Mehrdadr01 / NFT-Minting

NFT

simple NFT

• inherit from open zeppelin ERC721 contract

1. constructor 
    - just a pug dog 
2. minNFT
    - trigger _safeMint to mint a NFT
3. tokenURI 
    - override the function to just return the tokenURI that we hard coded 

• deploy and test
  • using hardhat-deploy plugin

Random IPFS NFT

1. we want to mint a NFT but using chainLink VRF to generate a random number
2. then use that number to create a random NFT
3. we have 3 dog breed

• PUG : rare --> [0-10]
• SHIBA_INU : less rare --> [10-30]
• GAMAL : common --> [30-100 ]

4. user have to pay fee to mint a NFT
5. owner can withdraw ETH

implementation

• imports :

- chain link VRF so :
    - VRFConsumerBaseV2
    - VRFCoordinatorV2Interface
- open zeppelin :
    - ERC721
    - ERC721URIStorage
    - Ownable 

• functions :

  • requestNFT()
  • requestRandomWords()
  • fulfillRandomWords()
  • getChanceArray()
  • getBreedFromModdedRNG()

• Details :

- we create requestNFT and requestRandomWords to fulfillRandomWords (cause VRF is 2 step process)
- then create a mapping to link our requestId for our random number and generated NFT (set value in requestNFT and use in fulfillRandomWords)
- and after that implement the rarity functionality by getChanceArray && getBreedForModdedRNG functions and added to fulfillRandomWords function 
- then change ERC721 to ERC721URIStorage contract to have _setTokenURI and (tokenId, tokenURIs ) --> tokenURIs : array of diff dog breed in IPFS 
- and then using Ownable for withdraw and implement mintFee in requestNFT function 
- lastly we add our getter functions and have 2 event at requesting NFT and minting NFT 

deploy

• so far we didn't use IPFS || add any image , metaData to IPFS

fist things first :

• cause we use chain link VRF we have use mocks for local development
• deploy our randomIpfsNft contract : same old ame old but :
  • for the contract args with need the tokenURIs :
  • so we have to save our data to IPFS (I. images II. metadata )
• getting our hashes from IPFS
• using IPFS :

1. run our IPFS node
2. Pinata
3. Storage.nft

Dynamic svg NFT