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iptvnator-sqlite-db-worker

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Repository-specific guidance for Electron non-EPG SQLite worker boundaries, request-scoped DB progress events, and validation for slow DB operations.

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Source SKILL.md: https://github.com/4gray/iptvnator/blob/HEAD/.codex/skills/iptvnator-sqlite-db-worker/SKILL.md

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IPTVnator SQLite DB Worker

Use this skill when changing Electron SQLite operations, worker-backed database flows, DB progress events, or Xtream/playlist import/search/delete persistence.

Ownership

  • Runtime worker client: apps/electron-backend/src/app/services/database-worker-client.ts
  • Worker protocol: apps/electron-backend/src/app/workers/database-worker.types.ts
  • Worker dispatcher: apps/electron-backend/src/app/workers/database.worker.ts
  • SQL operation modules: apps/electron-backend/src/app/database/operations/
  • Shared schema/path helpers: libs/shared/database/src/
  • Architecture doc: docs/architecture/sqlite-db-worker.md

Rules

  • Keep heavy non-EPG SQLite work off the Electron main thread.
  • Keep SQL-heavy logic in operation modules; keep the worker entrypoint as dispatcher/orchestration.
  • Emit request-scoped DB_OPERATION_EVENT progress for long-running operations.
  • Preserve cancellation as cooperative and chunk-based.
  • Do not break existing preload API method names without a coordinated renderer migration.

Validation

  • Run pnpm nx test electron-backend for worker/client/operation changes.
  • Run targeted Electron E2E for import, search, delete, backup/restore, or downloads flows when touched.
  • Use IPTVNATOR_TRACE_DB=1 or IPTVNATOR_TRACE_SQL=1 for manual debugging.