Contract Source Code:

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.5;

/*
 * @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 GSN 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 memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

/**
 *
 * @title IERC20
 */

pragma solidity ^0.8.5;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT

/**
 *
 *  @title: IPMB Staking Pools
 *  @date: 20-November-2024
 *  @version: 2.5
 *  @author: IPMB Dev Team
 */

import "./IERC20.sol";
import "./Ownable.sol";
import "./IPriceFeed.sol";

pragma solidity ^0.8.19;

contract IPMBStaking is Ownable {

    // pool structure

    struct poolStr {
        uint256 poolID;
        string poolName;
        uint256 duration;
        uint256 amount;
        uint256 discount;
        uint256 lockDuration;
        uint256 poolMax;
        bool status;
    }

    // address pool data structure

    struct addressStr {
        uint256 amount;
        uint256 dateDeposit;
        uint256 epoch;
        uint256 ipmbPrice;
        uint256 goldPrice;
    }

    // mappings declaration

    mapping (address => bool) public admin;
    mapping (address => bool) public authority;
    mapping (address => bool) public blacklist;
    mapping (uint256 => poolStr) public poolsRegistry;
    mapping (address => bool) public kycAddress;
    mapping (address => mapping (uint256 => uint256)) public addressCounter;
    mapping (address => mapping (uint256 => uint256[])) public addressArray;
    mapping (address => mapping (uint256 => mapping (uint256 => addressStr))) public addressDataNew;

    
    // variables declaration

    uint256 public nextpoolCounter;
    address public ipmbAddress;
    IPriceFeed public priceFeedAddress;
    address public gemMintingContract;
    uint256 public blackPeriod;
    uint256 public minDiscount;
    uint256 public maxDiscount;

    // modifiers

    modifier onlyAdmin() {
        require(admin[msg.sender] == true, "Not allowed");
        _;
    }

    modifier onlyAuthority() {
        require(admin[msg.sender] == true || authority[msg.sender] == true, "Not allowed");
        _;
    }

    // events

    event poolRegistration(uint256 indexed poolId);
    event poolUpdate(uint256 indexed poolId);
    event poolDeposit(uint256 indexed poolId, address indexed addr, uint256 indexed index, uint256 amount);
    event poolWithdrawal(uint256 indexed poolId, address indexed addr, uint256 indexed index, uint256 amount);
    event blacklistWithdrawal(uint256 indexed poolId, address indexed addr, uint256 indexed index, uint256 amount);
    event poolResetAfterMinting(uint256 indexed poolId, address indexed addr, uint256 indexed index);
    event adminStatus(address indexed addr, bool indexed status);
    event authorityStatus(address indexed addr, bool indexed status);
    event blacklistStatus(address indexed addr, bool indexed status);
    event updateBlackPeriod(uint256 indexed bperiod);
    event kycStatus(address indexed addr, bool indexed status);
    

    // constructor

    constructor (address _ipmbAddress, address _priceFeedAddress, uint256 _blackPeriod) {
        admin[msg.sender] = true;
        ipmbAddress = _ipmbAddress;
        nextpoolCounter = 1;
        priceFeedAddress = IPriceFeed(_priceFeedAddress);
        blackPeriod = _blackPeriod;
        minDiscount = 2;
        maxDiscount = 11;
    }

    // function to register a Pool

    function registerPool(string memory _poolName, uint256 _duration, uint256 _discount, uint256 _amount, uint256 _lockDuration, uint256 _poolMax) public onlyAdmin {
        require(_duration > 0 && _amount > 0 , "err");
        require(_discount >= minDiscount && _discount <= maxDiscount, "Check min & max");
        uint256 poolID = nextpoolCounter;
        poolsRegistry[poolID].poolID = poolID;
        poolsRegistry[poolID].poolName = _poolName;
        poolsRegistry[poolID].duration = _duration;
        poolsRegistry[poolID].amount = _amount;
        poolsRegistry[poolID].discount = _discount;
        poolsRegistry[poolID].lockDuration = _lockDuration;
        poolsRegistry[poolID].poolMax = _poolMax;
        poolsRegistry[poolID].status = true;
        emit poolRegistration(poolID);
        nextpoolCounter = nextpoolCounter + 1;
    }

