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frontend/frontend/public/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<title>Disease Q&A Chatbot</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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</head>
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<body>
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<div id="root"></div>
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</body>
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</html>
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frontend/frontend/src/index.js
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import React, { useState } from "react";
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import ReactDOM from "react-dom/client";
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function App() {
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const [input, setInput] = useState("");
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const [chat, setChat] = useState([]);
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const [loading, setLoading] = useState(false);
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const [loggedIn, setLoggedIn] = useState(false);
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const [auth, setAuth] = useState({ username: "", password: "" });
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const [sessionId, setSessionId] = useState(() => crypto.randomUUID());
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const API_TOKEN = "supersecret";
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const login = async () => {
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const res = await fetch("/api/login", {
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method: "POST",
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headers: { "Content-Type": "application/json" },
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body: JSON.stringify(auth),
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});
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const data = await res.json();
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if (data.message === "Login successful") setLoggedIn(true);
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else alert(data.error || "Login failed.");
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};
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const register = async () => {
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const res = await fetch("/api/register", {
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method: "POST",
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headers: { "Content-Type": "application/json" },
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body: JSON.stringify(auth),
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});
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const data = await res.json();
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if (data.message === "User registered successfully") alert("Registered!");
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else alert(data.error || "Registration failed.");
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};
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const sendMessage = async () => {
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if (!input.trim()) return;
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setChat((prev) => [...prev, { sender: "You", text: input }]);
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setInput("");
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setLoading(true);
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try {
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const response = await fetch("/api/chat", {
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method: "POST",
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headers: {
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"Authorization": `Bearer ${API_TOKEN}`,
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"Content-Type": "application/json"
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},
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body: JSON.stringify({
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message: input,
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model_choice: "TinyLLaMA (1.1B)",
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session_id: sessionId
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})
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});
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const data = await response.json();
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setChat((prev) => [...prev, { sender: "Bot", text: data.answer || data.error }]);
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} catch {
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setChat((prev) => [...prev, { sender: "Bot", text: "❌ Server error" }]);
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}
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setLoading(false);
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};
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const resetSession = async () => {
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await fetch("/api/reset", {
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method: "POST",
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headers: {
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"Authorization": `Bearer ${API_TOKEN}`,
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"Content-Type": "application/json"
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},
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body: JSON.stringify({ session_id: sessionId })
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});
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setChat([]);
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setSessionId(crypto.randomUUID());
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};
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if (!loggedIn) {
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return (
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<div style={{ padding: "2rem", textAlign: "center" }}>
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<h2>Login</h2>
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<input placeholder="Username" onChange={e => setAuth({ ...auth, username: e.target.value })} /><br />
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<input type="password" placeholder="Password" onChange={e => setAuth({ ...auth, password: e.target.value })} /><br />
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<button onClick={login}>Login</button> <button onClick={register}>Register</button>
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</div>
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);
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}
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return (
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<div style={{ padding: "2rem", maxWidth: "600px", margin: "auto" }}>
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<h2>Disease Q&A Chatbot</h2>
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<div style={{ border: "1px solid #ccc", height: "300px", overflowY: "auto", padding: "1rem", background: "#f9f9f9" }}>
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{chat.map((msg, i) => <p key={i}><strong>{msg.sender}:</strong> {msg.text}</p>)}
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{loading && <p><em>Thinking...</em></p>}
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</div>
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<input value={input} onChange={e => setInput(e.target.value)} onKeyDown={e => e.key === 'Enter' && sendMessage()} placeholder="Ask something..." style={{ width: "80%", padding: "0.5rem" }} />
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<button onClick={sendMessage}>Send</button>
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<br />
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<button onClick={resetSession} style={{ marginTop: "1rem" }}>Reset Session</button>
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</div>
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);
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}
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const root = ReactDOM.createRoot(document.getElementById("root"));
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root.render(<App />);
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