feat: Implement server-side loading for exchange rates with authentication and error handling

frontend/src/routes/dashboard/general_catalogs/exchange-rate/+page.server.ts

@@ -0,0 +1,36 @@
+import type { PageServerLoad } from './$types';
+import { getAuthTokens, authenticatedFetch } from '$lib/server/api';
+
+export const load: PageServerLoad = async ({ cookies, fetch, url, parent }) => {
+    await parent();
+    const { accessToken } = getAuthTokens(cookies);
+
+    if (!accessToken) {
+        return { error: 'No authenticated', exchangeRates: { items: [], total: 0, page: 1, page_size: 50, pages: 0 } };
+    }
+
+    try {
+        const page = Number(url.searchParams.get('page')) || 1;
+        const pageSize = Number(url.searchParams.get('pageSize')) || 50;
+        const filters: Record<string, string> = {};
+        const date = url.searchParams.get('date');
+        const localCurrency = url.searchParams.get('local_currency');
+        const foreignCurrency = url.searchParams.get('foreign_currency');
+
+        if (date) filters.date = date;
+        if (localCurrency) filters.local_currency = localCurrency;
+        if (foreignCurrency) filters.foreign_currency = foreignCurrency;
+
+        const queryParams = new URLSearchParams({ page: page.toString(), page_size: pageSize.toString(), ...filters });
+        const response = await authenticatedFetch(`v1/a76/exchange-rate?${queryParams.toString()}`, { method: 'GET' }, cookies, fetch);
+
+        if (!response.ok) {
+            return { error: 'Failed to load', exchangeRates: { items: [], total: 0, page, page_size: pageSize, pages: 0 } };
+        }
+
+        return { exchangeRates: await response.json() };
+    } catch (error) {
+        console.error('Error loading exchange rates:', error);
+        return { error: 'Error loading', exchangeRates: { items: [], total: 0, page: 1, page_size: 50, pages: 0 } };
+    }
+};

frontend/src/routes/dashboard/general_catalogs/exchange-rate/+page.svelte

@@ -13,9 +13,11 @@
 	import { getExchangeRates } from '$lib/api/dashboard/a76/general_catalogs/exchange-rate';
 	import { companyStore } from '$lib/stores/company.svelte';
 
-	let allItems = $state<ExchangeRate[]>([]);
+	let { data } = $props();
+
+	let allItems = $state<ExchangeRate[]>(data.exchangeRates?.items || []);
 	let loading = $state(false);
-	let error = $state<string | null>(null);
+	let error = $state<string | null>(data.error || null);
 	let currentPage = $state(1);
 	const pageSize = 50;
 
@@ -97,9 +99,9 @@
 			const response = await getExchangeRates(companyId, filters);
 
 			if (page === 1) {
-				allItems = response.data.items;
+				allItems = response.items;
 			} else {
-				allItems = [...allItems, ...response.data.items];
+				allItems = [...allItems, ...response.items];
 			}
 
 			currentPage = page;