msgspec-ext/.github/workflows/labeler.yml at e16a61a713d3f14a4c956cd38c64d07ede76048c · msgflux/msgspec-ext · GitHub

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name: Label PRs

on:
  pull_request:
    types: [opened, edited, synchronize]

permissions:
  contents: read
  pull-requests: write

jobs:
  label:
    # Disabled: fails on fork PRs due to token permissions
    if: false
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Label PR based on files
        uses: actions/labeler@v6
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          configuration-path: .github/labeler.yml

      - name: Label PR based on size
        uses: actions/github-script@v8
        with:
          script: |
            const pr = context.payload.pull_request;
            const additions = pr.additions;
            const deletions = pr.deletions;
            const totalChanges = additions + deletions;

            // Remove existing size labels
            const existingLabels = pr.labels.map(label => label.name);
            const sizeLabels = ['size/XS', 'size/S', 'size/M', 'size/L', 'size/XL'];
            const labelsToRemove = existingLabels.filter(label => sizeLabels.includes(label));

            for (const label of labelsToRemove) {
              await github.rest.issues.removeLabel({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: pr.number,
                name: label
              });
            }

            // Determine size label
            let sizeLabel;
            if (totalChanges < 10) {
              sizeLabel = 'size/XS';
            } else if (totalChanges < 50) {
              sizeLabel = 'size/S';
            } else if (totalChanges < 200) {
              sizeLabel = 'size/M';
            } else if (totalChanges < 500) {
              sizeLabel = 'size/L';
            } else {
              sizeLabel = 'size/XL';
            }

            // Add new size label
            await github.rest.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: pr.number,
              labels: [sizeLabel]
            });

            core.info(`Added label: ${sizeLabel} (${totalChanges} changes)`);

      - name: Label PR based on title
        uses: actions/github-script@v8
        with:
          script: |
            const pr = context.payload.pull_request;
            const title = pr.title.toLowerCase();

            const labels = [];

            // Conventional commit prefixes (case-insensitive with [] or () brackets)
            const patterns = {
              feat: /^(feat|FEAT)[\[:(]/,
              fix: /^(fix|FIX)[\[:(]/,
              docs: /^(docs|DOCS)[\[:(]/,
              test: /^(test|TEST|tests|TESTS)[\[:(]/,
              chore: /^(chore|CHORE)[\[:(]/,
              refactor: /^(refactor|REFACTOR)[\[:(]/,
              perf: /^(perf|PERF)[\[:(]/,
              style: /^(style|STYLE)[\[:(]/,
              ci: /^(ci|CI)[\[:(]/,
            };

            if (patterns.feat.test(pr.title)) {
              labels.push('enhancement');
            } else if (patterns.fix.test(pr.title)) {
              labels.push('bug');
            } else if (patterns.docs.test(pr.title)) {
              labels.push('documentation');
            } else if (patterns.test.test(pr.title)) {
              labels.push('tests');
            } else if (patterns.chore.test(pr.title)) {
              labels.push('maintenance');
            } else if (patterns.refactor.test(pr.title)) {
              labels.push('refactor');
            } else if (patterns.perf.test(pr.title)) {
              labels.push('performance');
            } else if (patterns.ci.test(pr.title)) {
              labels.push('ci');
            }

            // Keywords
            if (title.includes('breaking') || title.includes('breaking change')) {
              labels.push('breaking-change');
            }

            if (title.includes('security')) {
              labels.push('security');
            }

            // Add labels
            if (labels.length > 0) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: pr.number,
                labels: labels
              });

              core.info(`Added labels: ${labels.join(', ')}`);
            }