name: Diffusers Bot

# Maintainer commands, triggered by commenting on an open PR:
#
#   /diffusers-bot style           run `make style && make quality` and push the fixes to the PR branch
#   /diffusers-bot review          request a Serge AI review (also works from an inline review comment)
#   /diffusers-bot pytest <args>   run `pytest <args>` on a GPU runner, e.g.
#                                  `/diffusers-bot pytest tests/models/test_modeling_common.py -k "some_test"`
#
# Auth is checked once in the `authorize` job. Each subcommand lives in its
# own reusable workflow file under .github/workflows/bot_*.yml.

on:
  issue_comment:
    types: [created]
  pull_request_review_comment:
    types: [created]

# Default to read-only; calling jobs grant extra permissions to the sub-workflows
# that need them.
permissions:
  contents: read

jobs:
  # ── Shared gate: authorize commenter & parse subcommand ──────────────────────
  authorize:
    name: Authorize
    if: |
      (
        github.event_name == 'issue_comment' &&
        github.event.issue.pull_request &&
        github.event.issue.state == 'open' &&
        contains(github.event.comment.body, '/diffusers-bot')
      ) || (
        github.event_name == 'pull_request_review_comment' &&
        contains(github.event.comment.body, '/diffusers-bot')
      )
    runs-on: ubuntu-latest
    permissions:
      pull-requests: read
      contents: read
    outputs:
      is_authorized: ${{ steps.check.outputs.is_authorized }}
      subcommand: ${{ steps.check.outputs.subcommand }}
      pytest_args: ${{ steps.check.outputs.pytest_args }}
    steps:
      - name: Authorize and parse command
        id: check
        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd  # v8.0.0
        with:
          script: |
            const commenter = context.payload.comment.user.login;
            const { data: permission } = await github.rest.repos.getCollaboratorPermissionLevel({
              owner: context.repo.owner,
              repo: context.repo.repo,
              username: commenter
            });
            const authorized = ['admin', 'write'].includes(permission.permission);
            console.log(`User ${commenter}: permission=${permission.permission}, authorized=${authorized}`);
            core.setOutput('is_authorized', authorized);

            const body = context.payload.comment.body;
            const firstLine = body.split('\n')[0];

            let subcommand = 'unknown';
            let pytestArgs = '';

            if (firstLine.startsWith('/diffusers-bot pytest')) {
              subcommand = 'pytest';
              pytestArgs = firstLine.replace('/diffusers-bot pytest', '').trim();
            } else if (body.includes('/diffusers-bot style')) {
              subcommand = 'style';
            } else if (body.includes('/diffusers-bot review')) {
              subcommand = 'review';
            }

            console.log(`Subcommand: ${subcommand}, pytestArgs: ${pytestArgs}`);
            core.setOutput('subcommand', subcommand);
            core.setOutput('pytest_args', pytestArgs);

  # ── Dispatch to sub-workflows ────────────────────────────────────────────────
  style:
    needs: authorize
    if: |
      needs.authorize.outputs.subcommand == 'style' &&
      needs.authorize.outputs.is_authorized == 'true' &&
      github.event_name == 'issue_comment'
    permissions:
      contents: read
      pull-requests: write
    uses: ./.github/workflows/bot_style.yml
    secrets:
      HF_BOT_STYLE_APP_ID: ${{ secrets.HF_BOT_STYLE_APP_ID }}
      HF_BOT_STYLE_SECRET_PEM: ${{ secrets.HF_BOT_STYLE_SECRET_PEM }}

  review:
    needs: authorize
    if: |
      needs.authorize.outputs.subcommand == 'review' &&
      needs.authorize.outputs.is_authorized == 'true'
    permissions:
      contents: read
    uses: ./.github/workflows/bot_review.yml
    secrets:
      SERGE_WEBHOOK_SECRET: ${{ secrets.SERGE_WEBHOOK_SECRET }}
      SERGE_INSTALLATION_ID: ${{ secrets.SERGE_INSTALLATION_ID }}

  pytest:
    needs: authorize
    if: |
      needs.authorize.outputs.subcommand == 'pytest' &&
      needs.authorize.outputs.is_authorized == 'true' &&
      github.event_name == 'issue_comment'
    permissions:
      contents: read
      pull-requests: write
    uses: ./.github/workflows/bot_pytest.yml
    with:
      pytest_args: ${{ needs.authorize.outputs.pytest_args }}