name: Validate PR Title
on:
  pull_request:
    types: [opened, edited, synchronize]
permissions:
  pull-requests: write
  contents: read
jobs:
  lint:
    name: 'Lint'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Setup Node.js
        uses: actions/setup-node@v4
      - name: Install Commitlint and CSpell
        run: npm install --save-dev @commitlint/{config-conventional,cli} cspell
      - run: echo "${{ github.event.pull_request.title }}" > pr-title.txt
      - name: Run Commitlint
        id: commitlint
        run: npx commitlint --edit pr-title.txt > commitlint_output.txt 2>&1
        if: github.event.pull_request.user.login != 'mergify[bot]'
      - name: Run CSpell
        id: cspell
        run: npx cspell --config .cspell.json pr-title.txt > cspell_output.txt 2>&1
        if: github.event.pull_request.user.login != 'mergify[bot]'
      - name: Delete Old Bot Comments
        if: always()
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # Fetch all comments on the PR
          COMMENTS=$(gh api repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments --jq '.[] | select(.user.login == "github-actions[bot]") | .id')

          # Delete comments authored by the bot
          for COMMENT_ID in $COMMENTS; do
            gh api repos/${{ github.repository }}/issues/comments/$COMMENT_ID -X DELETE
          done
      - name: Post PR Comment
        if: github.event.pull_request.user.login != 'mergify[bot]'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # Initialize status messages
          STATUS_COMMITLINT="PASSED"
          STATUS_CSPELL="PASSED"
          COMMITLINT_OUTPUT=$(cat commitlint_output.txt)
          CSPELL_OUTPUT=$(cat cspell_output.txt)
          COMMENT_BODY="### Found Issues In PR Title\n"

          if [ "${{ steps.commitlint.outcome }}" == "failure" ]; then
            STATUS_COMMITLINT="FAILED"
          fi

          if [ "${{ steps.cspell.outcome }}" == "failure" ]; then
            STATUS_CSPELL="FAILED"
          fi

          if [ "$STATUS_COMMITLINT" == "FAILED" ]; then
            COMMENT_BODY+="**❌ Conventional Commit Format**\n"
            COMMENT_BODY+="\n\`\`\`\n$COMMITLINT_OUTPUT\n\`\`\`\n"
          fi
          if [ "$STATUS_CSPELL" == "FAILED" ]; then
            COMMENT_BODY+="**❌ Spelling Error**\n"
            COMMENT_BODY+="\n\`\`\`\n$CSPELL_OUTPUT\n\`\`\`\n"
            COMMENT_BODY+="\n> If you believe the spelling error is a false positive, please add the word in **cspell.json** file.\n"
          fi

          if [ "$STATUS_COMMITLINT" == "FAILED" ] || [ "$STATUS_CSPELL" == "FAILED" ]; then
            # Post the comment
            echo -e "$COMMENT_BODY" | gh pr comment ${{ github.event.pull_request.number }} --body-file -
          fi