse).not.toHaveBeenCalled();
expect(mockDispatchTool).not.toHaveBeenCalled();
consoleSpy.mockRestore();
});
});
describe('runLLMTurn — missed skill check heuristic', () => {
it('logs a warning when the narrative asks for a roll but no tool call was emitted and no roll is pending', async () => {
mockCallLLM.mockResolvedValueOnce({ narrative: 'Make a Strength check.', toolCall: undefined });
mockDetectMissedSkillCheck.mockReturnValueOnce(true);
const thread = makeThread();
await runLLMTurn(sessionWith([]), thread, {} as any);
expect(mockDetectMissedSkillCheck).toHaveBeenCalledWith('Make a Strength check.');
});
it('skips the heuristic when a roll result is already pending', async () => {
mockCallLLM.mockResolvedValueOnce({ narrative: 'Make a check.', toolCall: undefined });
const thread = makeThread();
await runLLMTurn(
sessionWith([], { player: 'Aelindra', dc: 12, messageId: 'm1' }),
thread,
{} as any,
);
expect(mockDetectMissedSkillCheck).not.toHaveBeenCalled();
});
});
describe('runLLMTurn — typing indicator', () => {
it('starts a typing indicator that fires every 8s while the LLM is being awaited', async () => {
// Make callLLM slow so we can observe the interval
let resolveCall!: (v: unknown) => void;
mockCallLLM.mockReturnValueOnce(new Promise(r => { resolveCall = r; }));
const thread = makeThread();
const pending = runLLMTurn(sessionWith([]), thread, {} as any);
expect(thread.sendTyping).toHaveBeenCalledTimes(1);
await vi.advanceTimersByTimeAsync(8_000);
expect(thread.sendTyping).toHaveBeenCalledTimes(2);
resolveCall({ narrative: 'ok', toolCall: undefined });
await pending;
// After resolution the interval is cleared; advancing further should not send typing again.
const callsBefore = thread.sendTyping.mock.calls.length;
await vi.advanceTimersByTimeAsync(20_000);
expect(thread.sendTyping.mock.calls.length).toBe(callsBefore);
});
});

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import { vi, describe, it, expect, beforeEach } from 'vitest';
// ── config mock (must come before module under test) ──────────────────────────
vi.mock('../../src/config.js', () => ({
config: {
OLLAMA_BASE_URL: 'http://localhost:11434',
OLLAMA_MODEL: 'gemma4-it:e2b',
OLLAMA_TEMPERATURE: 0.75,
OLLAMA_NUM_CTX: 131072,
},
}));
vi.mock('../../src/lib/logger.js', () => ({
log: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
}));
// ── ollama npm client mock ────────────────────────────────────────────────────
const { mockChat } = vi.hoisted(() => ({
mockChat: vi.fn(),
}));
vi.mock('ollama', () => ({
Ollama: vi.fn().mockImplementation(() => ({
chat: mockChat,
})),
}));
import { callLLM } from '../../src/harness/ollamaClient.js';
beforeEach(() => {
vi.clearAllMocks();
});
describe('ollamaClient.callLLM', () => {
it('returns parsed narrative and tool call from the ollama response', async () => {
mockChat.mockResolvedValueOnce({
message: { content: 'The goblin snarls. ```tool_call\n{"tool":"skill_check_emit","args":{"player":"Aelindra","prompt":"Strike","dc":12}}\n```' },
eval_count: 42,
});
const result = await callLLM([{ role: 'user', content: 'I attack.', timestamp: 1 }]);
expect(result.narrative).toBe('The goblin snarls.');
expect(result.toolCall?.tool).toBe('skill_check_emit');
expect(result.rawTokensUsed).toBe(42);
});
it('passes messages, model, stream:false, and options to the ollama client', async () => {
mockChat.mockResolvedValueOnce({ message: { content: 'ok' }, eval_count: 5 });
await callLLM([
{ role: 'system', content: 'You are the DM.', timestamp: 0 },
{ role: 'user', content: 'I look around.', timestamp: 1 },
]);
expect(mockChat).toHaveBeenCalledWith({
model: 'gemma4-it:e2b',
messages: [
{ role: 'system', content: 'You are the DM.' },
{ role: 'user', content: 'I look around.' },
],
stream: false,
