TW89SCm6oXHUtqjL9XPKePbxTrjQjif71W

[arashebadi38]

// SPDX-License-Identifier: MIT
pragma solidity ^0.5.10;

interface ITRC20 {
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
}

contract TronStake {
ITRC20 public token;
uint256 public rewardPercent = 6150; // 61.5% (ضریب 100 * 61.5)
uint256 public stakingDuration = 30 days;

struct StakeInfo {
    uint256 amount;
    uint256 startTime;
    bool withdrawn;
}

mapping(address => StakeInfo) public stakes;

constructor(address tokenAddress) public {
    token = ITRC20(tokenAddress);
}

function stake(uint256 amount) public {
    require(amount > 0, "Amount must be > 0");
    require(stakes[msg.sender].amount == 0, "Already staking");

    require(token.transferFrom(msg.sender, address(this), amount), "Transfer failed");

    stakes[msg.sender] = StakeInfo(amount, now, false);
}

function withdraw() public {
    StakeInfo storage stakeData = stakes[msg.sender];
    require(stakeData.amount > 0, "No stake found");
    require(!stakeData.withdrawn, "Already withdrawn");
    require(now >= stakeData.startTime + stakingDuration, "Staking period not finished");

    uint256 reward = stakeData.amount * rewardPercent / 10000;
    stakeData.withdrawn = true;

    require(token.transfer(msg.sender, stakeData.amount + reward), "Transfer failed");
}

function emergencyWithdraw() public {
    StakeInfo storage stakeData = stakes[msg.sender];
    require(stakeData.amount > 0, "No stake found");
    require(!stakeData.withdrawn, "Already withdrawn");

    stakeData.withdrawn = true;

    require(token.transfer(msg.sender, stakeData.amount), "Transfer failed");
}

}