enabling login btw users

This commit is contained in:
2025-10-25 09:30:54 -04:00
parent 6b616137d3
commit 29ac724d50
25 changed files with 1172 additions and 227 deletions

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# Token Refresh Implementation
## Overview
The API services now automatically handle token refresh when access tokens expire. This provides a seamless user experience without requiring manual re-authentication.
## How It Works
### 1. **userService.ts**
The `userService` now includes:
- **`refreshToken()`**: Automatically gets the refresh token from localStorage, calls the `/api/user/refresh` endpoint, and updates the access token
- **`fetchWithAuth()`**: A wrapper around `fetch()` that:
1. Automatically adds the Authorization header with the access token
2. Detects 401 (Unauthorized) responses
3. Automatically refreshes the token using the refresh token
4. Retries the original request with the new access token
5. Throws an error if refresh fails (e.g., refresh token expired)
### 2. **conversationService.ts**
Now uses `userService.fetchWithAuth()` for all API calls:
- `sendQuery()` - No longer needs token parameter
- `getMessages()` - No longer needs token parameter
### 3. **Components Updated**
**ChatScreen.tsx**:
- Removed manual token handling
- Now simply calls `conversationService.sendQuery(query)` and `conversationService.getMessages()`
## Benefits
**Automatic token refresh** - Users stay logged in longer
**Transparent retry logic** - Failed requests due to expired tokens are automatically retried
**Cleaner code** - Components don't need to manage tokens
**Better UX** - No interruptions when access token expires
**Centralized auth logic** - All auth handling in one place
## Error Handling
- If refresh token is missing or invalid, the error is thrown
- Components can catch these errors and redirect to login
- LocalStorage is automatically cleared when refresh fails
## Usage Example
```typescript
// Old way (manual token management)
const token = localStorage.getItem("access_token");
const result = await conversationService.sendQuery(query, token);
// New way (automatic token refresh)
const result = await conversationService.sendQuery(query);
```
## Token Storage
- **Access Token**: `localStorage.getItem("access_token")`
- **Refresh Token**: `localStorage.getItem("refresh_token")`
Both are automatically managed by the services.

