# ─────────────────────────────────────────────────────────────────────────────
# Xpeditis — Centralized Logging Stack
#
# Usage (standalone):
#   docker-compose -f docker-compose.yml -f docker-compose.logging.yml up -d
#
# Usage (full dev environment with logging):
#   docker-compose -f docker-compose.dev.yml -f docker-compose.logging.yml up -d
#
# Exposed ports:
#   - Grafana:      http://localhost:3000   (admin / xpeditis_grafana)
#   - Loki:         http://localhost:3100   (internal use only)
#   - Promtail:     http://localhost:9080   (internal use only)
#   - log-exporter: http://localhost:3200   (export API)
# ─────────────────────────────────────────────────────────────────────────────

services:
  # ─── Loki — Log storage & query engine ────────────────────────────────────
  loki:
    image: grafana/loki:3.0.0
    container_name: xpeditis-loki
    restart: unless-stopped
    ports:
      - '3100:3100'
    volumes:
      - ./infra/logging/loki/loki-config.yml:/etc/loki/local-config.yaml:ro
      - loki_data:/loki
    command: -config.file=/etc/loki/local-config.yaml
    healthcheck:
      test: ['CMD-SHELL', 'wget --quiet --tries=1 --spider http://localhost:3100/ready || exit 1']
      interval: 15s
      timeout: 5s
      retries: 5
    networks:
      - xpeditis-network

  # ─── Promtail — Docker log collector ──────────────────────────────────────
  promtail:
    image: grafana/promtail:3.0.0
    container_name: xpeditis-promtail
    restart: unless-stopped
    ports:
      - '9080:9080'
    volumes:
      - ./infra/logging/promtail/promtail-config.yml:/etc/promtail/config.yml:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
      # Note: /var/lib/docker/containers is not needed with docker_sd_configs (uses Docker API)
    command: -config.file=/etc/promtail/config.yml
    depends_on:
      loki:
        condition: service_healthy
    networks:
      - xpeditis-network

  # ─── Grafana — Visualization ───────────────────────────────────────────────
  grafana:
    image: grafana/grafana:11.0.0
    container_name: xpeditis-grafana
    restart: unless-stopped
    ports:
      - '3030:3000'
    environment:
      GF_SECURITY_ADMIN_USER: admin
      GF_SECURITY_ADMIN_PASSWORD: xpeditis_grafana
      GF_USERS_ALLOW_SIGN_UP: 'false'
      GF_AUTH_ANONYMOUS_ENABLED: 'false'
      GF_SERVER_ROOT_URL: http://localhost:3030
      # Disable telemetry
      GF_ANALYTICS_REPORTING_ENABLED: 'false'
      GF_ANALYTICS_CHECK_FOR_UPDATES: 'false'
    volumes:
      - ./infra/logging/grafana/provisioning:/etc/grafana/provisioning:ro
      - grafana_data:/var/lib/grafana
    depends_on:
      loki:
        condition: service_healthy
    healthcheck:
      test: ['CMD-SHELL', 'wget --quiet --tries=1 --spider http://localhost:3000/api/health || exit 1']
      interval: 15s
      timeout: 5s
      retries: 5
    networks:
      - xpeditis-network

  # ─── log-exporter — REST export API ───────────────────────────────────────
  log-exporter:
    build:
      context: ./apps/log-exporter
      dockerfile: Dockerfile
    container_name: xpeditis-log-exporter
    restart: unless-stopped
    ports:
      - '3200:3200'
    environment:
      PORT: 3200
      LOKI_URL: http://loki:3100
      # Optional: set LOG_EXPORTER_API_KEY to require x-api-key header
      # LOG_EXPORTER_API_KEY: your-secret-key-here
    depends_on:
      loki:
        condition: service_healthy
    networks:
      - xpeditis-network

volumes:
  loki_data:
    driver: local
  grafana_data:
    driver: local

networks:
  xpeditis-network:
    name: xpeditis-network
    # Re-uses the network created by docker-compose.yml / docker-compose.dev.yml.
    # If starting this stack alone, the network is created automatically.