name: Publish container images (GHCR)

on:
  workflow_run:
    workflows: ["Mark stable commit"]
    types: [completed]
  schedule:
    - cron: "0 3 * * *"
  workflow_dispatch:

jobs:
  prepare:
    if: ${{ github.event_name != 'workflow_run' || github.event.workflow_run.conclusion == 'success' }}
    runs-on: ubuntu-latest

    permissions:
      contents: read

    outputs:
      releases: ${{ steps.info.outputs.releases }}

    steps:
      - name: Checkout repository (with tags)
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Resolve the releases this run publishes
        id: info
        env:
          WORKFLOW_RUN_SHA: ${{ github.event.workflow_run.head_sha }}
        run: bash scripts/github/publish-containers/compute-publish-container-info.sh

  build:
    needs: prepare
    if: ${{ needs.prepare.result == 'success' && needs.prepare.outputs.releases != '[]' }}
    name: Build ${{ matrix.distro }} ${{ matrix.release.version }} for ${{ matrix.target.platform }}
    runs-on: ${{ matrix.target.runner }}

    permissions:
      contents: read
      packages: write

    strategy:
      fail-fast: false
      matrix:
        distro: &distros [arch, debian, ubuntu, fedora, centos]
        target:
          - platform: linux/amd64
            runner: ubuntu-latest
          - platform: linux/arm64
            runner: ubuntu-24.04-arm
        release: ${{ fromJSON(needs.prepare.outputs.releases) }}

    steps:
      - name: Checkout ${{ matrix.release.version }}
        uses: actions/checkout@v7
        with:
          ref: ${{ matrix.release.sha }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003
        with:
          use: true

      - name: Login to GHCR
        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push ${{ matrix.distro }} ${{ matrix.release.version }} for ${{ matrix.target.platform }}
        env:
          OWNER: ${{ github.repository_owner }}
          VERSION: ${{ matrix.release.version }}
          PKGMGR_DISTRO: ${{ matrix.distro }}
          PLATFORM: ${{ matrix.target.platform }}
        run: bash scripts/github/publish-containers/publish-container-images.sh

  merge:
    needs: [prepare, build]
    if: ${{ !cancelled() && needs.prepare.result == 'success' && needs.prepare.outputs.releases != '[]' }}
    name: Merge ${{ matrix.distro }} ${{ matrix.release.version }}
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write

    strategy:
      fail-fast: false
      matrix:
        distro: *distros
        release: ${{ fromJSON(needs.prepare.outputs.releases) }}

    steps:
      - name: Checkout ${{ matrix.release.version }}
        uses: actions/checkout@v7
        with:
          ref: ${{ matrix.release.sha }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003
        with:
          use: true

      - name: Login to GHCR
        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Join both platforms of ${{ matrix.distro }} ${{ matrix.release.version }} under its tags
        env:
          OWNER: ${{ github.repository_owner }}
          VERSION: ${{ matrix.release.version }}
          ALIASES: ${{ matrix.release.aliases }}
          PKGMGR_DISTRO: ${{ matrix.distro }}
        run: bash scripts/github/publish-containers/merge-container-images.sh