Crypto Lottery

This repository is intended to be the code base for the tutorial: https://dev.to/johbu/creating-a-lottery-with-hardhat-and-chainlink-385f

Test Smart Contract locally

1. Clone the repository

git clone https://github.com/johburn/crypto-lottery

2. Install dependencies

cd smartcontract
yarn install

3. Deploy the smart contract:

yarn run deploy:local

4. Run Tests:

yarn run test:unit

Test Smart Contract on Testnet

1. Clone the repository

git clone https://github.com/johburn/crypto-lottery

2. Install dependencies

cd ../smartcontract
yarn install

3. Copy .env.example into a .env and replace the values

cp .env.example .env

4. Deploy the smart contract:

yarn run deploy:testnet

5. Transfer some LINK to your wallet

go to https://faucets.chain.link/rinkeby

6. Fund your contract:

npx hardhat fund-link --contract <contract address> --fundamount 2000000000000000000 --network rinkeby

7. Run Tests:

yarn run test:integration

Test Smart Contract with Vite App and Postgres

1. Clone the repository

git clone https://github.com/johburn/crypto-lottery

2. Install Smart Contract dependencies

cd ../smartcontract
yarn install

3. Copy .env.example into a .env and replace the values

cp .env.example .env

4. Deploy the smart contract:

yarn run deploy:testnet

5. Transfer some LINK to your wallet

go to https://faucets.chain.link/rinkeby

6. Fund your contract:

npx hardhat fund-link --contract <contract address> --fundamount 2000000000000000000 --network rinkeby

7. Create a Lottery

npx hardhat create --contract <contract address> --seconds 600 --price 0.1 --network rinkeby

8. Install backend dependencies:

cd ../backend
yarn install

9. Create the database:

psql -f setup/scripts.sql

10. Copy .env.example into a .env and replace the values

cp .env.example .env

11. Copy contracts json to the backend:

\cp ../smartcontract/deployments/rinkeby/LotteryGame.json ../backend/src/contracts

12. Start the backend

yarn run start

13. Copy contracts json to the client:

\cp ../smartcontract/deployments/rinkeby/LotteryGame.json ../client/src/contracts

14. Start Vite App

yarn run dev

15. Participate

Go to localhost 3000 and click on the participate button

16. Declare the winner

npx hardhat declare-winner --contract <contract address> --lotteryid <lottery id> --network rinkeby