Contract 0xaeb1afb8cc711f388c0acd8e7026c167b25619a6

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.8.4;

import "./interfaces/IInstantPool.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract InstantPool is IInstantPool, ERC20, Ownable, ReentrancyGuard {

    modifier nonZeroAddress(address _address) {
        require(_address != address(0), "InstantPool: zero address");
        _;
    }

    // Constants
    uint constant MAX_INSTANT_PERCENTAGE_FEE = 10000;

    address public override teleBTC;
    uint public override instantPercentageFee; // a number between 0-10000 to show %0.01
    uint public override totalAddedTeleBTC;
    address public override instantRouter;

    constructor(
        address _teleBTC,
        address _instantRouter,
        uint _instantPercentageFee,
        string memory _name,
        string memory _symbol
    ) ERC20(_name, _symbol) {
        _setTeleBTC(_teleBTC);
        _setInstantRouter(_instantRouter);
        _setInstantPercentageFee(_instantPercentageFee);

        emit CreatedInstantPool(_teleBTC);
    }

    function renounceOwnership() public virtual override onlyOwner {}

    /// @notice                               Gives available teleBTC amount
    /// @return                               Available amount of teleBTC that can be borrowed
    function availableTeleBTC() override public view returns (uint) {
        return IERC20(teleBTC).balanceOf(address(this));
    }

    /// @notice                               Gives the unpaid loans amount
    /// @return                               Amount of teleBTC that has been borrowed but has not been paid back
    function totalUnpaidLoan() override external view returns (uint) {
        uint _availableTeleBTC = availableTeleBTC();
        return totalAddedTeleBTC >= _availableTeleBTC ? totalAddedTeleBTC - _availableTeleBTC : 0;
    }

    /// @notice                 Changes instant router contract address
    /// @dev                    Only owner can call this
    /// @param _instantRouter   The new instant router contract address
    function setInstantRouter(address _instantRouter) external override onlyOwner {
        _setInstantRouter(_instantRouter);
    }

    /// @notice                        Changes instant loan fee
    /// @dev                           Only current owner can call this
    /// @param _instantPercentageFee   The new percentage fee
    function setInstantPercentageFee(uint _instantPercentageFee) external override onlyOwner {
        _setInstantPercentageFee(_instantPercentageFee);
    }

    /// @notice                 Changes teleBTC contract address
    /// @dev                    Only owner can call this
    /// @param _teleBTC         The new teleBTC contract address
    function setTeleBTC(address _teleBTC) external override onlyOwner {
        _setTeleBTC(_teleBTC);
    }

    /// @notice                 Internal setter for instant router contract address
    /// @param _instantRouter   The new instant router contract address
    function _setInstantRouter(address _instantRouter) nonZeroAddress(_instantRouter) private {
        emit NewInstantRouter(instantRouter, _instantRouter);
        instantRouter = _instantRouter;
    }

    /// @notice                         Internal setter for instant loan fee
    /// @param _instantPercentageFee    The new percentage fee
    function _setInstantPercentageFee(uint _instantPercentageFee) private {
        emit NewInstantPercentageFee(instantPercentageFee, _instantPercentageFee);
        require(
            _instantPercentageFee <= MAX_INSTANT_PERCENTAGE_FEE,
            "InstantPool: amount more than max"
        );
        instantPercentageFee = _instantPercentageFee;
    }

    /// @notice                 Internal setter for teleBTC contract address
    /// @param _teleBTC         The new teleBTC contract address
    function _setTeleBTC(address _teleBTC) nonZeroAddress(_teleBTC) private {
        emit NewTeleBTC(teleBTC, _teleBTC);
        teleBTC = _teleBTC;
    }

    function getFee(uint _loanAmount) external view override returns (uint) {
        return _loanAmount*instantPercentageFee/MAX_INSTANT_PERCENTAGE_FEE;
    }

