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Marketplace.sol
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Marketplace.sol
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//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/ERC721.sol";
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol";
contract Acoin is ERC20 {
constructor() ERC20("Acoin","AC") public {
_mint(msg.sender,10000);
}
}
contract Hats is ERC721 {
constructor() ERC721("Hats","HAT") public {
}
}
contract Marketplace is Hats{
address AcoinInstance;
address HatInstance;
IERC721 AcoinPayment;
struct HatSaleItems{
uint id;
uint256 price;
string hatColour;
address hatOwner;
}
HatSaleItems[] public items;
struct SaleCounter{
string colour;
uint256 salePrice;
}
SaleCounter[] public hatsale;
mapping(string => bool) _hatExists;
mapping(uint256 => HatSaleItems[]) _hatValue;
uint256 hatId = 1;
uint public amount;
fallback () external {}
constructor(address add_erc20, address add_erc721) public {
AcoinInstance = add_erc20;
HatInstance = add_erc721;
}
function AddHatForSale(string memory _colour, uint256 _price) public {
require(!_hatExists[_colour]);
require(_price<100);
items.push(HatSaleItems(hatId,_price,_colour,msg.sender));
hatsale.push(SaleCounter(_colour,_price));
// _mint(msg.sender, hatId);
// transferFrom(msg.sender,address(this), hatId);
_hatExists[_colour] = true;
hatId++;
}
function HatsForSale() public view returns(SaleCounter[] memory){
return hatsale;
}
function BuyHat(uint _hatid) public {
amount = FindPrice(_hatid);
address _to = FindOwner(_hatid);
AcoinPayment = IERC721(AcoinInstance);
AcoinPayment.transferFrom(msg.sender,address(this),1);
AcoinPayment.transferFrom(msg.sender,_to,amount-1);
_mint(msg.sender, _hatid);
// transferFrom(_to,msg.sender, _hatid);
delete items[_hatid-1];
delete hatsale[_hatid-1];
}
function FindPrice(uint _hatid) public view returns(uint256) {
for(uint i = 0; i < items.length; i++){
if(items[i].id == _hatid){
return(items[i].price);
}
}
}
function FindOwner(uint _hatid) public view returns(address) {
for(uint i = 0; i < items.length; i++){
if(items[i].id == _hatid){
return(items[i].hatOwner);
}
}
}
}