name: Publish Docker image

on:
    release:
        types: [ published ]

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

jobs:
    build:
        runs-on: ubuntu-latest

        permissions:
            packages: write
            contents: read
            attestations: write
            id-token: write

        strategy:
            fail-fast: false
            matrix:
                platform:
                    - linux/amd64
                    - linux/arm64
        steps:
            -   name: Check out the repo
                uses: actions/checkout@v4

            -   name: Log in to Docker Hub
                uses: docker/login-action@v3
                with:
                    username: ${{ secrets.DOCKER_USERNAME }}
                    password: ${{ secrets.DOCKER_PASSWORD }}

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

            -   name: Docker meta
                id: meta
                uses: docker/metadata-action@v5
                with:
                    images: |
                        ${{ github.repository }}
                        ghcr.io/${{ github.repository }}

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

            -   name: Set up QEMU
                uses: docker/setup-qemu-action@v3

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

            -   name: Build and push Docker images
                id: build
                uses: docker/build-push-action@v6
                with:
                    context: .
                    target: frankenphp_prod
                    tags: ${{ steps.meta.outputs.tags }}
                    platforms: ${{ matrix.platform }}
                    labels: ${{ steps.meta.outputs.labels }}
                    outputs: type=image,name=${{ github.repository }},push-by-digest=true,name-canonical=true,push=true

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

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

    merge:
        runs-on: ubuntu-latest

        permissions:
            packages: write
            contents: read
            attestations: write
            id-token: write

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

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

            -   name: Docker meta
                id: meta
                uses: docker/metadata-action@v5
                with:
                    images: |
                        ${{ github.repository }}
                        ghcr.io/${{ github.repository }}

            -   name: Log in to Docker Hub
                uses: docker/login-action@v3
                with:
                    username: ${{ secrets.DOCKER_USERNAME }}
                    password: ${{ secrets.DOCKER_PASSWORD }}

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

            -   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") \
                      $(printf '${{ github.repository }}@sha256:%s ' *)          

            -   name: Inspect image
                run: |
                    docker buildx imagetools inspect ${{ github.repository }}:${{ steps.meta.outputs.version }}