# =============================================================================
# tOS Production Docker Compose
# =============================================================================
# Vollstaendiger Produktions-Stack mit optionalem SSL via Caddy.
#
# Ohne SSL (externer Reverse Proxy):
#   docker compose -f docker-compose.prod.yml up -d
#
# Mit Let's Encrypt SSL (Caddy):
#   docker compose -f docker-compose.prod.yml --profile ssl up -d
#
# Voraussetzungen:
#   - docker/.env mit allen Secrets (erstellt durch install.sh)
#   - Docker Images gebaut (api + web)
# =============================================================================

name: tos-prod

services:
  # ---------------------------------------------------------------------------
  # PostgreSQL Database
  # ---------------------------------------------------------------------------
  postgres:
    image: postgres:16-alpine
    container_name: tos-postgres
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-tos_user}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: ${POSTGRES_DB:-tos_db}
      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --locale=C"
    volumes:
      - postgres_data:/var/lib/postgresql/data
      - ./postgres/init.sql:/docker-entrypoint-initdb.d/init.sql:ro
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-tos_user} -d ${POSTGRES_DB:-tos_db}"]
      interval: 10s
      timeout: 5s
      retries: 5
      start_period: 10s
    networks:
      - tos-network

  # ---------------------------------------------------------------------------
  # Redis Cache & Queue
  # ---------------------------------------------------------------------------
  redis:
    image: redis:7-alpine
    container_name: tos-redis
    restart: unless-stopped
    command: >
      redis-server
      --appendonly yes
      --maxmemory 256mb
      --maxmemory-policy allkeys-lru
    volumes:
      - redis_data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - tos-network

  # ---------------------------------------------------------------------------
  # Keycloak Identity & Access Management (Production Mode)
  # ---------------------------------------------------------------------------
  keycloak:
    image: quay.io/keycloak/keycloak:24.0
    container_name: tos-keycloak
    restart: unless-stopped
    # "start" statt "start-dev" fuer Production (aktiviert Caching, deaktiviert Dev-Features)
    command:
      - start
      - --import-realm
    environment:
      KEYCLOAK_ADMIN: ${KEYCLOAK_ADMIN:-admin}
      KEYCLOAK_ADMIN_PASSWORD: ${KEYCLOAK_ADMIN_PASSWORD}
      KC_DB: postgres
      KC_DB_URL: jdbc:postgresql://postgres:5432/${POSTGRES_DB:-tos_db}
      KC_DB_USERNAME: ${POSTGRES_USER:-tos_user}
      KC_DB_PASSWORD: ${POSTGRES_PASSWORD}
      # Hostname-Konfiguration fuer Production hinter Reverse Proxy
      KC_HOSTNAME: auth.${APP_DOMAIN}
      KC_HOSTNAME_STRICT: "true"
      KC_HOSTNAME_STRICT_HTTPS: "true"
      KC_HTTP_ENABLED: "true"
      KC_HEALTH_ENABLED: "true"
      KC_PROXY: edge
    volumes:
      - ./keycloak/realm-export.json:/opt/keycloak/data/import/realm-export.json:ro
    healthcheck:
      # Keycloak 24+ (UBI9) hat kein curl - nutze bash TCP redirect
      test: >
        bash -c 'exec 3<>/dev/tcp/localhost/8080 &&
        echo -e "GET /health/ready HTTP/1.1\r\nHost: localhost\r\nConnection: close\r\n\r\n" >&3 &&
        timeout 2 cat <&3 | grep -q "200 OK"'
      interval: 30s
      timeout: 15s
      retries: 5
      start_period: 120s
    depends_on:
      postgres:
        condition: service_healthy
    networks:
      - tos-network

  # ---------------------------------------------------------------------------
  # tOS API (NestJS Backend)
  # ---------------------------------------------------------------------------
  api:
    build:
      context: ..
      dockerfile: apps/api/Dockerfile
    container_name: tos-api
    restart: unless-stopped
    environment:
      NODE_ENV: production
      PORT: "3001"
      API_PREFIX: api
      DATABASE_URL: postgresql://${POSTGRES_USER:-tos_user}:${POSTGRES_PASSWORD}@postgres:5432/tos_app
      JWT_SECRET: ${JWT_SECRET}
      ENCRYPTION_KEY: ${ENCRYPTION_KEY}
      KEYCLOAK_URL: http://keycloak:8080
      KEYCLOAK_REALM: ${KEYCLOAK_REALM:-tOS}
      KEYCLOAK_CLIENT_ID: ${KEYCLOAK_CLIENT_ID:-tos-backend}
      KEYCLOAK_CLIENT_SECRET: ${KEYCLOAK_CLIENT_SECRET:-}
      KEYCLOAK_ADMIN_PASSWORD: ${KEYCLOAK_ADMIN_PASSWORD}
      REDIS_HOST: redis
      REDIS_PORT: "6379"
      SETUP_TOKEN: ${SETUP_TOKEN}
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
      keycloak:
        condition: service_healthy
    healthcheck:
      test: ["CMD-SHELL", "wget -qO- http://localhost:3001/api/v1/health/liveness || exit 1"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 60s
    networks:
      - tos-network

  # ---------------------------------------------------------------------------
  # tOS Web Frontend (Next.js)
  # ---------------------------------------------------------------------------
  web:
    build:
      context: ..
      dockerfile: apps/web/Dockerfile
    container_name: tos-web
    restart: unless-stopped
    environment:
      NEXT_PUBLIC_APP_URL: https://${APP_DOMAIN}
      NEXT_PUBLIC_API_URL: https://${APP_DOMAIN}/api/v1
      NEXTAUTH_URL: https://${APP_DOMAIN}
      NEXTAUTH_SECRET: ${NEXTAUTH_SECRET}
      KEYCLOAK_CLIENT_ID: ${NEXTAUTH_KEYCLOAK_CLIENT_ID:-tos-nextauth}
      KEYCLOAK_CLIENT_SECRET: ${NEXTAUTH_KEYCLOAK_CLIENT_SECRET:-}
      # Browser-seitige Redirects: oeffentliche URL
      KEYCLOAK_ISSUER: https://auth.${APP_DOMAIN}/realms/${KEYCLOAK_REALM:-tOS}
    depends_on:
      api:
        condition: service_healthy
    networks:
      - tos-network

  # ---------------------------------------------------------------------------
  # Caddy Reverse Proxy (optional, nur mit --profile ssl)
  # ---------------------------------------------------------------------------
  caddy:
    profiles: ["ssl"]
    image: caddy:2-alpine
    container_name: tos-caddy
    restart: unless-stopped
    ports:
      - "80:80"
      - "443:443"
      - "443:443/udp"
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile:ro
      - caddy_data:/data
      - caddy_config:/config
    environment:
      APP_DOMAIN: ${APP_DOMAIN}
      LETSENCRYPT_EMAIL: ${LETSENCRYPT_EMAIL:-}
    depends_on:
      - web
      - api
      - keycloak
    networks:
      - tos-network

# =============================================================================
# Volumes
# =============================================================================
volumes:
  postgres_data:
    name: tos-postgres-data
  redis_data:
    name: tos-redis-data
  caddy_data:
    name: tos-caddy-data
  caddy_config:
    name: tos-caddy-config

# =============================================================================
# Networks
# =============================================================================
networks:
  tos-network:
    name: tos-network
    driver: bridge