pods

contracts/IERC20Pods.sol

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.0;
+
+import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+
+interface IERC20Pods is IERC20 {
+    event PodAdded(address account, address pod);
+    event PodRemoved(address account, address pod);
+
+    function podsLimit() external view returns(uint256);
+    function podCallGasLimit() external view returns(uint256);
+    function hasPod(address account, address pod) external view returns(bool);
+    function podsCount(address account) external view returns(uint256);
+    function podAt(address account, uint256 index) external view returns(address);
+    function pods(address account) external view returns(address[] memory);
+    function podBalanceOf(address pod, address account) external view returns(uint256);
+
+    function addPod(address pod) external;
+    function removePod(address pod) external;
+    function removeAllPods() external;
+}

contracts/Lock2.sol

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.9;
+
+// Uncomment this line to use console.log
+// import "hardhat/console.sol";
+
+contract Lock2 {
+    uint public unlockTime;
+    address payable public owner;
+
+    event Withdrawal(uint amount, uint when);
+
+    constructor(uint _unlockTime) payable {
+        require(
+            block.timestamp < _unlockTime,
+            "Unlock time should be in the future"
+        );
+
+        unlockTime = _unlockTime;
+        owner = payable(msg.sender);
+    }
+
+    function withdraw() public {
+        // Uncomment this line, and the import of "hardhat/console.sol", to print a log in your terminal
+        // console.log("Unlock time is %o and block timestamp is %o", unlockTime, block.timestamp);
+
+        require(block.timestamp >= unlockTime, "You can't withdraw yet");
+        require(msg.sender == owner, "You aren't the owner");
+
+        emit Withdrawal(address(this).balance, block.timestamp);
+
+        owner.transfer(address(this).balance);
+    }
+}

package.json

@@ -1,6 +1,7 @@
 {
   "dependencies": {
-    "hardhat": "^2.15.0"
+    "hardhat": "^2.15.0",
+    "@openzeppelin/contracts": "4.8.2"
   },
   "devDependencies": {
     "@nomicfoundation/hardhat-chai-matchers": "^2.0.0",

yarn.lock

@@ -676,6 +676,11 @@
     "@nomicfoundation/solidity-analyzer-win32-ia32-msvc" "0.1.1"
     "@nomicfoundation/solidity-analyzer-win32-x64-msvc" "0.1.1"
 
+"@openzeppelin/[email protected]":
+  version "4.8.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.8.2.tgz#d815ade0027b50beb9bcca67143c6bcc3e3923d6"
+  integrity sha512-kEUOgPQszC0fSYWpbh2kT94ltOJwj1qfT2DWo+zVttmGmf97JZ99LspePNaeeaLhCImaHVeBbjaQFZQn7+Zc5g==
+
 "@scure/base@~1.1.0":
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/@scure/base/-/base-1.1.1.tgz#ebb651ee52ff84f420097055f4bf46cfba403938"