update prompts

src/app/api/generate/route.ts

@@ -2,11 +2,13 @@ import { NextResponse } from "next/server";
 import { getGeminiModel } from "@/lib/gemini";
 import { getRepoData, getRepoContents } from "@/lib/octokit";
 
-// Ensure API keys are read at runtime
 export const dynamic = "force-dynamic";
 
+/**
+ * AI README Generation Endpoint
+ * Optimized for data accuracy and clean prompt interpolation.
+ */
 export async function POST(req: Request) {
-  // 1. Safe JSON Body Parsing
   let rawUrl: string;
   try {
     const body = await req.json();
@@ -16,7 +18,6 @@ export async function POST(req: Request) {
   }
 
   try {
-    // 2. Strict URL Validation
     const trimmedUrl = rawUrl?.trim();
     if (!trimmedUrl) {
       return NextResponse.json({ error: "GitHub URL is required" }, { status: 400 });
@@ -29,12 +30,10 @@ export async function POST(req: Request) {
       return NextResponse.json({ error: "Please provide a valid URL" }, { status: 400 });
     }
 
-    // Hostname Guard
     if (parsedUrl.hostname !== "github.com" && parsedUrl.hostname !== "www.github.com") {
       return NextResponse.json({ error: "Only GitHub URLs are supported" }, { status: 400 });
     }
 
-    // Extract Owner and Repo from path
     const pathSegments = parsedUrl.pathname.split("/").filter(Boolean);
     const owner = pathSegments[0];
     const repo = pathSegments[1];
@@ -43,41 +42,81 @@ export async function POST(req: Request) {
       return NextResponse.json({ error: "URL must include owner and repository name" }, { status: 400 });
     }
 
-    // 3. Parallel Data Fetching
     const [repoInfo, repoContents] = await Promise.all([
       getRepoData(owner, repo),
       getRepoContents(owner, repo)
     ]);
 
-    // 4. Type-Safe File Mapping (Fixes the 'any' linting error)
-    // We define the shape { name: string } inline to satisfy ESLint
-    const fileList = Array.isArray(repoContents) && repoContents.length > 0 
-      ? repoContents.map((f: { name: string }) => f.name).join(", ") 
-      : "Standard repository structure";
+    const files = Array.isArray(repoContents) ? repoContents.map((f: { name: string }) => f.name) : [];
+    const fileListString = files.length > 0 ? files.join(", ") : "Standard repository structure";
+
+    // Tech Stack detection logic
+    const hasNode = files.includes("package.json");
+    const hasPython = files.includes("requirements.txt") || files.includes("setup.py");
+    const hasDocker = files.includes("Dockerfile") || files.includes("docker-compose.yml");
+
+    // Fix: Cleanly joined Tech Stack labels
+    const stackLabels = [
+      hasNode && "Node.js Environment",
+      hasPython && "Python Environment",
+      hasDocker && "Containerized"
+    ].filter(Boolean).join(", ") || "Generic Software Environment";
+
+    // Fix: Dynamic License detection
+    const licenseName = repoInfo?.license?.name || repoInfo?.license?.spdx_id || "the repository's license file";
 
-    // 5. Initialize Gemini 2.5
     const model = getGeminiModel();
 
-    // 6. The "Expert Prompt" with Fallbacks
+    // Fix: Prompt updated with neutral fallbacks and dynamic license
     const prompt = `
-      You are an expert Technical Writer. Generate a professional README.md for:
-
-      Name: ${repo}
-      Description: ${repoInfo?.description || "A modern software project."}
-      Primary Language: ${repoInfo?.language || "Not specified"}
-      Root Directory Files: ${fileList}
-
-      Requirements:
-      - Include professional SVG badges from shields.io.
-      - Create a visual "Directory Structure" section (tree style).
-      - Include "Features", "Installation", and "Usage" sections.
-      - If 'package.json' exists, provide Node.js installation steps.
-      - Ensure a welcoming, professional developer-centric tone.
-
-      Return ONLY the Markdown content.
+**Role**: You are a Principal Solutions Architect and World-Class Technical Writer. 
+**Task**: Generate a professional, high-conversion README.md for the GitHub repository: "${repo}".
+
+---
+### 1. PROJECT CONTEXT (VERIFIED DATA)
+- **Project Name**: ${repo}
+- **Description**: ${repoInfo?.description || "No description provided."}
+- **Primary Language**: ${repoInfo?.language || "Language unknown"}
+- **Detected Root Files**: ${fileListString}
+- **Tech Stack Context**: ${stackLabels}
+
+---
+### 2. STRICT README STRUCTURE REQUIREMENTS
+
+1. **Visual Header**:
+   - Center-aligned H1 with project name.
+   - A compelling 1-sentence tagline describing the **Value Proposition**.
+   - A centered row of Shields.io badges (Build, License, PRs Welcome, Stars).
+
+2. **The Strategic "Why" (Overview)**:
+   - **The Problem**: Use a blockquote to describe the real-world pain point this project solves.
+   - **The Solution**: Explain how this project provides a superior outcome for the user.
+
+3. **Key Features**:
+   - Minimum 5 features. Use emojis and focus on **User Benefits**.
+
+4. **Technical Architecture**:
+   - Provide a table of the tech stack: | Technology | Purpose | Key Benefit |.
+   - Create a tree-style directory structure code block using 📁 for folders and 📄 for files based on the file manifest provided.
+
+5. **Operational Setup**:
+   - **Prerequisites**: List required runtimes.
+   - **Installation**: Provide step-by-step terminal commands. 
+     ${hasNode ? "- Use npm/yarn/pnpm since package.json was detected." : ""}
+     ${hasPython ? "- Use pip/venv since Python markers were detected." : ""}
+   - **Environment**: If any .env or config files are in the manifest, include a configuration section.
+
+6. **Community & Governance**:
+   - Professional "Contributing" section (Fork -> Branch -> PR).
+   - Detailed "License" section: Reference ${licenseName} and provide a summary of permissions.
+
+---
+### 3. TONE & STYLE
+- **Tone**: Authoritative, polished, and developer-centric.
+- **Visuals**: Extensive use of Markdown formatting.
+- **Constraint**: Return ONLY the raw Markdown. No conversational filler.
     `;
 
-    // 7. AI Generation
     const result = await model.generateContent(prompt);
     const response = await result.response;
     const markdown = response.text();