name: "Push multi-arch docker image to GAR"

on:
  push:
    branches: [taiko]
    tags:
      - "v*"

env:
  REGISTRY_IMAGE: us-docker.pkg.dev/evmchain/images/taiko-geth

jobs:
  build:
    name: Build and push docker image
    strategy:
      matrix:
        include:
          - runner: arc-runner-set
            platform: linux/amd64
          - runner: arc-runner-set-arm64
            platform: linux/arm64

    runs-on: ${{ matrix.runner }}

    steps:
      - name: Prepare Environment
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
          sudo apt-get update && sudo apt-get install -y git

      - name: Checkout
        uses: actions/checkout@v4

      - name: Login to GAR
        uses: docker/login-action@v3
        with:
          registry: us-docker.pkg.dev
          username: _json_key
          password: ${{ secrets.GAR_JSON_KEY }}

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

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

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=ref,event=tag
            type=sha

      - name: Cache Go build
        uses: actions/cache@v4
        with:
          path: |
            ${{ runner.os }}-go_build-platforms
          key: ${{ runner.os }}-go_build-platforms
          restore-keys: |
            ${{ runner.os }}-go_build-platforms

      - name: Inject cache into docker
        uses: reproducible-containers/buildkit-cache-dance@v3.1.0
        with:
          cache-map: |
            {
              "${{ runner.os }}-go_build-platforms": "/root/.cache/go-build"
            }
          skip-extraction: ${{ steps.cache.outputs.cache-hit }}

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v5
        with:
          context: .
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: ${{ matrix.platform }}
          push: true
          tags: ${{ env.REGISTRY_IMAGE }}
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},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: arc-runner-set
    needs:
      - build
    steps:
      - name: Prepare Environment
        run: sudo apt-get update && sudo apt-get install -y jq

      - 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: ${{ env.REGISTRY_IMAGE }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=ref,event=tag
            type=sha

      - name: Login to GAR
        uses: docker/login-action@v3
        with:
          registry: us-docker.pkg.dev
          username: _json_key
          password: ${{ secrets.GAR_JSON_KEY }}

      - 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: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }}