NFT Minting Dapp

The NFT Minting contract is an Ethereum smart contract written in Solidity that implements an ERC-721 compliant non-fungible token (NFT) collection with a theme related to the popular manga and anime series "Attack on Titan" (Shingeki no Kyojin). This documentation provides an overview of the contract's structure and functionality.

SPDX-License-Identifier

This contract is released under the Unlicense, which essentially means it is in the public domain with no copyright restrictions.

Prerequisites and Dependencies

This contract relies on various external libraries and smart contracts. The following dependencies are imported at the beginning of the contract:

• @openzeppelin/contracts/utils/Strings.sol: A library for working with strings.
• @openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol: A contract implementing the ERC-721 standard for NFTs with URI storage.
• @openzeppelin/contracts/utils/Counters.sol: A library for managing counters.
• "hardhat/console.sol": A library for logging messages during contract execution.
• Base64.sol: A custom library for encoding SVG data in base64 format.

Contract Overview

Contract Name and Symbol

The contract is named "ShingekiNoKyojinNFT" with the symbol "AOTNFT," representing the "Attack on Titan" NFT collection.

State Variables

• _tokenIds: A counter to keep track of the current token ID.
• totalNumberOfTokens: The total number of tokens minted.

SVG Templates and Word Arrays

The contract includes SVG templates and arrays of words used to generate the random names and SVGs for the NFTs.

Events

• NFTMinted: An event emitted when a new NFT is minted, containing the minter's address and the token ID.

Functions

pickRandomFirstWord(uint256 tokenId)

This function selects a random first word for generating the NFT name based on the given tokenId.

pickRandomSecondWord(uint256 tokenId)

Similar to pickRandomFirstWord, this function selects a random second word for generating the NFT name.

pickRandomThirdWord(uint256 tokenId)

This function selects a random third word for generating the NFT name.

random(string memory input)

An internal pure function to generate a random number based on an input string.

makeAnEpicNFT()

The main function for minting a new NFT. It creates a unique name and SVG for the NFT and mints it to the caller's address.

totalTokens()

A function to query the total number of tokens minted in the collection.

Usage

1. Deploy the contract to the Ethereum network.
2. Call the makeAnEpicNFT() function to mint a new NFT with a unique name and SVG.

Events

• NFTMinted: Emitted when a new NFT is successfully minted. Contains the minter's address and the token ID of the newly minted NFT.

License

This contract is released under the Unlicense, making it available for use without copyright restrictions.