comment-on-prs.yml

name: Comment on Pull request
#Cribbed from https://github.com/orgs/community/discussions/51403#discussioncomment-5535167

on:
  workflow_run:
    workflows: [Test Opencast]
    types:
      - completed

jobs:
  comment:
    if: > 
      github.event.workflow_run.conclusion == 'success'
      && github.repository == 'opencast/opencast'
    runs-on: ubuntu-latest
    steps:
      - name: Get Artifact and Pull request info
        env:
          GITHUB_TOKEN: ${{ github.token }}
          WORKFLOW_RUN_EVENT_OBJ: ${{ toJSON(github.event.workflow_run) }}
          OWNER: ${{ github.repository_owner }}
          REPO: ${{ github.event.repository.name }}
        run: |
          PREVIOUS_JOB_ID=$(jq -r '.id' <<< "$WORKFLOW_RUN_EVENT_OBJ")
          echo "Previous Job ID: $PREVIOUS_JOB_ID"
          echo "PREVIOUS_JOB_ID=$PREVIOUS_JOB_ID" >> "$GITHUB_ENV"

          PREVIOUS_TYPE=$(gh api "/repos/$OWNER/$REPO/actions/runs/$PREVIOUS_JOB_ID" \
            --jq ".event")
          echo "Previous event was a $PREVIOUS_TYPE"
          echo "PREVIOUS_TYPE=$PREVIOUS_TYPE" >> "$GITHUB_ENV"
          if [[ "pull_request" != "$PREVIOUS_TYPE" ]]; then
            exit 0
          fi

          SUITE_ID=$(jq -r '.check_suite_id' <<< "$WORKFLOW_RUN_EVENT_OBJ")
          echo "Previous Suite ID: $SUITE_ID"
          echo "SUITE_ID=$SUITE_ID" >> "$GITHUB_ENV"
          
          ARTIFACT_ID=$(gh api "/repos/$OWNER/$REPO/actions/artifacts" \
            --jq ".artifacts.[] |
            select(.workflow_run.id==${PREVIOUS_JOB_ID}) |
            select(.expired==false) |
            .id")
          
          echo "Artifact ID: $ARTIFACT_ID"
          echo "ARTIFACT_ID=$ARTIFACT_ID" >> "$GITHUB_ENV"
          
          PR_NUMBER=$(jq -r '.pull_requests[0].number' \
            <<< "$WORKFLOW_RUN_EVENT_OBJ")
          
          echo "Pull request Number: $PR_NUMBER"
          echo "PR_NUMBER=$PR_NUMBER" >> "$GITHUB_ENV"
          
          HEAD_SHA=$(jq -r '.pull_requests[0].head.sha' \
            <<< "$WORKFLOW_RUN_EVENT_OBJ")
          
          echo "Head SHA: $HEAD_SHA"
          echo "HEAD_SHA=$HEAD_SHA" >> "$GITHUB_ENV"
      - name: Find Comment
        uses: peter-evans/find-comment@v3
        id: find-comment
        if: env.PR_NUMBER != 'null' && env.PREVIOUS_TYPE == 'pull_request'
        with:
          issue-number: ${{ env.PR_NUMBER }}
          comment-author: 'github-actions[bot]'
          body-includes: 'You can find a link to the downloadable artifacts below'

      - name: Update Comment
        if: env.PR_NUMBER != 'null' && env.PREVIOUS_TYPE == 'pull_request'
        env:
          JOB_PATH: "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ env.PREVIOUS_JOB_ID }}"
          ARTIFACT_URL: "${{ github.server_url }}/${{ github.repository }}/suites/${{ env.SUITE_ID }}/artifacts/${{ env.ARTIFACT_ID }}"
          HEAD_SHA: "${{ env.HEAD_SHA }}"
        uses: peter-evans/create-or-update-comment@v4
        with:
          issue-number: ${{ env.PR_NUMBER }}
          comment-id: ${{ steps.find-comment.outputs.comment-id }}
          edit-mode: replace
          body: |-
            ![badge]
            
            Build Successful! You can find a link to the downloadable artifact below.
            
            | Name     | Link                    |
            | -------- | ----------------------- |
            | Commit   | ${{ env.HEAD_SHA }}     |
            | Logs     | ${{ env.JOB_PATH }}     |
            | Download | ${{ env.ARTIFACT_URL }} |
            
            [badge]: https://img.shields.io/badge/Build_Success!-0d1117?style=for-the-badge&labelColor=3fb950&logo=data:image/svg%2bxml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkdGg9IjI0IiBoZWlnaHQ9IjI0IiBmaWxsPSIjZmZmZmZmIj48cGF0aCBkPSJNMjEuMDMgNS43MmEuNzUuNzUgMCAwIDEgMCAxLjA2bC0xMS41IDExLjVhLjc0Ny43NDcgMCAwIDEtMS4wNzItLjAxMmwtNS41LTUuNzVhLjc1Ljc1IDAgMSAxIDEuMDg0LTEuMDM2bDQuOTcgNS4xOTVMMTkuOTcgNS43MmEuNzUuNzUgMCAwIDEgMS4wNiAwWiI+PC9wYXRoPjwvc3ZnPg==