Overview

The Edexa contract is an ERC-721 Non-Fungible Token (NFT) smart contract that supports minting, burning, pausing, and unpausing of NFTs. It is built using OpenZeppelin's contracts for ERC721, Pausable, Ownable, and ERC721Burnable functionality.

Features

• Minting: The owner can mint new tokens with custom metadata (URI).
• Burning: Tokens can be destroyed (burned) by the owner.
• Pausable: The contract can be paused or unpaused, restricting or allowing transfers.
• Token URI: Each token has a unique URI for metadata.

Contract Details

• Contract Name: Edexa
• Token Name: edeXaNFTEngine
• Token Symbol: ENFT

Summary of Functions

• pause(): Pauses all token transfers (only callable by the owner).
• unpause(): Unpauses token transfers (only callable by the owner).
• safeMint(address to, string memory uri): Mints a new token and assigns it to the specified address with the provided URI (only callable by the owner).
• _beforeTokenTransfer(address from, address to, uint256 tokenId): Ensures transfers are paused when the contract is in the paused state.
• _burn(uint256 tokenId): Burns the specified token (override to include both ERC721 and ERC721URIStorage logic).
• tokenURI(uint256 tokenId): Retrieves the metadata URI of a token.

Testing & Deployment

Install Hardhat and Dependencies

npm install

Test

npx hardhat test

Deploy

npx hardhat run scripts/deploy.js --network <network-name>

You will need to configure the network settings in the hardhat.config.js file if deploying to a testnet.