options: { temperature: 0.75, num_ctx: 131072 },
});
});
it('returns just the narrative when there is no tool call block', async () => {
mockChat.mockResolvedValueOnce({ message: { content: 'A quiet moment.' }, eval_count: 7 });
const result = await callLLM([{ role: 'user', content: '...', timestamp: 1 }]);
expect(result.narrative).toBe('A quiet moment.');
expect(result.toolCall).toBeUndefined();
expect(result.rawTokensUsed).toBe(7);
});
it('propagates errors from the ollama client', async () => {
mockChat.mockRejectedValueOnce(new Error('connection refused'));
await expect(
callLLM([{ role: 'user', content: 'hi', timestamp: 1 }]),
).rejects.toThrow('connection refused');
});
it('handles an empty message content without crashing', async () => {
mockChat.mockResolvedValueOnce({ message: { content: '' }, eval_count: 0 });
const result = await callLLM([{ role: 'user', content: '...', timestamp: 1 }]);
expect(result.narrative).toBe('');
expect(result.toolCall).toBeUndefined();
expect(result.rawTokensUsed).toBe(0);
});
it('handles a missing eval_count without crashing', async () => {
mockChat.mockResolvedValueOnce({ message: { content: 'ok' } });
const result = await callLLM([{ role: 'user', content: '...', timestamp: 1 }]);
expect(result.narrative).toBe('ok');
expect(result.rawTokensUsed).toBeUndefined();
});
});

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import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { mkdtempSync, writeFileSync, rmSync } from 'fs';
import { tmpdir } from 'os';
import { join } from 'path';
import { loadPersona, clearPersonaCache } from '../../src/persona/loader.js';
let tmpDir: string;
beforeEach(() => {
clearPersonaCache();
tmpDir = mkdtempSync(join(tmpdir(), 'persona-test-'));
});
afterEach(() => {
rmSync(tmpDir, { recursive: true, force: true });
});
function writePersona(yaml: string): string {
const path = join(tmpDir, 'persona.yaml');
writeFileSync(path, yaml, 'utf8');
return path;
}
describe('loadPersona', () => {
it('loads a valid persona YAML file and parses it', () => {
const path = writePersona(`
name: "Zalram Cloudwalker"
description: "Aasimar Divination Wizard, level 8"
persona: |
You are Zalram — bound to the digital realm.
responseStyle: "Dry, formal, occasionally sardonic."
`);
const persona = loadPersona(path);
expect(persona.name).toBe('Zalram Cloudwalker');
expect(persona.description).toBe('Aasimar Divination Wizard, level 8');
expect(persona.persona).toContain('You are Zalram');
expect(persona.responseStyle).toBe('Dry, formal, occasionally sardonic.');
});
it('caches the result — second call returns the same instance without re-reading the file', () => {
const path = writePersona(`
name: "Test"
description: "A test persona"
persona: "Persona text"
responseStyle: "Style text"
`);
const first = loadPersona(path);
// Replace the file with something invalid. The cached result must still come back.
writeFileSync(path, 'this is not valid YAML: [', 'utf8');
const second = loadPersona(path);
expect(second).toBe(first);
});
it('clears the cache when clearPersonaCache is called', () => {
const path1 = writePersona(`
name: "First"
description: "d"
persona: "p"
responseStyle: "r"
`);
const first = loadPersona(path1);
// Mutate the file to something different, then clear + reload.
writeFileSync(path1, `
name: "Second"
description: "d"
persona: "p"
responseStyle: "r"
`, 'utf8');
clearPersonaCache();
const second = loadPersona(path1);
expect(second.name).toBe('Second');
expect(second).not.toBe(first);
});
it('uses ./persona.yaml as the default path when none is provided', () => {
// This test would require a real ./persona.yaml to exist. Verify the
// default-path behaviour indirectly by ensuring the function uses the
// passed-in path even when it differs from the default.
