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NFTs booster packs

This project was created as part of the gitcoin contest https://gitcoin.co/hackathon/0x-hack?org=smartcontractkit

These are the bounties participating:

EthWorks

https://gitcoin.co/issue/EthWorks/useDApp/178/100025570

https://gitcoin.co/issue/EthWorks/useDApp/176/100025566

Polygon

https://gitcoin.co/issue/maticnetwork/matic-bounties/21/100025715

Chainlink

https://gitcoin.co/issue/smartcontractkit/chainlink/4375/100025683

About

DApp to create and buy NFTs booster packs. Made with useDApp for building the platform, Chainlink to get a random number used for deciding the content of the pack and deployed to Polygon's Mumbai testnetwork

Smart contracts deployed to Polygon's Mumbai testnet:

TokenPack contract Address: 0xcE0378D09Cfe190Bd4220Ed1329669a1704fF958

Token contract address: 0xf46A949f10eCb8bBd42c8cCd33399727bD1ACb71

Blueprint contract address: 0x0C0BF23c57140A208c6aDE71CD59d519C0eEC433

Demo

Live working demo: https://nft-pack.vercel.app/boosters

Vide Demo: https://youtu.be/d_ibhxWMgI8

Run localy

First we install the dependencies

yarn

You will need 3 parallel terminals:

Terminal 1: hardhat local node

Run the following to start a local node fork of mumbai polygon testnet

npx hardhat node

The terminal will display some accounts which you can use to import them to Metamask for testing

Terminal 2: Deployment

Now that the network is running, you need to deploy the contract to the running Hardhat Network node

npx hardhat run scripts/deploy.ts --network localhost

Terminal 3: Frontend

First make sure the frontend/src/index/js is pointing to the correct chain and URL

const config = {
  readOnlyChainId: ChainId.Hardhat,
  readOnlyUrls: {
    [ChainId.Hardhat]: "http://127.0.0.1:8545",
  },
  supportedChains: [[ChainId.Hardhat]],
  multicallAddresses: {
    [ChainId.Hardhat]: "0x935Bfe9AfaA2Be26049ea4EDE40A3A2243361F87",
  },
};

To run the local server to serve the react application, run the following commands

# Navigate to frontend app
cd frontend
yarn start

Mocking VRFCoordinator locally

We can mock the VRFCoordinator for testing by deploying our own coordinator and execute the fulfillment. The deployment script already deploys the coordinator mock for testnets, just run the following command to fulfill a request

npx hardhat vrf-callback --request 0x60b962966c755228e0c0b987ebfdfc6836ba45cda53cb25cea7f1bfc134da232 --coordinator 0xc1EeD9232A0A44c2463ACB83698c162966FBc78d --tokenpack 0x12456Fa31e57F91B70629c1196337074c966492a --randomness 777 --network localhost

replace

--request : for the requestId to simulate (it's thrown in the browsers console when buying pack)

--coordinator : the coordinator address, which was logged in the console when the deployment script was executed

-- tokenpack : the address of the TokenPack contract which was logged in the console when the deployment script was executed

-- randomness : the random number to send to the consumer (TokenPack contract)

Pending stuff for the future

  • refactor code, there is a lot of shitty and duplicated code that can be improved because I was in a hurry and in learning process
  • Adjust income flow, who gets how much when a pack is bought?
  • Functions to retrieve funds from smart contract (both MATIC and LINK tokens)