services:
  db:
    image: postgres:17
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: ${POSTGRES_DB}
    volumes:
      - postgres-data:/var/lib/postgresql/data
    ports:
      - "5432:5432"
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d ${POSTGRES_DB}"]
      interval: 5s
      timeout: 5s
      retries: 5

  web:
    build: ./web
    restart: unless-stopped
    environment:
      DATABASE_URL: ${DATABASE_URL}
      LYRA_SECRET_KEY: ${LYRA_SECRET_KEY}
      # Optional shared-password gate for the whole UI/API. Unset ⇒ app is open. See README.
      LYRA_PASSWORD: ${LYRA_PASSWORD:-}
      # Next's standalone server binds to HOSTNAME; default is the container hostname (its own
      # IP only), so loopback healthchecks can't reach it. Bind all interfaces instead.
      HOSTNAME: 0.0.0.0
    ports:
      # host:container — host 8770 avoids the Quill app on 3000 (and Lidarr on 8686)
      - "8770:3000"
    healthcheck:
      # unauthenticated liveness endpoint; node 22 has global fetch (no curl/wget in the image)
      test: ["CMD-SHELL", "node -e \"fetch('http://127.0.0.1:3000/api/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))\""]
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 20s
    depends_on:
      db:
        condition: service_healthy

  worker:
    build: ./worker
    restart: unless-stopped
    environment:
      DATABASE_URL: ${DATABASE_URL}
      LYRA_SECRET_KEY: ${LYRA_SECRET_KEY}
      STAGING_ROOT: /staging
      SLSKD_DOWNLOADS_ROOT: /slskd-downloads
    # Qobuz's CDN also resolves to IPv6, but the container has no IPv6 route
    # ("Network is unreachable"); disable IPv6 so downloads use IPv4 only.
    sysctls:
      - net.ipv6.conf.all.disable_ipv6=1
    volumes:
      - ${MUSIC_DIR:-./music}:/music
      # Per-job download staging on its own volume. Defaults to MUSIC_DIR/.staging (prior
      # behavior); set STAGING_DIR to a fast local path when MUSIC_DIR is a network share.
      - ${STAGING_DIR:-${MUSIC_DIR:-./music}/.staging}:/staging
      # slskd (an EXTERNAL daemon, not in this compose stack) writes finished Soulseek
      # downloads into its own directory; the worker moves them out of here into staging.
      # Point SLSKD_DOWNLOADS_DIR at slskd's downloads dir on the host (must be the SAME
      # path slskd writes to — set it once Lyra runs on the slskd host). Defaults to an
      # empty local dir so the mount is always valid; Soulseek delivery only works once
      # this points at the real slskd downloads directory.
      - ${SLSKD_DOWNLOADS_DIR:-./slskd-downloads}:/slskd-downloads
    healthcheck:
      # the worker touches /tmp/worker.alive every ~15s from a background thread (survives long
      # downloads); unhealthy if it hasn't been touched in 90s (process wedged/exited).
      test: ["CMD-SHELL", "test $(( $(date +%s) - $(stat -c %Y /tmp/worker.alive 2>/dev/null || echo 0) )) -lt 90"]
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 20s
    depends_on:
      db:
        condition: service_healthy

  # Scheduled Postgres backups. ALL durable state (library, monitored/wanted lists,
  # discovery data, config, AND the encrypted credentials) lives in the single
  # postgres-data volume — one volume loss = total loss. This sidecar pg_dumps on an
  # interval (immediately on start, then every BACKUP_INTERVAL_SECONDS), keeping the
  # last BACKUP_KEEP dumps in ${BACKUP_DIR:-./backups}. Restore steps: see README.
  # For off-box safety, point BACKUP_DIR at a synced/NAS path or rsync ./backups away.
  db-backup:
    image: postgres:17
    restart: unless-stopped
    environment:
      PGHOST: db
      PGUSER: ${POSTGRES_USER}
      PGPASSWORD: ${POSTGRES_PASSWORD}
      PGDATABASE: ${POSTGRES_DB}
      BACKUP_INTERVAL_SECONDS: ${BACKUP_INTERVAL_SECONDS:-86400}
      BACKUP_KEEP: ${BACKUP_KEEP:-7}
    volumes:
      - ${BACKUP_DIR:-./backups}:/backups
    depends_on:
      db:
        condition: service_healthy
    entrypoint: ["/bin/sh", "-c"]
    command:
      - |
        echo "db-backup: starting (interval=$${BACKUP_INTERVAL_SECONDS}s keep=$${BACKUP_KEEP})"
        while true; do
          ts=$$(date +%Y%m%d-%H%M%S)
          out="/backups/lyra-$${ts}.dump"
          if pg_dump -Fc -f "$${out}.tmp" 2>/tmp/err; then
            mv "$${out}.tmp" "$${out}"
            echo "db-backup: wrote $${out} ($$(du -h "$${out}" | cut -f1))"
          else
            echo "db-backup: pg_dump FAILED: $$(cat /tmp/err)"; rm -f "$${out}.tmp"
          fi
          ls -1t /backups/lyra-*.dump 2>/dev/null | tail -n +$$(( $${BACKUP_KEEP} + 1 )) | xargs -r rm -f
          sleep "$${BACKUP_INTERVAL_SECONDS}"
        done

volumes:
  postgres-data: