// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: @openzeppelin/contracts/security/ReentrancyGuard.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: contracts/iAIPool3.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import './IPool.sol';

contract iAIPool3 is IPool {
  mapping(address => uint256) public dynamicAprs;

  constructor(address iAITokenAddress, address nftTokenAddress) IPool(iAITokenAddress, nftTokenAddress) {
    poolType = 'Pool 3';
    apr = 550;
    nftThreshold = 3;
    tokenThreshold = 100000 ether;
    minPoolPeriod = 182 days;
  }

  function pool(uint256 _amount) external payable {
    require(poolActive, 'Pool is not currently active');
    require(poolData[msg.sender].length == 0, 'Only 1 position allowed for pool 3');
    require(iAI.balanceOf(msg.sender) >= _amount, 'Insufficient $iAI balance');
    require(_amount >= tokenThreshold, '$iAI threshold not met');
    require(nft9022.balanceOf(msg.sender) >= nftThreshold, '9022 threshold not met');

    // Calculate the apr determined by how many 9022 you have
    uint256 nftCount = nft9022.balanceOf(msg.sender);
    uint256 dynamicApr = apr + (50 * (nftCount - nftThreshold));
    if (dynamicApr > 900) {
      dynamicApr = 900;
    }
    dynamicAprs[msg.sender] = dynamicApr;
    iAI.transferFrom(msg.sender, address(this), _amount);
    poolBalance[msg.sender] += _amount;
    poolData[msg.sender].push(Pool(_amount, dynamicApr, block.timestamp, poolType));
    emit Pooled(msg.sender, _amount);
  }

  function unPool(uint256 _index) external nonReentrant {
    require(poolActive, 'Pool is not currently active');
    require(poolData[msg.sender].length > 0, 'No stakes found for the address');
    require(poolData[msg.sender].length >= _index + 1, 'Stake does not exist');
    // uint256 totalStaked = poolingBalance[msg.sender];
    uint256 lastStakeIndex = _index;
    Pool memory lastStake = poolData[msg.sender][lastStakeIndex];
    uint256 timeStaked = block.timestamp - lastStake.timestamp;
    require(timeStaked >= minPoolPeriod, 'Minimum pooling period not reached');
    uint256 latestStake = lastStake.amount;
    uint256 reward = (latestStake * dynamicAprs[msg.sender]) / 10000;
    uint256 payout = latestStake + reward;
    // Remove the stake at the given index
    for (uint256 i = _index; i < poolData[msg.sender].length - 1; i++) {
      poolData[msg.sender][i] = poolData[msg.sender][i + 1];
    }
    poolData[msg.sender].pop();
    poolBalance[msg.sender] -= latestStake;
    lastClaimTime[msg.sender] = block.timestamp;
    iAI.transfer(msg.sender, payout);
    emit Unpooled(msg.sender, payout, timeStaked);
  }

  function withdrawPosition(uint256 _index) external nonReentrant {
    require(poolActive, 'Pool is not currently active');
    require(poolData[msg.sender].length > 0, 'No stakes found for the address');
    require(poolData[msg.sender].length >= _index + 1, 'Stake does not exist');
    uint256 lastStakeIndex = _index;
    Pool memory lastStake = poolData[msg.sender][lastStakeIndex];
    uint256 timeStaked = block.timestamp - lastStake.timestamp;
    uint256 latestStake = lastStake.amount;
    require(timeStaked <= minPoolPeriod, 'Withdraw with penalty time exceed you can now unstake token ');
    uint256 penalty = (latestStake * withdrawPenalty) / 100;
    // Remove the stake at the given index
    for (uint256 i = _index; i < poolData[msg.sender].length - 1; i++) {
      poolData[msg.sender][i] = poolData[msg.sender][i + 1];
    }
    poolData[msg.sender].pop();
    poolBalance[msg.sender] -= latestStake;
    lastClaimTime[msg.sender] = block.timestamp;
    uint256 payout = latestStake - penalty;
    iAI.transfer(msg.sender, payout);
    emit Penalty(msg.sender, payout);
  }

  function claimReward() external nonReentrant {
    require(poolActive, 'Pool is not currently active');
    require(poolData[msg.sender].length > 0, 'No stakes found for the address');
    uint256 totalStaked = poolBalance[msg.sender];
    uint256 lastClaim = lastClaimTime[msg.sender];
    uint256 timeElapsed = block.timestamp - lastClaim;
    require(timeElapsed > 0, 'No rewards to claim');
    // Calculate the reward
    uint256 reward = (totalStaked * (dynamicAprs[msg.sender] / 365) * (timeElapsed / 1 days)) / 100;
    require(reward > 0, 'Not Eligible for reward');
    lastClaimTime[msg.sender] = block.timestamp;
    iAI.transfer(msg.sender, reward);
    emit RewardClaimed(msg.sender, reward);
  }
}

// File: contracts/IPool.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import '@openzeppelin/contracts/security/ReentrancyGuard.sol';
import '@openzeppelin/contracts/access/Ownable.sol';

interface IiAI {
  function transfer(address to, uint256 amount) external returns (bool);

  function transferFrom(address from, address to, uint256 amount) external returns (bool);

  function balanceOf(address account) external view returns (uint256);
}

interface I9022 {
  function balanceOf(address account) external view returns (uint256);

  function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
}

contract IPool is ReentrancyGuard, Ownable {
  IiAI public iAI;
  I9022 public nft9022;

  struct Pool {
    uint256 amount;
    uint256 apr;
    uint256 timestamp;
    string poolType;
  }

  string public poolType;
  uint256 public apr;
  uint256 public nftThreshold;
  uint256 public tokenThreshold;
  uint256 public minPoolPeriod;
  uint256 public withdrawPenalty = 25;
  bool public poolActive = true;

  mapping(address => Pool[]) internal poolData;
  mapping(address => uint256) internal poolBalance;
  mapping(address => uint256) internal lastClaimTime;

  event Pooled(address indexed from, uint256 amount);
  event Unpooled(address indexed to, uint256 amount, uint256 poolPeriod);
  event Penalty(address indexed to, uint256 amount);
  event RewardClaimed(address indexed to, uint256 amount);
  event Received(address, uint);

  constructor(address iAITokenAddress, address nftTokenAddress) Ownable() {
    iAI = IiAI(iAITokenAddress);
    nft9022 = I9022(nftTokenAddress);
  }

  receive() external payable {
    emit Received(msg.sender, msg.value);
  }

  function setPoolState() external onlyOwner {
    poolActive = !poolActive;
  }

  function setIAIToken(address _tokenAddress) external onlyOwner {
    iAI = IiAI(_tokenAddress);
  }

  function setNftToken(address _tokenAddress) external onlyOwner {
    nft9022 = I9022(_tokenAddress);
  }

  function setTokenThreshold(uint256 _amount) external onlyOwner {
    require(_amount > 0, 'Amount can not be 0');
    tokenThreshold = _amount;
  }

  function setNftThreshold(uint256 _amount) external onlyOwner {
    require(_amount > 0, 'Amount can not be 0');
    nftThreshold = _amount;
  }

  function setARP(uint256 _arp) external onlyOwner {
    require(_arp > 0, 'Amount can not be zero');
    apr = _arp;
  }

  function setMinPoolingPeriod(uint256 _minstakingPeriod) external onlyOwner {
    require(_minstakingPeriod > 0, "Amount cann't be zero");
    minPoolPeriod = _minstakingPeriod;
  }

  function setWithdrawPenalty(uint256 _withdrawPenalty) external onlyOwner {
    require(_withdrawPenalty > 0, "Amount cann't be zero");
    withdrawPenalty = _withdrawPenalty;
  }

  function poolPostions(address _staker) public view returns (uint256) {
    return poolBalance[_staker];
  }

  function poolPostionDetails(address _staker, uint256 _index) public view returns (Pool memory) {
    return poolData[_staker][_index];
  }

  function lastclaimtime(address _staker) public view returns (uint256) {
    return lastClaimTime[_staker];
  }

  function allPooled(address _staker) public view returns (Pool[] memory) {
    return poolData[_staker];
  }

  function widthdrawIAI(address _address, uint256 _amount) external onlyOwner {
    iAI.transfer(_address, _amount);
  }

  function withdraw(address _address) external onlyOwner {
    uint256 balance = address(this).balance;
    require(balance > 0, 'Amount is too high');
    payable(_address).transfer(balance);
  }

  function getUserTokens(address _address) public view returns (uint256[] memory) {
    uint256 totalTokens = nft9022.balanceOf(_address);
    uint256[] memory tokenIds = new uint256[](totalTokens);

    for (uint256 i = 0; i < totalTokens; i++) {
      tokenIds[i] = nft9022.tokenOfOwnerByIndex(_address, i);
    }

    return tokenIds;
  }
}