name: Build and Push donut-sync Docker Image

on:
  release:
    types: [published]
  push:
    branches: [main]
    paths:
      - "donut-sync/**"
  workflow_dispatch:
    inputs:
      tag:
        description: "Docker tag (e.g., v1.0.0, latest)"
        required: true
        default: "latest"

permissions:
  contents: read

env:
  REGISTRY: docker.io
  IMAGE_NAME: donutbrowser/donut-sync

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 #v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f #v3

      - name: Log in to Docker Hub
        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 #v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Determine tags
        id: tags
        run: |
          TAGS=""

          if [ "${{ github.event_name }}" = "release" ]; then
            # Stable release: tag with version and latest
            VERSION="${{ github.event.release.tag_name }}"
            TAGS="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${VERSION}"
            TAGS="${TAGS},${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest"
          elif [ "${{ github.event_name }}" = "push" ]; then
            # Push to main (nightly): tag with nightly and commit SHA
            SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-7)
            TAGS="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:nightly"
            TAGS="${TAGS},${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:nightly-${SHORT_SHA}"
          elif [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            TAGS="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.event.inputs.tag }}"
          fi

          echo "tags=${TAGS}" >> "$GITHUB_OUTPUT"
          echo "Tags: ${TAGS}"

      - name: Build and push Docker image
        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 #v6
        with:
          context: .
          file: ./donut-sync/Dockerfile
          push: true
          tags: ${{ steps.tags.outputs.tags }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: linux/amd64,linux/arm64