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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { ICurvePool } from "contracts/interfaces/external/curve/ICurvePool.sol";
import {
    ILiquidityConnector,
    AddLiquidityParams,
    RemoveLiquidityParams
} from "contracts/interfaces/ILiquidityConnector.sol";
import { IFarmConnector, Farm } from "contracts/interfaces/IFarmConnector.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

struct CurveAddLiquidityExtraData {
    uint256 minMintAmount;
}

interface IERC20Decimals {
    function decimals() external view returns (uint8);
}

contract CurvePoolConnector is ILiquidityConnector, IFarmConnector {
    error NotSupported();

    function addLiquidity(
        AddLiquidityParams memory addLiquidityParams
    ) external override {
        CurveAddLiquidityExtraData memory extraData = abi.decode(
            addLiquidityParams.extraData, (CurveAddLiquidityExtraData)
        );

        ICurvePool(addLiquidityParams.router).add_liquidity(
            addLiquidityParams.desiredAmounts, extraData.minMintAmount
        );
    }

    function removeLiquidity(
        RemoveLiquidityParams memory removeLiquidityParams
    ) external override {
        ICurvePool(removeLiquidityParams.router).remove_liquidity(
            removeLiquidityParams.lpAmountIn,
            removeLiquidityParams.minAmountsOut
        );
    }

    function getPoolPrice(
        address lpToken,
        uint256 baseTokenIndex,
        uint256 quoteTokenIndex
    ) external view override returns (uint256 price) {
        address baseToken = ICurvePool(lpToken).coins(baseTokenIndex);
        uint256 baseTokenDecimals = IERC20Decimals(baseToken).decimals();
        address quoteToken = ICurvePool(lpToken).coins(quoteTokenIndex);
        uint256 quoteTokenDecimals = IERC20Decimals(quoteToken).decimals();

        uint256 amountOut0 = ICurvePool(lpToken).get_dy(
            int128(uint128(baseTokenIndex)),
            int128(uint128(quoteTokenIndex)),
            10 ** baseTokenDecimals
        );

        // We swap e.g. 1e18 DAI for USDC. This will return 1e6 USDC.
        // The price is 1e-12 USDC wei for wei or 1e18 normalized (1e6 USDC per
        // 1e18 DAI, price is 1e18).
        // We swap e.g. 1e6 USDC for DAI. This will return 1e12 DAI.
        // The price is 1e12 DAI wei for wei or 1e18 normalized (1e18 DAI per
        // 1e6 USDC, price is 1e18).
        if (amountOut0 > 0) {
            price = amountOut0 * 10 ** (18 - quoteTokenDecimals);
        } else {
            // e.g. 1e18 of base token is < 1 wei of quote token
            uint256 amountOut1 = ICurvePool(lpToken).get_dy(
                int128(uint128(quoteTokenIndex)),
                int128(uint128(baseTokenIndex)),
                10 ** quoteTokenDecimals
            );
            if (amountOut1 == 0) {
                revert InvalidPrice();
            }
            price = 1e36 / (amountOut1 * 10 ** (18 - baseTokenDecimals));
        }

        if (price == 0) {
            revert InvalidPrice();
        }
    }

    function getReserves(
        address lpToken
    ) external view override returns (uint256[] memory reserves) {
        reserves = ICurvePool(lpToken).get_balances();
    }

    function getTokens(
        address lpToken
    ) external view override returns (address[] memory tokens) {
        tokens = new address[](ICurvePool(lpToken).N_COINS());
        for (uint256 i = 0; i < tokens.length; i++) {
            tokens[i] = ICurvePool(lpToken).coins(i);
        }
    }

    // IFarmConnector implementation - no-op for pools without gauges
    // LP tokens stay in the caller's wallet (Sickle)

    function deposit(
        Farm calldata, // farm
        address, // token
        bytes memory // _extraData
    ) external pure override {
        // No-op: LP tokens stay in the caller's wallet
    }

    function withdraw(
        Farm calldata, // farm
        uint256, // amount
        bytes memory // _extraData
    ) external pure override {
        // No-op: LP tokens are already in the caller's wallet
    }

    function claim(
        Farm calldata, // farm
        bytes memory // extraData
    ) external pure override {
        // No-op: No rewards to claim for pools without gauges
    }

    function balanceOf(
        Farm calldata farm,
        address user
    ) external view override returns (uint256) {
        // Return the LP token balance directly from the pool
        return IERC20(farm.stakingContract).balanceOf(user);
    }

