Create PiStableCoin.sol

contracts/PiStableCoin.sol

@@ -0,0 +1,71 @@
+pragma solidity ^0.8.17;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol";
+
+contract PiCoin {
+    // Mapping of balances
+    mapping (address => uint256) public balances;
+
+    // Total supply of Pi Coin
+    uint256 public totalSupply;
+
+    // Decimal places for Pi Coin
+    uint256 public constant decimals = 18;
+
+    // Initial supply of Pi Coin
+    uint256 public constant INITIAL_SUPPLY = 314159000000000000000; // $314.159
+
+    // Event emitted when tokens are transferred
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    // Event emitted when tokens are minted
+    event Mint(address indexed to, uint256 value);
+
+    // Event emitted when tokens are burned
+    event Burn(address indexed from, uint256 value);
+
+    /**
+     * @dev Initializes the contract by setting the total supply and minting the initial supply to the owner.
+     */
+    constructor() public {
+        totalSupply = INITIAL_SUPPLY;
+        balances[msg.sender] = INITIAL_SUPPLY;
+        emit Mint(msg.sender, INITIAL_SUPPLY);
+    }
+
+    /**
+     * @dev Transfers tokens from one address to another.
+     * @param _from The address to transfer from.
+     * @param _to The address to transfer to.
+     * @param _value The amount of tokens to transfer.
+     */
+    function transfer(address _from, address _to, uint256 _value) public {
+        require(_value <= balances[_from], "Insufficient balance");
+        balances[_from] -= _value;
+        balances[_to] += _value;
+        emit Transfer(_from, _to, _value);
+    }
+
+    /**
+     * @dev Mints new tokens and adds them to the total supply.
+     * @param _to The address to mint tokens to.
+     * @param _value The amount of tokens to mint.
+     */
+    function mint(address _to, uint256 _value) public {
+        totalSupply += _value;
+        balances[_to] += _value;
+        emit Mint(_to, _value);
+    }
+
+    /**
+     * @dev Burns tokens from the total supply.
+     * @param _from The address to burn tokens from.
+     * @param _value The amount of tokens to burn.
+     */
+    function burn(address _from, uint256 _value) public {
+        require(_value <= balances[_from], "Insufficient balance");
+        totalSupply -= _value;
+        balances[_from] -= _value;
+        emit Burn(_from, _value);
+    }
+}