name: Build and Publish Docker Image

on:
  push:
    branches:
      - main  # Trigger on pushes to main

jobs:
  build-and-push:
    runs-on: ubuntu-latest  # Ensure your Gitea runner has this label
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

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

      # Login to your registry (Docker Hub, Gitea Package Registry, or Harbor)
      - name: Login to Docker Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ secrets.DOCKER_REGISTRY }} # Remove if using Docker Hub
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile
          push: true
          # Tags the image as 'latest' and also uses the git SHA for versioning
          tags: |
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:latest
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:${{ gitea.sha }}
          # Caching speeds up builds by reusing layers (crucial for 'uv' installs)
          labels: |
            org.opencontainers.image.source=${{ gitea.server_url }}/${{ gitea.repository }}
            org.opencontainers.image.description=Email Classifier Service
          cache-from: type=gha
          cache-to: type=gha,mode=max