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// SPDX-License-Identifier: UNLICENSED
pragma solidity >=0.8.25;

import { IERC20 } from "@openzeppelin/contracts/interfaces/IERC20.sol";
import { ReentrancyGuard } from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";

interface ILiquidityManager {
    function owner() external view returns (address);
}

contract BootstrapPool is ReentrancyGuard { 
    address public immutable owner;
    uint256 public immutable fee;
    IERC20 public immutable agentToken;
    IERC20 public immutable currencyToken;
    uint256 public phantomAmount;
    uint256 public currencyTokenFeeEarned;
    uint256 public agentTokenFeeEarned;
    bool public killed;

    modifier notKilled() {
        if (killed) revert BootstrapPoolKilled();
        _;
    }

    modifier onlyOwner() {
        if (msg.sender != owner) revert NotOwner();
        _;
    }

    constructor(
        IERC20 _currencyToken,
        IERC20 _agentToken,
        uint256 _initialPrice,
        uint256 _bootstrapAmount,
        uint256 _fee
    ) {
        owner = msg.sender;
        fee = 10_000 - _fee; // TODO: why?
        currencyToken = _currencyToken;
        agentToken = _agentToken;
        phantomAmount = _initialPrice * _bootstrapAmount / 1e18;
    }

    function buy(uint256 _amountIn) external returns (uint256) {
        return buy(_amountIn, msg.sender);
    }

    function buy(uint256 _amountIn, address _recipient) public nonReentrant notKilled returns (uint256) {
        uint256 _amountOut = getAmountOut(_amountIn, address(currencyToken));
        currencyTokenFeeEarned += _amountIn - (_amountIn * fee) / 10_000;
        currencyToken.transferFrom(msg.sender, address(this), _amountIn);
        agentToken.transfer(_recipient, _amountOut);
        emit Swap(msg.sender, _amountIn, 0, 0, _amountOut, _recipient);
        return _amountOut;
    }

    function sell(uint256 _amountIn) external returns (uint256) {
        return sell(_amountIn, msg.sender);
    }

    function sell(uint256 _amountIn, address _recipient) public nonReentrant notKilled returns (uint256) {
        uint256 _amountOut = getAmountOut(_amountIn, address(agentToken));
        agentTokenFeeEarned += _amountIn - (_amountIn * fee) / 10_000;
        agentToken.transferFrom(msg.sender, address(this), _amountIn);
        currencyToken.transfer(_recipient, _amountOut);
        require(currencyToken.balanceOf(address(this)) >= currencyTokenFeeEarned, "INSUFFICIENT_LIQUIDITY");
        emit Swap(msg.sender, 0, _amountIn, _amountOut, 0, _recipient);
        return _amountOut;
    }

    function kill() external nonReentrant onlyOwner {
        _sweepFees();
        killed = true;
        agentToken.transfer(owner, agentToken.balanceOf(address(this)));
        currencyToken.transfer(owner, currencyToken.balanceOf(address(this)));
    }

    function getPrice() external view notKilled returns (uint256 _price) {
        (uint256 _reserveCurrencyToken, uint256 _reserveAgentToken) = getReserves();
        _price = _reserveCurrencyToken * 1e18 / _reserveAgentToken;
    }

    function getReserves() public view returns (uint256 _reserveCurrencyToken, uint256 _reserveAgentToken) {
        _reserveCurrencyToken = phantomAmount + currencyToken.balanceOf(address(this)) - currencyTokenFeeEarned;
        _reserveAgentToken = agentToken.balanceOf(address(this)) - agentTokenFeeEarned;
    }

    function getAmountOut(uint256 _amountIn, address _tokenIn) public view notKilled returns (uint256 _amountOut) {
        uint256 _reserveIn;
        uint256 _reserveOut;
        if (_tokenIn == address(currencyToken)) {
            (_reserveIn, _reserveOut) = getReserves();
        } else if (_tokenIn == address(agentToken)) {
            (_reserveOut, _reserveIn) = getReserves();
        }
        require(_amountIn > 0 && _reserveIn > 0 && _reserveOut > 0); // INSUFFICIENT_INPUT_AMOUNT/INSUFFICIENT_LIQUIDITY
        uint256 _amountInWithFee = _amountIn * fee;
        uint256 _numerator = _amountInWithFee * _reserveOut;
        uint256 _denominator = (_reserveIn * 10_000) + _amountInWithFee;
        _amountOut = _numerator / _denominator;
    }

