Add digital catalog with shareable flipbook and ktg.montzar.ir deploy files.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/pdf.ts

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+import * as pdfjs from "pdfjs-dist";
+import pdfWorker from "pdfjs-dist/build/pdf.worker.min.mjs?url";
+import { LIMITS, fileTooLargeMessage, tooManyPagesMessage } from "@shared/types";
+
+pdfjs.GlobalWorkerOptions.workerSrc = pdfWorker;
+
+function canvasToJpeg(canvas: HTMLCanvasElement): Promise<Blob> {
+  return new Promise((resolve, reject) => {
+    canvas.toBlob(
+      (blob) => {
+        if (!blob) reject(new Error("تبدیل تصویر ناموفق بود"));
+        else resolve(blob);
+      },
+      "image/jpeg",
+      LIMITS.jpegQuality / 100,
+    );
+  });
+}
+
+export async function renderPdfToJpegs(
+  file: File,
+  onProgress?: (done: number, total: number) => void,
+): Promise<Blob[]> {
+  if (file.size > LIMITS.maxFileBytes) {
+    throw new Error(fileTooLargeMessage(file.size));
+  }
+
+  const data = new Uint8Array(await file.arrayBuffer());
+  let pdf;
+  try {
+    pdf = await pdfjs.getDocument({ data }).promise;
+  } catch (err) {
+    const name =
+      err && typeof err === "object" && "name" in err
+        ? String((err as { name: string }).name)
+        : "";
+    if (name === "PasswordException") {
+      throw new Error("این PDF رمزگذاری شده است و قابل تبدیل نیست.");
+    }
+    if (name === "InvalidPDFException") {
+      throw new Error("این فایل یک PDF معتبر نیست.");
+    }
+    throw err;
+  }
+  if (pdf.numPages < 1) {
+    throw new Error("این PDF صفحه‌ای برای نمایش ندارد.");
+  }
+  if (pdf.numPages > LIMITS.maxPages) {
+    throw new Error(tooManyPagesMessage(pdf.numPages));
+  }
+
+  const pages: Blob[] = [];
+  onProgress?.(0, pdf.numPages);
+  for (let i = 1; i <= pdf.numPages; i++) {
+    const page = await pdf.getPage(i);
+    const base = page.getViewport({ scale: 1 });
+    const scale = Math.min(LIMITS.maxPageWidth / base.width, 2);
+    const viewport = page.getViewport({ scale });
+    const canvas = document.createElement("canvas");
+    canvas.width = Math.floor(viewport.width);
+    canvas.height = Math.floor(viewport.height);
+    const ctx = canvas.getContext("2d");
+    if (!ctx) throw new Error("تبدیل تصویر ناموفق بود");
+    const renderTask = page.render({
+      canvasContext: ctx,
+      canvas,
+      viewport,
+    } as Parameters<typeof page.render>[0]);
+    await renderTask.promise;
+    pages.push(await canvasToJpeg(canvas));
+    onProgress?.(i, pdf.numPages);
+  }
+  return pages;
+}