const path = writePersona(`
name: "DefaultTest"
description: "d"
persona: "p"
responseStyle: "r"
`);
const persona = loadPersona(path);
expect(persona.name).toBe('DefaultTest');
});
it('throws a Zod validation error when a required field is missing', () => {
const path = writePersona(`
name: "Missing fields"
# description, persona, responseStyle all absent
`);
expect(() => loadPersona(path)).toThrow();
});
it('throws a Zod validation error when a field has the wrong type', () => {
const path = writePersona(`
name: 123
description: "d"
persona: "p"
responseStyle: "r"
`);
expect(() => loadPersona(path)).toThrow();
});
it('throws when the file does not exist', () => {
expect(() => loadPersona(join(tmpDir, 'does-not-exist.yaml'))).toThrow();
});
});

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import { vi, describe, it, expect, beforeEach } from 'vitest';
// ── capture the registered error listener so we can fire it ──────────────────
const { errorListeners } = vi.hoisted(() => ({
errorListeners: [] as Array<(err: Error) => void>,
}));
vi.mock('../../src/config.js', () => ({
config: { REDIS_URL: 'redis://localhost:6379' },
}));
vi.mock('ioredis', () => {
return {
Redis: vi.fn().mockImplementation(() => ({
on: vi.fn((event: string, listener: (err: Error) => void) => {
if (event === 'error') errorListeners.push(listener);
return undefined;
}),
})),
};
});
import { Redis } from 'ioredis';
const consoleErrorSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
beforeEach(() => {
errorListeners.length = 0;
consoleErrorSpy.mockClear();
// Force a re-import of redis.ts to register a fresh error listener.
vi.resetModules();
});
describe('db/redis.ts error handler', () => {
it('registers an error listener on the Redis client at module load', async () => {
await import('../../src/db/redis.js');
expect(errorListeners).toHaveLength(1);
});
it('logs the error to console.error when the Redis client emits "error"', async () => {
await import('../../src/db/redis.js');
expect(errorListeners).toHaveLength(1);
errorListeners[0](new Error('ECONNREFUSED 127.0.0.1:6379'));
expect(consoleErrorSpy).toHaveBeenCalledTimes(1);
expect(consoleErrorSpy).toHaveBeenCalledWith(
'[redis] connection error',
expect.objectContaining({ message: 'ECONNREFUSED 127.0.0.1:6379' }),
);
});
it('does not throw or crash when the error has a non-standard shape', async () => {
await import('../../src/db/redis.js');
// Some ioredis errors come wrapped or with extra props. The handler just
// forwards to console.error; it must not throw.
expect(() => {
const err = Object.assign(new Error('boom'), { code: 'ECONNRESET', syscall: 'connect' });
errorListeners[0](err);
}).not.toThrow();
expect(consoleErrorSpy).toHaveBeenCalledWith('[redis] connection error', expect.anything());
});
it('constructs the Redis client with lazyConnect and maxRetriesPerRequest: 3', async () => {
await import('../../src/db/redis.js');
expect(Redis).toHaveBeenCalledWith('redis://localhost:6379', {
lazyConnect: true,
maxRetriesPerRequest: 3,
});
});
});

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import { vi, describe, it, expect, beforeEach } from 'vitest';
const { mockGet: mockCharacterGet } = vi.hoisted(() => ({
mockGet: vi.fn(),
}));
vi.mock('../../src/session/characterRegistry.js', () => ({
characterRegistry: { get: mockCharacterGet },
}));
const { mockModifyExperience } = vi.hoisted(() => ({
mockModifyExperience: vi.fn(),
}));
vi.mock('../../src/vtt/foundryClient.js', () => ({
modifyExperience: mockModifyExperience,
}));
vi.mock('../../src/lib/logger.js', () => ({
log: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
}));
import { awardXP } from '../../src/session/xpAwarder.js';
import { mockSession } from '../fixtures/spec.js';
function makeThread() {
return { send: vi.fn().mockResolvedValue({ id: 'msg-1' }) };
}
const baseSession = {
...mockSession,
players: {
'user-1': { discordId: 'user-1', dndName: 'Aelindra' },
'user-2': { discordId: 'user-2', dndName: 'Borgrim' },
'user-3': { discordId: 'user-3', dndName: 'Cael' },
},
};
beforeEach(() => {
vi.clearAllMocks();
mockModifyExperience.mockResolvedValue(undefined);
});
describe('awardXP', () => {
it('awards XP to every player with a Foundry link and returns the awarded list', async () => {
mockCharacterGet.mockImplementation(async (_g, discordId) => {
if (discordId === 'user-1') return { discordId, dndName: 'Aelindra', source: 'foundry', foundryActorUuid: 'Actor.1' };
