name: Build and Push Docker Image

on:
  push:
    branches:
      - main
      - master
    tags:
      - 'v*'
  workflow_dispatch:

env:
  REGISTRY: code.littlelan.cn
  IMAGE_NAME: carrotskin/backend

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # 获取完整历史以支持 git describe

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

      - name: Log in to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.REGISTRY_USERNAME }}
          password: ${{ secrets.REGISTRY_PASSWORD }}

      - name: Extract metadata for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=tag
            type=sha,prefix=sha-
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' }}

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

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

  # 可选：部署到服务器
  deploy:
    runs-on: ubuntu-latest
    needs: build-and-push
    if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master'
    
    steps:
      - name: Deploy notification
        run: |
          echo "## 🚀 Docker 镜像构建完成" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "镜像已推送到: \`${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}\`" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "可用标签:" >> $GITHUB_STEP_SUMMARY
          echo "- \`latest\`" >> $GITHUB_STEP_SUMMARY
          echo "- \`${{ github.ref_name }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- \`sha-${{ github.sha }}\`" >> $GITHUB_STEP_SUMMARY