Never.Fight.Twice

• For the chainlink hackathon

An NFT battlefield that can double your NFT or lose all! Send an NFT to the pool, and have a chance to win another NFT free or lose your NFT! Challenge accepted?

How to play?

Send your NFT to the contract with your custom seed!

How to win?

If the VRF coordinator returns an odd number, and there is at least one NFT in the contract, the player wins. Otherwise, the player loses.

Live demo

Head to http://www.neverfighttwice.com:3000/ to try the live demo.

Deployed Contracts

Rinkeby

• NeverFightTwice: 0xb54D0C3EC3Ebc1dA8feCEBcca3A41997047737Aa
• NFTSimple: 0xF57e31B9177Ed0Aa62d4A7e26cEAA1DF439C04fe

Kovan

• NeverFightTwice: 0x2DC272108F86832b59eb46ecfD5c117601d6b58e
• NFTSimple: 0xB40698744C409069e3dbC90172dB91EDa0D02ac1

Mumbai Testnet

• NeverFightTwice: 0x578F794a5443703D51867b34EDD0173a17ce3925
• NFTSimple: 0x462b11b6e647C92a13d2f9F45fc91ac10bCb2538

Overview

The contracts are in contracts/ folder, named NeverFightTwice.sol and NFTSimple.sol. The deploy scripts are in scripts/. Check test/NeverFightTwice.test.js to understand the working flow. The core frontend code is in frontend/src/components/Dapp.js.

Installation

npm install 

Running the code

1. Duplicate the .env.example file and rename it to .env
2. Fill in the values in .env. You may need to go to https://infura.io/ to register an account and get your rpc url.
3. Run the frontend

cd frontend
npm install --legacy-peer-deps
npm start

4. Go to http://localhost:3000/ and switch to Rinkeby testnet on MetaMask
5. Click on the "Bet" button under your NFTs to bet.
6. Mint new NFTs in the bottom of the webpage to have more NFTs to bet!

If you wanna run the code on local network or deploy yourself

1. Compile the contracts

npx hardhat compile

2. Run the tests

npx hardhat test ./test/NeverFightTwice.test.js

3. Run Hardhat's testing network (if you reset the local network, remember to reset account in MetaMask > Settings > Advanced > Reset Account! Otherwise you will have nonce problem)

npx hardhat node

4. Deploy contracts (remember to npx hardhat compile if u change the contracts)

npx hardhat run scripts/deploy.js --network localhost
// npx hardhat run scripts/deploy_rinkeby.js --network rinkeby
// npx hardhat run scripts/deploy_kovan.js --network kovan
// npx hardhat run scripts/deploy_matic.js --network maticTestnet

5. Verify the contracts (skip this if you have run deploy_rinkeby.js, it's already written in the script)

// NeverFightTwice
npx hardhat verify --network rinkeby 0xb54D0C3EC3Ebc1dA8feCEBcca3A41997047737Aa 0xb3dCcb4Cf7a26f6cf6B120Cf5A73875B7BBc655B 0x01be23585060835e02b77ef475b0cc51aa1e0709 0x2ed0feb3e7fd2022120aa84fab1945545a9f2ffc9076fd6156fa96eaff4c1311

// NFTSimple
npx hardhat verify --network rinkeby 0xF57e31B9177Ed0Aa62d4A7e26cEAA1DF439C04fe 

// npx hardhat verify --network rinkeby DEPLOYED_CONTRACT_ADDRESS "Constructor argument 1" "Constructor argument 2"

6. Send LINK to NeverFightTwice contract!!!! [ALWAYS FORGET]
7. Import the private key of the first account into MetaMask and later connect wallet using this address.
8. Run the frontend

cd frontend
npm install
npm start

9. Go to http://localhost:3000/ and connect your MetaMask wallet.

Production deployment

Assuming the repo is cloned, node.js and PM2 are installed, run the following script for first deployment

chmod +x *deploy.sh
./firstdeploy.sh

Then everytime there is an update, we can update the app with:

./updatedeploy.sh
```
This script can be automated with tools such as `crontab`. The script will exit if tehre is no update.


## Notes 
This project uses the template: https://github.com/pappas999/chainlink-hardhat-box

## TODO
- Integrate IPFS
- Generate random pixel images when mint 
- See how opensea api can speed up to update the NFT balance after mint
- Add waiting for the bet result screen 
- A button to generate a random seed for the user
- Find out why it's slow when entering random seed on frontend UI
- NFT during bet should be stored in somewhere with some animation