feat: ajout du service ImageService pour la gestion des images

src/lib/services/image.service.ts

@@ -0,0 +1,52 @@
+import { BaseApiService } from "./base-api.service";
+
+interface ImageResponse {
+  buffer: Buffer;
+  contentType: string | null;
+}
+
+export class ImageService extends BaseApiService {
+  static async getImage(path: string): Promise<ImageResponse> {
+    try {
+      const config = await this.getKomgaConfig();
+      const url = this.buildUrl(config, path);
+      const headers = this.getAuthHeaders(config);
+
+      // Ajout des headers pour accepter les images
+      headers.set("Accept", "image/jpeg, image/png, image/gif, image/webp, */*");
+
+      const response = await fetch(url, { headers });
+
+      if (!response.ok) {
+        throw new Error(`Erreur HTTP: ${response.status} ${response.statusText}`);
+      }
+
+      // Récupérer le type MIME de l'image
+      const contentType = response.headers.get("content-type");
+
+      // Convertir la réponse en buffer
+      const arrayBuffer = await response.arrayBuffer();
+      const buffer = Buffer.from(arrayBuffer);
+
+      return {
+        buffer,
+        contentType,
+      };
+    } catch (error) {
+      console.error("Erreur lors de la récupération de l'image:", error);
+      return this.handleError(error, "Impossible de récupérer l'image");
+    }
+  }
+
+  static getSeriesThumbnailUrl(seriesId: string): string {
+    return `/api/komga/images/series/${seriesId}/thumbnail`;
+  }
+
+  static getBookThumbnailUrl(bookId: string): string {
+    return `/api/komga/images/books/${bookId}/thumbnail`;
+  }
+
+  static getBookPageUrl(bookId: string, pageNumber: number): string {
+    return `/api/komga/books/${bookId}/pages/${pageNumber}`;
+  }
+}