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import { useEffect, useState } from "react";
import axios from "axios";
import ReactMarkdown from "react-markdown";
import { useState, useEffect } from "react";
import "./App.css";
import { AuthProvider } from "./contexts/AuthContext";
import { ChatScreen } from "./components/ChatScreen";
import { LoginScreen } from "./components/LoginScreen";
import { conversationService } from "./api/conversationService";
type QuestionAnswer = {
question: string;
answer: string;
};
const AppContainer = () => {
const [isAuthenticated, setAuthenticated] = useState<boolean>(false);
const [isChecking, setIsChecking] = useState<boolean>(true);
type QuestionBubbleProps = {
text: string;
};
useEffect(() => {
const checkAuth = async () => {
const accessToken = localStorage.getItem("access_token");
const refreshToken = localStorage.getItem("refresh_token");
type AnswerBubbleProps = {
text: string;
loading: string;
};
// No tokens at all, not authenticated
if (!accessToken && !refreshToken) {
setIsChecking(false);
setAuthenticated(false);
return;
}
type QuestionAnswerPairProps = {
question: string;
answer: string;
loading: boolean;
};
// Try to verify token by making a request
try {
await conversationService.getMessages();
// If successful, user is authenticated
setAuthenticated(true);
} catch (error) {
// Token is invalid or expired
console.error("Authentication check failed:", error);
localStorage.removeItem("access_token");
localStorage.removeItem("refresh_token");
setAuthenticated(false);
} finally {
setIsChecking(false);
}
};
type Conversation = {
title: string;
id: string;
};
checkAuth();
}, []);
type Message = {
text: string;
speaker: "simba" | "user";
};
// Show loading state while checking authentication
if (isChecking) {
return (
<div className="h-screen flex items-center justify-center bg-white/85">
<div className="text-xl">Loading...</div>
</div>
);
}
type ConversationMenuProps = {
conversations: Conversation[];
};
const ConversationMenu = ({ conversations }: ConversationMenuProps) => {
return (
<div className="absolute bg-white w-md rounded-md shadow-xl m-4 p-4">
<p className="py-2 px-4 rounded-md w-full text-xl font-bold">askSimba!</p>
{conversations.map((conversation) => (
<p className="py-2 px-4 rounded-md hover:bg-stone-200 w-full text-xl font-bold cursor-pointer">
{conversation.title}
</p>
))}
</div>
);
};
const QuestionBubble = ({ text }: QuestionBubbleProps) => {
return <div className="rounded-md bg-stone-200 p-3">🤦: {text}</div>;
};
const AnswerBubble = ({ text, loading }: AnswerBubbleProps) => {
return (
<div className="rounded-md bg-orange-100 p-3">
{loading ? (
<div className="flex flex-col w-full animate-pulse gap-2">
<div className="flex flex-row gap-2 w-full">
<div className="bg-gray-400 w-1/2 p-3 rounded-lg" />
<div className="bg-gray-400 w-1/2 p-3 rounded-lg" />
</div>
<div className="flex flex-row gap-2 w-full">
<div className="bg-gray-400 w-1/3 p-3 rounded-lg" />
<div className="bg-gray-400 w-2/3 p-3 rounded-lg" />
</div>
</div>
<>
{isAuthenticated ? (
<ChatScreen setAuthenticated={setAuthenticated} />
) : (
<div className="flex flex-col">
<ReactMarkdown>{"🐈: " + text}</ReactMarkdown>
</div>
<LoginScreen setAuthenticated={setAuthenticated} />
)}
</div>
);
};
const QuestionAnswerPair = ({
question,
answer,
loading,
}: QuestionAnswerPairProps) => {
return (
<div className="flex flex-col gap-4">
<QuestionBubble text={question} />
<AnswerBubble text={answer} loading={loading} />
</div>
</>
);
};
const App = () => {
const [query, setQuery] = useState<string>("");
const [answer, setAnswer] = useState<string>("");
const [simbaMode, setSimbaMode] = useState<boolean>(false);
const [questionsAnswers, setQuestionsAnswers] = useState<QuestionAnswer[]>(
[],
);
const [messages, setMessages] = useState<Message[]>([]);
const [conversations, setConversations] = useState<Conversation[]>([
{ title: "simba meow meow", id: "uuid" },
]);
const simbaAnswers = ["meow.", "hiss...", "purrrrrr", "yowOWROWWowowr"];
useEffect(() => {
axios.get("/api/messages").then((result) => {
setMessages(
result.data.messages.map((message) => {
return {
text: message.text,
speaker: message.speaker,
};
}),
);
});
}, []);
const handleQuestionSubmit = () => {
let currMessages = messages.concat([{ text: query, speaker: "user" }]);
setMessages(currMessages);
if (simbaMode) {
console.log("simba mode activated");
const randomIndex = Math.floor(Math.random() * simbaAnswers.length);
const randomElement = simbaAnswers[randomIndex];
setAnswer(randomElement);
setQuestionsAnswers(
questionsAnswers.concat([
{
question: query,
answer: randomElement,
},
]),
);
return;
}
const payload = { query: query };
axios.post("/api/query", payload).then((result) => {
setQuestionsAnswers(
questionsAnswers.concat([
{ question: query, answer: result.data.response },
]),
);
setMessages(
currMessages.concat([{ text: result.data.response, speaker: "simba" }]),
);
});
};
const handleQueryChange = (event) => {
setQuery(event.target.value);
};
return (
<div className="h-screen bg-opacity-20">
<div className="bg-white/85 h-screen">
<div className="flex flex-row justify-center py-4">
<div className="flex flex-col gap-4 min-w-xl max-w-xl">
<header className="flex flex-row justify-center gap-2 grow sticky top-0 z-10 bg-white">
<h1 className="text-3xl">ask simba!</h1>
</header>
{/*{questionsAnswers.map((qa) => (
<QuestionAnswerPair question={qa.question} answer={qa.answer} />
))}*/}
{messages.map((msg) => {
if (msg.speaker == "simba") {
return <AnswerBubble text={msg.text} loading="" />;
}
return <QuestionBubble text={msg.text} />;
})}
<footer className="flex flex-col gap-2 sticky bottom-0">
<div className="flex flex-row justify-between gap-2 grow">
<textarea
type="text"
className="p-4 border border-blue-200 rounded-md grow bg-white"
onChange={handleQueryChange}
/>
</div>
<div className="flex flex-row justify-between gap-2 grow">
<button
className="p-4 border border-blue-400 bg-blue-200 hover:bg-blue-400 cursor-pointer rounded-md flex-grow"
onClick={() => handleQuestionSubmit()}
type="submit"
>
Submit
</button>
</div>
<div className="flex flex-row justify-center gap-2 grow">
<input
type="checkbox"
onChange={(event) => setSimbaMode(event.target.checked)}
/>
<p>simba mode?</p>
</div>
</footer>
</div>
</div>
</div>
</div>
<AuthProvider>
<AppContainer />
</AuthProvider>
);
};

