pragma solidity ^0.5.0;

import "openzeppelin-eth/contracts/ownership/Ownable.sol";

/**
* @title ERC20Storage
*/
contract ERC20Storage is Ownable {
    string private _name;
    string private _symbol;

    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    /*****************************/
    /*          Getters          */
    /*****************************/

    function getName() public view returns (string memory) {
        return _name;
    }
    function getSymbol() public view returns (string memory) {
        return _symbol;
    }
    function getTotalSupply() public view returns (uint256) {
        return _totalSupply;
    }
    function getBalance(address account) public view returns (uint256) {
        return _balances[account];
    }
    function getAllowances(address owner, address spender)
        public
        view
        returns (uint256)
    {
        return _allowances[owner][spender];
    }

    /*****************************/
    /*          Setters          */
    /*****************************/

    function setName(string memory name) public onlyOwner returns (bool) {
        _name = name;
        return true;

    }
    function setSymbol(string memory symbol) public onlyOwner returns (bool) {
        _symbol = symbol;
        return true;

    }
    function setTotalSupply(uint256 totalSupply)
        public
        onlyOwner
        returns (bool)
    {
        _totalSupply = totalSupply;
        return true;

    }
    function setBalance(address account, uint256 value)
        public
        onlyOwner
        returns (bool)
    {
        _balances[account] = value;
        return true;

    }
    function setAllowances(address owner, address spender, uint256 value)
        public
        onlyOwner
        returns (bool)
    {
        _allowances[owner][spender] = value;
        return true;
    }
}