name: CI

on:
  pull_request:
    branches:
      - main

jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Validate HTML
        run: |
          # Check index.html exists and is valid-ish
          test -f index.html || { echo "ERROR: index.html missing"; exit 1; }
          # Check for unclosed tags (basic)
          python3 -c "
          import html.parser, sys
          class V(html.parser.HTMLParser):
              def __init__(self):
                  super().__init__()
                  self.errors = []
              def handle_starttag(self, tag, attrs): pass
              def handle_endtag(self, tag): pass
          v = V()
          try:
              v.feed(open('index.html').read())
              print('HTML: OK')
          except Exception as e:
              print(f'HTML: FAIL - {e}')
              sys.exit(1)
          "

      - name: Validate JavaScript
        run: |
          # Syntax check all JS files
          FAIL=0
          for f in $(find . -name '*.js' -not -path './node_modules/*' -not -name 'sw.js'); do
            if ! node --check "$f" 2>/dev/null; then
              echo "FAIL: $f"
              FAIL=1
            else
              echo "OK: $f"
            fi
          done
          exit $FAIL

      - name: Validate JSON
        run: |
          # Check all JSON files parse
          FAIL=0
          for f in $(find . -name '*.json' -not -path './node_modules/*'); do
            if ! python3 -c "import json; json.load(open('$f'))"; then
              echo "FAIL: $f"
              FAIL=1
            else
              echo "OK: $f"
            fi
          done
          exit $FAIL

      - name: Check file size budget
        run: |
          # Performance budget: no single JS file > 500KB
          FAIL=0
          for f in $(find . -name '*.js' -not -path './node_modules/*'); do
            SIZE=$(wc -c < "$f")
            if [ "$SIZE" -gt 512000 ]; then
              echo "FAIL: $f is ${SIZE} bytes (budget: 512000)"
              FAIL=1
            else
              echo "OK: $f (${SIZE} bytes)"
            fi
          done
          exit $FAIL