Staking dapp

.gitignore

@@ -0,0 +1 @@
+*.env

backend/contracts/BUIDLToken.sol

@@ -0,0 +1,15 @@
+//SPDX-License-Identifier: UNLICENSED
+
+pragma solidity 0.8.18;
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+
+contract BUIDLToken is ERC20{
+    constructor(string memory name, string memory symbol) ERC20(name, symbol) {
+
+    }
+
+    function mintTokens(address to, uint256 amount) external {
+        _mint(to, amount);
+    }
+
+}

backend/contracts/BuidlNFT.sol

@@ -3,9 +3,13 @@ pragma solidity 0.8.18;
 
 import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
 import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
+import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
 import "@openzeppelin/contracts/utils/Counters.sol";
 
-contract BuidlNFT is ERC721, ERC721URIStorage {
+/// @title BuidlNFT Contract
+/// @author Megabyte
+/// @notice This contract is used to mint NFTs and transfer them.
+contract BuidlNFT is ERC721, ERC721URIStorage, ERC721Enumerable {
     using Counters for Counters.Counter;
 
     /// @dev Counter to keep track of the token Id
@@ -36,7 +40,7 @@ contract BuidlNFT is ERC721, ERC721URIStorage {
     /// Function to mint the NFT
     /// @param to Address of the receiver
     /// @param uri Token URI of the NFT
-    function safeMint(address to, string memory uri) external onlyOwner {
+    function safeMint(address to, string memory uri) external {
         uint256 tokenId = _tokenIdCounter.current();
         _tokenIdCounter.increment();
         _safeMint(to, tokenId);
@@ -52,6 +56,15 @@ contract BuidlNFT is ERC721, ERC721URIStorage {
 
     // The following functions are overrides required by Solidity.
 
+    function _beforeTokenTransfer(
+        address from,
+        address to,
+        uint256 tokenId,
+        uint256 batchSize
+    ) internal override(ERC721, ERC721Enumerable) {
+        super._beforeTokenTransfer(from, to, tokenId, batchSize);
+    }
+
     function _burn(
         uint256 tokenId
     ) internal override(ERC721, ERC721URIStorage) {
@@ -63,4 +76,10 @@ contract BuidlNFT is ERC721, ERC721URIStorage {
     ) public view override(ERC721, ERC721URIStorage) returns (string memory) {
         return super.tokenURI(tokenId);
     }
-}
+
+    function supportsInterface(
+        bytes4 interfaceId
+    ) public view override(ERC721, ERC721Enumerable) returns (bool) {
+        return super.supportsInterface(interfaceId);
+    }
+}

backend/contracts/Staking.sol

@@ -0,0 +1,62 @@
+pragma solidity 0.8.18;
+
+
+import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
+import "@openzeppelin/contracts/token/ERC721/utils/ERC721Holder.sol";
+
+import "./BUIDLToken.sol";
+
+contract Staking is ERC721Holder {
+    /// @notice NFT contract
+    IERC721 public buidlNFT;
+    //ye iss contract ke liye variable hai 
+
+    /// @notice Token contract
+    BUIDLToken public buidlToken;
+    //ye iss token ke liye variable hai 
+
+
+    /// @dev owner of the contract
+    address owner;
+
+    /// @notice Emission rate per second
+    uint256 public EMISSION_RATE = ((10 ** 18) / (uint256(1 days)));
+
+    /// @notice Staking start time
+    mapping(address => uint256) public tokenStakedAt;
+
+    /// @notice Token ID of the staked NFT
+    mapping(address => uint256) public stakeTokenId;
+
+    /// @notice Constructor
+    /// @param nft  NFT contract address
+    /// @param token Token contract address
+    constructor(address nft, address token) {
+        buidlNFT = IERC721(nft);
+        buidlToken = BUIDLToken(token);
+    }
+    function stakeNFT(uint256 tokenId) external {
+        require(buidlNFT.ownerOf(tokenId) == msg.sender, "ERR:NO");
+        buidlNFT.safeTransferFrom(msg.sender, address(this), tokenId);
+        tokenStakedAt[msg.sender] = block.timestamp;
+        stakeTokenId[msg.sender] = tokenId;
+    }
+    function calculateReward(address staker) public view returns (uint256) {
+        require(tokenStakedAt[staker] != 0, "ERR:NS");
+        //NS : Not Staked 
+        uint256 time = block.timestamp - tokenStakedAt[staker];
+        return (time * EMISSION_RATE);
+    }
+    function unStakeNFT(uint256 tokenId) external {
+        require(stakeTokenId[msg.sender] == tokenId, "ERR:NY");
+        uint256 rewardAmount = calculateReward(msg.sender);
+
+        buidlNFT.safeTransferFrom(address(this), msg.sender, tokenId);
+
+        buidlToken.mintTokens(msg.sender, rewardAmount);
+
+        delete stakeTokenId[msg.sender];
+        delete tokenStakedAt[msg.sender];
+    }
+}
+

