huge refactor on web-api and web-app

apps/web-app/src/features/exchanges/utils/formatters.ts

@@ -0,0 +1,35 @@
+import { ProviderMapping } from '../types';
+
+export function formatDate(dateString: string): string {
+  return new Date(dateString).toLocaleDateString();
+}
+
+export function formatProviderMapping(mapping: ProviderMapping): string {
+  return `${mapping.provider.toLowerCase()}(${mapping.provider_exchange_code})`;
+}
+
+export function getProviderMappingColor(mapping: ProviderMapping): string {
+  return mapping.active ? 'text-green-500' : 'text-text-muted';
+}
+
+export function sortProviderMappings(mappings: ProviderMapping[]): ProviderMapping[] {
+  return [...mappings].sort((a, b) => {
+    // Active mappings first
+    if (a.active && !b.active) {
+      return -1;
+    }
+    if (!a.active && b.active) {
+      return 1;
+    }
+    
+    // Then by provider name
+    return a.provider.localeCompare(b.provider);
+  });
+}
+
+export function truncateText(text: string, maxLength: number): string {
+  if (text.length <= maxLength) {
+    return text;
+  }
+  return text.substring(0, maxLength) + '...';
+}

apps/web-app/src/features/exchanges/utils/validation.ts

@@ -0,0 +1,38 @@
+import { FormErrors } from '../types';
+
+export function validateExchangeForm(data: {
+  code: string;
+  name: string;
+  country: string;
+  currency: string;
+}): FormErrors {
+  const errors: FormErrors = {};
+
+  if (!data.code.trim()) {
+    errors.code = 'Exchange code is required';
+  } else if (data.code.length > 10) {
+    errors.code = 'Exchange code must be 10 characters or less';
+  }
+
+  if (!data.name.trim()) {
+    errors.name = 'Exchange name is required';
+  }
+
+  if (!data.country.trim()) {
+    errors.country = 'Country is required';
+  } else if (data.country.length !== 2) {
+    errors.country = 'Country must be exactly 2 characters (e.g., US, CA, GB)';
+  }
+
+  if (!data.currency.trim()) {
+    errors.currency = 'Currency is required';
+  } else if (data.currency.length !== 3) {
+    errors.currency = 'Currency must be exactly 3 characters (e.g., USD, EUR, CAD)';
+  }
+
+  return errors;
+}
+
+export function hasValidationErrors(errors: FormErrors): boolean {
+  return Object.keys(errors).length > 0;
+}