feat(codebase-analysis): Add codebase analysis and recommendation command

- Implements a new command  to analyze the codebase and answer user questions.
- Adds a new file  that handles the logic for codebase analysis.
- Integrates  to perform comprehensive analysis including frameworks, dependencies, API endpoints, data models, and database schema.
- Enhances the  to increase the output token limit and reduce aggressive stop sequences for better response completeness.
- Includes a debug truncation test guide () to provide manual testing steps to check if the truncation has been resolved.

Author: Olasunkanmi Oyinlola

debug-truncation-test.md

@@ -0,0 +1,74 @@
+# Response Truncation Fix - Testing Guide
+
+## 🛠️ What Was Implemented
+
+### 1. Enhanced Truncation Detection
+- Detects responses ending with `**API`, `**API `, or similar patterns
+- Identifies incomplete numbered lists, headers, and markdown formatting
+- Catches suspiciously short responses (< 50 chars) or short responses with bold formatting
+
+### 2. Intelligent Retry Mechanism
+- Automatically retries when truncation is detected
+- Uses fresh chat session to avoid context issues
+- Returns the longer response if both are incomplete
+- Fallback to original response if retry fails
+
+### 3. Improved Generation Configuration
+- Increased `maxOutputTokens` to 8192 (doubled)
+- Removed aggressive stop sequences that might cause premature truncation
+- Optimized temperature and other parameters for completeness
+
+### 4. Explicit Completion Instructions
+- Added clear instructions to AI about completing responses
+- Enhanced prompts in both chat interface and command palette
+
+## 🧪 Testing the Fix
+
+### Test Case 1: Chat Interface
+Ask a question that previously caused truncation:
+```
+"Can you explain the API design patterns used in this codebase?"
+```
+
+### Test Case 2: Command Palette
+1. Press `Cmd+Shift+P` (Mac)
+2. Type "CodeBuddy: Analyze Codebase"
+3. Ask: "What are the main API endpoints and their structures?"
+
+### Test Case 3: Specific Truncation Pattern
+Ask questions that might trigger the `**API` truncation:
+```
+"Show me all the API endpoints and explain their functionality"
+"What are the main API patterns and best practices used?"
+```
+
+## 📊 Debug Information
+
+The system now logs detailed debug information in the Developer Console:
+
+1. **Open VS Code Developer Console**: 
+   - Help → Toggle Developer Tools → Console tab
+
+2. **Look for these debug messages**:
+   - `[DEBUG] Response length: X characters`
+   - `[DEBUG] Response ends with: "..."`
+   - `[DEBUG] Response seems incomplete, attempting retry...`
+   - `[DEBUG] Retry response length: X characters`
+
+## 🎯 Expected Behavior
+
+✅ **Before Fix**: Responses cutting off at `**API`  
+✅ **After Fix**: Complete responses with automatic retry if truncation detected
+
+## 🔍 If Issues Persist
+
+If you still see truncation:
+1. Check the Developer Console for debug logs
+2. Note the exact pattern where truncation occurs
+3. The system should automatically retry and provide a complete response
+
+## 📝 Additional Notes
+
+- The retry mechanism adds ~2-3 seconds to response time when truncation is detected
+- Debug logging can be removed once the issue is confirmed fixed
+- The enhanced detection covers multiple truncation patterns beyond just `**API`

package.json

@@ -96,6 +96,10 @@
           "when": "editorHasSelection",
           "command": "CodeBuddy.generateMermaidDiagram",
           "group": "CodeBuddy"
+        },
+        {
+          "command": "CodeBuddy.codebaseAnalysis",
+          "group": "CodeBuddy"
         }
       ]
     },
@@ -135,6 +139,10 @@
       {
         "command": "CodeBuddy.generateMermaidDiagram",
         "title": "CodeBuddy. Generate Mermaid diagram."
+      },
+      {
+        "command": "CodeBuddy.codebaseAnalysis",
+        "title": "CodeBuddy. Analyze Codebase & Answer Questions"
       }
     ],
     "viewsContainers": {

