feat(filters): support multiple values

src/features/GetFonts/lib/mapper/mapManagerToParams.ts

@@ -4,8 +4,7 @@ import type { FilterManager } from '../filterManager/filterManager.svelte';
 /**
  * Maps filter manager to proxy API parameters.
  *
- * Transforms UI filter state into proxy API query parameters.
- * Handles conversion from filter groups to API-specific parameters.
+ * Updated to support multiple filter values (arrays)
  *
  * @param manager - Filter manager instance with reactive state
  * @returns - Partial proxy API parameters ready for API call
@@ -15,13 +14,18 @@ import type { FilterManager } from '../filterManager/filterManager.svelte';
  * // Example filter manager state:
  * // {
  * //   queryValue: 'roboto',
- * //   providers: ['google'],
- * //   categories: ['sans-serif'],
+ * //   providers: ['google', 'fontshare'],
+ * //   categories: ['sans-serif', 'serif'],
  * //   subsets: ['latin']
  * // }
  *
  * const params = mapManagerToParams(manager);
- * // Returns: { provider: 'google', category: 'sans-serif', subset: 'latin', q: 'roboto' }
+ * // Returns: {
+ * //   providers: ['google', 'fontshare'],
+ * //   categories: ['sans-serif', 'serif'],
+ * //   subsets: ['latin'],
+ * //   q: 'roboto'
+ * // }
  * ```
  */
 export function mapManagerToParams(manager: FilterManager): Partial<ProxyFontsParams> {
@@ -33,22 +37,17 @@ export function mapManagerToParams(manager: FilterManager): Partial<ProxyFontsPa
         // Search query (debounced)
         q: manager.debouncedQueryValue || undefined,
 
-        // Provider filter (single value - proxy API doesn't support array)
-        // Use first provider if multiple selected, or undefined if none/all selected
-        provider: providers && providers.length === 1
-            ? (providers[0] as 'google' | 'fontshare')
+        // NEW: Support arrays - send all selected values
+        providers: providers && providers.length > 0
+            ? providers as string[]
             : undefined,
 
-        // Category filter (single value - proxy API doesn't support array)
-        // Use first category if multiple selected, or undefined if none/all selected
-        category: categories && categories.length === 1
-            ? (categories[0] as ProxyFontsParams['category'])
+        categories: categories && categories.length > 0
+            ? categories as string[]
             : undefined,
 
-        // Subset filter (single value - proxy API doesn't support array)
-        // Use first subset if multiple selected, or undefined if none/all selected
-        subset: subsets && subsets.length === 1
-            ? (subsets[0] as ProxyFontsParams['subset'])
+        subsets: subsets && subsets.length > 0
+            ? subsets as string[]
             : undefined,
     };
 }