badge.yml

name: Award Badge
on:
  pull_request_target:
    types: [closed]

jobs:
  get-delivery-files:
    runs-on: ubuntu-latest
    outputs:
      filenames: ${{ steps.files.outputs.added }}
    
    steps:
      - name: Get filenames of any deliveries being added
        id: files
        uses: Ana06/get-changed-files@v2.0.0
        with:
          format: 'json'
          filter: |
            deliveries/*.md
            maintenance_deliveries/*.md
          
  check-needs-badge:
    runs-on: ubuntu-latest
    needs: get-delivery-files
    if: github.event.pull_request.merged == true && needs.get-delivery-files.outputs.filenames != '[]'
    outputs:
      needs_badge: ${{ steps.badge-check.outputs.check }} 

    strategy:
      max-parallel: 1
      fail-fast: false
      matrix:
        filename: ${{ fromJson(needs.get-delivery-files.outputs.filenames) }}
 
    steps:
      - uses: actions/checkout@v2
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Parse delivery file 
        id: parse-delivery
        uses: w3f/parse-milestone-delivery-action@v3
        with:
          path: "${{ github.workspace }}/${{ matrix.filename }}"

      - name: Get application file
        run: wget "https://raw.githubusercontent.com/w3f/Grants-Program/master/applications/${{ steps.parse-delivery.outputs.application_document }}"

      - name: Parse application file
        id: parse-grant
        uses: w3f/parse-grant-application-action@v1
        with:
          path: "${{ steps.parse-delivery.outputs.application_document }}"

      - name: Check if this PR needs a badge comment
        id: badge-check
        # A matrix strategy overwrites outputs, meaning `needs_badge` will be `true` if atleast one of the files matches the following condition.
        # This way, there'll only be max 1 comment left per PR
        if: steps.parse-delivery.outputs.milestone_number == 1 && steps.parse-grant.outputs.level != 1
        run: echo "::set-output name=check::true"

  comment-badge:
    runs-on: ubuntu-latest
    needs: check-needs-badge
    if: needs.check-needs-badge.outputs.needs_badge
    steps:
      - name: Leave badge comment if applicable
        uses: thollander/actions-comment-pull-request@1.0.1
        with:
          message: >
            Congratulations on completing the first milestone of this grant!
            As part of the Grants Program, we want to help grant recipients acknowledge their grants publicly.
            To that end, we’ve created a [badge for projects](https://github.com/w3f/Grants-Program/blob/master/docs/Support%20Docs/grant-badge-guidelines.md)
            that successfully deliver their first milestone. 
            Note that it must only be used within the context of the delivered work, so please do not display it on
            your team or project's homepage unless accompanied by a short description of the grant.<br/><br/>
            Furthermore, you're now welcome to announce the grant publicly. Please remember to observe the
            [foundation’s guidelines](https://github.com/w3f/Grants-Program/blob/master/docs/Support%20Docs/announcement-guidelines.md) in doing so.
            In case you haven't done so yet, you may also reach out to grantsPR@web3.foundation for feedback on your announcement and cross-promotion.<br/><br/>
            Thank you for your contribution and good luck with the remaining milestones, if any!
            As usual, please let us know if you run into any delays by leaving a comment on the application PR, or directly submitting an
            [amendment](https://github.com/w3f/Grants-Program#changes-to-a-grant-after-approval).
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}