Added Smart Contract Base Code

contract/RealEstate.sol

@@ -0,0 +1,125 @@
+pragma solidity ^0.4.4;
+
+contract RealEstate {
+
+  address owner;
+  uint deposit;
+
+  struct House {
+    int id;
+    address owner;
+    string ownerName;
+    string ownerEmail;
+    uint basePrice;
+    string imageUrl;
+    string location;
+    Proposal proposal; //open/progress/done
+    uint deposit;
+    string status;
+    uint bedRooms;
+    uint squareFeet;
+  }
+
+  struct Proposal {
+    address buyer;
+    string buyerName;
+    uint price;
+    uint lifetime;
+  }
+
+  function RealEstate(uint _deposit) public {
+    owner = msg.sender;
+    deposit = _deposit;
+  }
+
+  function getDeposit() constant returns(uint _deposit) {
+    _deposit = deposit;
+  }
+
+  mapping(int => House) houses;
+
+
+  modifier onlyBuyer(int id) {
+          require(msg.sender == houses[id].proposal.buyer);
+          _;
+  }
+
+
+  modifier onlySeller(int id) {
+          require(msg.sender == houses[id].owner);
+          _;
+  }
+
+  //Give the details of the house
+  function getHouseDetails(int houseId) constant public returns (string _owner, uint _value, string _location, string _email, string _status, string _imageUrl, uint _bedRooms, uint _squareFeet) {
+    _owner = houses[houseId].ownerName;
+    _value = houses[houseId].basePrice;
+    _location = houses[houseId].location;
+    _email = houses[houseId].ownerEmail;
+    _status = houses[houseId].status;
+    _imageUrl = houses[houseId].imageUrl;
+    _imageUrl = houses[houseId].imageUrl;
+    _bedRooms = houses[houseId].bedRooms;
+    _squareFeet = houses[houseId].squareFeet;
+  }
+
+
+
+  //When a seller is ready to sell his house he gives out his house information
+  function setHouseDetails(int _houseId, string _email, uint _basePrice, string _location, string _ownerName, string _imageUrl, uint _bedRooms, uint _squareFeet)  public payable{
+    if(msg.value < deposit)
+      return;
+
+    houses[_houseId].id = _houseId;
+    houses[_houseId].owner = msg.sender;
+    houses[_houseId].ownerEmail = _email;
+    houses[_houseId].basePrice = _basePrice;
+    houses[_houseId].location = _location;
+    houses[_houseId].deposit = msg.value;
+    houses[_houseId].ownerName = _ownerName;
+    houses[_houseId].imageUrl = _imageUrl;
+    houses[_houseId].status = "open";
+    houses[_houseId].imageUrl = _imageUrl;
+    houses[_houseId].bedRooms = _bedRooms;
+    houses[_houseId].squareFeet = _squareFeet;
+  }
+
+  //When buyer is interested in an house he places a proposal for the house
+  //Money is taken from the buyer and deposited in the smart contract
+  function addProposal(int _houseId, string _buyerName, uint _price, uint _lifetime) public payable {
+    if(msg.value < houses[_houseId].basePrice)
+      return;
+
+    if(keccak256(houses[_houseId].status) == keccak256("open")){
+      houses[_houseId].proposal.buyer = msg.sender;
+      houses[_houseId].proposal.price = _price;
+      houses[_houseId].proposal.lifetime = _lifetime;
+      houses[_houseId].proposal.buyerName = _buyerName;
+      houses[_houseId].status ="progess";
+    }
+  }
+
+  function getProposal(int _houseId) constant public returns(string _buyerName,uint _price, uint _lifetime){
+    _price = houses[_houseId].proposal.price;
+    _lifetime = houses[_houseId].proposal.lifetime;
+    _buyerName = houses[_houseId].proposal.buyerName;
+  }
+
+  function extendLifeTime(int _houseId,uint time) onlyBuyer(_houseId)  public{
+    //Can take some commission
+    houses[_houseId].proposal.lifetime = houses[_houseId].proposal.lifetime + time;
+  }
+
+  //Seller confirming the buyer's proposal
+  //Money is transfered from the smart contract to the seller
+  function sellHouse(int _houseId) onlySeller(_houseId) payable  public{
+    houses[_houseId].owner = houses[_houseId].proposal.buyer;
+    houses[_houseId].ownerEmail = "";
+    houses[_houseId].deposit = msg.value;
+    houses[_houseId].ownerName = houses[_houseId].proposal.buyerName ;
+    houses[_houseId].status = "sold";
+    Proposal proposal;
+    houses[_houseId].proposal = proposal;
+    houses[_houseId].owner.transfer(houses[_houseId].basePrice);
+  }
+}