// SPDX-License-Identifier: MIT
pragma solidity^0.8.17;

//ERC Token Standard #20 Interface 
interface ERC20Interface{
    function totalSupply() external view returns(uint);
    function balanceOf(address account) external view returns (uint balance);
    function allowance(address owner, address spender) external view returns (uint remaining);
    function transfer(address recipient, uint amount)external returns (bool success);
    function approve(address spender, uint amount) external returns (bool success);
    function transferFrom(address sender, address recipient, uint amount) external returns (bool success);

    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}

//Actual token contract
contract SplendaDaddy is ERC20Interface {
    string public symbol; 
    string public name; 
    uint8 public decimals; 
    uint public _totalSupply;

    mapping(address => uint) balances; 
    mapping(address => mapping(address => uint)) allowed; 

    constructor() {
        symbol = "SDAD";
        name = "Splenda Daddy";
        decimals = 18;
        _totalSupply = 10_000_000_000_000_000_000_000_000_000; // Ten Billion coins, with 18 zeros for decimal points
        balances[0x05FE41F127aE0126C3fc4F9134A3d35465CE8B25] = _totalSupply;
        emit Transfer(address(0), 0x05FE41F127aE0126C3fc4F9134A3d35465CE8B25, _totalSupply);
    }

    function totalSupply () public view returns (uint) {
        return _totalSupply;
    }

    function balanceOf(address account) public view returns (uint balance){
        return balances[account];
    }

    function transfer(address recipient, uint amount) public returns (bool success) {
        balances[msg.sender] = balances[msg.sender] - amount;
        balances[recipient] = balances[recipient] + amount;
        emit Transfer(msg.sender, recipient, amount);
        return true;
    }

    function approve(address spender, uint amount) public returns (bool success) {
        allowed[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint amount) public returns (bool success) {
        balances[sender] = balances[sender] - amount;
        allowed[sender][msg.sender] = allowed [sender][msg.sender] - amount; 
        balances[recipient] = balances[recipient] + amount;
        emit Transfer(sender, recipient, amount);
        return true;
    }
    
    function allowance(address owner, address spender) public view returns (uint remaining) {
        return allowed[owner][spender];
    }
}