# ============================================
# DPB Docker Compose 配置文件
# ============================================
# 使用方式:
#   开发环境: docker compose --env-file .env up -d
#   生产环境: docker compose --env-file .env -f docker-compose.yaml up -d
# ============================================

services:
  # ==================== 数据库服务（PostgreSQL 16） ====================
  postgres:
    container_name: postgres
    image: postgres:16
    restart: unless-stopped
    platform: linux/amd64
    environment:
      TZ: "Asia/Shanghai"
      POSTGRES_DB: "${DATABASE_NAME:-dpb}"
      POSTGRES_USER: "${DATABASE_USER:-dpb}"
      POSTGRES_PASSWORD: "${DATABASE_PASSWORD:?错误: 请设置 DATABASE_PASSWORD 环境变量}"
    # 仅绑定本机回环：数据库不应暴露到公网/局域网，只允许后端容器与运维本机访问
    ports:
      - "127.0.0.1:${DATABASE_PORT:-5432}:5432"
    volumes:
      - pg_data:/var/lib/postgresql/data
      - /etc/localtime:/etc/localtime:ro
    networks:
      - app_network
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${DATABASE_USER:-dpb}"]
      interval: 10s
      timeout: 10s
      retries: 10
      start_period: 30s
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
    deploy:
      resources:
        limits:
          memory: 1g
        reservations:
          memory: 256m

  # ==================== Redis 服务 ====================
  redis:
    container_name: redis
    image: redis:7-alpine
    restart: unless-stopped
    platform: linux/amd64
    environment:
      TZ: "Asia/Shanghai"
    # 仅绑定本机回环：Redis 不应暴露到公网/局域网
    ports:
      - "127.0.0.1:${REDIS_PORT:-6379}:6379"
    volumes:
      - redis_data:/data
      # 挂载自定义 redis.conf（若存在则覆盖默认配置）
      - ./redis/conf/redis.conf:/usr/local/etc/redis/redis.conf:ro
    command: >
      redis-server /usr/local/etc/redis/redis.conf
      --requirepass ${REDIS_PASSWORD:?错误: 请设置 REDIS_PASSWORD 环境变量}
    networks:
      - app_network
    healthcheck:
      test:
        ["CMD", "redis-cli", "-a", "${REDIS_PASSWORD}", "ping"]
      interval: 10s
      timeout: 5s
      retries: 5
      start_period: 10s
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
    deploy:
      resources:
        limits:
          memory: 512m
        reservations:
          memory: 128m

