meta.yml

---
name: meta

env:
  GH_TOKEN: ${{ github.token }}

on:
  pull_request:
  push:

jobs:
  trigger_workflow:
    name: trigger workflow based on changed files
    runs-on: ubuntu-22.04
    outputs:
      check_container_image: ${{ steps.check_container_image.outputs.result }}
      container_any_changed: ${{ steps.changed_files_yaml.outputs.container_any_changed }}
      image_any_changed: ${{ steps.changed_files_yaml.outputs.image_any_changed }}
      metadata_json: ${{ steps.metadata.outputs.json }}
      metadata_labels: ${{ steps.metadata.outputs.labels }}
      metadata_tags: ${{ steps.metadata.outputs.tags }}
    steps:
      - uses: actions/checkout@v3
        with:
          # fetch full history to be able to gather changed files in all new commits
          fetch-depth: 0

      - uses: tj-actions/changed-files@v41
        if: ${{ github.ref_type != 'tag' }}
        id: changed_files_yaml
        with:
          files_yaml: |
            container:
              - '.github/workflows/build-container.yml'
              - 'Dockerfile'
              - 'container.gitconfig'
              - 'utils.sh'
            image:
              - 'CMakeLists.txt'
              - 'main/**'
              - 'partitions_willow.csv'
              - 'sdkconfig.defaults'
              - 'spiffs/**'

      - name: extract metadata
        id: metadata
        uses: docker/metadata-action@v4
        with:
          images: "ghcr.io/${{ github.repository }}"
          tags: |
            type=ref,event=tag
            type=ref,event=pr
            type=ref,event=branch

      - name: extract tag name
        id: tag
        run: |
          tag=${{ fromJSON(steps.metadata.outputs.json).tags[0] }}
          echo "tag=${tag##*:}" >> $GITHUB_OUTPUT

      - name: debug
        run: |
          echo "${{ steps.metadata.outputs.json }}"
          echo "${{ steps.tag.outputs.tag }}"

      - uses: cloudposse/github-action-docker-image-exists@0.1.2
        continue-on-error: true
        id: check_container_image
        if: ${{ steps.changed_files_yaml.outputs.container_any_changed == 'false' && steps.changed_files_yaml.outputs.image_any_changed == 'true' }}
        with:
          image_name: "${{ github.repository }}"
          registry: ghcr.io
          tag: "${{ steps.tag.outputs.tag }}"

      - name: debug
        run: |
          echo "${{ steps.check_container_image.outputs.result }}"

  build_container:
    if: ${{ needs.trigger_workflow.outputs.container_any_changed == 'true' || github.ref_type == 'tag' }}
    uses: ./.github/workflows/build-container.yml
    needs: trigger_workflow
    with:
      container-image: ${{ fromJSON(needs.trigger_workflow.outputs.metadata_json).tags[0] }}
      labels: ${{ needs.trigger_workflow.outputs.metadata_labels }}
      tags: ${{ needs.trigger_workflow.outputs.metadata_tags }}

  build_willow:
    if: ${{ needs.trigger_workflow.outputs.container_any_changed == 'false' && needs.trigger_workflow.outputs.image_any_changed == 'true' }}
    uses: ./.github/workflows/build-willow.yml
    needs: trigger_workflow
    with:
      container-image: ${{ needs.trigger_workflow.outputs.check_container_image && fromJSON(needs.trigger_workflow.outputs.metadata_json).tags[0] || 'ghcr.io/toverainc/willow:main' }}