-
Notifications
You must be signed in to change notification settings - Fork 0
/
CarToken.sol
47 lines (39 loc) · 1.54 KB
/
CarToken.sol
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
pragma solidity ^0.4.24;
import './Ownable.sol';
import './SafeMath.sol';
contract CarToken is Ownable{
using SafeMath for uint256;
uint public totalTokens;
mapping(address => uint) public balances;
uint public etherBalance;
uint PRICE = 1 * (1 ether);
event SendTokens(address indexed sender, address indexed receiver, uint amount);
constructor(uint _initialBalance) payable public {
totalTokens = _initialBalance;
owner = msg.sender;
etherBalance = msg.value;
balances[this] = _initialBalance;
if(msg.value > 0) {
uint initialtokenToTransfer = (1 / PRICE) * msg.value;
balances[msg.sender].add(initialtokenToTransfer);
balances[this].sub(initialtokenToTransfer);
}
}
function addEthersToCar() payable onlyOwner public {
uint tokenToTransfer = (1 / PRICE) * msg.value;
balances[this].sub(tokenToTransfer);
balances[msg.sender].add(tokenToTransfer);
etherBalance.add(msg.value);
emit SendTokens(msg.sender, this, msg.value);
}
function withdrawEthersFromCar(uint carTokens) payable onlyOwner public {
uint transferAmount = PRICE * carTokens;
require(etherBalance > transferAmount);
msg.sender.transfer(transferAmount);
etherBalance.sub(transferAmount);
emit SendTokens(msg.sender, this, transferAmount);
}
function tokenBalance() onlyOwner public view returns(uint) {
return balances[this];
}
}