  # ==================== 后端服务 ====================
  backend:
    container_name: backend
    build:
      context: ../
      dockerfile: ./docker/backend/Dockerfile
      args:
        DEPLOY_ENV: "${DEPLOY_ENV:-prod}"
    image: "backend:${BACKEND_IMAGE_TAG:-3.0.0}"
    restart: unless-stopped
    platform: linux/amd64
    # 以非 root 运行（与 Dockerfile USER app 一致），降权容器内进程
    user: "1001:1001"
    # 纵深防御：禁止提权、丢弃全部 capabilities（uvicorn 绑 8001 端口无需特权）
    security_opt:
      - no-new-privileges:true
    cap_drop:
      - ALL
    tmpfs:
      - /tmp
    environment:
      TZ: "Asia/Shanghai"
      # 运行环境，对应 backend/env/.env.{dev,prod}
      ENVIRONMENT: "${DEPLOY_ENV:-prod}"
      # PostgreSQL 连接配置（对应 backend/env/.env.prod 的 DATABASE_*）
      DATABASE_TYPE: "postgres"
      DATABASE_HOST: "postgres"
      DATABASE_PORT: "5432"
      DATABASE_USER: "${DATABASE_USER:-dpb}"
      DATABASE_PASSWORD: "${DATABASE_PASSWORD:?错误: 请设置 DATABASE_PASSWORD 环境变量}"
      DATABASE_NAME: "${DATABASE_NAME:-dpb}"
      # Redis 连接配置
      REDIS_HOST: "redis"
      REDIS_PORT: "6379"
      REDIS_PASSWORD: "${REDIS_PASSWORD}"
      REDIS_DB_NAME: "1"
      REDIS_ENABLE: "true"
      # JWT 签名密钥：必须通过 docker/.env 配置独立随机值（settings 会在 prod 下拒绝默认密钥）
      SECRET_KEY: "${SECRET_KEY:?错误: 请设置 SECRET_KEY 环境变量（生产 JWT 密钥，勿用默认值）}"
      # ── 应用层配置：镜像已排除 backend/env，以下全部由 docker/.env 注入（勿再依赖 .env.prod）──
      # CORS 白名单：生产必须配置具体域名，为空时后端 prod 校验将拒绝启动
      PROD_CORS_ORIGINS: "${PROD_CORS_ORIGINS:-}"
      # Host 头白名单（nginx 反代时后端据此校验 Host，必须配置真实域名，否则请求 403）
      ALLOWED_HOSTS: "${ALLOWED_HOSTS:?错误: 请设置 ALLOWED_HOSTS（如 [\"admin.example.com\",\"*.example.com\"]）}"
      # 是否信任 nginx 透传的客户端 IP 头（经可信代理时必须 true）
      IP_TRUST_PROXY_HEADERS: "${IP_TRUST_PROXY_HEADERS:-true}"
      # 登录暴力破解防护
      LOGIN_MAX_FAILURES: "${LOGIN_MAX_FAILURES:-5}"
      LOGIN_FAILURE_WINDOW_SECONDS: "${LOGIN_FAILURE_WINDOW_SECONDS:-900}"
      LOGIN_LOCKOUT_SECONDS: "${LOGIN_LOCKOUT_SECONDS:-900}"
      # 登录验证码 / 演示模式 / 开发默认密码（生产必须保持为空）
      CAPTCHA_ENABLE: "${CAPTCHA_ENABLE:-true}"
      DEMO_ENABLE: "${DEMO_ENABLE:-false}"
      DEV_DEFAULT_PASSWORD: "${DEV_DEFAULT_PASSWORD:-}"
      # SMTP 邮件
      SMTP_HOST: "${SMTP_HOST:-}"
      SMTP_PORT: "${SMTP_PORT:-465}"
      SMTP_USER: "${SMTP_USER:-}"
      SMTP_PASSWORD: "${SMTP_PASSWORD:-}"
      SMTP_FROM: "${SMTP_FROM:-}"
      SMTP_FROM_NAME: "${SMTP_FROM_NAME:-客户服务}"
      SMTP_TLS: "${SMTP_TLS:-true}"
      EMAIL_CODE_EXPIRE_SECONDS: "${EMAIL_CODE_EXPIRE_SECONDS:-300}"
      # 大模型
      OPENAI_BASE_URL: "${OPENAI_BASE_URL:-https://api.deepseek.com}"
      OPENAI_API_KEY: "${OPENAI_API_KEY:-}"
      OPENAI_MODEL: "${OPENAI_MODEL:-deepseek-chat}"
      # 日志级别
      LOGGER_LEVEL: "${LOGGER_LEVEL:-INFO}"
      # 非 root 容器下禁止写 __pycache__（/home 已 chown 可写，此处避免 import 时缓存字节码）
      PYTHONDONTWRITEBYTECODE: "1"
    # 仅绑定本机回环：后端只经 nginx 对外，避免 8001 直连暴露（否则可绕过 Host 头/CORS/HTTPS 约束）
    ports:
      - "127.0.0.1:${BACKEND_PORT:-8001}:8001"
    # volumes:
    #   ── 注意 ──────────────────────────────────
    #   生产环境禁用代码挂载：镜像已自包含（见 Dockerfile COPY ./backend/）。
    #   仅本地开发需要热更新时取消注释下面这行（宿主机代码覆盖容器内代码）。
    #   ─────────────────────────────────────────
    #   - ../backend:/home
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - app_network
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "python -c 'import urllib.request; urllib.request.urlopen(\"http://localhost:8001/common/health/check\")' || exit 1",
        ]
      interval: 15s
      timeout: 10s
      retries: 5
      start_period: 40s
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
    deploy:
      resources:
        limits:
          memory: 1g
          cpus: "1.0"
        reservations:
          memory: 256m

  # ==================== Nginx 服务 ====================
  nginx:
    container_name: nginx
    image: nginx:1.25-alpine
    restart: unless-stopped
    platform: linux/amd64
    environment:
      TZ: "Asia/Shanghai"
    ports:
      - "${HTTP_PORT:-80}:80"
      - "${HTTPS_PORT:-443}:443"
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
      - ./nginx/web:/usr/share/nginx/html/web:ro
      - ./nginx/ssl:/etc/nginx/ssl:ro
      # 按需启用（取消注释）：
      - ./nginx/app:/usr/share/nginx/html/app:ro
      - ./nginx/docs:/usr/share/nginx/html/docs:ro
    depends_on:
      backend:
        condition: service_started
    networks:
      - app_network
    healthcheck:
      test: ["CMD", "nginx", "-t"]
      interval: 30s
      timeout: 5s
      retries: 3
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
    deploy:
      resources:
        limits:
          memory: 256m
          cpus: "0.5"
        reservations:
          memory: 64m

# ==================== 持久化卷 ====================
volumes:
  pg_data:
    driver: local
    driver_opts:
      type: none
      device: ./postgres/data
      o: bind
  redis_data:
    driver: local
    driver_opts:
      type: none
      device: ./redis/data
      o: bind

# ==================== 网络 ====================
networks:
  app_network:
    driver: bridge