feat(indexer): add REST API endpoints with supertest tests#303
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Implement the ILN indexer REST API covering Issues Invoice-Liquidity-Network#250-Invoice-Liquidity-Network#253: - GET /leaderboard: materialized reputation ranking with limit and token filter - GET /reputation/:address: reputation profile with score history and period filtering - GET /stats: pre-computed protocol metrics with 60s in-memory cache + history endpoint - GET /invoices/:id: full invoice detail with event history and computed fields Database layer uses SQLite (better-sqlite3) with tables for invoices, events, reputation_updates, stats_snapshots, and stats_history. Express REST API with 35 supertest tests across 4 test suites.
feat(indexer): add REST API endpoints with supertest tests
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Levi-Ojukwu
merged commit 72816ba
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Invoice-Liquidity-Network:main
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Summary
Implements the ILN indexer REST API covering Issues #250–#253. Creates the indexer/ package from scratch with a SQLite-backed Express server and 35 supertest tests.
New endpoints
Endpoint Issue Description
GET /leaderboard?limit=50&token=USDC #253 Materialized reputation ranking sorted by score. Respects limit (max 100), optional ?token= filter
GET /reputation/:address?historyPeriod=30d|90d|all #252 Full reputation profile with score history. Returns zero-score for unknown addresses (no 404)
GET /stats #251 Pre-computed protocol metrics (invoice counts, volume by token, dispute rate) with 60s in-memory cache TTL
GET /stats/history?period=30d|90d #251 Time-series daily aggregates for stats history
GET /invoices/:id #250 Full invoice detail with event history, computed fields (effectiveYieldBps, remainingBalance, daysUntilExpiry), 404 for unknown IDs
Architecture
Files added (21)
indexer/
├── package.json, tsconfig.json, jest.config.cjs, .gitignore
├── src/
│ ├── index.ts, app.ts, config.ts
│ ├── database/db.ts, schema.ts
│ ├── services/leaderboardService.ts, statsService.ts
│ └── api/routes/leaderboard.ts, reputation.ts, stats.ts, invoices.ts
└── tests/
├── helpers.ts
├── leaderboard.test.ts, reputation.test.ts, stats.test.ts, invoices.test.ts
closes #250
closes #251
closes #252
closes #253