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feat: Add ChatGPT-style streaming responses using SSE for Unio AI assistant #380

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Merged
codeunia-dev merged 2 commits into from
Nov 25, 2025
Merged

feat: Add ChatGPT-style streaming responses using SSE for Unio AI assistant #380

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2a2bd1c
feat: update OpenRouter AI models and use dynamic current date in pro…
akshay0611 Nov 25, 2025
fe523e0
feat: Implement AI chat streaming with OpenRouter API and real-time U…
akshay0611 Nov 25, 2025
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188 changes: 132 additions & 56 deletions app/ai/page.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ export default function AIPage() {
const router = useRouter();
const [profile, setProfile] = useState<{ first_name: string; last_name: string } | null>(null);
const [profileLoading, setProfileLoading] = useState(true);

const [messages, setMessages] = useState<Message[]>([]);
const [input, setInput] = useState('');
const [isLoading, setIsLoading] = useState(false);
Expand All @@ -61,7 +61,7 @@ export default function AIPage() {
useEffect(() => {
const fetchProfile = async () => {
if (!user) return;

try {
const supabase = createClient();
const { data, error } = await supabase
Expand Down Expand Up @@ -184,11 +184,28 @@ export default function AIPage() {
setMessages(prev => [...prev, userMessage]);
setInput('');
setIsLoading(true);
// setIsTyping(true); // Typing indicator disabled
setShowSuggestions(false);

// Don't add typing message to the messages array anymore
// We'll handle it with a separate state
// Show immediate typing indicator while waiting for stream to start
const thinkingId = `page-thinking-${Date.now()}`;
const thinkingMessage: Message = {
id: thinkingId,
text: '',
sender: 'ai',
timestamp: new Date(),
isTyping: true
};
setMessages(prev => [...prev, thinkingMessage]);

// Create streaming message placeholder (will replace thinking indicator)
const streamingId = `page-streaming-${Date.now()}`;
const streamingMessage: Message = {
id: streamingId,
text: '',
sender: 'ai',
timestamp: new Date(),
isTyping: false
};

try {
const response = await fetch('/api/ai', {
Expand All @@ -203,26 +220,87 @@ export default function AIPage() {
throw new Error(`HTTP error! status: ${response.status}`);
}

const data: AIResponse = await response.json();

// setIsTyping(false); // Typing indicator disabled

if (data.success) {
const aiMessage: Message = {
id: `page-ai-${Date.now() + 1}`,
text: data.response,
sender: 'ai',
timestamp: new Date(),
context: data.context
};
setMessages(prev => [...prev, aiMessage]);
// Check if response is streaming (SSE) or regular JSON
const contentType = response.headers.get('content-type');

if (contentType?.includes('text/event-stream')) {
// STREAMING MODE
// Replace thinking indicator with streaming message
setMessages(prev => prev.filter(m => m.id !== thinkingId).concat(streamingMessage));

const reader = response.body?.getReader();
const decoder = new TextDecoder();
let accumulatedText = '';
let currentContext = '';

if (!reader) throw new Error('No reader available');

while (true) {
const { done, value } = await reader.read();

if (done) break;

const chunk = decoder.decode(value);
const lines = chunk.split('\n');

for (const line of lines) {
if (line.startsWith('data: ')) {
const data = line.slice(6);

try {
const parsed = JSON.parse(data);

if (parsed.done) {
break;
}

if (parsed.error) {
throw new Error(parsed.error);
}

if (parsed.content) {
accumulatedText += parsed.content;
currentContext = parsed.context || currentContext;

// Update the streaming message in real-time
setMessages(prev =>
prev.map(msg =>
msg.id === streamingId
? { ...msg, text: accumulatedText, context: currentContext }
: msg
)
);
}
} catch {
// Ignore malformed JSON
continue;
}
}
}
}
} else {
throw new Error(data.error || 'AI response was not successful');
// NON-STREAMING MODE (fallback)
const data: AIResponse = await response.json();

if (data.success) {
const aiMessage: Message = {
id: `page-ai-${Date.now() + 1}`,
text: data.response,
sender: 'ai',
timestamp: new Date(),
context: data.context
};
setMessages(prev => [...prev, aiMessage]);
} else {
throw new Error(data.error || 'AI response was not successful');
}
}
} catch (error) {
console.error('Error sending message:', error);
// setIsTyping(false); // Typing indicator disabled


// Remove both thinking indicator and streaming message if present
setMessages(prev => prev.filter(m => m.id !== thinkingId && m.id !== streamingId));

const errorMessage: Message = {
id: `page-error-${Date.now() + 1}`,
text: 'Sorry, I\'m having trouble connecting to the AI service. Please try again later.',
Expand Down Expand Up @@ -309,27 +387,27 @@ export default function AIPage() {
</div>
<div className="flex items-center gap-1 sm:gap-2">
<Link href="/">
<Button
variant="ghost"
size="sm"
<Button
variant="ghost"
size="sm"
className="text-gray-400 hover:bg-gray-800 hover:text-gray-300 rounded-lg h-8 w-8 sm:h-9 sm:w-9 p-0"
title="Go to Homepage"
>
<Home className="w-3.5 h-3.5 sm:w-4 sm:h-4" />
</Button>
</Link>
<Button
variant="ghost"
size="sm"
<Button
variant="ghost"
size="sm"
className="text-gray-400 hover:bg-gray-800 hover:text-gray-300 rounded-lg h-8 w-8 sm:h-9 sm:w-9 p-0"
onClick={() => window.location.reload()}
title="Refresh Chat"
>
<RefreshCw className="w-3.5 h-3.5 sm:w-4 sm:h-4" />
</Button>
<Button
variant="ghost"
size="sm"
<Button
variant="ghost"
size="sm"
className="text-gray-400 hover:bg-gray-800 hover:text-gray-300 rounded-lg h-8 w-8 sm:h-9 sm:w-9 p-0"
title="More Options"
>
Expand All @@ -343,7 +421,7 @@ export default function AIPage() {
{/* Responsive Messages Container for All Screen Sizes */}
<div className="flex-1 overflow-hidden bg-gray-900">
<div className="max-w-6xl mx-auto h-full flex flex-col">