src/application/constant.ts

@@ -17,6 +17,7 @@ export enum CODEBUDDY_ACTIONS {
   inlineChat = "CodeBuddy.inLineChat",
   restart = "CodeBuddy.restart",
   reviewPR = "CodeBuddy.reviewPR",
+  codebaseAnalysis = "CodeBuddy.codebaseAnalysis",
 }
 export enum COMMON {
   GROQ_CHAT_HISTORY = "groqChatHistory",

src/commands/architectural-recommendation.ts

@@ -0,0 +1,101 @@
+import * as vscode from "vscode";
+import { CodebaseUnderstandingService } from "../services/codebase-understanding.service";
+import { GeminiLLM } from "../llms/gemini/gemini";
+import { getAPIKeyAndModel } from "../utils/utils";
+
+export const architecturalRecommendationCommand = async () => {
+  const codebaseUnderstandingService =
+    CodebaseUnderstandingService.getInstance();
+  const apiKeyInfo = getAPIKeyAndModel("gemini");
+
+  if (!apiKeyInfo.apiKey || !apiKeyInfo.model) {
+    vscode.window.showErrorMessage("Gemini API key or model not configured.");
+    return;
+  }
+
+  const gemini = new GeminiLLM({
+    apiKey: apiKeyInfo.apiKey,
+    model: apiKeyInfo.model,
+  });
+
+  const question = await vscode.window.showInputBox({
+    prompt: "What would you like to know about this codebase?",
+    placeHolder:
+      "e.g., How is authentication handled? What are the API endpoints? I want to build an admin dashboard, what APIs do I need?",
+  });
+
+  if (!question) {
+    return;
+  }
+
+  await vscode.window.withProgress(
+    {
+      location: vscode.ProgressLocation.Notification,
+      title: "Analyzing codebase to answer your question...",
+      cancellable: false,
+    },
+    async (progress) => {
+      progress.report({ increment: 0 });
+
+      // Get comprehensive codebase context (not for webview, so use direct file links)
+      const context =
+        await codebaseUnderstandingService.getCodebaseContext(false);
+      progress.report({ increment: 50 });
+
+      const prompt = `
+You are a senior software architect and full-stack developer with extensive experience analyzing codebases. Based on the comprehensive codebase analysis below, provide detailed, accurate answers to the user's question.
+
+**Comprehensive Codebase Analysis:**
+${context}
+
+**User's Question:**
+${question}
+
+**Instructions:**
+1. **Analyze the question type**:
+   - If it's about HOW something is implemented (e.g., "How is authentication handled?"), focus on explaining existing patterns, files, and implementations
+   - If it's about BUILDING something new (e.g., "I want to build an admin dashboard"), provide architectural recommendations and implementation guidance
+   - If it's about UNDERSTANDING the codebase (e.g., "What are the main components?"), provide clear explanations of the architecture and structure
+
+2. **For implementation questions** ("How is X handled?"):
+   - Explain the existing patterns found in the codebase
+   - Reference specific files and code patterns
+   - Describe the flow and architecture
+   - Mention any dependencies or frameworks involved
+
+3. **For building/enhancement questions**:
+   - Provide specific, actionable recommendations
+   - Suggest exact endpoint paths, data models, and implementation approach
+   - Consider the existing architecture and recommend consistent patterns
+   - Include code examples where helpful
+
+4. **For general understanding questions**:
+   - Provide clear overviews of the codebase structure
+   - Explain the main architectural patterns
+   - Describe key components and their relationships
+
+5. **Always include**:
+   - Specific file references using the clickable links provided (e.g., [[1]], [[2]], etc.)
+   - Concrete examples from the actual codebase
+   - Clear, actionable next steps
+   - When referencing files or components, use the provided clickable references like [[1]](file_path) so users can navigate directly to the source
+
+**Focus on being accurate, specific, and helpful. Use the actual codebase analysis to provide concrete, evidence-based answers.**
+
+**CRITICAL: Provide a complete response. Do not truncate your answer. Ensure your response is fully finished and does not end abruptly mid-sentence or mid-word.**
+      `.trim();
+
+      const result = await gemini.generateText(prompt);
+      progress.report({ increment: 100 });
+
+      const panel = vscode.window.createWebviewPanel(
+        "codebaseAnalysis",
+        "Codebase Analysis & Recommendations",
+        vscode.ViewColumn.One,
+        {},
+      );
+
+      panel.webview.html = result;
+    },
+  );
+};