mirror of
https://github.com/microsoft/Web-Dev-For-Beginners.git
synced 2025-09-03 19:52:52 +02:00
a first chat app
This commit is contained in:
chris
1
.gitignore
vendored
1
.gitignore
vendored
@@ -9,6 +9,7 @@
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*.user
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*.userosscache
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*.sln.docstates
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venv
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# User-specific files (MonoDevelop/Xamarin Studio)
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*.userprefs
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@@ -1 +1,26 @@
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# api
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from flask import Flask, request, jsonify
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from llm import call_llm
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from flask_cors import CORS
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app = Flask(__name__)
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CORS(app)
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@app.route("/", methods=["GET"])
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def index():
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return "Welcome to the Chat API!"
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@app.route("/hello", methods=["POST"])
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def hello():
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# get message from request body
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data = request.get_json()
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message = data.get("message", "")
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response = call_llm(message, "You are a helpful assistant.")
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return jsonify({
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"response": response
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})
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if __name__ == "__main__":
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app.run(host="0.0.0.0", port=5000)
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@@ -8,21 +8,22 @@ client = OpenAI(
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api_key=os.environ["GITHUB_TOKEN"],
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)
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response = client.chat.completions.create(
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messages=[
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{
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"role": "system",
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"content": "",
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},
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{
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"role": "user",
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"content": "What is the capital of France?",
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}
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],
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model="openai/gpt-4o-mini",
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temperature=1,
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max_tokens=4096,
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top_p=1
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)
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def call_llm(prompt: str, system_message: str):
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response = client.chat.completions.create(
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messages=[
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{
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"role": "system",
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"content": system_message,
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},
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{
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"role": "user",
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"content": prompt,
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}
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],
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model="openai/gpt-4o-mini",
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temperature=1,
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max_tokens=4096,
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top_p=1
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)
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print(response.choices[0].message.content)
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return response.choices[0].message.content
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@@ -1 +1,94 @@
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// js code
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// Replace placeholder JS with chat UI client logic
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// Handles sending messages to backend and updating the UI
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(function(){
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const messagesEl = document.getElementById('messages');
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const form = document.getElementById('composer');
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const input = document.getElementById('input');
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const sendBtn = document.getElementById('send');
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const BASE_URL = "https://automatic-space-funicular-954qxp96rgcqjq-5000.app.github.dev/";
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const API_ENDPOINT = `${BASE_URL}/hello`; // adjust if your backend runs elsewhere
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function escapeHtml(str){
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if(!str) return '';
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return str.replace(/&/g,'&')
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.replace(/</g,'<')
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.replace(/>/g,'>')
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.replace(/"/g,'"')
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.replace(/'/g,''');
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}
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function formatText(text){
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return escapeHtml(text).replace(/\n/g,'<br>');
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}
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function scrollToBottom(){
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messagesEl.scrollTop = messagesEl.scrollHeight;
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}
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function appendMessage(role, text){
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const el = document.createElement('div');
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el.className = 'message ' + role;
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el.innerHTML = `<div class="content">${formatText(text)}</div><small>${new Date().toLocaleTimeString()}</small>`;
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messagesEl.appendChild(el);
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scrollToBottom();
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return el;
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}
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function createTyping(){
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const el = document.createElement('div');
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el.className = 'message ai';
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const typing = document.createElement('div');
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typing.className = 'typing';
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for(let i=0;i<3;i++){ const d = document.createElement('span'); d.className = 'dot'; typing.appendChild(d); }
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el.appendChild(typing);
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messagesEl.appendChild(el);
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scrollToBottom();
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return el;
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}
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async function sendToApi(text){
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const res = await fetch(API_ENDPOINT, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ message: text })
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});
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if(!res.ok) throw new Error('Network response was not ok');
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let json = await res.json();
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return json.response;
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}
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form.addEventListener('submit', async (e) => {
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e.preventDefault();
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const text = input.value.trim();
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if(!text) return;
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appendMessage('user', text);
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input.value = '';
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input.focus();
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sendBtn.disabled = true;
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const typingEl = createTyping();
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try{
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const reply = await sendToApi(text);
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typingEl.remove();
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appendMessage('ai', reply || '(no response)');
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}catch(err){
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typingEl.remove();
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appendMessage('ai', 'Error: ' + err.message);
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console.error(err);
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}finally{
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sendBtn.disabled = false;
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}
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});
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// Enter to send, Shift+Enter for newline
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input.addEventListener('keydown', (e) => {
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if(e.key === 'Enter' && !e.shiftKey){
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e.preventDefault();
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form.dispatchEvent(new Event('submit', { cancelable: true }));
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}
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});
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// Small welcome message
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appendMessage('ai', 'Hello! I\'m your AI assistant. Ask me anything.');
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})();
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@@ -1,6 +1,35 @@
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<html>
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<html lang="en">
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<head>
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<title>Chat app</title>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<title>Stellar AI Chat</title>
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<link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap" rel="stylesheet">
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<link rel="stylesheet" href="styles.css">
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</head>
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<body></body>
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<body>
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<div class="app">
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<header class="header">
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<div style="display:flex;align-items:center;gap:12px;">
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<div class="logo">🤖</div>
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<div>
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<h1>Stellar AI Chat</h1>
