fix: add missing book API methods and types (searchBooks, getBook, getGenres, getAuthors)

docs/backend/search-discovery-spec.md

@@ -69,7 +69,7 @@ Enable users to search books within the library and discover new books via filte
 - **Search bar** at top: text input with debounced `onChange` → calls API with `q` param
 - **Filter row**: genre dropdown, author dropdown, reading status dropdown
   - Genre/Author dropdowns populated from `/api/books/genres/` and `/api/books/authors/`
-  - Reading status uses static enum values
+  - Reading status uses static enum values (`READING_STATUS_OPTIONS`)
 - **Results grid**: card layout showing cover, title, author, reading status badge
 - **Empty state**: "No books found" with clear message when results are empty
 - **Loading state**: spinner/skeleton while fetching
@@ -80,6 +80,15 @@ Enable users to search books within the library and discover new books via filte
 - Back button to return to library
 - Clean, mobile-responsive layout
 
+### API Client — `frontend/src/api/books.ts`
+
+| Method | Endpoint | Returns |
+|--------|----------|---------|
+| `searchBooks(params)` | `GET /api/books/` | `{count, results: BookListItem[]}` |
+| `getBook(id)` | `GET /api/books/{id}/` | `BookDetail` |
+| `getGenres()` | `GET /api/books/genres/` | `string[]` |
+| `getAuthors()` | `GET /api/books/authors/` | `string[]` |
+
 ## Routes (Frontend)
 | Path | Component | Auth |
 |------|-----------|------|

frontend/src/api/books.ts

@@ -1,5 +1,15 @@
 import api from "./client";
-import type { ContentResponse, EBookDetail, EBookListItem, ReadingProgress, ReadingSettings, TocResponse } from "../types/book";
+import type {
+  BookDetail,
+  BookListItem,
+  BookSearchParams,
+  ContentResponse,
+  EBookDetail,
+  EBookListItem,
+  ReadingProgress,
+  ReadingSettings,
+  TocResponse,
+} from "../types/book";
 
 export const booksApi = {
   async getEBooks(): Promise<EBookListItem[]> {
@@ -12,6 +22,26 @@ export const booksApi = {
     return data;
   },
 
+  async searchBooks(params: BookSearchParams = {}): Promise<{ count: number; results: BookListItem[] }> {
+    const { data } = await api.get<{ count: number; results: BookListItem[] }>("/books/", { params });
+    return data;
+  },
+
+  async getBook(id: number): Promise<BookDetail> {
+    const { data } = await api.get<BookDetail>(`/books/${id}/`);
+    return data;
+  },
+
+  async getGenres(): Promise<string[]> {
+    const { data } = await api.get<string[]>("/books/genres/");
+    return data;
+  },
+
+  async getAuthors(): Promise<string[]> {
+    const { data } = await api.get<string[]>("/books/authors/");
+    return data;
+  },
+
   async uploadEBook(
     file: File,
     title: string,

frontend/src/types/book.ts

@@ -82,3 +82,21 @@ export interface ContentResponse {
   chapter_title: string;
   format: string;
 }
+
+export interface BookSearchParams {
+  q?: string;
+  genre?: string;
+  author?: string;
+  reading_status?: string;
+  ordering?: string;
+  page?: number;
+  page_size?: number;
+}
+
+export const READING_STATUS_OPTIONS: { value: string; label: string }[] = [
+  { value: "", label: "All Statuses" },
+  { value: "want_to_read", label: "Want to Read" },
+  { value: "reading", label: "Reading" },
+  { value: "finished", label: "Finished" },
+  { value: "dnf", label: "Did Not Finish" },
+];