85 lines
2.9 KiB
TypeScript
85 lines
2.9 KiB
TypeScript
import type { NextRequest } from "next/server";
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import { NextResponse } from "next/server";
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import { BookService } from "@/lib/services/book.service";
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import { ERROR_CODES } from "@/constants/errorCodes";
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import { getErrorMessage } from "@/utils/errors";
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import { AppError } from "@/utils/errors";
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import logger from "@/lib/logger";
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import { requestDeduplicationService } from "@/lib/services/request-deduplication.service";
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export const dynamic = "force-dynamic";
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export async function GET(
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request: NextRequest,
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{ params }: { params: Promise<{ bookId: string; pageNumber: string }> }
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) {
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try {
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const { bookId: bookIdParam, pageNumber: pageNumberParam } = await params;
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const pageNumber: number = parseInt(pageNumberParam);
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if (isNaN(pageNumber) || pageNumber < 0) {
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return NextResponse.json(
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{
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error: {
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code: ERROR_CODES.IMAGE.FETCH_ERROR,
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name: "Image fetch error",
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message: getErrorMessage(ERROR_CODES.IMAGE.FETCH_ERROR),
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},
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},
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{ status: 400 }
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);
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}
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// Utiliser la déduplication pour éviter les requêtes dupliquées vers Komga
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// Si plusieurs clients demandent la même page simultanément, une seule requête est faite
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// On lit le buffer et les headers dans la déduplication pour pouvoir les partager
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const deduplicationKey = `book-page:${bookIdParam}:${pageNumber}`;
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const { buffer, contentType } = await requestDeduplicationService.deduplicate(
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deduplicationKey,
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async () => {
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const response = await BookService.getPage(bookIdParam, pageNumber);
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const buffer = await response.arrayBuffer();
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const contentType = response.headers.get("Content-Type") || "image/jpeg";
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// Retourner le buffer et contentType pour que chaque requête puisse créer sa propre réponse
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return { buffer, contentType };
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}
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);
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// Cloner le buffer pour cette requête pour éviter tout partage de référence
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const clonedBuffer = buffer.slice(0);
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const headers = new Headers();
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headers.set("Content-Type", contentType);
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headers.set("Cache-Control", "public, max-age=31536000"); // Cache for 1 year
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return new NextResponse(clonedBuffer, {
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status: 200,
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headers,
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});
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} catch (error) {
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logger.error({ err: error }, "Erreur lors de la récupération de la page:");
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if (error instanceof AppError) {
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return NextResponse.json(
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{
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error: {
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code: error.code,
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name: "Image fetch error",
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message: getErrorMessage(error.code),
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},
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},
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{ status: 500 }
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);
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}
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return NextResponse.json(
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{
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error: {
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code: ERROR_CODES.IMAGE.FETCH_ERROR,
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name: "Image fetch error",
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message: getErrorMessage(ERROR_CODES.IMAGE.FETCH_ERROR),
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},
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},
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{ status: 500 }
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);
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}
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}
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