validator.yml

name: Validate Application PR

on:
  pull_request:
    branches:
      - apply
    types: [opened, synchronize, reopened, edited]

jobs:
  validate-pr:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Validate PR title format
        id: validate-title
        run: |
          PR_TITLE="${{ github.event.pull_request.title }}"
          PATTERN="^Application for OpenStack by .+$"
          
          if [[ ! "$PR_TITLE" =~ $PATTERN ]]; then
            echo "❌ PR title does not match the required format"
            echo "Expected format: 'Application for OpenStack by [username]'"
            echo "Current title: '$PR_TITLE'"
            exit 1
          fi
          
          echo "✅ PR title format is valid"
          echo "title_valid=true" >> $GITHUB_OUTPUT

      - name: Get changed files
        id: changed-files
        run: |
          # Get the list of changed files in the PR
          CHANGED_FILES=$(git diff --name-only origin/${{ github.base_ref }}...HEAD)
          
          # Count the number of changed files
          FILE_COUNT=$(echo "$CHANGED_FILES" | grep -v '^$' | wc -l | tr -d ' ')
          
          echo "Changed files:"
          echo "$CHANGED_FILES"
          echo "file_count=$FILE_COUNT" >> $GITHUB_OUTPUT
          echo "changed_files<<EOF" >> $GITHUB_OUTPUT
          echo "$CHANGED_FILES" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Validate only members.json is changed
        run: |
          CHANGED_FILES="${{ steps.changed-files.outputs.changed_files }}"
          FILE_COUNT="${{ steps.changed-files.outputs.file_count }}"
          
          if [ "$FILE_COUNT" -ne 1 ]; then
            echo "❌ Expected exactly 1 file to be changed, but found $FILE_COUNT file(s)"
            echo "Changed files:"
            echo "$CHANGED_FILES"
            exit 1
          fi
          
          if [ "$CHANGED_FILES" != "members.json" ]; then
            echo "❌ Expected only 'members.json' to be changed, but found: '$CHANGED_FILES'"
            exit 1
          fi
          
          echo "✅ Only members.json is changed"

      - name: PR validation summary
        run: |
          echo "## ✅ PR Validation Passed" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "- ✅ PR title format is correct" >> $GITHUB_STEP_SUMMARY
          echo "- ✅ Only members.json is changed" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**PR Title:** ${{ github.event.pull_request.title }}" >> $GITHUB_STEP_SUMMARY