    // function to deposit funds

    function depositPool(uint256 _poolID) public {
        require(kycAddress[msg.sender] == true, "No KYC");
        require(blacklist[msg.sender] == false, "Address is blacklisted");
        require(poolsRegistry[_poolID].status == true, "Pool is inactive");
        require(poolsRegistry[_poolID].poolMax > addressArray[msg.sender][_poolID].length, "Already deposited max times");
        require(IERC20(ipmbAddress).balanceOf(msg.sender) >= poolsRegistry[_poolID].amount, "Your ERC20 balance is not enough");
        (uint256 epoch, uint256 ipmbPrice, uint256 goldPrice, , ,) = priceFeedAddress.getLatestPrices();
        uint256 count = addressCounter[msg.sender][_poolID];
        addressDataNew[msg.sender][_poolID][count].amount = poolsRegistry[_poolID].amount;
        addressDataNew[msg.sender][_poolID][count].dateDeposit = block.timestamp;
        addressDataNew[msg.sender][_poolID][count].epoch = epoch;
        addressDataNew[msg.sender][_poolID][count].ipmbPrice = ipmbPrice;
        addressDataNew[msg.sender][_poolID][count].goldPrice = goldPrice;
        addressArray[msg.sender][_poolID].push(count);
        addressCounter[msg.sender][_poolID]++;
        IERC20(ipmbAddress).transferFrom(msg.sender, address(this), poolsRegistry[_poolID].amount);
        emit poolDeposit(_poolID, msg.sender, count, poolsRegistry[_poolID].amount);
    }

    // function to deposit multitimes

    function multiDepositPool(uint256[] memory _poolIDs, uint256[] memory _quantity) public {
        require(_poolIDs.length == _quantity.length , "Check lengths");
        for (uint256 i = 0; i < _poolIDs.length; i++) {
            for (uint256 y = 0; y < _quantity[i]; y++) {
                depositPool(_poolIDs[i]);
            }
        }
    }

    // function to withdrawl deposit amounts

    function withdrawalPool(uint256 _poolID, uint256 _index) public {
        require(blacklist[msg.sender] == false, "Address is blacklisted");
        require(addressDataNew[msg.sender][_poolID][_index].amount == poolsRegistry[_poolID].amount, "No deposit");
        require(block.timestamp >= addressDataNew[msg.sender][_poolID][_index].dateDeposit + poolsRegistry[_poolID].lockDuration, "Time has not passed");
        uint256 amount = addressDataNew[msg.sender][_poolID][_index].amount;
        addressDataNew[msg.sender][_poolID][_index].amount = 0;
        addressDataNew[msg.sender][_poolID][_index].dateDeposit = 0;
        addressDataNew[msg.sender][_poolID][_index].epoch = 0;
        addressDataNew[msg.sender][_poolID][_index].ipmbPrice = 0;
        addressDataNew[msg.sender][_poolID][_index].goldPrice = 0;
        for (uint256 i = 0; i < addressArray[msg.sender][_poolID].length; i++) {
            if (_index == addressArray[msg.sender][_poolID][i]) {
                addressArray[msg.sender][_poolID][i] = addressArray[msg.sender][_poolID][addressArray[msg.sender][_poolID].length-1];
                addressArray[msg.sender][_poolID].pop();
            }
        }
        IERC20(ipmbAddress).transfer(msg.sender, amount);
        emit poolWithdrawal(_poolID, msg.sender, _index, amount);
    }

    // function to update pool data

    function updatePoolData(uint256 _poolID, uint256 _poolMax, bool status) public onlyAdmin {
        poolsRegistry[_poolID].poolMax = _poolMax;
        poolsRegistry[_poolID].status = status;
        emit poolUpdate(_poolID);
    }

    // function to update address pool details after nft minting

    function updateAddressPool(address _address, uint256 _poolID, uint256 _index) public {
        require(msg.sender == gemMintingContract, "Not allowed");
        addressDataNew[_address][_poolID][_index].amount = 0;
        addressDataNew[_address][_poolID][_index].dateDeposit = 0;
        addressDataNew[_address][_poolID][_index].epoch = 0;
        addressDataNew[_address][_poolID][_index].ipmbPrice = 0;
        addressDataNew[_address][_poolID][_index].goldPrice = 0;
        emit poolResetAfterMinting(_poolID, _address, _index);
    }

    // function to add/remove an admin

    function addAdmin(address _address, bool _status) public onlyOwner {
        admin[_address] = _status;
        emit adminStatus(_address, _status);
    }

    // function to add/remove an authority

    function addAuthority(address _address, bool _status) public onlyOwner {
        authority[_address] = _status;
        emit authorityStatus(_address, _status);
    }

    // function to add/remove a wallet from blacklist

    function addBlacklist(address _address, bool _status) public onlyAuthority {
        blacklist[_address] = _status;
        emit blacklistStatus(_address, _status);
    }

    // function to set GEM minting contract

    function setGEMMintingContract(address _address) public onlyOwner {
        gemMintingContract = _address;
    }

    // function to update prices contract admin

    function updatePricesContract(address _address) public onlyOwner {
        priceFeedAddress = IPriceFeed(_address);
    }

    // function to approve GEM minting contract

    function approveGEMMintingContract(uint256 _amount) public onlyAdmin {
        IERC20(ipmbAddress).approve(gemMintingContract, _amount);
    }

    // function to modify the time that the blacklist funds can be withdrawl

    function changeBlackPeriod(uint256 _blackPeriod) public onlyAdmin {
        blackPeriod = _blackPeriod;
        emit updateBlackPeriod(_blackPeriod);
    }

    // function to update address kyc status

    function updateKYCAddress(address _address, bool _status) public onlyAdmin {
        kycAddress[_address] = _status;
        emit kycStatus(_address, _status);
    }

    // function to update the min and max % of discounts for pool registration

    function updateMinMaxDiscounts(uint256 _min, uint256 _max) public onlyAdmin {
        minDiscount = _min;
        maxDiscount = _max;
    }

    // function to update kyc status for multiple addresses

    function updateKYCAddressBatch(address[] memory _address, bool[] memory _status) public onlyAdmin {
        for (uint256 i = 0; i < _address.length; i++) {
            kycAddress[_address[i]] = _status[i];
            emit kycStatus(_address[i], _status[i]);
        }
    }

    // function to withdrawal blacklist amount for a blaclist address

    function blacklistAddressWithdrawalPool(address _receiver, address _address, uint256 _poolID, uint256 _index) public onlyOwner {
        require(blacklist[_address] == true, "Address is not blacklisted");
        require(addressDataNew[_address][_poolID][_index].amount == poolsRegistry[_poolID].amount, "No deposit");
        require(block.timestamp >= addressDataNew[_address][_poolID][_index].dateDeposit + blackPeriod, "Time has not passed");
        uint256 amount = addressDataNew[_address][_poolID][_index].amount;
        addressDataNew[_address][_poolID][_index].amount = 0;
        addressDataNew[_address][_poolID][_index].dateDeposit = 0;
        addressDataNew[_address][_poolID][_index].epoch = 0;
        addressDataNew[_address][_poolID][_index].ipmbPrice = 0;
        addressDataNew[_address][_poolID][_index].goldPrice = 0;
        IERC20(ipmbAddress).transfer(_receiver, amount);
        emit blacklistWithdrawal(_poolID, _address, _index, amount);
    }

    // retrieve discount

    function getDiscount(uint256 _poolID, address _address, uint256 _index) public view returns (uint256) {
        if ((addressDataNew[_address][_poolID][_index].amount == poolsRegistry[_poolID].amount) && (block.timestamp >= addressDataNew[_address][_poolID][_index].dateDeposit + poolsRegistry[_poolID].duration)) {
            return poolsRegistry[_poolID].discount;
        } else {
            return 0;
        }
    }

