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May 16, 2023 07:18
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property contract
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| //Contract based on [https://docs.openzeppelin.com/contracts/3.x/erc721](https://docs.openzeppelin.com/contracts/3.x/erc721) | |
| // SPDX-License-Identifier: MIT | |
| pragma solidity ^0.8.0; | |
| import "./MyNFT.sol"; | |
| contract newuser { | |
| uint256 private tokenId=0; | |
| address private contract_owner; | |
| uint256 private contract_balance; | |
| // request status | |
| enum reqStatus {Default,approved} | |
| struct property | |
| { | |
| uint id; | |
| string prop_area; | |
| uint prop_house_no; | |
| string prop_landamark; | |
| string prop_city; | |
| string prop_state; | |
| uint prop_price; | |
| string prop_document; | |
| string prop_surveyno; | |
| string adharNo; | |
| reqStatus requestStatus; | |
| } | |
| event mint_property(uint id, | |
| string prop_area, | |
| uint prop_house_no, | |
| string prop_landamark, | |
| string prop_city, | |
| string prop_state, | |
| uint prop_price, | |
| string prop_document, | |
| string prop_surveyno, | |
| string adharNo); | |
| event transferProperty(uint id, address from, address to); | |
| MyNFT public nft; | |
| // creating userdetails mapping | |
| mapping(address => MyNFT) private userDetials; | |
| // creating array of properties | |
| mapping(uint256 => property) private properties; | |
| // checks whether perticular user has account or not | |
| mapping(address => uint) private isUserExist; | |
| //mapping of owners to the properties | |
| mapping(uint256 => address) private owners; | |
| // approving properties to perticular address | |
| mapping(uint256 => address) private property_approved; | |
| constructor() { | |
| contract_owner=msg.sender; | |
| nft = new MyNFT("REALDAPP2.0","RD2.0"); | |
| } | |
| function connectMetamask(address from) public view returns(bool){ | |
| if(isUserExist[from]==1){ | |
| return true; | |
| }else { | |
| return false; | |
| } | |
| } | |
| function createUser() public returns(bool){ | |
| if(isUserExist[msg.sender]==0){ | |
| isUserExist[msg.sender]=1; | |
| return true; | |
| }else { | |
| return false; | |
| } | |
| } | |
| function getNftContract() public view returns(MyNFT) { | |
| return nft; | |
| } | |
| function createProperty(uint _house_no, string memory _area, string memory _landmark, string memory _city, string memory _state, uint _price, string memory _document,string memory _adharNo,string memory _prop_surveyno) public returns(uint){ | |
| require(isUserExist[msg.sender]==1); | |
| tokenId++; | |
| nft.mintNFT(msg.sender, tokenId); | |
| properties[tokenId]=property(tokenId, _area, _house_no, _landmark, _city ,_state , _price, _document, _prop_surveyno, _adharNo, reqStatus.Default); | |
| owners[tokenId]=msg.sender; | |
| emit mint_property(tokenId, _area, _house_no, _landmark, _city ,_state , _price, _document, _prop_surveyno, _adharNo); | |
| return (tokenId-1); | |
| } | |
| function sellProperty(address from, address to, uint256 id) public returns(bool){ | |
| require(isUserExist[to]==1); | |
| require(isUserExist[from]==1); | |
| require(owners[id]==msg.sender); | |
| properties[id].requestStatus=reqStatus.approved; | |
| property_approved[id]=to; | |
| return true; | |
| } | |
| function rejectApprovedProperty(uint id) public returns(bool){ | |
| require(owners[id]==msg.sender); | |
| properties[id].requestStatus=reqStatus.Default; | |
| property_approved[id]=address(0); | |
| return true; | |
| } | |
| function buyProperty(address payable receiver,uint256 id) payable public returns(bool){ | |
| require(isUserExist[receiver]==1); | |
| require(isUserExist[msg.sender]==1); | |
| require(property_approved[id]==msg.sender); | |
| require(properties[id].requestStatus==reqStatus.approved); | |
| nft.transfer(receiver, msg.sender, id); | |
| owners[id]=msg.sender; | |
| emit transferProperty(id, receiver, msg.sender); | |
| contract_balance+=msg.value; | |
| receiver.transfer((msg.value)*95/100); | |
| properties[id].requestStatus=reqStatus.Default; | |
| property_approved[id]=address(0); | |
| return true; | |
| } | |
| function getUserProperties(address from) public view returns(property[] memory){ | |
| require(isUserExist[from]==1); | |
| property[] memory props = new property[](tokenId); | |
| uint256 Id=0; | |
| uint256 c=0; | |
| for(Id=1; Id<=tokenId; Id++){ | |
| if(owners[Id]==from){ | |
| props[c]=properties[Id]; | |
| c++; | |
| } | |
| } | |
| return props; | |
| } | |
| function getAllProperties() public view returns(property[] memory) { | |
| property[] memory props = new property[](tokenId+1); | |
| uint256 c=0; | |
| for(uint Id=1; Id<=tokenId; Id++) | |
| { | |
| props[c]=properties[Id]; | |
| c++; | |
| } | |
| return props; | |
| } | |
| function updateProperty(uint id, uint _price) public returns(bool){ | |
| require(isUserExist[msg.sender]==1); | |
| require(owners[id]==msg.sender); | |
| properties[id].prop_price = _price; | |
| return true; | |
| } | |
| function getBalance(address _user) public view returns(uint) { | |
| if(isUserExist[_user]==1) { | |
| return nft.balanceOf(_user); | |
| }else { | |
| return 0; | |
| } | |
| } | |
| function getBalanceOfContract() public view returns(uint) { | |
| return contract_balance; | |
| } | |
| function transferBalance(address payable to) public returns(bool){ | |
| require(contract_owner==msg.sender); | |
| to.transfer((contract_balance)/100); | |
| return true; | |
| } | |
| } |
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