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Created June 24, 2024 10:56
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./OkidoPropertyNFT.sol";
import "./FractionalOwnership.sol";
contract OkidoFinance {
OkidoPropertyNFT public propertyNFT;
IERC20 public okidoToken;
uint256 public propertyCounter;
address public owner;
modifier onlyOwner() {
require(msg.sender == owner, "Not owner");
struct Property {
uint256 tokenId;
FractionalOwnership fractionalContract;
uint256 pricePerShare;
uint256 totalShares;
uint256 sharesSold;
string name;
string uri;
mapping(uint256 => Property) public properties;
mapping(address => uint256[]) public userProperties;
event PropertyCreated(uint256 indexed tokenId, address indexed fractionalContract, uint256 pricePerShare);
event SharesPurchased(uint256 indexed tokenId, address indexed buyer, uint256 shares);
constructor(address _propertyNFT, address _okidoToken) {
propertyNFT = OkidoPropertyNFT(_propertyNFT);
okidoToken = IERC20(_okidoToken);
owner = msg.sender;
function createProperty(string memory name, string memory symbol, string memory uri, uint256 totalShares, uint256 pricePerShare) external onlyOwner {
uint256 tokenId =, uri);
// Deploy a new FractionalOwnership contract
FractionalOwnership fractionalContract = new FractionalOwnership(name, symbol, totalShares);
properties[tokenId] = Property({
tokenId: tokenId,
fractionalContract: fractionalContract,
pricePerShare: pricePerShare,
totalShares: totalShares,
sharesSold: 0,
name: name,
uri: uri
emit PropertyCreated(tokenId, address(fractionalContract), pricePerShare);
function buyShares(uint256 tokenId, uint256 shares) external {
Property storage property = properties[tokenId];
require(property.tokenId != 0, "Property does not exist");
require(property.sharesSold + shares <= property.totalShares, "Not enough shares available");
uint256 cost = shares * property.pricePerShare;
require(okidoToken.transferFrom(msg.sender, address(this), cost), "Payment failed");
property.fractionalContract.transferShares(msg.sender, shares);
property.sharesSold += shares;
emit SharesPurchased(tokenId, msg.sender, shares);
function listProperties() external view returns (Property[] memory) {
Property[] memory allProperties = new Property[](propertyCounter);
for (uint256 i = 1; i <= propertyCounter; i++) {
Property storage property = properties[i];
allProperties[i - 1] = Property({
tokenId: property.tokenId,
fractionalContract: property.fractionalContract,
pricePerShare: property.pricePerShare,
totalShares: property.totalShares,
sharesSold: property.sharesSold,
uri: property.uri
return allProperties;
function getUserProperties(address user) external view returns (uint256[] memory) {
return userProperties[user];
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