marketplace

marketplace.sol

@@ -0,0 +1,34 @@
+//SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.13;
+
+import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.0.0/contracts/token/ERC20/IERC20.sol";
+
+
+contract marketplaceItem1{
+    mapping(address => bool) public alreadyBought;
+    uint public price = 10;
+    address public owner = payable(msg.sender);
+
+    IERC20 public usdcFToken = IERC20(0xd9145CCE52D386f254917e481eB44e9943F39138);
+    IERC20 public usdtFToken = IERC20(0xD7ACd2a9FD159E69Bb102A1ca21C9a3e3A5F771B);
+
+    function payInUSDC() public returns(bool){
+       require(alreadyBought[msg.sender]==false,"you already bought");
+       usdcFToken.transferFrom(msg.sender,owner,price);
+       alreadyBought[msg.sender] = true;
+       return alreadyBought[msg.sender];
+    }
+
+    function payInUSDT() public returns(bool){
+       require(alreadyBought[msg.sender]==false,"you already bought");
+       usdtFToken.transferFrom(msg.sender,owner,price);
+       alreadyBought[msg.sender] = true;
+       return alreadyBought[msg.sender];
+    }
+
+    function payInETH() public returns(bool){
+      //get chainlink data
+      return true;
+    }
+}

sampleUSDC.sol

@@ -0,0 +1,11 @@
+//SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.13;
+
+import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.0.0/contracts/token/ERC20/ERC20.sol";
+contract usdc is ERC20("testUSDC","testUSDC"){
+
+    function mintTwenty() public{
+        _mint(msg.sender,20);
+    }
+}

sampleUSDT.sol

@@ -0,0 +1,11 @@
+//SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.13;
+
+import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.0.0/contracts/token/ERC20/ERC20.sol";
+contract usdt is ERC20("testUSDT","testUSDT"){
+
+    function mintTwenty() public{
+        _mint(msg.sender,20);
+    }
+}