name: PR Comment Commands

on:
  issue_comment:
    types: [created]

jobs:
  format:
    if: >
      startsWith(github.event.comment.body, '/format') &&
      github.event.issue.pull_request != null &&
      !contains(github.event.comment.body, '[!NOTE]')
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout PR branch
        uses: actions/checkout@v3
        with:
          ref: refs/pull/${{ github.event.issue.number }}/head
          token: ${{ secrets.GH_TOKEN }}

      - name: Set up Python 3.x
        uses: actions/setup-python@v4
        with:
          python-version: '3.x'

      - name: Install black
        run: pip install black

      - name: Run black
        run: black .

      - name: Get PR branch name
        id: get_pr_branch
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_TOKEN }}
          script: |
            const pr = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number
            });
            core.setOutput('branch', pr.data.head.ref);

      - name: Commit & Push if changed
        env:
          PR_BRANCH: ${{ steps.get_pr_branch.outputs.branch }}
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          if [ -n "$(git status --porcelain)" ]; then
            git add .
            git commit -m "chore: format code with black"
            git push origin HEAD:${PR_BRANCH}
          else
            echo "No changes to commit."
          fi

      - name: Comment on PR
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_TOKEN }}
          script: |
            github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
                body: "> [!NOTE]\n> 코드 포매팅이 완료되었어요."
            })

  review:
    if: >
      startsWith(github.event.comment.body, '/review') &&
      github.event.issue.pull_request != null &&
      !contains(github.event.comment.body, '[!NOTE]')
    runs-on: ubuntu-latest

    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Label PR as "review required"
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_TOKEN }}
          script: |
            github.rest.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              labels: ["status: review required"]
            })
      - name: Request reviewers
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GH_TOKEN }}
          script: |
            const pr = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number
            });
            const submitter = pr.data.head.user.login;
            const reviewers = ["norhu1130", "janghanul090801"].filter(r => r !== submitter);
            if (reviewers.length > 0) {
              await github.rest.pulls.requestReviewers({
                owner: context.repo.owner,
                repo: context.repo.repo,
                pull_number: context.issue.number,
                reviewers
              });
            }