# ===================================================================
# Docker Compose - Client Applications (OPTIMIZED & SECURED)
# Meldestelle Project - Frontend Components
# ===================================================================
# Security & Performance Improvements:
# - Resource limits and reservations for all clients
# - Security hardening (non-root users, no-new-privileges)
# - Optimized build configurations and caching
# - Enhanced health checks and monitoring
# - Production-ready configurations
# ===================================================================
# Usage Scenarios:
#
# 1. STANDALONE CLIENT DEPLOYMENT:
#    docker-compose -f docker-compose.clients.yml.optimized up -d
#    - Clients run independently without api-gateway dependency
#    - Set GATEWAY_HOST environment variable to external API Gateway
#
# 2. MULTI-FILE WITH INFRASTRUCTURE:
#    docker-compose -f docker-compose.yml.optimized -f docker-compose.clients.yml.optimized up -d
#    - Infrastructure services start first, then clients connect
#
# 3. COMPLETE SYSTEM:
#    docker-compose -f docker-compose.yml.optimized -f docker-compose.services.yml.optimized -f docker-compose.clients.yml.optimized up -d
#    - Full stack deployment with all components
# ===================================================================

version: '3.9'

services:
  # ===================================================================
  # Web Application - Kotlin/JS + Nginx with Security Hardening
  # ===================================================================
  web-app:
    build:
      context: .
      dockerfile: dockerfiles/clients/web-app/Dockerfile
      args:
        - BUILD_DATE=${BUILD_DATE:-$(date -u +"%Y-%m-%dT%H:%M:%SZ")}
        - VERSION=${APP_VERSION:-1.0.0}
        - NODE_ENV=${NODE_ENV:-production}
    container_name: meldestelle-web-app
    environment:
      NODE_ENV: ${NODE_ENV:-production}
      APP_TITLE: ${APP_NAME:-Meldestelle}
      APP_VERSION: ${APP_VERSION:-1.0.0}
      # API Gateway Configuration
      API_BASE_URL: http://${GATEWAY_HOST:-api-gateway}:${GATEWAY_PORT:-8081}
      # Nginx Worker Processes (for Performance)
      NGINX_WORKER_PROCESSES: ${NGINX_WORKER_PROCESSES:-auto}
      NGINX_WORKER_CONNECTIONS: ${NGINX_WORKER_CONNECTIONS:-1024}
      # Security Headers
      NGINX_SECURITY_HEADERS: "true"
    ports:
      - "${WEB_APP_PORT:-4000}:4000"
    networks:
      - meldestelle-network
    volumes:
      # Nginx cache directory
      - web-app-cache:/var/cache/nginx
      # Temp directory with proper permissions
      - web-app-tmp:/tmp/nginx
    deploy:
      resources:
        limits:
          cpus: '1.0'
          memory: 512M
        reservations:
          cpus: '0.25'
          memory: 128M
    healthcheck:
      test: ["CMD", "curl", "--fail", "--max-time", "5", "http://localhost:4000/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 60s
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    # Run as nginx user (built into nginx image)
    user: "101:101" # nginx:nginx
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.web-app.rule=Host(`${WEB_APP_DOMAIN:-localhost}`) && PathPrefix(`/`)"
      - "traefik.http.services.web-app.loadbalancer.server.port=4000"
      - "traefik.http.routers.web-app.tls=true"

