// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @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);
}

// File: contracts/PP2LockLp.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract PP2LockLp {
    IERC20 public lpToken;
    address public depositor;
    uint256 public unlockTime;

    constructor(IERC20 _lpToken, address _depositor) {
        lpToken = _lpToken;
        depositor = _depositor;
    }

    // lock LP for 30 days
    function deposit() external onlyDepositor {
        lpToken.transferFrom(
            msg.sender,
            address(this),
            lpToken.balanceOf(msg.sender)
        );
        unlockTime = block.timestamp + 30 days;
    }

    // withdraw LP after unlock time
    function withdraw() external onlyDepositor {
        require(block.timestamp >= unlockTime, "Too early");
        lpToken.transfer(msg.sender, lpToken.balanceOf(address(this)));
    }

    // team can increase lock time if needed
    function addDaysToLock(uint256 _days) external onlyDepositor {
        unlockTime = block.timestamp + _days * 1 days;
    }

    // in case everything goes well with launch, team can burn LP forever voiding the lock
    function burn() external onlyDepositor {
        lpToken.transfer(address(0xdead), lpToken.balanceOf(address(this)));
    }

    modifier onlyDepositor() {
        require(msg.sender == depositor, "Only depositor");
        _;
    }
}