name: Docker Build & Push

# Trigger the workflow on pushes to the main branch
on:
  push:
    branches:
      - main
    tags:
      - 'v*' # Also run on tags starting with 'v' (e.g., v1.0.0)

jobs:
  build-and-publish:
    # Use a standard Linux runner
    runs-on: ubuntu-latest
    
    # Define variables for easy configuration
    env:
      # Replace 'gitea.local:3000' with your actual Gitea host and port (if non-standard)
      REGISTRY: git.vpn.cusano.net
      # Image name will be the Gitea repository path (e.g., username/repo-name)
      IMAGE_NAME: ${{ gitea.repository }}

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

      # Set up QEMU for multi-architecture building (optional, but highly recommended)
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      # Set up Docker Buildx (required for multi-platform and robust builds)
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to the Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          # Use your Gitea username for the login
          username: ${{ gitea.actor }}
          # Use a Personal Access Token (PAT) stored as a Gitea Action secret
          # You MUST create a GITEA_TOKEN secret with 'write:packages' scope.
          password: ${{ secrets.BUILD_TOKEN }}

      # Define image tags based on branch/tag information
      - name: Determine Image Tags
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=sha,prefix=,suffix=,enable=true,params=7
            type=ref,event=branch
            type=semver,pattern=v{{version}}

      # Build and Push the Docker image
      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          # Enable pushing to the registry
          push: true
          # Select platforms to build for (e.g., standard Linux amd64)
          platforms: linux/amd64, linux/arm64
          # Use the tags generated in the previous step
          tags: ${{ steps.meta.outputs.tags }}
          # Use the Dockerfile in the current directory (default: Dockerfile)
          file: ./Dockerfile
          # Set the build context
          context: .