name: Build and Publish Docker Image

on:
  push:
    branches:
      - '**'
  pull_request:
    types: [opened, synchronize, reopened]
  create:
    refs/tags/v*

jobs:
  build-only:
    runs-on: ubuntu-latest
    # All branches, all PRs, and anything that's not a push to main or a version tag
    if: github.event_name != 'push' || (github.event_name == 'push' && !startsWith(gitea.ref, 'refs/tags/v') && gitea.ref != 'refs/heads/main')
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

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

      - name: Build (no push)
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile
          push: false
          tags: |
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:build-test
          cache-from: type=gha
          cache-to: type=gha,mode=max

  build-and-push-main:
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && gitea.ref == 'refs/heads/main'
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

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

      - name: Login to Docker Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ secrets.DOCKER_REGISTRY }}
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push (main branch)
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile
          push: true
          tags: |
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:main
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:latest
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:${{ gitea.sha }}
          labels: |
            org.opencontainers.image.source=${{ gitea.server_url }}/${{ gitea.repository }}
            org.opencontainers.image.description=Email Classifier Service
          cache-from: type=gha
          cache-to: type=gha,mode=max

  build-and-push-tag:
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && startsWith(gitea.ref, 'refs/tags/v')
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

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

      - name: Login to Docker Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ secrets.DOCKER_REGISTRY }}
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push (tagged release)
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile
          push: true
          tags: |
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:${{ gitea.ref_name }}
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:latest
            ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_USERNAME }}/email-classifier:${{ gitea.sha }}
          labels: |
            org.opencontainers.image.source=${{ gitea.server_url }}/${{ gitea.repository }}
            org.opencontainers.image.description=Email Classifier Service
          cache-from: type=gha
          cache-to: type=gha,mode=max