{/* Messages */}
<div className="flex-1 overflow-y-auto px-4 md:px-6 py-4 sm:py-8">
<div className="space-y-4 sm:space-y-6 max-w-4xl mx-auto">
Expand All @@ -361,26 +439,24 @@ export default function AIPage() {
</p>
</div>
)}

{messages.slice(1).map((message) => (
<div
key={message.id}
className={`flex gap-3 sm:gap-4 group ${
message.sender === 'user' ? 'justify-end' : 'justify-start'
}`}
className={`flex gap-3 sm:gap-4 group ${message.sender === 'user' ? 'justify-end' : 'justify-start'
}`}
>
{message.sender === 'ai' && (
<div className="w-8 h-8 sm:w-10 sm:h-10 flex items-center justify-center flex-shrink-0 mt-1">
<CodeuniaLogo size="sm" showText={false} noLink={true} instanceId={`ai-msg-${message.id}`} />
</div>
)}

<div
className={`max-w-[80%] sm:max-w-[85%] group transition-all duration-200 ${
message.sender === 'user'
? 'bg-gray-700 text-white rounded-2xl rounded-br-md'
: 'bg-transparent text-gray-100 rounded-2xl'
} px-4 sm:px-5 py-3 sm:py-4 relative`}
className={`max-w-[80%] sm:max-w-[85%] group transition-all duration-200 ${message.sender === 'user'
? 'bg-gray-700 text-white rounded-2xl rounded-br-md'
: 'bg-transparent text-gray-100 rounded-2xl'
} px-4 sm:px-5 py-3 sm:py-4 relative`}
>
{message.isTyping ? (
<div className="flex items-center gap-2 sm:gap-3 py-2 sm:py-3">
Expand Down Expand Up @@ -414,28 +490,28 @@ export default function AIPage() {
) : (
<p className="text-sm sm:text-base leading-relaxed whitespace-pre-wrap">{message.text}</p>
)}

<div className="flex items-center justify-between mt-2 sm:mt-3 gap-2 sm:gap-3">
<span className={`text-xs ${message.sender === 'user' ? 'text-gray-300' : 'text-gray-500'}`}>
<span className={`text-xs ${message.sender === 'user' ? 'text-gray-300' : 'text-gray-500'
}`}>
{message.timestamp.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
</span>

<div className="flex items-center gap-1.5 sm:gap-2">
{message.context && message.sender === 'ai' && (
<Badge variant="secondary" className={`text-xs bg-gray-800 text-gray-300 border-gray-700`}>
<Badge variant="secondary" className="text-xs bg-gray-800 text-gray-300 border-gray-700">
{message.context}
</Badge>
)}
<div className={`opacity-0 group-hover:opacity-100 transition-opacity duration-200 flex gap-1`}>

<div className="opacity-0 group-hover:opacity-100 transition-opacity duration-200 flex gap-1">
<Button
variant="ghost"
size="sm"
className={`h-6 w-6 p-0 rounded-lg transition-all duration-200 ${
message.sender === 'user'
? 'text-gray-300 hover:text-white hover:bg-gray-600'
: 'text-gray-500 hover:text-gray-300 hover:bg-gray-800'
}`}
className={`h-6 w-6 p-0 rounded-lg transition-all duration-200 ${message.sender === 'user'
? 'text-gray-300 hover:text-white hover:bg-gray-600'
: 'text-gray-500 hover:text-gray-300 hover:bg-gray-800'
}`}
onClick={() => copyMessage(message.text)}
title="Copy message"
>
Expand All @@ -458,7 +534,7 @@ export default function AIPage() {
</>
)}
</div>

{message.sender === 'user' && (
<div className="w-8 h-8 rounded-full bg-gray-600 flex items-center justify-center flex-shrink-0 mt-1">
<User className="w-4 h-4 text-gray-300" />
Expand Down Expand Up @@ -493,7 +569,7 @@ export default function AIPage() {
</div>
</div>
)}

<div className="relative">
<Textarea
ref={textareaRef}
Expand All @@ -508,7 +584,7 @@ export default function AIPage() {
className="resize-none min-h-[52px] sm:min-h-[60px] max-h-[140px] sm:max-h-[160px] w-full rounded-2xl sm:rounded-3xl border-2 border-gray-700 focus:border-gray-600 focus:ring-0 bg-gray-800 text-gray-100 placeholder-gray-500 px-5 sm:px-6 py-4 sm:py-5 pr-14 sm:pr-16 text-base sm:text-lg leading-relaxed transition-all duration-200 hover:border-gray-600"
rows={1}
/>

<Button
onClick={handleSendClick}
disabled={isLoading || !input.trim()}
Expand All @@ -518,7 +594,7 @@ export default function AIPage() {
{isLoading ? <Loader2 className="w-5 h-5 sm:w-6 sm:h-6 animate-spin" /> : <Send className="w-5 h-5 sm:w-6 sm:h-6" />}
</Button>
</div>

<div className="flex items-center justify-center mt-3 sm:mt-4 px-2">
<p className="text-xs text-gray-500 text-center leading-relaxed">
Unio may display inaccurate info, including about people, so double-check its responses.
Expand Down
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