/Chainlink-bootcamp-day2

Primary LanguageJavaScriptMIT LicenseMIT

Chainlink-bootcamp-day2

This the sample codes for Chainlink 2-day bootcamp day2. In day 2 of the bootcamp, you will use Chainlink Functions to feed data from external API to NFT smart contract you finished in day 1.

Prerequisite

The NFT smart contract is different from day 1. Redploy the NFT smart contract and make it work with VRFv2Consumer.

Instructions

  • Go to remix and deploy the contracts NFTDogs.sol and VRFv2Consumer.sol which is saved in the /contracts in this repo.
  • Add consumer in vrf subscription and mint an NFT like what we did in day 1.
  • Clone the repository using command git clone https://github.com/QingyangKong/Chainlink-bootcamp-day2.git
  • Head to directory in your environment
  • Install all depedencies using command npm install
  • Set environment variable for
    • npx env-enc set-pw and enter a password
    • npx env-enc set add POLYGONSCAN_API_KEY, PRIVATE_KEY and POLYGON_MUMBAI_RPC_URL.
  • Get free Apikey from ACCUWeather, and then upadte the key in the file API-request-example.js.
  • Run npx hardhat functions-deploy-client --network polygonMumbai --verify true to deploy smart contract FunctionsConsumer.sol and get address of smart contract FunctionsConsumer.
  • Go to polygonscan and find the smart contract just deployed, and call function setNft to set NFT address((the nft address we redeployed)).
  • Run npx hardhat functions-sub-create --network polygonMumbai --amount 5 --contract <FunctionsConsumer address> get a subId. (Please note you have to apply for whitelist at https://chainlinkcommunity.typeform.com/requestaccess and the process only takes about 45 seconds)
  • Run npx hardhat functions-request --network polygonMumbai --contract <Functiosn Consumer address> --subid <Functions subId from last step> --gaslimit 300000

Tips

This repository is a fork from starter-kit. Please check the official starter kit to learn more.