    /// @notice               Adds liquidity to instant pool
    /// @dev
    /// @param _user          Address of user who receives instant pool token
    /// @param _amount        Amount of liquidity that user wants to add
    /// @return               Amount of instant pool token that user receives
    function addLiquidity(address _user, uint _amount) external nonReentrant override returns (uint) {
        require(_amount > 0, "InstantPool: input amount is zero");
        uint instantPoolTokenAmount;
        // Transfers teleBTC from user
        IERC20(teleBTC).transferFrom(_msgSender(), address(this), _amount);
        if (totalAddedTeleBTC == 0 || totalSupply() == 0) {
            instantPoolTokenAmount = _amount;
        } else {
            instantPoolTokenAmount = _amount*totalSupply()/totalAddedTeleBTC;
        }
        totalAddedTeleBTC = totalAddedTeleBTC + _amount;
        // Mints instant pool token for user
        _mint(_user, instantPoolTokenAmount);
        emit AddLiquidity(_user, _amount, instantPoolTokenAmount);
        return instantPoolTokenAmount;
    }

    /// @notice               Adds liquidity to instant pool without minting instant pool tokens
    /// @dev                  Updates totalAddedTeleBTC (transferring teleBTC directly does not update it)
    /// @param _amount        Amount of liquidity that user wants to add
    /// @return               True if liquidity is added successfully
    function addLiquidityWithoutMint(uint _amount) external nonReentrant override returns (bool) {
        require(_amount > 0, "InstantPool: input amount is zero");
        // Transfers teleBTC from user
        IERC20(teleBTC).transferFrom(_msgSender(), address(this), _amount);
        totalAddedTeleBTC = totalAddedTeleBTC + _amount;
        emit AddLiquidity(_msgSender(), _amount, 0);
        return true;
    }

    /// @notice                               Removes liquidity from instant pool
    /// @dev
    /// @param _user                          Address of user who receives teleBTC
    /// @param _instantPoolTokenAmount        Amount of instant pool token that is burnt
    /// @return                               Amount of teleBTC that user receives
    function removeLiquidity(address _user, uint _instantPoolTokenAmount) external nonReentrant override returns (uint) {
        require(_instantPoolTokenAmount > 0, "InstantPool: input amount is zero");
        require(balanceOf(_msgSender()) >= _instantPoolTokenAmount, "InstantPool: balance is not sufficient");
        uint teleBTCAmount = _instantPoolTokenAmount*totalAddedTeleBTC/totalSupply();
        totalAddedTeleBTC = totalAddedTeleBTC - teleBTCAmount;
        _burn(_msgSender(), _instantPoolTokenAmount);
        IERC20(teleBTC).transfer(_user, teleBTCAmount);
        emit RemoveLiquidity(_msgSender(), teleBTCAmount, _instantPoolTokenAmount);
        return teleBTCAmount;
    }

    /// @notice                               Gives loan to user
    /// @dev                                  Only instant router contract can call this
    /// @param _user                          Address of user who wants loan
    /// @param _amount                        Amount of requested loan
    /// @return                               Amount of given loan after reducing the fee
    function getLoan(address _user, uint _amount) nonReentrant override external returns (bool) {
        require(_msgSender() == instantRouter, "InstantPool: sender is not allowed");
        require(availableTeleBTC() >= _amount, "InstantPool: liquidity is not sufficient");
        // Instant fee increases the total teleBTC amount
        uint instantFee = _amount*instantPercentageFee/MAX_INSTANT_PERCENTAGE_FEE;
        IERC20(teleBTC).transfer(_user, _amount);
        emit InstantLoan(_user, _amount, instantFee);
        return true;
    }

}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.8.4;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IInstantPool is IERC20 {

	// Events

	/// @notice 							emits when an instant pool is created 
	/// @param instantToken 				The instant token of this instant pool
	event CreatedInstantPool(address indexed instantToken);

