/**
 *Submitted for verification at Etherscan.io on 2020-06-01
*/

/**
 *Submitted for verification at Etherscan.io on 2019-12-31
*/

/**
 *Submitted for verification at Etherscan.io on 2018-08-01 - Adopted from 0x1fa301a740b039e08f88389ef561c4126f652ed0
*/

pragma solidity 0.5.12;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}

contract  ERC20 {
  function totalSupply()public view returns (uint total_Supply);
  function balanceOf(address who)public view returns (uint256);
  function allowance(address owner, address spender)public view returns (uint);
  function transferFrom(address from, address to, uint value)public returns (bool ok);
  function approve(address spender, uint value)public returns (bool ok);
  function transfer(address to, uint value)public returns (bool ok);
  event Transfer(address indexed from, address indexed to, uint value);
  event Approval(address indexed owner, address indexed spender, uint value);
}


contract Mandi is ERC20
{ using SafeMath for uint256;
    // Name of the token
    string private constant _name = "Mandi";

    // Symbol of token
    string private constant _symbol = "Mandi";
    uint8 private constant _decimals = 8;
    uint public Totalsupply = 10000000000 * 10 ** 8 ;
    address public owner;  // Owner of this contract
    uint256 no_of_tokens;
    address public admin_account;
    mapping(address => uint) balances;
    mapping(address => mapping(address => uint)) allowed;

    event ChangeOwnerShip(address indexed newOwner);
    event ChangeAdmin(address indexed administrative_Acccount);


    modifier onlyOwner() {
        require(msg.sender == owner, "Only Owner is allowed");
        _;
    }

     modifier onlyadminAccount {
        require(msg.sender == admin_account, "Only Admin is allowed");
        _;
    }


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

    }

       function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }



  // Adding new Admin , can be done only by Owner of the contract
     function set_centralAccount(address administrative_Acccount) external onlyOwner
     {
        require( administrative_Acccount != address(0), "Address can not be 0x0");
	    uint256 _previousAdminBalance = balances[admin_account];
	    balances[administrative_Acccount] = (balances[administrative_Acccount]).add(balances[admin_account]);
	    balances[admin_account] = 0;
	    admin_account = administrative_Acccount;
	    emit ChangeAdmin(administrative_Acccount);
	    emit Transfer(msg.sender, administrative_Acccount, _previousAdminBalance);
     }

    // what is the total supply of the ech tokens
     function totalSupply() public view returns (uint256 total_Supply) {
         total_Supply = Totalsupply;
     }

      // what is the total supply of the Mandi token
     function currentSupply() public view returns (uint256 current_Supply) {
         current_Supply = Totalsupply.sub(balances[owner]);
     }

    // What is the balance of a particular account?
     function balanceOf(address _owner)public view returns (uint256 balance) {
         return balances[_owner];
     }

    // Send _value amount of tokens from address _from to address _to
     // The transferFrom method is used for a withdraw workflow, allowing contracts to send
     // tokens on your behalf, for example to "deposit" to a contract address and/or to charge
     // fees in sub-currencies; the command should fail unless the _from account has
     // deliberately authorized the sender of the message via some mechanism; we propose
     // these standardized APIs for approval:
     function transferFrom( address _from, address _to, uint256 _amount )public returns (bool success) {
     require( _to != address(0), "Receiver can not be 0x0");
     require(balances[_from] >= _amount && allowed[_from][msg.sender] >= _amount && _amount >= 0);
     balances[_from] = (balances[_from]).sub(_amount);
     allowed[_from][msg.sender] = (allowed[_from][msg.sender]).sub(_amount);
     balances[_to] = (balances[_to]).add(_amount);
     emit Transfer(_from, _to, _amount);
     return true;
         }

   // Allow _spender to withdraw from your account, multiple times, up to the _value amount.
     // If this function is called again it overwrites the current allowance with _value.
     function approve(address _spender, uint256 _amount)public returns (bool success) {
         require( _spender != address(0), "Address can not be 0x0");
         allowed[msg.sender][_spender] = _amount;
         emit Approval(msg.sender, _spender, _amount);
         return true;
     }

     function allowance(address _owner, address _spender)public view returns (uint256 remaining) {
         require( _owner != address(0) && _spender !=address(0));
         return allowed[_owner][_spender];
   }

     // Transfer the balance from owner's account to another account
     function transfer(address _to, uint256 _amount)public returns (bool success) {
        require( _to != address(0), "Address can not be 0x0");
        require(balances[msg.sender] >= _amount && _amount >= 0);
        balances[msg.sender] = (balances[msg.sender]).sub(_amount);
        balances[_to] = (balances[_to]).add(_amount);
        emit Transfer(msg.sender, _to, _amount);
             return true;
         }

    //In case the ownership needs to be transferred
	function transferOwnership(address newOwner) external onlyOwner
	{
	    require( newOwner != address(0), "Address can not be 0x0");
	    uint256 _previousOwnerBalance = balances[owner];
	    balances[newOwner] = (balances[newOwner]).add(balances[owner]);
	    balances[owner] = 0;
	    owner = newOwner;
	    emit ChangeOwnerShip(newOwner);
	    emit Transfer(msg.sender, newOwner, _previousOwnerBalance);
	}
}

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