validate static method

List<ValidationIssue> validate(JsonLdSchema schema)

Validate a JSON-LD schema and return a list of issues found.

Implementation

static List<ValidationIssue> validate(JsonLdSchema schema) {
  final issues = <ValidationIssue>[];
  final map = schema.toMap();

  // Check @type exists
  if (!map.containsKey('@type')) {
    issues.add(
      const ValidationIssue(
        severity: IssueSeverity.error,
        message: 'Missing @type — every schema must have a @type field',
        field: '@type',
      ),
    );
    return issues; // Can't validate further without type
  }

  final type = map['@type'] as String;

  // Type-specific validation
  switch (type) {
    case 'Product':
      _validateProduct(map, issues);
      break;
    case 'Article':
    case 'NewsArticle':
    case 'BlogPosting':
    case 'TechArticle':
      _validateArticle(map, issues);
      break;
    case 'Organization':
      _validateOrganization(map, issues);
      break;
    case 'FAQPage':
      _validateFaq(map, issues);
      break;
    case 'BreadcrumbList':
      _validateBreadcrumb(map, issues);
      break;
    case 'LocalBusiness':
    case 'Restaurant':
    case 'Store':
      _validateLocalBusiness(map, issues);
      break;
    case 'Event':
      _validateEvent(map, issues);
      break;
  }

  // Validate JSON output
  try {
    final jsonStr = schema.toJsonLd();
    jsonDecode(jsonStr); // Make sure it's valid JSON
  } catch (e) {
    issues.add(
      ValidationIssue(
        severity: IssueSeverity.error,
        message: 'Generated JSON-LD is not valid JSON: $e',
      ),
    );
  }

  return issues;
}