if (discordId === 'user-2') return { discordId, dndName: 'Borgrim', source: 'foundry', foundryActorUuid: 'Actor.2' };
return null;
});
const result = await awardXP(baseSession, 100, makeThread() as any);
expect(result.awarded).toEqual([
{ dndName: 'Aelindra', amount: 100 },
{ dndName: 'Borgrim', amount: 100 },
]);
expect(result.skipped).toEqual([
{ dndName: 'Cael', discordId: 'user-3', reason: 'no Foundry character linked' },
]);
expect(mockModifyExperience).toHaveBeenCalledTimes(2);
expect(mockModifyExperience).toHaveBeenCalledWith('Actor.1', 100);
expect(mockModifyExperience).toHaveBeenCalledWith('Actor.2', 100);
});
it('posts a summary embed listing awarded and skipped players', async () => {
mockCharacterGet.mockImplementation(async (_g, discordId) => {
if (discordId === 'user-1') return { discordId, dndName: 'Aelindra', source: 'foundry', foundryActorUuid: 'Actor.1' };
return null;
});
const thread = makeThread();
await awardXP(baseSession, 50, thread as any);
expect(thread.send).toHaveBeenCalledTimes(1);
const message = thread.send.mock.calls[0][0] as string;
expect(message).toContain('+50 XP awarded');
expect(message).toContain('✅ Aelindra');
expect(message).toContain('⚠️');
expect(message).toContain('Borgrim');
expect(message).toContain('Cael');
});
it('returns empty results and posts no embed when there are no players', async () => {
const session = { ...baseSession, players: {} };
const thread = makeThread();
const result = await awardXP(session, 100, thread as any);
expect(result).toEqual({ awarded: [], skipped: [] });
expect(thread.send).not.toHaveBeenCalled();
expect(mockModifyExperience).not.toHaveBeenCalled();
});
it('skips players whose profile has no foundryActorUuid (custom characters)', async () => {
mockCharacterGet.mockResolvedValue({
discordId: 'user-1', dndName: 'Aelindra', source: 'custom', /* no UUID */
});
const result = await awardXP(baseSession, 25, makeThread() as any);
expect(result.awarded).toEqual([]);
expect(result.skipped).toEqual([
{ dndName: 'Aelindra', discordId: 'user-1', reason: 'no Foundry character linked' },
{ dndName: 'Borgrim', discordId: 'user-2', reason: 'no Foundry character linked' },
{ dndName: 'Cael', discordId: 'user-3', reason: 'no Foundry character linked' },
]);
expect(mockModifyExperience).not.toHaveBeenCalled();
});
it('skips players with "registry error" reason when characterRegistry throws', async () => {
mockCharacterGet.mockRejectedValue(new Error('redis down'));
const result = await awardXP(baseSession, 50, makeThread() as any);
expect(result.awarded).toEqual([]);
expect(result.skipped).toEqual([
{ dndName: 'Aelindra', discordId: 'user-1', reason: 'registry error' },
{ dndName: 'Borgrim', discordId: 'user-2', reason: 'registry error' },
{ dndName: 'Cael', discordId: 'user-3', reason: 'registry error' },
]);
expect(mockModifyExperience).not.toHaveBeenCalled();
});
it('skips with "Foundry relay error" when modifyExperience throws for a specific player', async () => {
mockCharacterGet.mockImplementation(async (_g, discordId) => {
if (discordId === 'user-1') return { discordId, dndName: 'Aelindra', source: 'foundry', foundryActorUuid: 'Actor.1' };
if (discordId === 'user-2') return { discordId, dndName: 'Borgrim', source: 'foundry', foundryActorUuid: 'Actor.2' };
return null;
});
mockModifyExperience.mockImplementation(async (uuid) => {
if (uuid === 'Actor.2') throw new Error('relay down');
});
const result = await awardXP(baseSession, 100, makeThread() as any);
expect(result.awarded).toEqual([{ dndName: 'Aelindra', amount: 100 }]);
expect(result.skipped).toEqual(
expect.arrayContaining([
expect.objectContaining({ dndName: 'Borgrim', reason: 'Foundry relay error' }),
]),
);
});
it('handles a mix of: no profile, no UUID, and one success', async () => {
mockCharacterGet.mockImplementation(async (_g, discordId) => {
if (discordId === 'user-1') return null; // no profile
if (discordId === 'user-2') return { source: 'custom' }; // no UUID
if (discordId === 'user-3') return { source: 'foundry', foundryActorUuid: 'Actor.3' }; // success
});
const result = await awardXP(baseSession, 25, makeThread() as any);
expect(result.awarded).toEqual([{ dndName: 'Cael', amount: 25 }]);
expect(result.skipped).toEqual(
expect.arrayContaining([
expect.objectContaining({ dndName: 'Aelindra', reason: 'no Foundry character linked' }),
expect.objectContaining({ dndName: 'Borgrim', reason: 'no Foundry character linked' }),
]),
);
});
});