# Ensure that the javascript package can be built with webpack
# Runs on any PRs that modify the javascript directory
# Also verifies that the built bundle matches the committed bundle

name: test_js

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
    paths:
      - "javascript/**"

jobs:
  build-js:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: actions/setup-node@v3
      with:
        node-version: lts/Hydrogen
    - run: npm ci
      working-directory: ./javascript
    - run: npm run build
      working-directory: ./javascript
    - run: npm run test
      working-directory: ./javascript

    # Check if the built bundle matches the committed bundle (ignoring whitespace)
    - name: Compare built bundle with committed bundle
      run: |
        # Normalize whitespace in both files for comparison
        # Remove empty lines and all whitespace, then compare
        sed '/^[[:space:]]*$/d; s/[[:space:]]//g' javascript/build/bundle.js | tr -d '\n' > /tmp/new_bundle_normalized.js
        sed '/^[[:space:]]*$/d; s/[[:space:]]//g' shap/plots/resources/bundle.js | tr -d '\n' > /tmp/committed_bundle_normalized.js

        if diff -q /tmp/new_bundle_normalized.js /tmp/committed_bundle_normalized.js > /dev/null; then
          echo "✅ Bundle matches the committed version"
        else
          echo "❌ Built bundle differs from committed version"
          echo "The bundle.js file needs to be updated."
          echo "Run: cd javascript && npm run build && cp build/bundle.js ../shap/plots/resources/bundle.js"
          exit 1
        fi