name: Build and Push Docker Image

on:
  workflow_call:
    inputs:
      dockerfile-path:
        required: true
        type: string
      image-name:
        required: true
        type: string
    outputs:
      build-tools-tag:
        description: "tag generated for build tools"
        value: ${{ jobs.tag.outputs.build-tools-tag }}

jobs:
  check-if-build-tools-dockerfile-changed:
    runs-on: ubuntu-latest
    outputs:
      docker_file_changed: ${{ steps.dockerfile.outputs.docker_file_changed }}
    steps:
      - name: Check if Dockerfile.buildtools has changed
        id: dockerfile
        run: |
          if [[ "$GITHUB_EVENT_NAME" != "pull_request" ]]; then
            echo "docker_file_changed=false" >> $GITHUB_OUTPUT
            exit
          fi
          updated_files=$(gh pr --repo neondatabase/neon diff ${{ github.event.pull_request.number }} --name-only)
          if [[ $updated_files == *"Dockerfile.buildtools"* ]]; then
            echo "docker_file_changed=true" >> $GITHUB_OUTPUT
          fi
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  tag:
    runs-on: ubuntu-latest
    needs: [ check-if-build-tools-dockerfile-changed ]
    outputs:
      build-tools-tag: ${{steps.buildtools-tag.outputs.image_tag}}

    steps:
      - name: Get buildtools tag
        env:
          DOCKERFILE_CHANGED: ${{ needs.check-if-build-tools-dockerfile-changed.outputs.docker_file_changed }}
        run: |
          if [[ "$GITHUB_EVENT_NAME" == "pull_request" ]] && [[ "${DOCKERFILE_CHANGED}" == "true" ]]; then
            IMAGE_TAG=$GITHUB_RUN_ID
          else
            IMAGE_TAG=pinned
          fi

          echo "image_tag=${IMAGE_TAG}" >> $GITHUB_OUTPUT
        shell: bash
        id: buildtools-tag

  kaniko:
    if: needs.check-if-build-tools-dockerfile-changed.outputs.docker_file_changed == 'true'
    needs: [ tag, check-if-build-tools-dockerfile-changed ]
    runs-on: [ self-hosted, dev, x64 ]
    container: gcr.io/kaniko-project/executor:v1.7.0-debug

    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - name: Configure ECR login
        run: echo "{\"credsStore\":\"ecr-login\"}" > /kaniko/.docker/config.json

      - name: Kaniko build
        run: |
          /kaniko/executor \
            --reproducible \
            --snapshotMode=redo \
            --skip-unused-stages \
            --dockerfile ${{ inputs.dockerfile-path }} \
            --cache=true \
            --cache-repo 369495373322.dkr.ecr.eu-central-1.amazonaws.com/cache \
            --destination 369495373322.dkr.ecr.eu-central-1.amazonaws.com/${{ inputs.image-name }}:${{ needs.tag.outputs.build-tools-tag }}-amd64

  kaniko-arm:
    if: needs.check-if-build-tools-dockerfile-changed.outputs.docker_file_changed == 'true'
    needs: [ tag, check-if-build-tools-dockerfile-changed ]
    runs-on: [ self-hosted, dev, arm64 ]
    container: gcr.io/kaniko-project/executor:v1.7.0-debug

    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - name: Configure ECR login
        run: echo "{\"credsStore\":\"ecr-login\"}" > /kaniko/.docker/config.json

      - name: Kaniko build
        run: |
          /kaniko/executor \
            --reproducible \
            --snapshotMode=redo \
            --skip-unused-stages \
            --dockerfile ${{ inputs.dockerfile-path }} \
            --cache=true \
            --cache-repo 369495373322.dkr.ecr.eu-central-1.amazonaws.com/cache \
            --destination 369495373322.dkr.ecr.eu-central-1.amazonaws.com/${{ inputs.image-name }}:${{ needs.tag.outputs.build-tools-tag }}-arm64

  manifest:
    if: needs.check-if-build-tools-dockerfile-changed.outputs.docker_file_changed == 'true'
    name: 'manifest'
    runs-on: [ self-hosted, dev, x64 ]
    needs:
      - tag
      - kaniko
      - kaniko-arm
      - check-if-build-tools-dockerfile-changed

    steps:
      - name: Create manifest
        run: |
          docker manifest create 369495373322.dkr.ecr.eu-central-1.amazonaws.com/${{ inputs.image-name }}:${{ needs.tag.outputs.build-tools-tag }} \
                         --amend 369495373322.dkr.ecr.eu-central-1.amazonaws.com/${{ inputs.image-name }}:${{ needs.tag.outputs.build-tools-tag }}-amd64 \
                         --amend 369495373322.dkr.ecr.eu-central-1.amazonaws.com/${{ inputs.image-name }}:${{ needs.tag.outputs.build-tools-tag }}-arm64

      - name: Push manifest
        run: docker manifest push 369495373322.dkr.ecr.eu-central-1.amazonaws.com/${{ inputs.image-name }}:${{ needs.tag.outputs.build-tools-tag }}