Add Katana features to the dummy Katana contract

contracts/Dummy.sol

@@ -4,21 +4,58 @@ pragma solidity 0.8.24;
 import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
 import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
 import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
 
 contract DKenshi is ERC20 {
  constructor() ERC20("dKenshi", "dKNS") {
  _mint(msg.sender, 1e10 * 10 ** decimals());
  }
 }
 
-contract DKatana is ERC721 {
- constructor() ERC721("dKatana", "dKAT") {
- for (uint i = 0; i < 444; i++) {
+contract DKatana is ERC721, ERC721Enumerable, Ownable {
+ constructor() ERC721("dKatana", "dKAT") Ownable(msg.sender) {}
+
+ function mint(uint fromId, uint toId) external onlyOwner {
+ for (uint i = fromId; i < toId; i++) {
  _mint(msg.sender, i);
  }
  }
 
  function _baseURI() internal pure override returns (string memory) {
  return "https://nft.kenshi.io/katana/";
  }
+
+ function tokensOfOwner(
+ address owner
+ ) external view returns (uint256[] memory) {
+ uint256 balance = balanceOf(owner);
+ uint256[] memory tokens = new uint256[](balance);
+ for (uint i = 0; i < balance; i++) {
+ tokens[i] = tokenOfOwnerByIndex(owner, i);
+ }
+ return tokens;
+ }
+
+ // The following functions are overrides required by Solidity.
+
+ function _update(
+ address to,
+ uint256 tokenId,
+ address auth
+ ) internal override(ERC721, ERC721Enumerable) returns (address) {
+ return super._update(to, tokenId, auth);
+ }
+
+ function _increaseBalance(
+ address account,
+ uint128 value
+ ) internal override(ERC721, ERC721Enumerable) {
+ super._increaseBalance(account, value);
+ }
+
+ function supportsInterface(
+ bytes4 interfaceId
+ ) public view override(ERC721, ERC721Enumerable) returns (bool) {
+ return super.supportsInterface(interfaceId);
+ }
 }