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@loong
Created July 18, 2017 22:19
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pragma solidity ^0.4.0;
contract Rental {
uint deposit;
uint rent;
uint balance;
address tenant;
address landlord;
event DepositPayed(address payer, address tenant);
event DepositWithdrawn();
event RentWithdrawn(uint amount);
enum State {Vacant, Occupied}
State state;
// Constructor
function Rental(uint _deposit, uint _rent) {
landlord = msg.sender;
deposit = _deposit;
rent = _rent;
state = State.Vacant;
}
function moveIn(address _tenant) payable {
require(state == State.Vacant);
// need to pay the deposit in full or the money will be sent back
require(msg.value >= deposit);
tenant = _tenant;
DepositPayed(msg.sender, tenant);
state = State.Occupied;
}
function moveOut() {
require(state == State.Occupied);
require(msg.sender == tenant);
tenant.transfer(deposit); // error check needed?
deposit = 0;
tenant = 0; // not sure if this is good
DepositWithdrawn();
state = State.Vacant;
}
function payRent() payable {
require(state == State.Occupied);
balance += msg.value;
}
function withdrawRent() {
require(msg.sender == landlord);
require(balance > 0);
RentWithdrawn(balance);
landlord.transfer(deposit); // fails here
balance = 0;
}
function getDeposit() returns (uint) {
return deposit;
}
function getBalance() returns (uint) {
return balance;
}
}
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