name: PR合并自动部署

on:
  pull_request:
    branches:
      - main
    types:
      - closed

concurrency:
  group: production-deploy
  cancel-in-progress: false

jobs:
  test:
    if: ${{ github.event.pull_request.merged == true }}
    runs-on: ubuntu-latest
    steps:
      - name: 检出 main
        uses: actions/checkout@v4
        with:
          ref: main

      - name: 配置 Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"
          cache: pip

      - name: 安装 MySQL 编译依赖
        run: |
          sudo apt-get update
          sudo apt-get install -y default-libmysqlclient-dev pkg-config

      - name: 安装测试依赖
        run: pip install -r requirements-dev.txt

      - name: 检查迁移文件
        working-directory: backend
        run: python manage.py makemigrations --check --dry-run

      - name: Django 系统检查
        working-directory: backend
        run: python manage.py check

      - name: ASGI 启动导入检查
        working-directory: backend
        run: python -c "from config.asgi import application; print(type(application).__name__)"

      - name: 运行测试
        run: pytest -q

      - name: 启动 MySQL 8.0.35
        run: |
          docker rm -f hulumath-deploy-mysql 2>/dev/null || true
          docker run -d --name hulumath-deploy-mysql \
            -p 3307:3306 \
            -e MYSQL_ROOT_PASSWORD=ci-root-password \
            -e MYSQL_DATABASE=hulumath \
            mysql:8.0.35 \
            --character-set-server=utf8mb4 \
            --collation-server=utf8mb4_0900_ai_ci
          for i in $(seq 1 60); do
            if docker exec hulumath-deploy-mysql \
              mysqladmin ping -h 127.0.0.1 -uroot -pci-root-password --silent; then
              exit 0
            fi
            sleep 2
          done
          docker logs hulumath-deploy-mysql
          exit 1

      - name: MySQL 迁移与全量测试
        env:
          DATABASE_URL: mysql://root:ci-root-password@127.0.0.1:3307/hulumath
        run: |
          python backend/manage.py check --database default
          python backend/manage.py check_mysql
          python backend/manage.py migrate --noinput
          pytest -q

  deploy:
    if: ${{ github.event.pull_request.merged == true }}
    needs:
      - test
    runs-on: ubuntu-latest
    steps:
      - name: 配置 SSH 环境
        env:
          DEPLOY_SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
          DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
        run: |
          set -eu
          mkdir -p ~/.ssh
          printf '%s\n' "$DEPLOY_SSH_KEY" > ~/.ssh/deploy_key
          chmod 600 ~/.ssh/deploy_key
          ssh-keyscan -H "$DEPLOY_HOST" >> ~/.ssh/known_hosts

      - name: 远程执行 Django 部署
        env:
          DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
          DEPLOY_USER: ${{ secrets.DEPLOY_USER }}
        run: |
          ssh -T -i ~/.ssh/deploy_key \
            "$DEPLOY_USER@$DEPLOY_HOST" <<'EOF'

          set -Eeuo pipefail

          PROJECT="/www/wwwroot/Hulumath-Web"
          REPOSITORY_URL="http://117.72.28.96:8765/Jacky/Hulumath-Web.git"
          PYTHON_BIN="/www/server/pyporject_evn/versions/3.12.13/bin/python3"

          exec 9>/tmp/hulumath-production-deploy.lock
          if ! flock -n 9; then
            echo "已有部署正在执行，本次退出"
            exit 1
          fi

          echo "========================================"
          echo "开始部署 Django 生产版"
          echo "项目目录: $PROJECT"
          echo "========================================"

          cd "$PROJECT"
          git config --global --add safe.directory "$PROJECT" || true

          if [ ! -d .git ]; then
            echo "当前目录不是 Git 仓库"
            exit 1
          fi

          PREVIOUS_REVISION="$(git rev-parse HEAD)"

          echo "获取远程 main..."
          git remote set-url origin "$REPOSITORY_URL"
          git fetch origin main
          git reset --hard origin/main

          chmod +x scripts/deploy_production.sh

          PROJECT_DIR="$PROJECT" \
          PYTHON_BIN="$PYTHON_BIN" \
          PREVIOUS_REVISION="$PREVIOUS_REVISION" \
            bash scripts/deploy_production.sh

          echo "========================================"
          echo "部署完成"
          echo "========================================"

          EOF