name: Test action build

on:
  workflow_call:

jobs:
  test-build:
    name: Build the action and run TypeScript tests
    runs-on: ubuntu-latest
    steps:
      - name: Checkout the action
        uses: actions/checkout@v4
        
      - name: Setup Node.js 20.x
        uses: actions/setup-node@v4
        with:
          node-version: 20
          
      - name: Install npm-cli-login
        run: npm install -g npm-cli-login
      - name: Login to GitHub npm registry
        # Both username and email address are irrelevant here, but they must be
        # specified because otherwise npm-cli-login fails.
        run: |
          npm-cli-login -s @actions-rs -r https://npm.pkg.github.com \
            -u does_not_matter -p ${{ secrets.GITHUB_TOKEN }} -e does_not_m@ter.com
            
      - name: Install dependencies
        run: npm ci
      - name: Rebuild the action and run tests
        run: npm run all
        
      - name: Compare the expected and actual src/ directories
        run: |
          if [ "$(git diff src/ | wc -l)" -gt "0" ]; then
            echo "Source files are not properly formatted!"
            exit 1
          fi
        id: diff_src
        
      - name: Upload the expected version of src/ in case of failure
        uses: actions/upload-artifact@v4
        if: ${{ failure() && steps.diff_src.conclusion == 'failure' }}
        with:
          name: expected-src
          path: src/
          
      - name: Compare the expected and actual dist/ directories
        run: |
          if [ "$(git diff dist/ | wc -l)" -gt "0" ]; then
            echo "Built sources do not match the content of the dist/ directory!"
            exit 1
          fi
        id: diff_dist
        
      - name: Upload the expected version of dist/ in case of failure
        uses: actions/upload-artifact@v4
        if: ${{ failure() && steps.diff_dist.conclusion == 'failure' }}
        with:
          name: expected-dist
          path: dist/