Jb branch

contracts/StudentReg.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract StudentRegistry {
+    struct Student {
+        string name;
+        uint256 age;
+        string course;
+        string[] interests;
+    }
+
+    mapping(address => Student) private students;
+    address[] private studentAddresses;
+    address public owner;
+
+    event StudentRegistered(address indexed studentAddress, string name, uint256 age, string course, string[] interests);
+    event StudentUpdated(address indexed studentAddress, string name, uint256 age, string course, string[] interests);
+
+    modifier onlyOwner() {
+        require(msg.sender == owner, "Only the owner can perform this action");
+        _;
+    }
+
+    constructor() {
+        owner = msg.sender;
+    }
+
+    function registerStudent(string memory _name, uint256 _age, string memory _course, string[] memory _interests) public {
+        require(bytes(_name).length > 0, "Name cannot be empty");
+        require(_age > 0, "Age must be greater than zero");
+        require(bytes(_course).length > 0, "Course cannot be empty");
+
+        students[msg.sender] = Student(_name, _age, _course, _interests);
+        studentAddresses.push(msg.sender);
+        emit StudentRegistered(msg.sender, _name, _age, _course, _interests);
+    }
+
+    function updateStudent(string memory _name, uint256 _age, string memory _course, string[] memory _interests) public {
+        require(bytes(students[msg.sender].name).length > 0, "Student not registered");
+
+        students[msg.sender] = Student(_name, _age, _course, _interests);
+        emit StudentUpdated(msg.sender, _name, _age, _course, _interests);
+    }
+
+    function getStudent(address _studentAddress) public view returns (string memory, uint256, string memory, string[] memory) {
+        require(bytes(students[_studentAddress].name).length > 0, "Student not found");
+        Student memory student = students[_studentAddress];
+        return (student.name, student.age, student.course, student.interests);
+    }
+
+    function getAllStudents() public view onlyOwner returns (address[] memory) {
+        return studentAddresses;
+    }
+}

contracts/counter.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract Counter {
+    uint256 private count;
+    address public owner;
+
+    event CounterIncremented(uint256 newCount);
+    event CounterDecremented(uint256 newCount);
+
+    constructor() {
+        owner = msg.sender;
+        count = 0;
+    }
+
+    modifier onlyOwner() {
+        require(msg.sender == owner, "Only the owner can modify the counter");
+        _;
+    }
+
+    function increment() public onlyOwner {
+        count++;
+        emit CounterIncremented(count);
+    }
+
+    function decrement() public onlyOwner {
+        require(count > 0, "Counter cannot be negative");
+        count--;
+        emit CounterDecremented(count);
+    }
+
+    function getCount() public view returns (uint256) {
+        return count;
+    }
+}

contracts/counterapp/frontend/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# env files (can opt-in for committing if needed)
+.env*
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts

contracts/counterapp/frontend/README.md

@@ -0,0 +1,36 @@
+This is a [Next.js](https://nextjs.org) project bootstrapped with [`create-next-app`](https://nextjs.org/docs/app/api-reference/cli/create-next-app).
+
+## Getting Started
+
+First, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
+
+This project uses [`next/font`](https://nextjs.org/docs/app/building-your-application/optimizing/fonts) to automatically optimize and load [Geist](https://vercel.com/font), a new font family for Vercel.
+
+## Learn More
+
+To learn more about Next.js, take a look at the following resources:
+
+- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+
+You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js) - your feedback and contributions are welcome!
+
+## Deploy on Vercel
+
+The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+
+Check out our [Next.js deployment documentation](https://nextjs.org/docs/app/building-your-application/deploying) for more details.

contracts/counterapp/frontend/app/globals.css

@@ -0,0 +1,24 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+:root {
+  --background: #ffffff;
+  --foreground: #171717;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --background: #0a0a0a;
+    --foreground: #ededed;
+  }
+}
+
+.body {
+  background-image: 
+    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
+    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
+  background-size: 100px 100px;
+
+  font-family: Arial, Helvetica, sans-serif;
+}

contracts/counterapp/frontend/app/layout.tsx

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+import type { Metadata } from "next";
+import { Geist, Geist_Mono } from "next/font/google";
+import "./globals.css";
+
+const geistSans = Geist({
+  variable: "--font-geist-sans",
+  subsets: ["latin"],
+});
+
+const geistMono = Geist_Mono({
+  variable: "--font-geist-mono",
+  subsets: ["latin"],
+});
+
+export const metadata: Metadata = {
+  title: "Create Next App",
+  description: "Generated by create next app",
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <html lang="en">
+      <body
+        className={`${geistSans.variable} ${geistMono.variable} antialiased`}
+      >
+        {children}
+      </body>
+    </html>
+  );
+}

contracts/counterapp/frontend/app/page.tsx

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+"use client";
+import { useState } from "react";
+
+export default function Counter() {
+  const [count, setCount] = useState(0);
+
+  const getCount = () => {
+    alert(`Current Count: ${count}`);
+  };
+
+  return (
+    <div className="min-h-screen bg-blue -100">
+      {/* Header */}
+      <header className="flex justify-between items-center p-4 bg-white shadow-md">
+        <h1 className="text-2xl font-bold">JB-Counter</h1>
+        <button className="px-4 py-2 bg-black -500 text-white rounded-lg">
+          Connect Wallet
+        </button>
+      </header>
+
+      {/* Counter Section */}
+      <div className="flex flex-col items-center justify-center mt-20">
+        <div className="p-6 bg-white shadow-lg rounded-lg text-center">
+          <h1 className="text-4xl font-bold mb-4">{count}</h1>
+          <div className="space-x-3">
+            <button 
+              onClick={() => setCount(count + 1)} 
+              className="px-4 py-2 bg-green-500 text-white rounded-lg"
+            >
+              Increase
+            </button>
+            <button 
+              onClick={() => setCount(count - 1)} 
+              className="px-4 py-2 bg-red-500 text-white rounded-lg"
+            >
+              Decrease
+            </button>
+            <button 
+              onClick={() => setCount(0)} 
+              className="px-4 py-2 bg-gray-500 text-white rounded-lg"
+            >
+              Reset
+            </button>
+            <button 
+              onClick={getCount} 
+              className="px-4 py-2 bg-blue-500 text-white rounded-lg"
+            >
+              Get Count
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}

contracts/counterapp/frontend/next.config.ts

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+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  /* config options here */
+};
+
+export default nextConfig;