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import { userService } from "./userService";
interface Message {
id: string;
text: string;
speaker: "user" | "simba";
created_at: string;
}
interface Conversation {
id: string;
name: string;
messages: Message[];
created_at: string;
updated_at: string;
}
interface QueryRequest {
query: string;
}
interface QueryResponse {
response: string;
}
class ConversationService {
private baseUrl = "/api";
async sendQuery(query: string): Promise<QueryResponse> {
const response = await userService.fetchWithRefreshToken(
`${this.baseUrl}/query`,
{
method: "POST",
body: JSON.stringify({ query }),
},
);
if (!response.ok) {
throw new Error("Failed to send query");
}
return await response.json();
}
async getMessages(): Promise<Conversation> {
const response = await userService.fetchWithRefreshToken(
`${this.baseUrl}/messages`,
{
method: "GET",
},
);
if (!response.ok) {
throw new Error("Failed to fetch messages");
}
return await response.json();
}
}
export const conversationService = new ConversationService();

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interface LoginResponse {
access_token: string;
refresh_token: string;
user: {
id: string;
username: string;
};
}
interface RefreshResponse {
access_token: string;
}
class UserService {
private baseUrl = "/api/user";
async login(username: string, password: string): Promise<LoginResponse> {
const response = await fetch(`${this.baseUrl}/login`, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ username, password }),
});
if (!response.ok) {
throw new Error("Invalid credentials");
}
return await response.json();
}
async refreshToken(): Promise<string> {
const refreshToken = localStorage.getItem("refresh_token");
if (!refreshToken) {
throw new Error("No refresh token available");
}
const response = await fetch(`${this.baseUrl}/refresh`, {
method: "POST",
headers: {
"Content-Type": "application/json",
Authorization: `Bearer ${refreshToken}`,
},
});
if (!response.ok) {
// Refresh token is invalid or expired, clear storage
localStorage.removeItem("access_token");
localStorage.removeItem("refresh_token");
throw new Error("Failed to refresh token");
}
const data: RefreshResponse = await response.json();
localStorage.setItem("access_token", data.access_token);
return data.access_token;
}
async fetchWithAuth(
url: string,
options: RequestInit = {},
): Promise<Response> {
const accessToken = localStorage.getItem("access_token");
// Add authorization header
const headers = {
"Content-Type": "application/json",
...(options.headers || {}),
...(accessToken && { Authorization: `Bearer ${accessToken}` }),
};
let response = await fetch(url, { ...options, headers });
// If unauthorized, try refreshing the token
if (response.status === 401) {
try {
const newAccessToken = await this.refreshToken();
// Retry the request with new token
headers.Authorization = `Bearer ${newAccessToken}`;
response = await fetch(url, { ...options, headers });
} catch (error) {
// Refresh failed, redirect to login or throw error
throw new Error("Session expired. Please log in again.");
}
}
return response;
}
async fetchWithRefreshToken(
url: string,
options: RequestInit = {},
): Promise<Response> {
const refreshToken = localStorage.getItem("refresh_token");
// Add authorization header
const headers = {
"Content-Type": "application/json",
...(options.headers || {}),
...(refreshToken && { Authorization: `Bearer ${refreshToken}` }),
};
let response = await fetch(url, { ...options, headers });
// If unauthorized, try refreshing the token
if (response.status === 401) {
try {
const newAccessToken = await this.refreshToken();
// Retry the request with new token
headers.Authorization = `Bearer ${newAccessToken}`;
response = await fetch(url, { ...options, headers });
} catch (error) {
// Refresh failed, redirect to login or throw error
throw new Error("Session expired. Please log in again.");
}
}
return response;
}
}
export const userService = new UserService();

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import ReactMarkdown from "react-markdown";
type AnswerBubbleProps = {
text: string;
loading?: boolean;
};
export const AnswerBubble = ({ text, loading }: AnswerBubbleProps) => {
return (
<div className="rounded-md bg-orange-100 p-3">
{loading ? (
<div className="flex flex-col w-full animate-pulse gap-2">
<div className="flex flex-row gap-2 w-full">
<div className="bg-gray-400 w-1/2 p-3 rounded-lg" />
<div className="bg-gray-400 w-1/2 p-3 rounded-lg" />
</div>
<div className="flex flex-row gap-2 w-full">
<div className="bg-gray-400 w-1/3 p-3 rounded-lg" />
<div className="bg-gray-400 w-2/3 p-3 rounded-lg" />
</div>
</div>
) : (
<div className="flex flex-col">
<ReactMarkdown>{"🐈: " + text}</ReactMarkdown>
</div>
)}
</div>
);
};

