Refactor code structure and remove redundant changes

src-old/lib/slugUtils.ts

@@ -0,0 +1,82 @@
+import { supabase } from '@/lib/supabaseClient';
+import { handleError } from './errorHandler';
+
+/**
+ * Generate a URL-safe slug from a name
+ * This is the canonical slug generation function used throughout the app
+ */
+export function generateSlugFromName(name: string): string {
+  if (!name) return '';
+  
+  return name
+    .toLowerCase()
+    .replace(/[^a-z0-9\s-]/g, '') // Remove non-alphanumeric except spaces and hyphens
+    .replace(/\s+/g, '-')          // Replace spaces with hyphens
+    .replace(/-+/g, '-')           // Replace multiple hyphens with single hyphen
+    .replace(/^-+|-+$/g, '')       // Remove leading/trailing hyphens
+    .trim();
+}
+
+/**
+ * Validate that a user has permission to edit slugs
+ * Only moderators should be able to manually edit slugs
+ */
+export function canEditSlug(isModerator: boolean): boolean {
+  return isModerator;
+}
+
+/**
+ * Ensure slug is unique by checking database and appending number if needed
+ */
+export async function ensureUniqueSlug(
+  baseSlug: string,
+  tableName: 'parks' | 'rides' | 'companies' | 'ride_models',
+  excludeId?: string
+): Promise<string> {
+  let slug = baseSlug;
+  let counter = 1;
+
+  while (true) {
+    // Check if slug exists
+    let query = supabase
+      .from(tableName)
+      .select('id')
+      .eq('slug', slug);
+
+    // Exclude current record when editing
+    if (excludeId) {
+      query = query.neq('id', excludeId);
+    }
+
+    const { data, error } = await query.limit(1);
+
+    if (error) {
+      handleError(error, {
+        action: 'Check Slug Uniqueness',
+        metadata: { tableName, slug }
+      });
+      throw error;
+    }
+
+    // If no match found, slug is unique
+    if (!data || data.length === 0) {
+      return slug;
+    }
+
+    // Append counter and try again
+    counter++;
+    slug = `${baseSlug}-${counter}`;
+  }
+}
+
+/**
+ * Generate and ensure unique slug in one operation
+ */
+export async function generateUniqueSlug(
+  name: string,
+  tableName: 'parks' | 'rides' | 'companies' | 'ride_models',
+  excludeId?: string
+): Promise<string> {
+  const baseSlug = generateSlugFromName(name);
+  return ensureUniqueSlug(baseSlug, tableName, excludeId);
+}