# docker-compose.yml —— 拼多多自动回复系统多容器编排
# ==============================================================================
# 本文件用途：编排基础设施与各服务容器，按依赖顺序启动并健康自愈。
#   服务清单：mysql / redis / backend / websocket / scheduler / frontend
#
# 关键约束（开发规范 17/21、需求 24.8/25.2/25.4）：
#   1. 全链路北京时间：所有容器 TZ=Asia/Shanghai；MySQL 以
#      --default-time-zone=+08:00 启动，字符集 utf8mb4（需求 24.8）。
#   2. 禁止写死 localhost：服务间地址一律经环境变量配置，默认值采用
#      docker-compose 服务名（mysql/redis/backend/websocket/scheduler），
#      由编排网络解析（需求 25.4、规范 21）。
#   3. 依赖顺序：backend/websocket/scheduler 依赖 mysql、redis 健康后再启动；
#      frontend 依赖 backend 健康后再启动（depends_on + condition: service_healthy）。
#   4. 各服务均配置 healthcheck：后端类服务探测 /health，frontend 探测首页，
#      mysql 用 mysqladmin ping，redis 用 redis-cli ping。
#   5. 环境变量集中在同目录 .env（参考 .env.example），未提供时回退合理默认值。
#
# 引用任务 20.1 的各服务 Dockerfile：
#   backend/Dockerfile、websocket/Dockerfile、scheduler/Dockerfile、frontend/Dockerfile

services:
  # ==========================================================================
  # MySQL 8.0 —— 业务数据库（utf8mb4 + 北京时间 +08:00）
  # ==========================================================================
  mysql:
    image: mysql:8.0
    container_name: pdd_mysql
    restart: unless-stopped
    # MySQL 启动参数：北京时间 +08:00（需求 24.8）、字符集 utf8mb4（规范 8）
    command:
      - --default-time-zone=+08:00
      - --character-set-server=utf8mb4
      - --collation-server=utf8mb4_unicode_ci
    environment:
      # root 密码与初始库由环境变量注入，未提供时回退默认值（与 common 配置一致）
      MYSQL_ROOT_PASSWORD: ${MYSQL_PASSWORD:-root}
      MYSQL_DATABASE: ${MYSQL_DATABASE:-pdd_auto_reply}
      TZ: Asia/Shanghai
    ports:
      # 宿主机端口可经环境变量调整，默认 3306（仅本机调试用，生产可移除映射）
      - "${MYSQL_HOST_PORT:-3306}:3306"
    volumes:
      # 数据持久化（禁止删除数据，规范 11）
      - mysql_data:/var/lib/mysql
    networks:
      - pdd_network
    healthcheck:
      # 以 root 账号 ping，确认数据库已可服务
      test: ["CMD", "mysqladmin", "ping", "-h", "127.0.0.1", "-uroot", "-p${MYSQL_PASSWORD:-root}"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 30s

  # ==========================================================================
  # Redis —— 缓存 / 分布式锁
  # ==========================================================================
  redis:
    image: redis:7-alpine
    container_name: pdd_redis
    restart: unless-stopped
    # 有密码时以 --requirepass 启动；REDIS_PASSWORD 为空则不启用密码
    command: >
      sh -c "if [ -n \"$$REDIS_PASSWORD\" ]; then
               redis-server --requirepass \"$$REDIS_PASSWORD\" --appendonly yes;
             else
               redis-server --appendonly yes;
             fi"
    environment:
      REDIS_PASSWORD: ${REDIS_PASSWORD:-}
      TZ: Asia/Shanghai
    ports:
      - "${REDIS_HOST_PORT:-6379}:6379"
    volumes:
      - redis_data:/data
    networks:
      - pdd_network
    healthcheck:
      # 有密码时携带 -a 参数；无密码时该参数为空字符串不影响
      test: ["CMD-SHELL", "redis-cli ${REDIS_PASSWORD:+-a $REDIS_PASSWORD} ping | grep -q PONG"]
      interval: 10s
      timeout: 5s
      retries: 10
      start_period: 10s

  # ==========================================================================
  # backend —— HTTP API 服务（默认 8089，/health 健康检查）
  # ==========================================================================
  backend:
    build:
      # 构建上下文为项目根目录（Dockerfile 内同时复制 common 与 backend）
      context: .
      dockerfile: backend/Dockerfile
    image: pdd_backend
    container_name: pdd_backend
    restart: unless-stopped
    # 仅在 mysql/redis 健康后启动（保证依赖顺序）
    depends_on:
      mysql:
        condition: service_healthy
      redis:
        condition: service_healthy
    environment:
      ENVIRONMENT: ${ENVIRONMENT:-production}
      TZ: Asia/Shanghai
      # —— MySQL（host 用 docker 服务名 mysql，禁止写死 localhost）——
      MYSQL_HOST: ${MYSQL_HOST:-mysql}
      MYSQL_PORT: ${MYSQL_PORT:-3306}
      MYSQL_USER: ${MYSQL_USER:-root}
      MYSQL_PASSWORD: ${MYSQL_PASSWORD:-root}
      MYSQL_DATABASE: ${MYSQL_DATABASE:-pdd_auto_reply}
      # —— Redis（host 用 docker 服务名 redis）——
      REDIS_HOST: ${REDIS_HOST:-redis}
      REDIS_PORT: ${REDIS_PORT:-6379}
      REDIS_PASSWORD: ${REDIS_PASSWORD:-}
      REDIS_DB: ${REDIS_DB:-0}
      # —— 服务端口 ——
      BACKEND_WEB_PORT: ${BACKEND_WEB_PORT:-8089}
      # —— 服务间地址（用 docker 服务名，禁止写死 localhost，需求 25.4）——
      BACKEND_WEB_SERVICE_URL: ${BACKEND_WEB_SERVICE_URL:-http://backend:8089}
      WEBSOCKET_SERVICE_URL: ${WEBSOCKET_SERVICE_URL:-http://websocket:8090}
      SCHEDULER_SERVICE_URL: ${SCHEDULER_SERVICE_URL:-http://scheduler:8091}
      # —— 安全密钥（生产务必经环境变量注入）——
      JWT_SECRET_KEY: ${JWT_SECRET_KEY:-change-me-in-env}
      DATA_ENCRYPT_KEY: ${DATA_ENCRYPT_KEY:-change-me-data-encrypt-key}
      INTERNAL_SERVICE_TOKEN: ${INTERNAL_SERVICE_TOKEN:-change-me-internal-service-token}
      LOG_LEVEL: ${LOG_LEVEL:-INFO}
    ports:
      - "${BACKEND_WEB_PORT:-8089}:8089"
    volumes:
      # 静态资源 / 上传文件持久化（与各服务共享同一卷）
      - backend_static:/app/backend/static
    networks:
      - pdd_network
    healthcheck:
      test: ["CMD", "curl", "-fsS", "http://127.0.0.1:8089/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 40s

  # ==========================================================================
  # websocket —— 长连接服务（默认 8090，含 Playwright 浏览器，/health 健康检查）
  # ==========================================================================
  websocket:
    build:
      context: .
      dockerfile: websocket/Dockerfile
    image: pdd_websocket
    container_name: pdd_websocket
    restart: unless-stopped
    depends_on:
      mysql:
        condition: service_healthy
      redis:
        condition: service_healthy
      # backend 负责建表自检，websocket 待其健康后再启动，避免表缺失
      backend:
        condition: service_healthy
    environment:
      ENVIRONMENT: ${ENVIRONMENT:-production}
      TZ: Asia/Shanghai
      MYSQL_HOST: ${MYSQL_HOST:-mysql}
      MYSQL_PORT: ${MYSQL_PORT:-3306}
      MYSQL_USER: ${MYSQL_USER:-root}
      MYSQL_PASSWORD: ${MYSQL_PASSWORD:-root}
      MYSQL_DATABASE: ${MYSQL_DATABASE:-pdd_auto_reply}
      REDIS_HOST: ${REDIS_HOST:-redis}
      REDIS_PORT: ${REDIS_PORT:-6379}
      REDIS_PASSWORD: ${REDIS_PASSWORD:-}
      REDIS_DB: ${REDIS_DB:-0}
      WEBSOCKET_PORT: ${WEBSOCKET_PORT:-8090}
      BACKEND_WEB_SERVICE_URL: ${BACKEND_WEB_SERVICE_URL:-http://backend:8089}
      WEBSOCKET_SERVICE_URL: ${WEBSOCKET_SERVICE_URL:-http://websocket:8090}
      SCHEDULER_SERVICE_URL: ${SCHEDULER_SERVICE_URL:-http://scheduler:8091}
      JWT_SECRET_KEY: ${JWT_SECRET_KEY:-change-me-in-env}
      DATA_ENCRYPT_KEY: ${DATA_ENCRYPT_KEY:-change-me-data-encrypt-key}
      INTERNAL_SERVICE_TOKEN: ${INTERNAL_SERVICE_TOKEN:-change-me-internal-service-token}
      LOG_LEVEL: ${LOG_LEVEL:-INFO}
      # Playwright：账号密码登录默认非无头（需必要时人工验证），经环境变量可调
      BROWSER_HEADLESS: ${BROWSER_HEADLESS:-false}
      MAX_CAPTCHA_CONCURRENT: ${MAX_CAPTCHA_CONCURRENT:-1}
      # Playwright 持久化用户数据目录，须与下方挂载卷一致，确保容器重建后登录态不丢失
      PLAYWRIGHT_USER_DATA_DIR: ${PLAYWRIGHT_USER_DATA_DIR:-/app/websocket/browser_data}
    ports:
      - "${WEBSOCKET_PORT:-8090}:8090"
    volumes:
      - backend_static:/app/backend/static
      # 浏览器持久化数据（Playwright launch_persistent_context）
      - websocket_browser_data:/app/websocket/browser_data
    networks:
      - pdd_network
    healthcheck:
      test: ["CMD", "curl", "-fsS", "http://127.0.0.1:8090/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 60s

  # ==========================================================================
  # scheduler —— 定时任务服务（默认 8091，/health 健康检查）
  # ==========================================================================
  scheduler:
    build:
      context: .
      dockerfile: scheduler/Dockerfile
    image: pdd_scheduler
    container_name: pdd_scheduler
    restart: unless-stopped
    depends_on:
      mysql:
        condition: service_healthy
      redis:
        condition: service_healthy
      backend:
        condition: service_healthy
    environment:
      ENVIRONMENT: ${ENVIRONMENT:-production}
      TZ: Asia/Shanghai
      MYSQL_HOST: ${MYSQL_HOST:-mysql}
      MYSQL_PORT: ${MYSQL_PORT:-3306}
      MYSQL_USER: ${MYSQL_USER:-root}
      MYSQL_PASSWORD: ${MYSQL_PASSWORD:-root}
      MYSQL_DATABASE: ${MYSQL_DATABASE:-pdd_auto_reply}
      REDIS_HOST: ${REDIS_HOST:-redis}
      REDIS_PORT: ${REDIS_PORT:-6379}
      REDIS_PASSWORD: ${REDIS_PASSWORD:-}
      REDIS_DB: ${REDIS_DB:-0}
      SCHEDULER_PORT: ${SCHEDULER_PORT:-8091}
      BACKEND_WEB_SERVICE_URL: ${BACKEND_WEB_SERVICE_URL:-http://backend:8089}
      WEBSOCKET_SERVICE_URL: ${WEBSOCKET_SERVICE_URL:-http://websocket:8090}
      SCHEDULER_SERVICE_URL: ${SCHEDULER_SERVICE_URL:-http://scheduler:8091}
      JWT_SECRET_KEY: ${JWT_SECRET_KEY:-change-me-in-env}
      DATA_ENCRYPT_KEY: ${DATA_ENCRYPT_KEY:-change-me-data-encrypt-key}
      LOG_LEVEL: ${LOG_LEVEL:-INFO}
    ports:
      - "${SCHEDULER_PORT:-8091}:8091"
    volumes:
      - backend_static:/app/backend/static
    networks:
      - pdd_network
    healthcheck:
      test: ["CMD", "curl", "-fsS", "http://127.0.0.1:8091/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 40s

  # ==========================================================================
  # frontend —— Vue 3 构建产物，由 nginx 提供并反向代理后端 API
  # ==========================================================================
  frontend:
    build:
      context: .
      dockerfile: frontend/Dockerfile
    image: pdd_frontend
    container_name: pdd_frontend
    restart: unless-stopped
    # 后端健康后再启动，保证 API 反向代理可用
    depends_on:
      backend:
        condition: service_healthy
    environment:
      TZ: Asia/Shanghai
      # nginx 反向代理后端地址（用 docker 服务名，禁止写死 localhost，需求 25.4）
      BACKEND_API_URL: ${BACKEND_API_URL:-http://backend:8089}
    ports:
      - "${FRONTEND_HOST_PORT:-80}:80"
    networks:
      - pdd_network
    healthcheck:
      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://127.0.0.1:80/"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 15s

# ==============================================================================
# 命名卷（数据持久化，禁止删除数据 —— 规范 11）
# ==============================================================================
volumes:
  mysql_data:
    driver: local
  redis_data:
    driver: local
  backend_static:
    driver: local
  websocket_browser_data:
    driver: local

# ==============================================================================
# 自定义桥接网络：服务间经服务名互相解析（禁止写死 localhost）
# ==============================================================================
networks:
  pdd_network:
    driver: bridge