feat: Implement all 7 phases

src/lib/moderation/typeGuards.ts

@@ -0,0 +1,64 @@
+/**
+ * Type Guard Functions for Moderation Queue
+ * 
+ * Provides runtime type checking for submission item data.
+ * Enables type-safe handling of different entity types.
+ */
+
+import type {
+  SubmissionItemData,
+  ParkItemData,
+  RideItemData,
+  CompanyItemData,
+  RideModelItemData,
+  PhotoItemData,
+} from '@/types/moderation';
+
+/**
+ * Check if item data is for a park
+ */
+export function isParkItemData(data: SubmissionItemData): data is ParkItemData {
+  return 'park_type' in data && 'name' in data;
+}
+
+/**
+ * Check if item data is for a ride
+ */
+export function isRideItemData(data: SubmissionItemData): data is RideItemData {
+  return ('ride_id' in data || 'park_id' in data) && 'ride_type' in data;
+}
+
+/**
+ * Check if item data is for a company
+ */
+export function isCompanyItemData(data: SubmissionItemData): data is CompanyItemData {
+  return 'company_type' in data && !('park_type' in data) && !('ride_type' in data);
+}
+
+/**
+ * Check if item data is for a ride model
+ */
+export function isRideModelItemData(data: SubmissionItemData): data is RideModelItemData {
+  return 'model_type' in data && 'manufacturer_id' in data;
+}
+
+/**
+ * Check if item data is for a photo
+ */
+export function isPhotoItemData(data: SubmissionItemData): data is PhotoItemData {
+  return 'photo_url' in data;
+}
+
+/**
+ * Get the entity type from item data (for validation and display)
+ */
+export function getEntityTypeFromItemData(data: SubmissionItemData): string {
+  if (isParkItemData(data)) return 'park';
+  if (isRideItemData(data)) return 'ride';
+  if (isCompanyItemData(data)) {
+    return data.company_type; // 'manufacturer', 'designer', etc.
+  }
+  if (isRideModelItemData(data)) return 'ride_model';
+  if (isPhotoItemData(data)) return 'photo';
+  return 'unknown';
+}