semantic-kernel/.github/workflows/java-format.yml

name: Java format automation
on:
  issue_comment:
    types: [ created ]

jobs:
  comment-driven-automation:
    if: |
      github.event.issue.pull_request &&
      (
        startsWith(github.event.comment.body, '/spotless') ||
        startsWith(github.event.comment.body, '/help')
      )

    runs-on: ubuntu-latest
    
    permissions:
      issues: write
      pull-requests: write

    steps:
      - name: Check for command
        id: command
        uses: xt0rted/slash-command-action@v2
        continue-on-error: true
        with:
          command: spotless
          reaction-type: "eyes"
    
      - name: Get command
        env:
          BODY: ${{ github.event.comment.body }}
        run: |
          # intentionally only looking at the first line of the body
          command=$(echo "$BODY" | head -1 | sed "s;^/;;")
          echo "COMMAND=$command" >> $GITHUB_ENV

      - uses: actions/checkout@v4

      - name: Check out PR branch
        env:
          NUMBER: ${{ github.event.issue.number }}
          GH_TOKEN: ${{ github.token }}
        run: |
          gh pr checkout $NUMBER
        if: env.COMMAND == 'spotless' 

      - name: Set up Maven cache
        uses: actions/setup-java@v3
        with:
          java-version: 17
          distribution: microsoft
          cache: maven
        if: env.COMMAND == 'spotless'

      - name: Set git user
        run: |
          git config user.name github-actions[bot]
          git config user.email github-action[bot]@users.noreply.github.com
        if: env.COMMAND == 'spotless'

      - name: Run command
        env:
          NUMBER: ${{ github.event.issue.number }}
          GH_TOKEN: ${{ github.token }}
        run: |
          available_commands="Available commands:
            * \`/spotless\` - runs \`./mvnw process-sources -DskipTests -Pbug-check\`
            * \`/help\` - displays available commands
          "
          if [[ "$COMMAND" == "spotless" ]]; then
            ./mvnw process-sources -DskipTests -Pbug-check
            if git diff --quiet; then
              gh pr comment $NUMBER --body "Already up-to-date"
              exit 0 # success
            fi
            git commit -a -m "./mvnw process-sources -DskipTests -Pbug-check"
            git push
          elif [[ "$COMMAND" == "help" ]]; then
            gh pr comment $NUMBER --body "$available_commands"
          else
            body="Unknown command: \`$COMMAND\`

            $available_commands
            "
            gh pr comment $NUMBER --body "$body"
          fi
        working-directory: java