pragma solidity ^0.4.18;
pragma experimental ABIEncoderV2;

contract RealEstateMarket {
    struct RealEstate {
        uint id;
        string image;
        string description;
        uint256 price;
        address owner;
    }
    RealEstate[] realEstates;
    RealEstate[] realEstatesForSold;

    mapping (address => uint) public balances;

    function addRealEstate(uint id, address _owner, string image, string description, uint price) {
        RealEstate memory realEstate = RealEstate(id, image, description, price, _owner);

        realEstatesForSold.push(realEstate);
        realEstates.push(realEstate);
    }

    function getRealEstatesLength() view public returns (uint) {
        return realEstates.length;

    }

    function getRealEstate(uint id) public returns (string, string, uint, address) {
        return (
            realEstates[id].image,
            realEstates[id].description,
            realEstates[id].price,
            realEstates[id].owner);
    }

    function getRealEstateForSold(uint id) public returns (string, string, uint, address) {
        return (
            realEstatesForSold[id].image,
            realEstatesForSold[id].description,
            realEstatesForSold[id].price,
            realEstates[id].owner);
    }

    function  buyRealEstate(uint id) payable {
        if(msg.sender.balance < realEstatesForSold[id].price) return;
        if(msg.value < realEstatesForSold[id].price) return;

        realEstatesForSold[id].owner.transfer(msg.value);
        // emit Sent(msg.sender, receiver, amount);

        for(uint i = 0; i < realEstates.length; i++) {
            if(realEstates[i].id == realEstatesForSold[id].id) {
                realEstates[i].owner = msg.sender;
                break;
            }
        }

        realEstatesForSold[id] = realEstatesForSold[realEstatesForSold.length - 1];
        realEstatesForSold.length--;
    }
}