auto-close-issue.yml

name: Auto Close Issue on PR Merge

on:
  pull_request_target:
    types: [closed]
    branches: 
      - 'dev-fe'
      - 'dev-be'

permissions:
  contents: read
  issues: write
  pull-requests: write

jobs:
  close-issue:
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Close linked issue
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          BRANCH_NAME: ${{ github.event.pull_request.head.ref }}
          TARGET_BRANCH: ${{ github.event.pull_request.base.ref }}
        run: |
          # feature-{fe|be}-#123 형식에서 이슈 번호 추출
          if [[ $BRANCH_NAME =~ feature-(fe|be)-#([0-9]+)$ ]]; then
            ISSUE_NUMBER="${BASH_REMATCH[2]}"
            echo "Found issue number: $ISSUE_NUMBER"
            echo "Closing issue #$ISSUE_NUMBER"
            gh issue close "$ISSUE_NUMBER" --comment "Automatically closed by PR #$PR_NUMBER merge to $TARGET_BRANCH"
          else
            echo "Branch name '$BRANCH_NAME' does not match expected pattern"
            exit 0
          fi