    // retrieve pool info

    function poolInfo(uint256 _poolID) public view returns (string memory, uint256, uint256, uint256, uint256, uint256, bool) {
        return (poolsRegistry[_poolID].poolName, poolsRegistry[_poolID].duration, poolsRegistry[_poolID].amount, poolsRegistry[_poolID].discount, poolsRegistry[_poolID].lockDuration, poolsRegistry[_poolID].poolMax, poolsRegistry[_poolID].status);
    }

    // retrieve pool price

    function poolPrice(uint256 _poolID) public view returns (uint256) {
        return (poolsRegistry[_poolID].amount);
    }

    // retrieve pool status

    function poolStatus(uint256 _poolID) public view returns (bool) {
        return (poolsRegistry[_poolID].status);
    }

    // retrieve pool discount

    function poolDiscount(uint256 _poolID) public view returns (uint256) {
        return (poolsRegistry[_poolID].discount);
    }

    // retrieve deposit amount

    function poolAmountPerAddress(uint256 _poolID, address _address, uint256 _index) public view returns (uint256) {
        return (addressDataNew[_address][_poolID][_index].amount);
    }

    // retrieve deposit amount

    function poolDataPerAddress(uint256 _poolID, address _address, uint256 _index) public view returns (uint256, uint256, uint256, uint256, uint256) {
        return (addressDataNew[_address][_poolID][_index].amount, addressDataNew[_address][_poolID][_index].dateDeposit, addressDataNew[_address][_poolID][_index].epoch, addressDataNew[_address][_poolID][_index].ipmbPrice, addressDataNew[_address][_poolID][_index].goldPrice);
    }

    // retrieve deposit date

    function poolDepositDatePerAddress(uint256 _poolID, address _address, uint256 _index) public view returns (uint256) {
        return (addressDataNew[_address][_poolID][_index].dateDeposit);
    }

    // retrieve ipmb price at pool deposit

    function poolIPMBPricePerAddress(uint256 _poolID, address _address, uint256 _index) public view returns (uint256) {
        return (addressDataNew[_address][_poolID][_index].ipmbPrice);
    }

    // retrieve gold price at pool deposit

    function poolGoldPricePerAddress(uint256 _poolID, address _address, uint256 _index) public view returns (uint256) {
        return (addressDataNew[_address][_poolID][_index].goldPrice);
    }

    // retrieve epoch at pool deposit

    function poolEpochPerAddress(uint256 _poolID, address _address, uint256 _index) public view returns (uint256) {
        return (addressDataNew[_address][_poolID][_index].epoch);
    }

    // retrieve KYC address status

    function retrieveKYCStatus(address _address) public view returns (bool) {
        return (kycAddress[_address]);
    }

    // retrieve the deposit indeces per address per pool

    function retrieveAddressArrayPool(address _address, uint256 _pool) public view returns (uint256[] memory) {
        return (addressArray[_address][_pool]);
    }

    // retrieve counter per address per pool

    function retrieveAddressCounterPool(address _address, uint256 _pool) public view returns (uint256) {
        return (addressCounter[_address][_pool]);
    }

    // retrieve blacklist status

    function retrieveBlackListStatus(address _address) public view returns (bool) {
        return (blacklist[_address]);
    }

}

// SPDX-License-Identifier: MIT

/**
 *
 * @title IPMB and Gold Price Feed Interface
 */

pragma solidity ^0.8.5;

interface IPriceFeed {

    function getLatestPrices() external view returns (uint256, uint256, uint256, uint256, bytes32, uint256);

    function getEpochPrices(uint256 _epoch) external view returns (uint256, uint256, uint256, bytes32, uint256);

    function getEpochDataSetHash(uint256 _epoch) external view returns (bytes32, bytes32);

}

// SPDX-License-Identifier: MIT

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

pragma solidity ^0.8.5;

/**
 * @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.
 */

 import "./Context.sol";
 
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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}