songs page refactor schema

src/routes/songs/schema.ts

@@ -0,0 +1,38 @@
+import { z } from "zod";
+import { SongTypeMap } from "$lib/utils/amq";
+
+// Base schema for raw URL search parameters as strings
+const BaseSearchParamsSchema = z.object({
+	q: z.string().optional(),
+	artist: z.string().optional(),
+	anime: z.string().optional(),
+	gpm: z.string().optional(),
+	gpx: z.string().optional(),
+	cat: z.string().optional(),
+});
+
+// Schema for +page.ts load function (parses comma-separated types into number array)
+export const LoadSearchParamsSchema = BaseSearchParamsSchema.extend({
+	type: z
+		.string()
+		.optional()
+		.transform((s) => {
+			if (!s) return undefined;
+			return s
+				.split(",")
+				.map((t) => SongTypeMap[t.trim().toUpperCase()])
+				.filter((n) => n !== undefined);
+		}),
+}).strict();
+
+// Schema for +page.svelte useSearchParams (handles 'type' as an array of strings from URL)
+export const SvelteSearchParamsSchema = BaseSearchParamsSchema.extend({
+	type: z.array(z.string()).default([]),
+}).strict();
+
+// Define the type for the Svelte form, which will have default values
+export type SvelteSearchForm = z.infer<typeof SvelteSearchParamsSchema> & {
+	gpm: string; // To allow empty string in form input
+	gpx: string; // To allow empty string in form input
+	cat: string; // To allow empty string in form input
+};