name: Build and Push Docker Image

on:
  workflow_dispatch:  # 允许手动触发
  push:
    branches:
      - main
      - develop
    tags:
      - 'v*'
  pull_request:
    branches:
      - main

env:
  REGISTRY: docker.io
  IMAGE_NAME: feather2dev/paper-burner-x

jobs:
  build-and-push:
    # PR 上仅需跑 test 必要检查；跳过镜像构建以避免 lock 不一致导致失败
    if: github.event_name != 'pull_request'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Hub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            # 避免在 PR 场景下出现 "-<sha>" 这种以连字符开头的非法标签
            # 统一使用稳定前缀，确保 Docker tag 合法（如 "sha-ac262a7"）
            type=sha,prefix=sha-
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Docker image
        id: build
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: linux/amd64,linux/arm64

      - name: Image digest
        run: echo ${{ steps.build.outputs.digest }}

  test:
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:16-alpine
        env:
          POSTGRES_USER: test
          POSTGRES_PASSWORD: test
          POSTGRES_DB: test
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        ports:
          - 5432:5432

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
          cache-dependency-path: server/package-lock.json

      - name: Install dependencies
        working-directory: ./server
        run: npm install --no-audit --no-fund

      - name: Generate Prisma Client
        working-directory: ./server
        run: npx prisma generate

      - name: Run database migrations
        working-directory: ./server
        env:
          DATABASE_URL: postgresql://test:test@localhost:5432/test
        run: npx prisma migrate deploy

      - name: Lint check (placeholder)
        working-directory: ./server
        run: npm run lint
        continue-on-error: true

      - name: Test server startup
        working-directory: ./server
        env:
          DATABASE_URL: postgresql://test:test@localhost:5432/test
          JWT_SECRET: test-secret-key-for-ci
        run: |
          timeout 10s node src/index.js || code=$?
          if [ $code -eq 124 ]; then
            echo "Server started successfully"
            exit 0
          else
            echo "Server failed to start"
            exit 1
          fi

      - name: Run unit tests
        working-directory: ./server
        env:
          NODE_ENV: test
          DATABASE_URL: postgresql://test:test@localhost:5432/test
          JWT_SECRET: test-secret-key-for-ci
        run: npm test