name: Release

# Publishes the multi-arch Acauã image (linux/amd64 + linux/arm64) to the Gitea
# container registry. A merge into main publishes `edge`; a v* tag re-points the
# image already built for the same inputs to X.Y.Z, X.Y and latest (no rebuild)
# and creates the Gitea Release. Needs the secret REGISTRY_TOKEN (Gitea token
# with write:package) visible to this repository.
on:
  push:
    branches: [main]
    tags: ['v*']
  workflow_dispatch:

concurrency:
  group: release-${{ gitea.ref }}
  cancel-in-progress: false

env:
  REGISTRY: git.lucasrguerra.dev.br

jobs:
  # The image is built only from these paths, so their tree hashes identify it.
  # When inputs-<hash> already exists (docs-only merge, workflow change, or a tag
  # on a commit main already published), nothing is built or tested again.
  plan:
    name: Plan (reuse the published image?)
    runs-on: linux-arm64
    outputs:
      inputs: ${{ steps.plan.outputs.inputs }}
      reuse: ${{ steps.plan.outputs.reuse }}
      image: ${{ steps.plan.outputs.image }}
    steps:
      - uses: actions/checkout@v7
      - id: plan
        env:
          REPO: ${{ gitea.repository }}
        run: |
          inputs=$(git rev-parse HEAD:Dockerfile HEAD:.dockerignore HEAD:Cargo.toml HEAD:Cargo.lock \
            HEAD:crates HEAD:apps/gui/ui HEAD:logo.png HEAD:scripts/fetch-libduckdb.sh | sha256sum | cut -c1-16)
          ns="${REPO,,}"
          token=$(curl -fsS "https://$REGISTRY/v2/token?service=container_registry&scope=repository:$ns:pull" | jq -r .token)
          code=$(curl -s -o /dev/null -w '%{http_code}' -I \
            -H "Authorization: Bearer $token" \
            -H 'Accept: application/vnd.oci.image.index.v1+json,application/vnd.docker.distribution.manifest.list.v2+json' \
            "https://$REGISTRY/v2/$ns/manifests/inputs-$inputs")
          echo "inputs-$inputs -> HTTP $code"
          reuse=false; [ "$code" = 200 ] && reuse=true
          echo "inputs=$inputs" >> "$GITHUB_OUTPUT"
          echo "reuse=$reuse" >> "$GITHUB_OUTPUT"
          echo "image=$REGISTRY/$ns" >> "$GITHUB_OUTPUT"

  ci:
    needs: plan
    if: ${{ needs.plan.outputs.reuse != 'true' }}
    uses: ./.gitea/workflows/ci.yml

  # Each architecture is built on a native runner (no QEMU) and pushed under a
  # per-architecture tag; publish joins them into one manifest list.
  build:
    name: Build image (${{ matrix.arch }})
    needs: [plan, ci]
    if: ${{ needs.plan.outputs.reuse != 'true' }}
    runs-on: ${{ matrix.runner }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - { arch: amd64, platform: linux/amd64, runner: linux-amd64 }
          - { arch: arm64, platform: linux/arm64, runner: linux-arm64 }
    steps:
      - uses: actions/checkout@v7
      - uses: docker/setup-buildx-action@v4
      - uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ gitea.actor }}
          password: ${{ secrets.REGISTRY_TOKEN }}
      - name: Build and push (per architecture)
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: ${{ matrix.platform }}
          push: true
          tags: ${{ needs.plan.outputs.image }}:build-${{ gitea.sha }}-${{ matrix.arch }}
          cache-from: type=registry,ref=${{ needs.plan.outputs.image }}:buildcache-${{ matrix.arch }}
          cache-to: type=registry,ref=${{ needs.plan.outputs.image }}:buildcache-${{ matrix.arch }},mode=max
      # Runs the image that was just pushed, on its own architecture.
      - name: Smoke test
        run: scripts/smoke-image.sh "${{ needs.plan.outputs.image }}:build-${{ gitea.sha }}-${{ matrix.arch }}"

  publish:
    name: Publish tags
    needs: [plan, build]
    # build is skipped, not successful, when the image is reused.
    if: ${{ !cancelled() && needs.plan.result == 'success' && (needs.build.result == 'success' || needs.plan.outputs.reuse == 'true') }}
    runs-on: linux-arm64
    steps:
      - uses: docker/setup-buildx-action@v4
      - uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ gitea.actor }}
          password: ${{ secrets.REGISTRY_TOKEN }}
      - name: Tags
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: ${{ needs.plan.outputs.image }}
          flavor: latest=false
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=raw,value=latest,enable=${{ startsWith(gitea.ref, 'refs/tags/v') && !contains(gitea.ref_name, '-') }}
            type=raw,value=edge,enable=${{ gitea.ref == 'refs/heads/main' }}
            type=sha,format=long
      - name: Apply tags
        run: |
          image='${{ needs.plan.outputs.image }}'
          tags=$(jq -cr '.tags | map("-t " + .) | join(" ")' <<< '${{ steps.meta.outputs.json }}')
          inputs='${{ needs.plan.outputs.inputs }}'
          if [ '${{ needs.plan.outputs.reuse }}' = true ]; then
            docker buildx imagetools create $tags "$image:inputs-$inputs"
          else
            docker buildx imagetools create $tags -t "$image:inputs-$inputs" \
              "$image:build-${{ gitea.sha }}-amd64" "$image:build-${{ gitea.sha }}-arm64"
          fi
      - name: Check architectures
        run: |
          docker buildx imagetools inspect "${{ needs.plan.outputs.image }}:inputs-${{ needs.plan.outputs.inputs }}" \
            --format '{{json .Manifest}}' \
            | jq -r '.manifests[] | select(.platform.os == "linux") | "\(.platform.os)/\(.platform.architecture)"' \
            | tee platforms.txt
          grep -qx linux/amd64 platforms.txt && grep -qx linux/arm64 platforms.txt
      - name: Summary
        run: |
          { echo "### Acauã image published (linux/amd64, linux/arm64)"; echo; echo '```'
            echo "${{ steps.meta.outputs.tags }}"; echo '```'; } >> "$GITHUB_STEP_SUMMARY"

  gitea-release:
    name: Gitea release
    needs: [plan, publish]
    if: ${{ !cancelled() && needs.publish.result == 'success' && startsWith(gitea.ref, 'refs/tags/v') }}
    runs-on: linux-arm64
    steps:
      - uses: actions/checkout@v7
        with:
          fetch-depth: 0
      - name: Release
        env:
          TAG: ${{ gitea.ref_name }}
          TOKEN: ${{ gitea.token }}
          API: ${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}
          IMAGE: ${{ needs.plan.outputs.image }}
        run: |
          if curl -fsS -H "Authorization: token $TOKEN" "$API/releases/tags/$TAG" >/dev/null 2>&1; then
            echo "release $TAG already exists"; exit 0
          fi
          { scripts/release-notes.sh "$TAG"; echo; echo '```bash'; echo "docker pull $IMAGE:${TAG#v}"; echo '```'; } > notes.md
          pre=false; case "$TAG" in *-*) pre=true ;; esac
          jq -n --arg tag "$TAG" --arg name "Acauã ${TAG#v}" --rawfile body notes.md --argjson pre "$pre" \
            '{tag_name:$tag, name:$name, body:$body, prerelease:$pre}' > release.json
          curl -fsS -X POST "$API/releases" -H "Authorization: token $TOKEN" \
            -H 'Content-Type: application/json' -d @release.json >/dev/null