Lottery Smart Contract

Project Overview

This project serves educational purposes, offering a web application that allows users to place bets on randomly generated numbers using Ether. A smart contract manages the bets, receives Ether, and determines the winning number randomly. The participant with the correct number receives the accumulated Ether sum.

The project is divided into 3 projects:

• Lottery Smart Contract*: This handle the bets and decided the winner of the bets. Also reward the winner with all money available;
• Back-end Lottery Smart Contract: This handle the requests from the user and send it to the smart contract.
• Front-end Lottery Smart Contract: This is the user interface that the use perform actions.

For this project I used

• Solidity: Solidity is the programming language for writing smart contracts on the Ethereum blockchain. Learn more about Solidity.
• Ganache: Ganache is employed to run the Ethereum blockchain locally. More details about Ganache can be found.
• Truffle: Truffle is the chosen framework for smart contract development.

Installation and Execution Instructions

1. Initialize Truffle project:

npm install -g truffle

truffle init

2. Create a new Solidity file in the contracts folder.

3. Compile the Solidity program:

truffle compile

4. Migrate the smart contract:

truffle migrate

5. Access the Truffle console:

truffle console

6. Unit testing of the contract

truffle test

Running the contract

Whether you followed the previous steps: 3, 4 and 5.

You are now at truffle console right, so type these commands:

• let lottery = await Lottery.deployed()
• lottery.contractName()

As output you should see the message: The Lottery Contract is OnLine