  # ===================================================================
  # Desktop Application - Kotlin Desktop + VNC with Security
  # ===================================================================
  desktop-app:
    build:
      context: .
      dockerfile: dockerfiles/clients/desktop-app/Dockerfile
      args:
        - BUILD_DATE=${BUILD_DATE:-$(date -u +"%Y-%m-%dT%H:%M:%SZ")}
        - VERSION=${APP_VERSION:-1.0.0}
    container_name: meldestelle-desktop-app
    environment:
      # API Configuration - fallback to external gateway if not in same compose network
      API_BASE_URL: http://${GATEWAY_HOST:-api-gateway}:${GATEWAY_PORT:-8081}
      # VNC Configuration with Security
      DISPLAY: ":99"
      VNC_PORT: "5901"
      NOVNC_PORT: "6080"
      VNC_PASSWORD_FILE: /run/secrets/vnc_password
      # App Information
      APP_TITLE: ${APP_NAME:-Meldestelle}
      APP_VERSION: ${APP_VERSION:-1.0.0}
      # JVM Settings for Desktop App
      JAVA_OPTS: "-Xmx1g -Xms256m -XX:+UseG1GC -XX:MaxGCPauseMillis=200"
    ports:
      - "${DESKTOP_VNC_WEB_PORT:-6080}:6080"  # Web-based VNC (noVNC)
      - "${DESKTOP_VNC_PORT:-5901}:5901"      # VNC direct access
    volumes:
      # Desktop app data directory
      - desktop-app-data:/app/data
      # X11 socket for display
      - /tmp/.X11-unix:/tmp/.X11-unix:rw
    networks:
      - meldestelle-network
    secrets:
      - vnc_password
    deploy:
      resources:
        limits:
          cpus: '2.0'
          memory: 2G
        reservations:
          cpus: '0.5'
          memory: 512M
    healthcheck:
      test: ["CMD", "/opt/health-check.sh"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 90s
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.desktop-app.rule=Host(`${DESKTOP_APP_DOMAIN:-localhost}`) && PathPrefix(`/desktop`)"
      - "traefik.http.services.desktop-app.loadbalancer.server.port=6080"
      - "traefik.http.routers.desktop-app.tls=true"
    profiles:
      - desktop

  # ===================================================================
  # Auth Server - Custom Authentication Service (Enhanced Security)
  # ===================================================================
  auth-server:
    build:
      context: .
      dockerfile: dockerfiles/infrastructure/auth-server/Dockerfile
      args:
        # Global build arguments
        GRADLE_VERSION: ${DOCKER_GRADLE_VERSION:-9.0.0}
        JAVA_VERSION: ${DOCKER_JAVA_VERSION:-21}
        BUILD_DATE: ${BUILD_DATE:-unknown}
        VERSION: ${DOCKER_APP_VERSION:-1.0.0}
        # Infrastructure-specific arguments
        SPRING_PROFILES_ACTIVE: ${DOCKER_SPRING_PROFILES_DEFAULT:-default}
    container_name: meldestelle-auth-server
    volumes:
      - auth-server-gradle-cache:/home/gradle/.gradle
    environment:
      SPRING_PROFILES_ACTIVE: ${SPRING_PROFILES_ACTIVE:-docker}
      SERVER_PORT: ${AUTH_SERVICE_PORT:-8087}
      # Keycloak Integration
      KEYCLOAK_SERVER_URL: http://keycloak:8080
      KEYCLOAK_REALM: meldestelle
      KEYCLOAK_CLIENT_ID: meldestelle-auth-service
      KEYCLOAK_CLIENT_SECRET_FILE: /run/secrets/keycloak_auth_client_secret
      # Database connection via secrets
      DB_HOST: postgres
      DB_PORT: 5432
      DB_NAME: ${POSTGRES_DB:-meldestelle}
      DB_USERNAME_FILE: /run/secrets/postgres_user
      DB_PASSWORD_FILE: /run/secrets/postgres_password
      # JWT Configuration via secrets
      JWT_SECRET_FILE: /run/secrets/jwt_secret
      JWT_ISSUER: ${JWT_ISSUER:-meldestelle-auth-server}
      JWT_AUDIENCE: ${JWT_AUDIENCE:-meldestelle-services}
    ports:
      - "${AUTH_SERVICE_PORT:-8087}:8087"
    depends_on:
      postgres:
        condition: service_healthy
      keycloak:
        condition: service_started
    networks:
      - meldestelle-network
    secrets:
      - postgres_user
      - postgres_password
      - jwt_secret
      - keycloak_auth_client_secret
    deploy:
      resources:
        limits:
          cpus: '1.5'
          memory: 1.5G
        reservations:
          cpus: '0.5'
          memory: 512M
    healthcheck:
      test: ["CMD", "curl", "--fail", "--max-time", "10", "http://localhost:8087/actuator/health/readiness"]
      interval: 30s
      timeout: 15s
      retries: 3
      start_period: 90s
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    profiles:
      - auth