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import { useEffect, useState } from "react";
import { conversationService } from "../api/conversationService";
import { QuestionBubble } from "./QuestionBubble";
import { AnswerBubble } from "./AnswerBubble";
type Message = {
text: string;
speaker: "simba" | "user";
};
type QuestionAnswer = {
question: string;
answer: string;
};
type Conversation = {
title: string;
id: string;
};
type ChatScreenProps = {
setAuthenticated: (isAuth: boolean) => void;
};
export const ChatScreen = ({ setAuthenticated }: ChatScreenProps) => {
const [query, setQuery] = useState<string>("");
const [answer, setAnswer] = useState<string>("");
const [simbaMode, setSimbaMode] = useState<boolean>(false);
const [questionsAnswers, setQuestionsAnswers] = useState<QuestionAnswer[]>(
[],
);
const [messages, setMessages] = useState<Message[]>([]);
const [conversations, setConversations] = useState<Conversation[]>([
{ title: "simba meow meow", id: "uuid" },
]);
const simbaAnswers = ["meow.", "hiss...", "purrrrrr", "yowOWROWWowowr"];
useEffect(() => {
const loadMessages = async () => {
try {
const conversation = await conversationService.getMessages();
setMessages(
conversation.messages.map((message) => ({
text: message.text,
speaker: message.speaker,
})),
);
} catch (error) {
console.error("Failed to load messages:", error);
}
};
loadMessages();
}, []);
const handleQuestionSubmit = async () => {
const currMessages = messages.concat([{ text: query, speaker: "user" }]);
setMessages(currMessages);
if (simbaMode) {
console.log("simba mode activated");
const randomIndex = Math.floor(Math.random() * simbaAnswers.length);
const randomElement = simbaAnswers[randomIndex];
setAnswer(randomElement);
setQuestionsAnswers(
questionsAnswers.concat([
{
question: query,
answer: randomElement,
},
]),
);
return;
}
try {
const result = await conversationService.sendQuery(query);
setQuestionsAnswers(
questionsAnswers.concat([{ question: query, answer: result.response }]),
);
setMessages(
currMessages.concat([{ text: result.response, speaker: "simba" }]),
);
setQuery(""); // Clear input after successful send
} catch (error) {
console.error("Failed to send query:", error);
// If session expired, redirect to login
if (error instanceof Error && error.message.includes("Session expired")) {
setAuthenticated(false);
}
}
};
const handleQueryChange = (event: React.ChangeEvent<HTMLTextAreaElement>) => {
setQuery(event.target.value);
};
return (
<div className="h-screen bg-opacity-20">
<div className="bg-white/85 h-screen">
<div className="flex flex-row justify-center py-4">
<div className="flex flex-col gap-4 min-w-xl max-w-xl">
<div className="flex flex-row justify-between">
<header className="flex flex-row justify-center gap-2 grow sticky top-0 z-10 bg-white">
<h1 className="text-3xl">ask simba!</h1>
</header>
<button
className="p-4 border border-red-400 bg-red-200 hover:bg-red-400 cursor-pointer rounded-md"
onClick={() => setAuthenticated(false)}
>
logout
</button>
</div>
{messages.map((msg, index) => {
if (msg.speaker === "simba") {
return <AnswerBubble key={index} text={msg.text} />;
}
return <QuestionBubble key={index} text={msg.text} />;
})}
<footer className="flex flex-col gap-2 sticky bottom-0">
<div className="flex flex-row justify-between gap-2 grow">
<textarea
className="p-4 border border-blue-200 rounded-md grow bg-white"
onChange={handleQueryChange}
value={query}
/>
</div>
<div className="flex flex-row justify-between gap-2 grow">
<button
className="p-4 border border-blue-400 bg-blue-200 hover:bg-blue-400 cursor-pointer rounded-md flex-grow"
onClick={() => handleQuestionSubmit()}
type="submit"
>
Submit
</button>
</div>
<div className="flex flex-row justify-center gap-2 grow">
<input
type="checkbox"
onChange={(event) => setSimbaMode(event.target.checked)}
/>
<p>simba mode?</p>
</div>
</footer>
</div>
</div>
</div>
</div>
);
};

