|
| 1 | +name: Pull Request Size Labeler |
| 2 | + |
| 3 | +on: |
| 4 | + pull_request_target: |
| 5 | + types: [opened, synchronize, reopened] |
| 6 | + |
| 7 | +permissions: |
| 8 | + contents: read |
| 9 | + pull-requests: write |
| 10 | + issues: write |
| 11 | + |
| 12 | +jobs: |
| 13 | + size-label: |
| 14 | + name: Label PR by size |
| 15 | + runs-on: ubuntu-latest |
| 16 | + |
| 17 | + steps: |
| 18 | + - name: Label pull request size |
| 19 | + uses: actions/github-script@v7 |
| 20 | + with: |
| 21 | + script: | |
| 22 | + const pr = context.payload.pull_request; |
| 23 | + const owner = context.repo.owner; |
| 24 | + const repo = context.repo.repo; |
| 25 | + const issue_number = pr.number; |
| 26 | +
|
| 27 | + const files = await github.paginate(github.rest.pulls.listFiles, { |
| 28 | + owner, |
| 29 | + repo, |
| 30 | + pull_number: issue_number, |
| 31 | + per_page: 100, |
| 32 | + }); |
| 33 | +
|
| 34 | + const total = files.reduce((sum, f) => sum + f.additions + f.deletions, 0); |
| 35 | +
|
| 36 | + let label; |
| 37 | + if (total <= 50) label = 'size/xs'; |
| 38 | + else if (total <= 200) label = 'size/s'; |
| 39 | + else if (total <= 400) label = 'size/m'; |
| 40 | + else if (total <= 800) label = 'size/l'; |
| 41 | + else label = 'size/xl'; |
| 42 | +
|
| 43 | + const palette = { |
| 44 | + 'size/xs': '0e8a16', |
| 45 | + 'size/s': '6cc644', |
| 46 | + 'size/m': 'fbca04', |
| 47 | + 'size/l': 'f9d0c4', |
| 48 | + 'size/xl': 'b60205', |
| 49 | + }; |
| 50 | +
|
| 51 | + const existingLabels = await github.paginate(github.rest.issues.listLabelsForRepo, { |
| 52 | + owner, |
| 53 | + repo, |
| 54 | + per_page: 100, |
| 55 | + }); |
| 56 | +
|
| 57 | + const existingNames = new Set(existingLabels.map((l) => l.name)); |
| 58 | +
|
| 59 | + for (const [name, color] of Object.entries(palette)) { |
| 60 | + if (!existingNames.has(name)) { |
| 61 | + await github.rest.issues.createLabel({ |
| 62 | + owner, |
| 63 | + repo, |
| 64 | + name, |
| 65 | + color, |
| 66 | + description: 'Automatically assigned pull request size label', |
| 67 | + }); |
| 68 | + } |
| 69 | + } |
| 70 | +
|
| 71 | + const currentIssueLabels = await github.paginate(github.rest.issues.listLabelsOnIssue, { |
| 72 | + owner, |
| 73 | + repo, |
| 74 | + issue_number, |
| 75 | + per_page: 100, |
| 76 | + }); |
| 77 | +
|
| 78 | + const sizeLabels = currentIssueLabels |
| 79 | + .map((l) => l.name) |
| 80 | + .filter((name) => name.startsWith('size/')); |
| 81 | +
|
| 82 | + for (const oldLabel of sizeLabels) { |
| 83 | + if (oldLabel !== label) { |
| 84 | + await github.rest.issues.removeLabel({ |
| 85 | + owner, |
| 86 | + repo, |
| 87 | + issue_number, |
| 88 | + name: oldLabel, |
| 89 | + }); |
| 90 | + } |
| 91 | + } |
| 92 | +
|
| 93 | + if (!sizeLabels.includes(label)) { |
| 94 | + await github.rest.issues.addLabels({ |
| 95 | + owner, |
| 96 | + repo, |
| 97 | + issue_number, |
| 98 | + labels: [label], |
| 99 | + }); |
| 100 | + } |
| 101 | +
|
| 102 | + core.info(`PR #${issue_number} changed lines: ${total}, assigned label: ${label}`); |
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