name: CI

on:
  push:
    branches: [ main, copilot/** ]
  pull_request:
    branches: [ main ]

jobs:
  lint-test-build:
    runs-on: ubuntu-latest
    
    strategy:
      matrix:
        node-version: [18.x, 20.x]
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      
    - name: Setup Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v4
      with:
        node-version: ${{ matrix.node-version }}
        cache: 'npm'
        
    - name: Install dependencies
      run: npm ci
      
    - name: Run ESLint
      run: npm run lint
      
    - name: Check formatting
      run: npm run format:check
      
    - name: Run tests
      run: npm run test:run
      
    - name: Build project
      run: npm run build
      
    - name: Upload build artifacts
      if: matrix.node-version == '20.x'
      uses: actions/upload-artifact@v4
      with:
        name: build-artifacts
        path: dist/
        retention-days: 7