ZeroEkkusu / smartcontract-lottery

Overly documented, example Brownie project

About

This is an example of a full scale smart contract project, made using Solidity and Brownie. You can use this repo as a refresher on how to use Brownie and write smart contracts.

How the contract works:

1. Anyone can enter the lottery with 50 USD or more worth of ETH
2. The owner will choose when the lottery is over
3. The lottery will select one random winner and transfer the funds

Todo

• Further decentralize using Chainlink Keepers

Setup

Note: This isn't a guide on how to set up system for development! For that, see PatrickAlphaC/smartcontract-lottery, on which this project is based.

To set up your new project, either:

Use chainlink-mix

brownie bake chainlink-mix && mv chainlink <your_project_name>

Or start from scratch

brownie init

Other files

Create a .env file inside your project's directory and add the following

export PRIVATE_KEY_1 = <YOUR_PRIVATE_KEY_1>
export PRIVATE_KEY_2 = <YOUR_PRIVATE_KEY_2>
export WEB3_INFURA_PROJECT_ID = <YOUR_PROJECT_ID>
export ETHERSCAN_TOKEN = <YOUR_API_TOKEN>

To encrypt your private key, add it to Brownie instead

brownie accounts new <choose_account_id>

Usage

Compile

brownie compile

Test

brownie test --network <choose_network> -s

Deploy

brownie run scripts/deploy_lottery.py --network <choose_network>