create_issue_on_en_changes.yml

name: Trigger Issue on English Changes with Visual Diff

on:
  pull_request:
    types:
      - closed

permissions:
  issues: write

jobs:
  create_issue_on_english_changes:
    name: Create an issue after changes on the english version
    runs-on: ubuntu-latest
    permissions:
      issues: write
    steps:
      - name: Check out code
        uses: actions/checkout@v2
        with:
          fetch-depth: 2

      - name: Generate Visual Diff
        id: diff_generator
        run: |
          set -e
          set -o pipefail
          # Check if changes were made to the "en/" folder
          if git diff --quiet HEAD~1 main -- 'en/'; then
            echo "No changes in the 'en/' folder." >> $GITHUB_STEP_SUMMARY
            echo "SHOULD_ISSUE=0" >> "$GITHUB_OUTPUT"
          else
            # Getting the user who initiated the changes
            username="${{ github.event.sender.login }}"

            # Getting the event type
            if [ "${{ github.event_name }}" == "push" ]; then
              event_type="<Push"
            else
              event_type="PR"
            fi

            # Get the PR number if available
            pr_number="${{ github.event.pull_request.number }}"

            context="@$username has made changes on the original english version of the book ($event_type #${pr_number:-N/A})"
            
            # Generate a visual diff of the changes in the "en/" folder.
            message="$context\n\nVisual Diff of Changes:\n\n\`\`\`diff\n$(git diff HEAD~1 main -- 'en/')\n\`\`\`"
            
            echo "ISSUE_BODY<<EOF" >> "$GITHUB_OUTPUT"
            echo -e "$message" >> "$GITHUB_OUTPUT"
            echo "EOF" >> "$GITHUB_OUTPUT"
            echo "SHOULD_ISSUE=1" >> "$GITHUB_OUTPUT"
            
            echo "Issue is being generated"
          fi

      - name: Creating an issue on en/ folder changes
        uses: imjohnbo/issue-bot@3d96848fb5e9a4a473bb81ae62b4b4866a56e93a
        if: ${{ steps.diff_generator.outputs.SHOULD_ISSUE == '1' }}
        with:
          labels: "translate help-wanted"
          title: "Translation needed for existing languages"
          body: |
            ${{ steps.diff_generator.outputs.ISSUE_BODY }}
          pinned: false
          close-previous: false
        env:
          GITHUB_TOKEN: ${{ secrets.ACCESS_TOKEN }}