    function getAmountIn(uint256 _amountOut, address _tokenOut) public view notKilled returns (uint256 _amountIn) {
        uint256 _reserveIn;
        uint256 _reserveOut;
        if (_tokenOut == address(agentToken)) {
            (_reserveIn, _reserveOut) = getReserves();
        } else if (_tokenOut == address(currencyToken)) {
            (_reserveOut, _reserveIn) = getReserves();
        }
        require(_amountOut > 0 && _reserveIn > 0 && _reserveOut > 0); // INSUFFICIENT_INPUT_AMOUNT/INSUFFICIENT_LIQUIDITY
        uint256 _numerator = _amountOut * _reserveIn * 10_000;
        uint256 _denominator = (_reserveOut -  _amountOut) * fee;
        _amountIn = _numerator / _denominator;
    }
    
    function maxSwapAmount(address _tokenIn) public view returns (uint256 _amountIn) {
        if (_tokenIn==address(currencyToken)) _amountIn = type(uint256).max;
        else if (_tokenIn==address(agentToken)) _amountIn = getAmountIn(currencyToken.balanceOf(address(this)) - currencyTokenFeeEarned, address(currencyToken));
    }

    function sweepFees() public nonReentrant {
        _sweepFees();
    }

    function _sweepFees() internal {
        address feeTo = ILiquidityManager(owner).owner();
        currencyToken.transfer(feeTo, currencyTokenFeeEarned);
        agentToken.transfer(feeTo, agentTokenFeeEarned);
        currencyTokenFeeEarned = 0;
        agentTokenFeeEarned = 0;        
    }

    function token0() external view returns (address) {
        return address(currencyToken);
    }

    function token1() external view returns (address) {
        return address(agentToken);
    }

    error BootstrapPoolKilled();
    error NotOwner();

    /// @notice Emitted when there is a swap in the pool
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @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 EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * 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;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    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
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // 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;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

{
  "remappings": [
    "@chainlink/=node_modules/@chainlink/",
    "@eth-optimism/=node_modules/@eth-optimism/",
    "@openzeppelin/=node_modules/@openzeppelin/",
    "@prb/test/=node_modules/dev-fraxswap/node_modules/@prb/test/",
    "@uniswap/=node_modules/@uniswap/",
    "dev-fraxswap/=node_modules/dev-fraxswap/",
    "ds-test/=node_modules/ds-test/",
    "forge-std/=node_modules/forge-std/",
    "frax-standard-solidity/=node_modules/frax-standard-solidity/",
    "frax-std/=node_modules/dev-fraxswap/node_modules/frax-standard-solidity/src/",
    "solidity-bytes-utils/=node_modules/solidity-bytes-utils/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": false,
  "libraries": {}
}

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0000000000000000000000006efb84bda519726fa1c65558e520b92b517121010000000000000000000000006efb84bda519726fa1c65558e520b92b51712101000000000000000000000000000000000000000000000000002c68af0bb1400000000000000000000000000000000000000000000000003635c9adc5dea000000000000000000000000000000000000000000000000000000000000000000064

-----Decoded View---------------
Arg [0] : _currencyToken (address): 0x6EFB84bda519726Fa1c65558e520B92b51712101
Arg [1] : _agentToken (address): 0x6EFB84bda519726Fa1c65558e520B92b51712101
Arg [2] : _initialPrice (uint256): 12500000000000000
Arg [3] : _bootstrapAmount (uint256): 1000000000000000000000
Arg [4] : _fee (uint256): 100

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000006efb84bda519726fa1c65558e520b92b51712101
Arg [1] : 0000000000000000000000006efb84bda519726fa1c65558e520b92b51712101
Arg [2] : 000000000000000000000000000000000000000000000000002c68af0bb14000
Arg [3] : 00000000000000000000000000000000000000000000003635c9adc5dea00000
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000064