package.yml

name: package
on:
  push:
    branches: ['main']
  release:
    types: [published]
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}
jobs:
  build:
    runs-on: ${{ matrix.runner }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: linux/amd64
            runner: blacksmith-4vcpu-ubuntu-2404
          - platform: linux/arm64
            runner: ubuntu-24.04-arm
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-tags: true
          fetch-depth: 0

      - name: Prepare
        run: |
          platform='${{ matrix.platform }}'
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

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

      - name: Build and push Docker image
        id: build
        uses: docker/build-push-action@v6
        with:
          context: .
          # Only tag by registry + image name to to push by digest
          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: ${{ matrix.platform }}
          outputs: type=image,push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p ${{ runner.temp }}/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "${{ runner.temp }}/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ env.PLATFORM_PAIR }}
          path: ${{ runner.temp }}/digests/*
          if-no-files-found: error
          retention-days: 1

      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v2
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
          subject-digest: ${{ steps.build.outputs.digest }}
          push-to-registry: true

  merge:
    runs-on: blacksmith-4vcpu-ubuntu-2404
    needs:
      - build
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-tags: true
          fetch-depth: 0

      - name: Get short commit SHA
        id: commit
        run: |
          COMMIT_SHA=$(git rev-parse --short HEAD)
          echo "sha=$COMMIT_SHA" >> $GITHUB_OUTPUT
          echo "Short commit SHA: $COMMIT_SHA"

      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: ${{ runner.temp }}/digests
          pattern: digests-*
          merge-multiple: true

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

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

      - name: Check for git tag
        id: tag
        run: |
          TAG=$(git describe --exact-match --tags HEAD 2>/dev/null || echo "")
          echo "tag=$TAG" >> $GITHUB_OUTPUT
          if [ -n "$TAG" ]; then
            echo "Git tag found: $TAG"
          else
            echo "No git tag found for current commit"
          fi

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=raw,value=${{ steps.tag.outputs.tag }},enable=${{ steps.tag.outputs.tag != '' }}
            type=raw,value=${{ steps.commit.outputs.sha }}

      - name: Create manifest list and push
        working-directory: ${{ runner.temp }}/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.meta.outputs.version }}