task-category-auto-labeling.yml

name: task category auto labeling

on:
  pull_request:
    branches:
      - main

permissions:
  pull-requests: write

jobs:
  pr-title-auto-labeling:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3

      - name: check pr title and auto labeling
        uses: actions/github-script@v6
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const pull_number = context.issue.number
            const owner = context.repo.owner
            const repo = context.repo.repo
            
            const { data: pull } = await github.rest.pulls.get({
                owner,
                repo,
                pull_number,
            })
            
            const prefix_pattern = /^\[(feature|refactor|test|fix|style|etc)\]/
            const labels = pull.labels.map( it => it.name )

            if (!prefix_pattern.test(pull.title)) {
              core.setFailed('PR 이름이 규칙에 맞지 않습니다.')
              return 
            }

            const end_index = pull.title.indexOf("]")
            const category_name = pull.title.substring(1, end_index)

            if (labels.includes(category_name)) {
              return // 이미 라벨이 붙어있음
            }
          
            labels.push(category_name)
            await github.rest.issues.addLabels({
                owner,
                repo,
                issue_number: pull_number,
                labels
            })