name: Build and Push Image

on:
  push:
    branches: [main]
  workflow_dispatch: {}

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout
        uses: actions/checkout@v7

      - name: Log in to GHCR
        uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

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

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=sha,format=short
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push
        uses: docker/build-push-action@v7
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  cleanup:
    needs: build-and-push
    runs-on: ubuntu-latest
    permissions:
      packages: write
    steps:
      - name: Keep only the last 4 successful images
        uses: dataaxiom/ghcr-cleanup-action@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          package: icloud-contacts-sync
          keep-n-tagged: 4
          delete-untagged: true
          exclude-tags: latest