contract Mytoken is ERC20 {
  using SafeMath for uint256;

  mapping (address => uint256) private balances;
  mapping (address => mapping (address => uint256)) private allowed;
  
  
    string public constant name  = "MITOKEN";
    string public constant symbol = "MITO";
    uint8 public constant decimals = 18;
    uint256 _totalSupply = 10000000 * (10 ** 18);
  
  address owner = msg.sender;

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

function VetriToken(
            uint256 initialSupply,
            string tokenName,
            string tokenSymbol,
            address wallet
         ) public {
         owner = wallet;
         _totalSupply = initialSupply.mul( 10 ** uint256(decimals)); //Update total supply with the decimal amount
        
         balances[wallet] = _totalSupply;
         
         //Emitting transfer event since assigning all tokens to the creator also corresponds to the transfer of tokens to the creator
         emit Transfer(address(0), msg.sender, _totalSupply);
     }
     
     /**
     *@dev helper method to get token details, name, symbol and totalSupply in one go
     */
 function getTokenDetail() public view returns (string, string, uint256) {
	    return (name, symbol, _totalSupply);
    }
 
  function totalSupply() public view returns (uint256) {
    return _totalSupply;
  }

  function balanceOf(address player) public view returns (uint256) {
    return balances[player];
  }

  function allowance(address player, address spender) public view returns (uint256) {
    return allowed[player][spender];
  }


  function transfer(address to, uint256 value) public returns (bool) {
    require(value <= balances[msg.sender]);
    require(to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(value);
    balances[to] = balances[to].add(value);

    emit Transfer(msg.sender, to, value);
    return true;
  }

  function multiTransfer(address[] memory receivers, uint256[] memory amounts) public {
    for (uint256 i = 0; i < receivers.length; i++) {
      transfer(receivers[i], amounts[i]);
    }
  }

  function approve(address spender, uint256 value) public returns (bool) {
    require(spender != address(0));
    allowed[msg.sender][spender] = value;
    emit Approval(msg.sender, spender, value);
    return true;
  }

  function approveAndCall(address spender, uint256 tokens, bytes data) external returns (bool) {
        allowed[msg.sender][spender] = tokens;
        emit Approval(msg.sender, spender, tokens);
        ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
        return true;
    }

  function transferFrom(address from, address to, uint256 value) public returns (bool) {
    require(value <= balances[from]);
    require(value <= allowed[from][msg.sender]);
    require(to != address(0));
    
    balances[from] = balances[from].sub(value);
    balances[to] = balances[to].add(value);
    
    allowed[from][msg.sender] = allowed[from][msg.sender].sub(value);
    
    emit Transfer(from, to, value);
    return true;
  }

  function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
    require(spender != address(0));
    allowed[msg.sender][spender] = allowed[msg.sender][spender].add(addedValue);
    emit Approval(msg.sender, spender, allowed[msg.sender][spender]);
    return true;
  }

  function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
    require(spender != address(0));
    allowed[msg.sender][spender] = allowed[msg.sender][spender].sub(subtractedValue);
    emit Approval(msg.sender, spender, allowed[msg.sender][spender]);
    return true;
  }

  function burn(uint256 amount) external {
    require(amount != 0);
    require(amount <= balances[msg.sender]);
    _totalSupply = _totalSupply.sub(amount);
    balances[msg.sender] = balances[msg.sender].sub(amount);
    emit Transfer(msg.sender, address(0), amount);
  }

}
function getTokenDetail() public view returns (string, string, uint256) {
    return (name, symbol, _totalSupply);
   }

/**
 *@dev helper method to get token details, name, symbol and totalSupply in one go
 */