name: Release

on:
  workflow_dispatch:

permissions:
  contents: write
  issues: write
  pull-requests: write
  packages: write

jobs:
  release:
    name: Semantic Release
    runs-on: ubuntu-latest
    outputs:
      new_version: ${{ steps.check.outputs.version }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Setup pnpm
        uses: pnpm/action-setup@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Run semantic-release
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: npx semantic-release

      - name: Check for new release
        id: check
        run: |
          if [ -f .release-version ]; then
            echo "version=$(cat .release-version)" >> "$GITHUB_OUTPUT"
          else
            echo "::error::semantic-release did not produce a new version. No releasable commits found."
            exit 1
          fi

  docker:
    name: Build (${{ matrix.platform }})
    needs: release
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: linux/amd64
            runner: ubuntu-latest
          - platform: linux/arm64
            runner: ubuntu-24.04-arm
    runs-on: ${{ matrix.runner }}
    steps:
      - name: Free disk space
        run: |
          sudo rm -rf /usr/share/dotnet /usr/local/lib/android /opt/ghc \
            /usr/local/share/boost /opt/hostedtoolcache/CodeQL
          sudo docker system prune -af
          df -h /

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

      - name: Checkout release tag
        uses: actions/checkout@v4
        with:
          ref: v${{ needs.release.outputs.new_version }}

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

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

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

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

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v6
        with:
          context: .
          file: docker/Dockerfile
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,"name=stirlingimage/stirling-image,ghcr.io/${{ github.repository }}",push-by-digest=true,name-canonical=true,push=true
          cache-from: type=gha,scope=${{ env.PLATFORM_PAIR }}
          cache-to: type=gha,mode=max,scope=${{ env.PLATFORM_PAIR }}

      - 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

  manifest:
    name: Create Multi-Arch Manifests
    needs: [release, docker]
    runs-on: ubuntu-latest
    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

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

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

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            stirlingimage/stirling-image
            ghcr.io/${{ github.repository }}
          tags: |
            type=semver,pattern={{version}},value=v${{ needs.release.outputs.new_version }}
            type=semver,pattern={{major}}.{{minor}},value=v${{ needs.release.outputs.new_version }}
            type=semver,pattern={{major}},value=v${{ needs.release.outputs.new_version }}
            type=raw,value=latest

      - name: Create Docker Hub manifest
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create \
            $(jq -cr '.tags | map(select(startswith("stirlingimage/")) | "-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf 'stirlingimage/stirling-image@sha256:%s ' *)

      - name: Create GHCR manifest
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create \
            $(jq -cr '.tags | map(select(startswith("ghcr.io/")) | "-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf 'ghcr.io/${{ github.repository }}@sha256:%s ' *)