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feat: generalized chat quiz generator with PDF and Word downloads #495

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feat: generalized chat quiz generator with PDF and Word downloads
nandani-singh15 Jun 8, 2026
fe1900b
Merge branch 'master' into feature/chat-quiz-generator
nandani-singh15 Jun 8, 2026
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174 changes: 174 additions & 0 deletions frontend/package-lock.json
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1 change: 1 addition & 0 deletions frontend/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
"axios": "^1.11.0",
"bootstrap": "^5.3.7",
"file-saver": "^2.0.5",
"jspdf": "^4.2.1",
"papaparse": "^5.5.3",
"react": "^18.3.1",
"react-bootstrap": "^2.10.10",
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40 changes: 40 additions & 0 deletions frontend/src/components/ChatPanel/MessageBubble.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ import React from "react";

import ReactMarkdown from "react-markdown";
import rehypeSanitize, { defaultSchema } from "rehype-sanitize";
import { exportQuizToPdf, exportQuizToWord } from "../../utils/quizExporter";

// Strict allowlist for AI-generated markdown content.
//
Expand Down Expand Up @@ -44,6 +45,7 @@ const MODE_BADGE = {
socratic: { label: "Socratic", bg: "rgba(139,92,246,0.15)", color: "#8B5CF6" },
eli5: { label: "Simple", bg: "rgba(34,197,94,0.15)", color: "#22C55E" },
concise: { label: "Concise", bg: "rgba(249,115,22,0.15)", color: "#F97316" },
quiz: { label: "Quiz", bg: "rgba(139,92,246,0.15)", color: "#8B5CF6" },
};

const MessageBubble = ({ msg, darkMode, onOpenSource }) => {
Expand Down Expand Up @@ -109,6 +111,44 @@ const MessageBubble = ({ msg, darkMode, onOpenSource }) => {
<span>{msg.text}</span>
)}

{msg.role === "bot" && !msg.streaming && (msg.mode === "quiz" || msg.text.includes("# Quiz") || msg.text.toLowerCase().includes("quiz:")) && (
<div style={{ marginTop: "14px", display: "flex", gap: "10px" }}>
<button
onClick={() => exportQuizToPdf(msg.text, "quiz")}
style={{
padding: "6px 14px",
borderRadius: "10px",
border: "none",
background: "linear-gradient(135deg, #8B5CF6 0%, #6366F1 100%)",
color: "white",
fontWeight: 600,
fontSize: "12px",
cursor: "pointer",
boxShadow: "0 4px 10px rgba(139, 92, 246, 0.2)",
transition: "all 0.2s ease"
}}
>
📄 Download PDF
</button>
<button
onClick={() => exportQuizToWord(msg.text, "quiz")}
style={{
padding: "6px 14px",
borderRadius: "10px",
border: darkMode ? "1px solid rgba(255,255,255,0.15)" : "1px solid rgba(0,0,0,0.15)",
background: "transparent",
color: darkMode ? "#D1D5DB" : "#4B5563",
fontWeight: 600,
fontSize: "12px",
cursor: "pointer",
transition: "all 0.2s ease"
}}
>
📝 Download Word
</button>
</div>
)}
Comment on lines +114 to 150

@coderabbitai coderabbitai Bot Jun 8, 2026

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⚠️ Potential issue | 🟠 Major | ⚡ Quick win

Guard quiz-export predicate against non-string msg.text.

Line [114] calls .includes and .toLowerCase() directly on msg.text; a null/non-string payload will throw during render and break the chat view.

Proposed fix 
 const MessageBubble = ({ msg, darkMode, onOpenSource }) => {
+  const messageText = typeof msg.text === "string" ? msg.text : "";
+  const isQuizMessage =
+    msg.role === "bot" &&
+    !msg.streaming &&
+    (msg.mode === "quiz" ||
+      messageText.includes("# Quiz") ||
+      messageText.toLowerCase().includes("quiz:"));

   const getSourceLabel = (source) => source.document || "Source Document";
   const hasOpenablePage = (source) => Boolean(source.page && source.document);
@@
-            <ReactMarkdown rehypePlugins={[[rehypeSanitize, MARKDOWN_SANITIZE_SCHEMA]]}>{msg.text}</ReactMarkdown>
+            <ReactMarkdown rehypePlugins={[[rehypeSanitize, MARKDOWN_SANITIZE_SCHEMA]]}>{messageText}</ReactMarkdown>
@@
-        {msg.role === "bot" && !msg.streaming && (msg.mode === "quiz" || msg.text.includes("# Quiz") || msg.text.toLowerCase().includes("quiz:")) && (
+        {isQuizMessage && (
           <div style={{ marginTop: "14px", display: "flex", gap: "10px" }}>
             <button
-              onClick={() => exportQuizToPdf(msg.text, "quiz")}
+              onClick={() => exportQuizToPdf(messageText, "quiz")}
@@
             <button
-              onClick={() => exportQuizToWord(msg.text, "quiz")}
+              onClick={() => exportQuizToWord(messageText, "quiz")}
🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@frontend/src/components/ChatPanel/MessageBubble.jsx` around lines 114 - 150,
The predicate that decides whether to render the quiz-export buttons calls
msg.text.includes and msg.text.toLowerCase() which will throw if msg.text is
null or not a string; update the conditional in MessageBubble.jsx to guard
msg.text by checking typeof msg.text === "string" (e.g. typeof msg.text ===
"string" && (msg.mode === "quiz" || msg.text.includes("# Quiz") ||
msg.text.toLowerCase().includes("quiz:"))), so the
exportQuizToPdf/exportQuizToWord handlers are only shown when msg.text is a
string.


{msg.role === "bot" && msg.mode && msg.mode !== "default" && (() => {
const badge = MODE_BADGE[msg.mode] || MODE_BADGE.default;
return (
Expand Down
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