Minting and Burning Tokens (Smart Contract)

minting and burning/Readme.md

@@ -0,0 +1,11 @@
+Creating a basic Contract with deployment and test cases of Minting and Burning Token s
+
+1. Admin can assign a Minter Role and Burner Role and revert back their roles too
+2.Minter can Mint tokens required
+3. Burner can Burn tokens 
+4. Transfer of token can be made and it will give Admin a gas fee on every 1 million transfer of token 
+
+Created using simpler framework Hardhat ...while u can also run and check on Replit 
+
+for Hardhat (install)
+npx hardhat 

minting and burning/Remix/MyToken.sol

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.0/contracts/token/ERC20/ERC20.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.0/contracts/access/AccessControl.sol";
+
+contract MyToken is ERC20, AccessControl {
+    bytes32 public constant MINTER_ROLE = keccak256("MINTER");
+    bytes32 public constant BURNER_ROLE = keccak256("BURNER");
+
+    address public admin;
+
+    constructor() ERC20("MyCustomToken", "MCT") {
+        admin = msg.sender;
+        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
+    }
+
+    function mint(address to, uint256 amount) external onlyRole(MINTER_ROLE) {
+        _mint(to, amount);
+    }
+
+    function burn(address from, uint256 amount) external onlyRole(BURNER_ROLE) {
+        _burn(from, amount);
+    }
+
+    function _transfer(address from, address to, uint256 value) internal virtual override {
+        if (totalSupply() > 1_000_000 * 10 ** decimals()) {
+            uint256 fee = (value * 1) / 100;
+            super._transfer(from, admin, fee);
+            value -= fee;
+        }
+        super._transfer(from, to, value);
+    }
+
+    function assignMinter(address account) external onlyRole(DEFAULT_ADMIN_ROLE) {
+        _grantRole(MINTER_ROLE, account);
+    }
+
+    function assignBurner(address account) external onlyRole(DEFAULT_ADMIN_ROLE) {
+        _grantRole(BURNER_ROLE, account);
+    }
+}