version: '3.8'

services:
  # Grafana - Simple Web UI for viewing logs
  grafana:
    image: grafana/grafana:latest
    container_name: ${CONTAINER_NAME}_grafana
    environment:
      - GF_SECURITY_ADMIN_USER=${AUTH_USERNAME:-admin}
      - GF_SECURITY_ADMIN_PASSWORD=${AUTH_PASSWORD:-admin}
      - GF_AUTH_ANONYMOUS_ENABLED=${AUTH_USERNAME:+false}
      - GF_AUTH_ANONYMOUS_ORG_ROLE=Viewer
      - GF_INSTALL_PLUGINS=
    volumes:
      - grafana_data:/var/lib/grafana
      - ${CONFIG_PATH}/grafana-datasources.yml:/etc/grafana/provisioning/datasources/datasources.yaml:ro
      - ${CONFIG_PATH}/grafana-dashboard.yml:/etc/grafana/provisioning/dashboards/dashboard.yaml:ro
      - ${CONFIG_PATH}/dashboards:/var/lib/grafana/dashboards:ro
    ports:
      - "${WEB_PORT:-3000}:3000"
    restart: unless-stopped
    depends_on:
      - loki

  # Loki - Lightweight log storage (100x simpler than Elasticsearch)
  loki:
    image: grafana/loki:2.9.0
    container_name: ${CONTAINER_NAME}_loki
    volumes:
      - loki_data:/loki
      - ${CONFIG_PATH}/loki.yaml:/etc/loki/local-config.yaml:ro
    ports:
      - "3100:3100"
    command: -config.file=/etc/loki/local-config.yaml
    restart: unless-stopped

  # Promtail - Collects all logs (Docker + System)
  promtail:
    image: grafana/promtail:2.9.0
    container_name: ${CONTAINER_NAME}_promtail
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - /var/log:/var/log:ro
      - ${CONFIG_PATH}/promtail.yaml:/etc/promtail/config.yml:ro
      - promtail_positions:/tmp/positions
    command: -config.file=/etc/promtail/config.yml
    restart: unless-stopped
    depends_on:
      - loki

volumes:
  grafana_data:
  loki_data:
  promtail_positions: