services:
  mysql:
    image: mysql:8.0.35
    command:
      - --character-set-server=utf8mb4
      - --collation-server=utf8mb4_0900_ai_ci
      - --default-time-zone=+08:00
      - --sql-mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
    environment:
      MYSQL_DATABASE: hulumath
      MYSQL_USER: hulumath
      MYSQL_PASSWORD: local-only-password
      MYSQL_ROOT_PASSWORD: local-root-only-password
    ports:
      - "127.0.0.1:3307:3306"
    healthcheck:
      test: ["CMD-SHELL", "mysqladmin ping -h 127.0.0.1 -uroot -p$$MYSQL_ROOT_PASSWORD --silent"]
      interval: 5s
      timeout: 3s
      retries: 30
    volumes:
      - mysql_data:/var/lib/mysql

  redis:
    image: redis:7-alpine
    command: ["redis-server", "--appendonly", "yes"]
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 3s
      retries: 20
    volumes:
      - redis_data:/data

  migrate:
    build: .
    environment: &app-environment
      DJANGO_DEBUG: "false"
      DJANGO_SECRET_KEY: local-compose-secret-change-before-production
      DJANGO_ALLOWED_HOSTS: localhost,127.0.0.1
      DATABASE_URL: mysql://hulumath:local-only-password@mysql:3306/hulumath
      REDIS_URL: redis://redis:6379/0
    command: ["python", "manage.py", "migrate", "--noinput"]
    depends_on:
      mysql:
        condition: service_healthy

  web:
    build: .
    environment: *app-environment
    ports:
      - "8000:8000"
    depends_on:
      migrate:
        condition: service_completed_successfully
      redis:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8000/health/', timeout=3)"]
      interval: 10s
      timeout: 5s
      retries: 10

volumes:
  mysql_data:
  redis_data: