name: Release snapshot of PR
on:
  workflow_run:
    workflows: ["Build snapshot of PR"]
    types:
      - completed

jobs:
  release-and-comment:
    name: Release snapshot and comment in PR
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Download images
        uses: actions/download-artifact@v4
        with:
          path: /tmp/images
          pattern: image-linux-*
          merge-multiple: true
          run-id: ${{ github.event.workflow_run.id }}
          github-token: ${{ secrets.GH_PAT }}

      - name: Set up Buildx
        uses: docker/setup-buildx-action@v1

      - name: Load image
        run: |
          docker load --input /tmp/images/image-linux-amd64.tar
          docker load --input /tmp/images/image-linux-arm64.tar

      - name: Download PR number
        uses: actions/download-artifact@v4
        with:
          path: /tmp/pull_request_number
          pattern: pull_request_number
          run-id: ${{ github.event.workflow_run.id }}
          github-token: ${{ secrets.GH_PAT }}

      - name: Read the pull_request_number.txt file
        id: pull_request_number_reader
        uses: juliangruber/read-file-action@v1.0.0
        with:
          path: /tmp/pull_request_number/pull_request_number

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

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

      - name: Create comment
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          header: "pr-release"
          number: ${{ steps.pull_request_number_reader.outputs.content }}
          message: |
            #### :package: :robot: A new release has been made for this pull request.

            To play around with this PR, pull `ghcr.io/museofficial/muse:pr-${{ github.event.number }}` or `ghcr.io/museofficial/muse:${{ github.event.pull_request.head.sha }}`.

            Images are available for x86_64 and ARM64.

            > Latest commit: ${{ github.event.pull_request.head.sha }}