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type Conversation = {
title: string;
id: string;
};
type ConversationMenuProps = {
conversations: Conversation[];
};
export const ConversationMenu = ({ conversations }: ConversationMenuProps) => {
return (
<div className="absolute bg-white w-md rounded-md shadow-xl m-4 p-4">
<p className="py-2 px-4 rounded-md w-full text-xl font-bold">askSimba!</p>
{conversations.map((conversation) => (
<p
key={conversation.id}
className="py-2 px-4 rounded-md hover:bg-stone-200 w-full text-xl font-bold cursor-pointer"
>
{conversation.title}
</p>
))}
</div>
);
};

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import { useState } from "react";
import { userService } from "../api/userService";
type LoginScreenProps = {
setAuthenticated: (isAuth: boolean) => void;
};
export const LoginScreen = ({ setAuthenticated }: LoginScreenProps) => {
const [username, setUsername] = useState<string>("");
const [password, setPassword] = useState<string>("");
const [error, setError] = useState<string>("");
const handleLogin = async () => {
if (!username || !password) {
setError("Please enter username and password");
return;
}
try {
const result = await userService.login(username, password);
localStorage.setItem("access_token", result.access_token);
localStorage.setItem("refresh_token", result.refresh_token);
setAuthenticated(true);
setError("");
} catch (err) {
setError("Login failed. Please check your credentials.");
console.error("Login error:", err);
}
};
return (
<div className="h-screen bg-opacity-20">
<div className="bg-white/85 h-screen">
<div className="flex flex-row justify-center py-4">
<div className="flex flex-col gap-4 min-w-xl max-w-xl">
<div className="flex flex-col gap-1">
<div className="flex flex-grow justify-center w-full bg-amber-400">
<h1 className="text-xl font-bold">
I AM LOOKING FOR A DESIGNER. THIS APP WILL REMAIN UGLY UNTIL A
DESIGNER COMES.
</h1>
</div>
<header className="flex flex-row justify-center gap-2 grow sticky top-0 z-10 bg-white">
<h1 className="text-3xl">ask simba!</h1>
</header>
<label htmlFor="username">username</label>
<input
type="text"
id="username"
name="username"
value={username}
onChange={(e) => setUsername(e.target.value)}
className="border border-s-slate-950 p-3 rounded-md"
/>
<label htmlFor="password">password</label>
<input
type="password"
id="password"
name="password"
value={password}
onChange={(e) => setPassword(e.target.value)}
className="border border-s-slate-950 p-3 rounded-md"
/>
{error && (
<div className="text-red-600 font-semibold">{error}</div>
)}
</div>
<button
className="p-4 border border-blue-400 bg-blue-200 hover:bg-blue-400 cursor-pointer rounded-md flex-grow"
onClick={handleLogin}
>
login
</button>
</div>
</div>
</div>
</div>
);
};

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type QuestionBubbleProps = {
text: string;
};
export const QuestionBubble = ({ text }: QuestionBubbleProps) => {
return <div className="rounded-md bg-stone-200 p-3">🤦: {text}</div>;
};

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import { createContext, useContext, useState, ReactNode } from "react";
import { userService } from "../api/userService";
interface AuthContextType {
token: string | null;
login: (username: string, password: string) => Promise<any>;
logout: () => void;
isAuthenticated: () => boolean;
}
const AuthContext = createContext<AuthContextType | undefined>(undefined);
interface AuthProviderProps {
children: ReactNode;
}
export const AuthProvider = ({ children }: AuthProviderProps) => {
const [token, setToken] = useState(localStorage.getItem("access_token"));
const login = async (username: string, password: string) => {
try {
const data = await userService.login(username, password);
setToken(data.access_token);
localStorage.setItem("access_token", data.access_token);
localStorage.setItem("refresh_token", data.refresh_token);
return data;
} catch (error) {
console.error("Login failed:", error);
throw error;
}
};
const logout = () => {
setToken(null);
localStorage.removeItem("access_token");
localStorage.removeItem("refresh_token");
};
const isAuthenticated = () => {
return token !== null && token !== undefined && token !== "";
};
return (
<AuthContext.Provider value={{ token, login, logout, isAuthenticated }}>
{children}
</AuthContext.Provider>
);
};
export const useAuth = () => {
const context = useContext(AuthContext);
if (context === undefined) {
throw new Error("useAuth must be used within an AuthProvider");
}
return context;
};