backend/hardhat.config.js

@@ -12,6 +12,14 @@ module.exports = {
       url: ALCHEMY_HTTP_URL,
       accounts: [PRIVATE_KEY],
     },
+    zkEVM : {
+      url: "https://rpc.public.zkevm-test.net",
+      accounts: [PRIVATE_KEY],
+    },
+    hermes : {
+      url: "https://rpc-test.h4s.dojima.network/",
+      accounts: [PRIVATE_KEY],
+    }
   },
   etherscan: {
     apiKey: {

backend/scripts/deploy.js

@@ -10,18 +10,32 @@ async function main() {
     const nft = await NFT.deploy("BuidlNFT", "BN");
     await nft.deployed();
     console.log("Contract address:", nft.address);
-  } catch (error) {
-    console.error(error);
-  }
 
+    const TOKEN = await ethers.getContractFactory("BUIDLToken");
+    const token = await TOKEN.deploy("BUIDLToken", "BT");
+    await token.deployed();
+    console.log("Contract address:", token.address);
+
+    const STAKING = await ethers.getContractFactory("Staking");;
+    const staking = await STAKING.deploy(nft.address, token.address);
+    await staking.deployed();
+    console.log("Contract address:", staking.address);
+
   console.log("Sleeping.....");
-  await sleep(40000);
+  // await sleep(60000);
 
-  try {
-    await hre.run("verify:verify", {
-      address: nft.address,
-      constructorArguments: ["BuidlNFT", "BN"],
-    });
+  //   await hre.run("verify:verify", {
+  //     address: nft.address,
+  //     constructorArguments: ["BuidlNFT", "BN"],
+  //   });
+  //   await hre.run("verify:verify", {
+  //     address: token.address,
+  //     constructorArguments: ["BUIDLToken", "BT"],
+  //   });
+  //   await hre.run("verify:verify", {
+  //     address: staking.address,
+  //     constructorArguments: [nft.address, token.address],
+  //   });
   } catch (error) {
     console.error(error);
   }

backend/test/deploy.js

@@ -0,0 +1,35 @@
+const hre = require("hardhat");
+const { expect } = require("chai");
+
+describe("Staking Contract Deployment", function () {
+  it("Should deploy the Staking Contract", async function () {
+    const [owner, user1] = await hre.ethers.getSigners();
+
+    const NFT = await ethers.getContractFactory("BuidlNFT");
+    const nft = await NFT.deploy("BuidlNFT", "BN");
+    await nft.deployed().then((val) => {
+      console.log("NFT Contract Deployed");
+      console.log("Contract Address: " + nft.address);
+    });
+
+    const TOKEN = await ethers.getContractFactory("BUIDLToken");
+    const token = await TOKEN.deploy("BuidlToken", "BT");
+    await token.deployed().then((val) => {
+      console.log("Token Contract Deployed");
+      console.log("Contract Address: " + token.address);
+    });
+
+    const STAKING = await ethers.getContractFactory("Staking");
+    const staking = await STAKING.deploy(nft.address, token.address);
+    await staking.deployed().then((val) => {
+      console.log("Staking Contract Deployed");
+      console.log("Contract Address: " + staking.address);
+    });
+
+    expect(await staking.buidlToken()).to.be.equal(token.address);
+    expect(await staking.buidlNFT()).to.be.equal(nft.address);
+  });
+});
+
+
+

frontend/.env

@@ -0,0 +1 @@
+NEXT_PUBLIC_WEB3_PROJECT_ID = "1740de631ccbc46ed8fd2401056d6b85"

frontend/ABIs/BuidlNFT.json

@@ -1,4 +1,5 @@
 {
-  "address": "",
-  "abi": []
+  "address": "0x3C591565694fE23bD0FeB2cCB38A35a1Db06517A",
+  "abi" : [{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getTokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"string","name":"uri","type":"string"}],"name":"safeMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]
 }
+