	/// @notice                             emits when some liquidity gets added to the pool               
	/// @param user                         User who added the liquidity
	/// @param teleBTCAmount                Amount of teleBTC added to the pool
	/// @param instantPoolTokenAmount       User's share from the pool
	event AddLiquidity(address indexed user, uint teleBTCAmount, uint instantPoolTokenAmount); 

	/// @notice                             Emits when some liquidity gets removed from the pool
	/// @param user                         User who removed the liquidity
	/// @param teleBTCAmount                Amount of teleBTC removed from the pool
	/// @param instantPoolTokenAmount       User's share from the pool
	event RemoveLiquidity(address indexed user, uint teleBTCAmount, uint instantPoolTokenAmount);

	/// @notice                       		Gets an instant loan from the contract
	/// @param user                   		User who wants to get the loan
	/// @param requestedAmount        		Amount of loan requested and sent to the user
	/// @param instantFee             		Amount of fee that the user should pay back later with the loan
	event InstantLoan(address indexed user, uint256 requestedAmount, uint instantFee);

	/// @notice                       		Emits when changes made to instant router address
	event NewInstantRouter(address oldInstantRouter, address newInstaneRouter);

	/// @notice                       		Emits when changes made to instant percentage fee
	event NewInstantPercentageFee(uint oldInstantPercentageFee, uint newInstantPercentageFee);

	/// @notice                       		Emits when changes made to TeleBTC address
	event NewTeleBTC(address oldTeleBTC, address newTeleBTC);

	// Read-only functions

	function teleBTC() external view returns (address);

	function instantRouter() external view returns (address);

	function totalAddedTeleBTC() external view returns (uint);

	function availableTeleBTC() external view returns (uint);

	function totalUnpaidLoan() external view returns (uint);

	function instantPercentageFee() external view returns (uint);

	function getFee(uint _loanAmount) external view returns (uint);

	// State-changing functions

	function setInstantRouter(address _instantRouter) external;

	function setInstantPercentageFee(uint _instantPercentageFee) external;

	function setTeleBTC(address _teleBTC) external;

	function addLiquidity(address _user, uint _amount) external returns (uint);

	function addLiquidityWithoutMint(uint _amount) external returns (bool);

	function removeLiquidity(address _user, uint _instantPoolTokenAmount) external returns (uint);

	function getLoan(address _user, uint _amount) external returns (bool);

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

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 make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

        _;

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT

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;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"_teleBTC","type":"address"},{"internalType":"address","name":"_instantRouter","type":"address"},{"internalType":"uint256","name":"_instantPercentageFee","type":"uint256"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"teleBTCAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"instantPoolTokenAmount","type":"uint256"}],"name":"AddLiquidity","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"instantToken","type":"address"}],"name":"CreatedInstantPool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"requestedAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"instantFee","type":"uint256"}],"name":"InstantLoan","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldInstantPercentageFee","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newInstantPercentageFee","type":"uint256"}],"name":"NewInstantPercentageFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldInstantRouter","type":"address"},{"indexed":false,"internalType":"address","name":"newInstaneRouter","type":"address"}],"name":"NewInstantRouter","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldTeleBTC","type":"address"},{"indexed":false,"internalType":"address","name":"newTeleBTC","type":"address"}],"name":"NewTeleBTC","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"teleBTCAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"instantPoolTokenAmount","type":"uint256"}],"name":"RemoveLiquidity","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"addLiquidity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"addLiquidityWithoutMint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"availableTeleBTC","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_loanAmount","type":"uint256"}],"name":"getFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"getLoan","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"instantPercentageFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"instantRouter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint256","name":"_instantPoolTokenAmount","type":"uint256"}],"name":"removeLiquidity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_instantPercentageFee","type":"uint256"}],"name":"setInstantPercentageFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_instantRouter","type":"address"}],"name":"setInstantRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_teleBTC","type":"address"}],"name":"setTeleBTC","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"teleBTC","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAddedTeleBTC","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalUnpaidLoan","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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