Refactor code structure and remove redundant changes

src-old/lib/notificationValidation.ts

@@ -0,0 +1,64 @@
+import { z } from 'zod';
+import type { NotificationPreferences } from '@/types/notifications';
+
+/**
+ * Schema for channel preferences
+ */
+export const channelPreferencesSchema = z.object({
+  in_app: z.boolean(),
+  email: z.boolean(),
+  push: z.boolean(),
+  sms: z.boolean()
+});
+
+/**
+ * Schema for workflow preferences (dynamic keys)
+ */
+export const workflowPreferencesSchema = z.record(z.string(), z.boolean());
+
+/**
+ * Schema for frequency settings
+ */
+export const frequencySettingsSchema = z.object({
+  digest: z.enum(['realtime', 'hourly', 'daily', 'weekly'] as const),
+  max_per_hour: z.number().int().min(1).max(999)
+});
+
+/**
+ * Complete notification preferences schema
+ */
+export const notificationPreferencesSchema = z.object({
+  channelPreferences: channelPreferencesSchema,
+  workflowPreferences: workflowPreferencesSchema,
+  frequencySettings: frequencySettingsSchema
+});
+
+/**
+ * Schema for subscriber data
+ */
+export const subscriberDataSchema = z.object({
+  subscriberId: z.string().uuid('Invalid subscriber ID'),
+  email: z.string().email('Invalid email').optional(),
+  firstName: z.string().max(100).optional(),
+  lastName: z.string().max(100).optional(),
+  phone: z.string().max(20).optional(),
+  avatar: z.string().url('Invalid avatar URL').optional(),
+  data: z.record(z.string(), z.any()).optional()
+});
+
+/**
+ * Default notification preferences for new users
+ */
+export const DEFAULT_NOTIFICATION_PREFERENCES: NotificationPreferences = {
+  channelPreferences: {
+    in_app: true,
+    email: true,
+    push: false,
+    sms: false
+  },
+  workflowPreferences: {},
+  frequencySettings: {
+    digest: 'daily',
+    max_per_hour: 10
+  }
+};