Create ERC20Token.sol

blockchain_integration/pi_network/contracts/ERC20Token.sol

@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/security/Pausable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Pausable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Snapshot.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Votes.sol";
+
+contract ERC20Token is ERC20, Ownable, Pausable, ERC20Burnable, ERC20Pausable, ERC20Snapshot, ERC20Votes {
+    // Events
+    event Minted(address indexed to, uint256 amount);
+    event Burned(address indexed from, uint256 amount);
+
+    constructor(uint256 initialSupply) ERC20("PiToken", "PIT") {
+        _mint(msg.sender, initialSupply);
+    }
+
+    // Mint new tokens
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+        emit Minted(to, amount);
+    }
+
+    // Override the _beforeTokenTransfer hook to implement pausable functionality
+    function _beforeTokenTransfer(address from, address to, uint256 amount) internal whenNotPaused override(ERC20, ERC20Pausable) {
+        super._beforeTokenTransfer(from, to, amount);
+    }
+
+    // Pause the contract
+    function pause() public onlyOwner {
+        _pause();
+    }
+
+    // Unpause the contract
+    function unpause() public onlyOwner {
+        _unpause();
+    }
+
+    // Snapshot the current state of the token
+    function snapshot() public onlyOwner returns (uint256) {
+        return _snapshot();
+    }
+
+    // Override required by Solidity for ERC20Votes
+    function _afterTokenTransfer(address from, address to, uint256 amount) internal override(ERC20, ERC20Votes) {
+        super._afterTokenTransfer(from, to, amount);
+    }
+
+    // Burn tokens
+    function burn(uint256 amount) public override {
+        super.burn(amount);
+        emit Burned(msg.sender, amount);
+    }
+
+    // Burn tokens from a specific address
+    function burnFrom(address account, uint256 amount) public override {
+        super.burnFrom(account, amount);
+        emit Burned(account, amount);
+    }
+}