  # ===================================================================
  # Monitoring Server - Custom Grafana Extensions (Enhanced Security)
  # ===================================================================
  monitoring-server:
    build:
      context: .
      dockerfile: dockerfiles/infrastructure/monitoring-server/Dockerfile
      args:
        # Global build arguments
        GRADLE_VERSION: ${DOCKER_GRADLE_VERSION:-9.0.0}
        JAVA_VERSION: ${DOCKER_JAVA_VERSION:-21}
        BUILD_DATE: ${BUILD_DATE:-unknown}
        VERSION: ${DOCKER_APP_VERSION:-1.0.0}
        # Infrastructure-specific arguments
        SPRING_PROFILES_ACTIVE: ${DOCKER_SPRING_PROFILES_DEFAULT:-default}
    container_name: meldestelle-monitoring-server
    volumes:
      - monitoring-server-gradle-cache:/home/gradle/.gradle
      - monitoring-data:/app/data
      - ./docker/monitoring:/app/config:ro
    environment:
      SPRING_PROFILES_ACTIVE: ${SPRING_PROFILES_ACTIVE:-docker}
      SERVER_PORT: 8088
      # Monitoring Services URLs
      GRAFANA_URL: http://grafana:3000
      PROMETHEUS_URL: http://prometheus:9090
      # Authentication via secrets
      GRAFANA_ADMIN_USER_FILE: /run/secrets/grafana_admin_user
      GRAFANA_ADMIN_PASSWORD_FILE: /run/secrets/grafana_admin_password
      METRICS_AUTH_USERNAME_FILE: /run/secrets/metrics_auth_username
      METRICS_AUTH_PASSWORD_FILE: /run/secrets/metrics_auth_password
    ports:
      - "${MONITORING_SERVER_PORT:-8088}:8088"
    depends_on:
      grafana:
        condition: service_healthy
      prometheus:
        condition: service_healthy
    networks:
      - meldestelle-network
    secrets:
      - grafana_admin_user
      - grafana_admin_password
      - metrics_auth_username
      - metrics_auth_password
    deploy:
      resources:
        limits:
          cpus: '1.0'
          memory: 1G
        reservations:
          cpus: '0.25'
          memory: 256M
    healthcheck:
      test: ["CMD", "curl", "--fail", "--max-time", "10", "http://localhost:8088/actuator/health/readiness"]
      interval: 30s
      timeout: 15s
      retries: 3
      start_period: 90s
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    profiles:
      - monitoring

# ===================================================================
# Secrets - Client-specific and Shared
# ===================================================================
secrets:
  # Shared secrets (external references to main infrastructure secrets)
  postgres_user:
    external: true
    name: meldestelle_postgres_user
  postgres_password:
    external: true
    name: meldestelle_postgres_password
  grafana_admin_user:
    external: true
    name: meldestelle_grafana_admin_user
  grafana_admin_password:
    external: true
    name: meldestelle_grafana_admin_password

  # Client-specific secrets
  jwt_secret:
    external: true
    name: meldestelle_jwt_secret
  vnc_password:
    file: ./docker/secrets/vnc_password.txt
  keycloak_auth_client_secret:
    file: ./docker/secrets/keycloak_auth_client_secret.txt
  metrics_auth_username:
    file: ./docker/secrets/metrics_auth_username.txt
  metrics_auth_password:
    file: ./docker/secrets/metrics_auth_password.txt

# ===================================================================
# Volumes - Client-specific Data and Caches
# ===================================================================
volumes:
  # Web App volumes
  web-app-cache:
    driver: local
  web-app-tmp:
    driver: local

  # Desktop App volumes
  desktop-app-data:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: ${DATA_PATH:-./data}/desktop-app

  # Build cache volumes
  auth-server-gradle-cache:
    driver: local
  monitoring-server-gradle-cache:
    driver: local

  # Monitoring data (shared with main infrastructure)
  monitoring-data:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: ${DATA_PATH:-./data}/monitoring

# ===================================================================
# Networks - Use external network from main infrastructure
# ===================================================================
networks:
  meldestelle-network:
    external: true
    name: meldestelle_meldestelle-network
