---
# vi: ts=2 sw=2 et:
# SPDX-License-Identifier: LGPL-2.1-or-later
#
name: "Pull Request Labeler"

on:
  pull_request_target:
    types: [opened, synchronize, reopened, ready_for_review, closed]
    paths-ignore:
      - '.github/labeler.yml'
      - '.github/workflows/labeler.yml'
  # Allow testing changes made to the labeler configuration
  pull_request:
    paths:
      - '.github/labeler.yml'
      - '.github/workflows/labeler.yml'
  issue_comment:
    types: [created]

permissions:
  contents: read

jobs:
  triage:
    if: github.repository == 'systemd/systemd'
    runs-on: ubuntu-24.04
    permissions:
      pull-requests: write

    steps:
    - name: Repository checkout
      uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
      if: github.event_name == 'pull_request'

    - name: Label PR based on policy in labeler.yml
      uses: actions/labeler@8558fd74291d67161a8a78ce36a881fa63b766a9
      if: startsWith(github.event_name, 'pull_request') && github.base_ref == 'main' && github.event.action != 'closed'
      with:
        repo-token: "${{ secrets.GITHUB_TOKEN }}"
        configuration-path: .github/labeler.yml
        sync-labels: false

    - name: Set or remove labels based on systemd development workflow
      uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
      if: startsWith(github.event_name, 'pull_request') && github.event.action != 'closed' && !github.event.pull_request.draft
      with:
        script: |
          response = await github.rest.issues.listLabelsOnIssue({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
          });

          original = new Set(response.data.map(l => l.name));
          labels = new Set(original);

          good_to_merge = new Set([
            "good-to-merge/waiting-for-ci 👍",
            "good-to-merge/after-next-release",
            "good-to-merge/with-minor-suggestions",
            "good-to-merge/waiting-for-reporter-feedback 👍",
          ]);

          if (Array.from(labels).filter(l => good_to_merge.has(l)).length == 0) {
            labels.add("please-review");
          }

          for (const label of ["reviewed/needs-rework 🔨",
                               "ci-fails/needs-rework 🔥",
                               "ci-failure-appears-unrelated",
                               "needs-rebase"]) {
            labels.delete(label);
          }

          if (labels.size != original.size || Array.from(labels).some(l => !original.has(l))) {
            await github.rest.issues.setLabels({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: Array.from(labels),
            });
          }

    - name: Add please-review label on command in issue comment
      uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
      if: github.event_name == 'issue_comment' && github.event.issue.pull_request && startsWith(github.event.comment.body, '/please-review')
      with:
        script: |
          await github.rest.issues.addLabels({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            labels: ["please-review"]
          })

    - name: Remove specific labels when PR is closed or merged
      uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
      if: startsWith(github.event_name, 'pull_request') && github.event.action == 'closed'
      with:
        script: |
          response = await github.rest.issues.listLabelsOnIssue({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
          });

          original = new Set(response.data.map(l => l.name));
          labels = new Set(original);

          for (const label of ["please-review",
                               "reviewed/needs-rework 🔨",
                               "ci-fails/needs-rework 🔥",
                               "needs-rebase",
                               "good-to-merge/waiting-for-ci 👍",
                               "good-to-merge/after-next-release",
                               "good-to-merge/with-minor-suggestions",
                               "good-to-merge/waiting-for-reporter-feedback 👍",
                               "needs-discussion 🤔",
                               "needs-reporter-feedback ❓",
                               "dont-merge 💣",
                               "squash-on-merge",
                               "quick-review 🏃‍♂️"]) {
            labels.delete(label);
          }

          if (labels.size != original.size || Array.from(labels).some(l => !original.has(l))) {
            await github.rest.issues.setLabels({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: Array.from(labels),
            });
          }