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<p class="subtitle">Dark-mode chat UI — powered by the backend AI</p>
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</div>
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</div>
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</header>
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<main class="chat" id="chat">
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<div class="messages" id="messages" aria-live="polite"></div>
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<form id="composer" class="composer" action="#">
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<textarea id="input" placeholder="Say hello — press Enter to send (Shift+Enter for newline)" rows="2"></textarea>
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<button id="send" type="submit">Send</button>
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</form>
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</main>
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<footer class="footer">Running with backend at <code>http://127.0.0.1:5000/hello</code></footer>
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</div>
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<script src="app.js"></script>
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</body>
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</html>
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@@ -1,3 +1,155 @@
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/* body {
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/* Dark, modern chat styles for the AI chat page */
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:root{
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--bg-1: #0f1724;
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--bg-2: #071226;
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--panel: rgba(255,255,255,0.03);
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--glass: rgba(255,255,255,0.04);
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--accent: #7c3aed; /* purple */
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--accent-2: #06b6d4; /* cyan */
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--muted: rgba(255,255,255,0.55);
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--user-bg: linear-gradient(135deg,#0ea5a4 0%, #06b6d4 100%);
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--ai-bg: linear-gradient(135deg,#111827 0%, #0b1220 100%);
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--radius: 14px;
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--max-width: 900px;
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}
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} */
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*{box-sizing:border-box}
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html,body{height:100%}
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body{
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margin:0;
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font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
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background: radial-gradient(1000px 500px at 10% 10%, rgba(124,58,237,0.12), transparent),
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radial-gradient(800px 400px at 90% 90%, rgba(6,182,212,0.06), transparent),
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linear-gradient(180deg,var(--bg-1), var(--bg-2));
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color: #e6eef8;
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-webkit-font-smoothing:antialiased;
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-moz-osx-font-smoothing:grayscale;
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padding:32px;
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}
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.app{
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max-width:var(--max-width);
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margin:0 auto;
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height:calc(100vh - 64px);
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display:flex;
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flex-direction:column;
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gap:16px;
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}
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.header{
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display:flex;
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align-items:center;
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gap:16px;
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padding:16px 20px;
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border-radius:12px;
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background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
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box-shadow: 0 6px 18px rgba(2,6,23,0.6);
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backdrop-filter: blur(6px);
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}
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.header .logo{
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font-size:28px;
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width:56px;height:56px;
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display:flex;align-items:center;justify-content:center;
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border-radius:12px;
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background: linear-gradient(135deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
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}
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.header h1{margin:0;font-size:18px}
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.header .subtitle{margin:0;font-size:12px;color:var(--muted)}
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.chat{
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background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
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padding:18px;
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border-radius:16px;
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flex:1 1 auto;
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display:flex;
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flex-direction:column;
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overflow:hidden;
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box-shadow: 0 20px 40px rgba(2,6,23,0.6);
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}
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.messages{
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overflow:auto;
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padding:8px;
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display:flex;
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flex-direction:column;
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gap:12px;
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scrollbar-width: thin;
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}
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/* Message bubble */
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.message{
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max-width:85%;
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display:inline-block;
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padding:12px 14px;
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border-radius:12px;
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color: #e6eef8;
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line-height:1.4;
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box-shadow: 0 6px 18px rgba(2,6,23,0.45);
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}
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.message.user{
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margin-left:auto;
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background: var(--user-bg);
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border-radius: 16px 16px 6px 16px;
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text-align:left;
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}
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.message.ai{
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margin-right:auto;
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background: linear-gradient(135deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
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border: 1px solid rgba(255,255,255,0.03);
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color: #cfe6ff;
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border-radius: 16px 16px 16px 6px;
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}
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.message small{display:block;color:var(--muted);font-size:11px;margin-top:6px}
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/* Typing indicator (dots) */
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.typing{
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display:inline-flex;gap:6px;align-items:center;padding:8px 12px;border-radius:10px;background:rgba(255,255,255,0.02)
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}
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.typing .dot{width:8px;height:8px;border-radius:50%;background:var(--muted);opacity:0.9}
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@keyframes blink{0%{transform:translateY(0);opacity:0.25}50%{transform:translateY(-4px);opacity:1}100%{transform:translateY(0);opacity:0.25}}
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.typing .dot:nth-child(1){animation:blink 1s infinite 0s}
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.typing .dot:nth-child(2){animation:blink 1s infinite 0.15s}
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.typing .dot:nth-child(3){animation:blink 1s infinite 0.3s}
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/* Composer */
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.composer{
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display:flex;
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gap:12px;
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align-items:center;
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padding-top:12px;
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border-top:1px dashed rgba(255,255,255,0.02);
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}
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.composer textarea{
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resize:none;
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min-height:44px;
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max-height:160px;
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padding:12px 14px;
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border-radius:12px;
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border: none;
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outline: none;
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background: rgba(255,255,255,0.02);
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color: #e6eef8;
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flex:1 1 auto;
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font-size:14px;
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}
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.composer button{
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background: linear-gradient(135deg,var(--accent),var(--accent-2));
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color:white;
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border:none;
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padding:12px 16px;
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border-radius:12px;
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cursor:pointer;
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font-weight:600;
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box-shadow: 0 8px 24px rgba(12,6,40,0.5);
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transition: transform .12s ease, box-shadow .12s ease;
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}
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.composer button:active{transform:translateY(1px)}
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.footer{color:var(--muted);font-size:12px;text-align:center}
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/* small screens */
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@media (max-width:640px){
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body{padding:16px}
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.app{height:calc(100vh - 32px)}
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.header h1{font-size:16px}
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}
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