feat: add global Komga search autocomplete in header

src/lib/services/search.service.ts

@@ -0,0 +1,63 @@
+import type { KomgaBook, KomgaSeries } from "@/types/komga";
+import { ERROR_CODES } from "../../constants/errorCodes";
+import { AppError } from "../../utils/errors";
+import { BaseApiService } from "./base-api.service";
+
+interface SearchResponse<T> {
+  content: T[];
+}
+
+export interface GlobalSearchResult {
+  series: KomgaSeries[];
+  books: KomgaBook[];
+}
+
+export class SearchService extends BaseApiService {
+  private static readonly CACHE_TTL = 30;
+
+  static async globalSearch(query: string, limit: number = 6): Promise<GlobalSearchResult> {
+    const trimmedQuery = query.trim();
+
+    if (!trimmedQuery) {
+      return { series: [], books: [] };
+    }
+
+    const headers = { "Content-Type": "application/json" };
+    const searchBody = {
+      fullTextSearch: trimmedQuery,
+    };
+
+    try {
+      const [seriesResponse, booksResponse] = await Promise.all([
+        this.fetchFromApi<SearchResponse<KomgaSeries>>(
+          { path: "series/list", params: { page: "0", size: String(limit) } },
+          headers,
+          {
+            method: "POST",
+            body: JSON.stringify(searchBody),
+            revalidate: this.CACHE_TTL,
+          }
+        ),
+        this.fetchFromApi<SearchResponse<KomgaBook>>(
+          { path: "books/list", params: { page: "0", size: String(limit) } },
+          headers,
+          {
+            method: "POST",
+            body: JSON.stringify(searchBody),
+            revalidate: this.CACHE_TTL,
+          }
+        ),
+      ]);
+
+      return {
+        series: seriesResponse.content.filter((item) => !item.deleted),
+        books: booksResponse.content.filter((item) => !item.deleted),
+      };
+    } catch (error) {
+      if (error instanceof AppError) {
+        throw error;
+      }
+      throw new AppError(ERROR_CODES.SERIES.FETCH_ERROR, {}, error);
+    }
+  }
+}