Foundry Smart Contract

This repository contains the Foundry smart contract, a Solidity-based system for user registration, daily check-ins, XP point management, and booster purchases.

Table of Contents

• Overview
• Features
• Contract Details
• Usage
• Owner Functions
• Security
• License

Overview

The Foundry contract implements a gamified system where users can register, perform daily check-ins to earn XP points, purchase boosters to increase their XP earnings, and convert their XP points to NZT.

Features

• User registration
• Daily check-ins with increasing rewards for consecutive days
• Booster system to multiply XP earnings
• XP to NZT conversion
• Owner-controlled pricing and conversion rates

Contract Details

• Solidity Version: ^0.8.16
• License: MIT

Usage

User Functions

1. Register User

   function registerUser() public

   Registers a new user in the system.

2. Daily Check-in

   function dailyCheckIn() public

   Allows users to check in daily and earn XP points.

3. Purchase Booster

   function purchaseBooster(uint256 plan) public payable

   Enables users to purchase a booster plan to increase XP earnings.

4. Withdraw XP

   function withdrawXP() public

   Converts user's XP points to NZT and transfers it to their account.

5. Fetch User Info

   function fetchUserInfo(address _address) public view returns(User memory)

   Retrieves user information for a given address.

Owner Functions

1. Change Booster Prices

   function changeBoosterPrices(uint256[5] memory newPrices) public onlyOwner

2. Change XP Conversion Rate

   function changeXpConversionRate(uint256 newRate) public onlyOwner

3. Deposit NZT

   function depositNZT() public payable onlyOwner

4. Withdraw NZT

   function withdrawNZT(uint256 amount) public onlyOwner

Security

• The contract uses onlyOwner modifier to restrict access to sensitive functions.
• Booster duration is set to 28 days and is checked before application.
• Proper checks are implemented to prevent reentrancy and other common vulnerabilities.

License

This project is licensed under the MIT License.