on:
  push:
    tags:
      - '*.*.*'

permissions:
  contents: read
  packages: write

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4

      - name: Extract Registry Hostname
        id: registry
        run: |
          # Strip https:// or http:// prefix using bash parameter expansion
          URL="${{ github.server_url }}"
          HOST="${URL#*://}"
          echo "host=$HOST" >> "$GITHUB_OUTPUT"

      - name: Docker Meta Action
        uses: docker/metadata-action@v6
        id: meta
        with:
          images: ${{ steps.registry.outputs.host }}/${{ github.repository }}
          tags: |
            type=ref,event=tag
            type=sha,format=short
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}

      - name: Log in to Gitea Container Registry
        uses: docker/login-action@v4
        with:
          registry: ${{ steps.registry.outputs.host }}
          username: ${{ secrets.USERNAME }}
          password: ${{ secrets.TOKEN }}

      - name: Build Docker image
        uses: docker/build-push-action@v7
        with:
          context: .
          load: true
          tags: ${{ steps.meta.outputs.tags }}
          build-args:
            GITEA_VERSION=${{ github.ref_name }}

      - name: Test Docker image
        run: |
          docker run --rm ${{ steps.meta.outputs.tags }} gitea --version

      - name: Push Docker image
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: liniux/amd64,linux/arm64,linux/arm/v7
          push: true
          tags: ${{ steps.meta.outputs.tags }}