Add language support and localization features

Author: NikhilGangaram

src/components/chat/ai-chat.tsx

@@ -5,8 +5,10 @@ import { GeminiContextLoader, createContextLoader } from '@/utils/gemini-context
 import ChatMessageComponent from './chat-message';
 import { IoSend, IoRefresh, IoSparkles, IoDocument, IoStop } from 'react-icons/io5';
 import { v4 as uuidv4 } from 'uuid';
+import { useTranslation } from 'react-i18next';
 
 export default function AIChat() {
+    const { i18n } = useTranslation();
     const [messages, setMessages] = useState<ChatMessage[]>([]);
     const [inputValue, setInputValue] = useState('');
     const [status, setStatus] = useState<ChatStatus>(ChatStatus.IDLE);
@@ -150,13 +152,15 @@ export default function AIChat() {
             const terminalContext = contextLoader.current?.getCurrentTerminalContext() || '';
 
             // Use the new simplified chat API - all teaching guidelines are now in backend
-            console.log(`[AIChat] Sending message with session ${sessionId.substring(0, 8)}... (history: ${messages.length} messages)`);
+            const currentLanguage = i18n.language || 'en';
+            console.log(`[AIChat] Sending message with session ${sessionId.substring(0, 8)}... (history: ${messages.length} messages, language: ${currentLanguage})`);
             await geminiClient.current.chatWithContext(
                 sessionId,
                 userMessage.content,
                 messages, // Conversation history
                 editorContext,
                 terminalContext,
+                currentLanguage, // User's selected language
                 (content: string) => {
                     // Check if generation was aborted
                     if (abortController.current?.signal.aborted) {

src/utils/gemini-client.ts

@@ -103,6 +103,7 @@ export class GeminiClient {
         conversationHistory: ChatMessage[] = [],
         editorContext: string = '',
         terminalContext: string = '',
+        language: string = 'en',
         onStream?: (content: string) => void,
         signal?: AbortSignal
     ): Promise<string> {
@@ -121,7 +122,8 @@ export class GeminiClient {
                     content: msg.content
                 })),
                 editor_context: editorContext,
-                terminal_context: terminalContext
+                terminal_context: terminalContext,
+                language: language
             };
 
             console.log('Sending simplified chat request to backend');
@@ -288,6 +290,7 @@ export class GeminiClient {
             conversationHistory,
             '', // No editor context in legacy mode
             '', // No terminal context in legacy mode
+            'en', // Default language for legacy mode
             onStream,
             signal
         );

vite.config.ts

@@ -65,7 +65,7 @@ export default defineConfig({
     server: {
         port: 3000,
         proxy: {
-            '/api': 'https://xrp-code-d-u01.wpi.edu'
+            '/api': 'http://localhost:8000' // 'https://xrp-code-d-u01.wpi.edu'
         }
     },
     build: {