    function earned(
        Farm calldata, // farm
        address, // user
        address[] calldata rewardTokens
    ) external pure override returns (uint256[] memory) {
        // No rewards for pools without gauges
        uint256[] memory rewards = new uint256[](rewardTokens.length);
        return rewards;
    }

    function isStaked(
        Farm calldata, // farm
        address // user
    ) external pure override returns (bool) {
        // LP tokens are held but not staked
        return false;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface ICurvePool {
    // Events
    event Transfer(
        address indexed sender, address indexed receiver, uint256 value
    );
    event Approval(
        address indexed owner, address indexed spender, uint256 value
    );
    event TokenExchange(
        address indexed buyer,
        int128 sold_id,
        uint256 tokens_sold,
        int128 bought_id,
        uint256 tokens_bought
    );
    event TokenExchangeUnderlying(
        address indexed buyer,
        int128 sold_id,
        uint256 tokens_sold,
        int128 bought_id,
        uint256 tokens_bought
    );
    event AddLiquidity(
        address indexed provider,
        uint256[] token_amounts,
        uint256[] fees,
        uint256 invariant,
        uint256 token_supply
    );
    event RemoveLiquidity(
        address indexed provider,
        uint256[] token_amounts,
        uint256[] fees,
        uint256 token_supply
    );
    event RemoveLiquidityOne(
        address indexed provider,
        int128 token_id,
        uint256 token_amount,
        uint256 coin_amount,
        uint256 token_supply
    );
    event RemoveLiquidityImbalance(
        address indexed provider,
        uint256[] token_amounts,
        uint256[] fees,
        uint256 invariant,
        uint256 token_supply
    );
    event RampA(
        uint256 old_A, uint256 new_A, uint256 initial_time, uint256 future_time
    );
    event StopRampA(uint256 A, uint256 t);
    event ApplyNewFee(uint256 fee, uint256 offpeg_fee_multiplier);
    event SetNewMATime(uint256 ma_exp_time, uint256 D_ma_time);

    // Exchange functions
    function exchange(
        int128 i,
        int128 j,
        uint256 _dx,
        uint256 _min_dy
    ) external returns (uint256);
    function exchange(
        int128 i,
        int128 j,
        uint256 _dx,
        uint256 _min_dy,
        address _receiver
    ) external returns (uint256);
    function exchange_received(
        int128 i,
        int128 j,
        uint256 _dx,
        uint256 _min_dy
    ) external returns (uint256);
    function exchange_received(
        int128 i,
        int128 j,
        uint256 _dx,
        uint256 _min_dy,
        address _receiver
    ) external returns (uint256);

    // Liquidity functions
    function add_liquidity(
        uint256[] calldata _amounts,
        uint256 _min_mint_amount
    ) external returns (uint256);
    function add_liquidity(
        uint256[] calldata _amounts,
        uint256 _min_mint_amount,
        address _receiver
    ) external returns (uint256);
    function remove_liquidity_one_coin(
        uint256 _burn_amount,
        int128 i,
        uint256 _min_received
    ) external returns (uint256);
    function remove_liquidity_one_coin(
        uint256 _burn_amount,
        int128 i,
        uint256 _min_received,
        address _receiver
    ) external returns (uint256);
    function remove_liquidity_imbalance(
        uint256[] calldata _amounts,
        uint256 _max_burn_amount
    ) external returns (uint256);
    function remove_liquidity_imbalance(
        uint256[] calldata _amounts,
        uint256 _max_burn_amount,
        address _receiver
    ) external returns (uint256);
    function remove_liquidity(
        uint256 _burn_amount,
        uint256[] calldata _min_amounts
    ) external returns (uint256[] memory);
    function remove_liquidity(
        uint256 _burn_amount,
        uint256[] calldata _min_amounts,
        address _receiver
    ) external returns (uint256[] memory);
    function remove_liquidity(
        uint256 _burn_amount,
        uint256[] calldata _min_amounts,
        address _receiver,
        bool _claim_admin_fees
    ) external returns (uint256[] memory);

    // Admin functions
    function withdraw_admin_fees() external;
    function ramp_A(uint256 _future_A, uint256 _future_time) external;
    function stop_ramp_A() external;
    function set_new_fee(
        uint256 _new_fee,
        uint256 _new_offpeg_fee_multiplier
    ) external;
    function set_ma_exp_time(
        uint256 _ma_exp_time,
        uint256 _D_ma_time
    ) external;

    // View functions
    function last_price(
        uint256 i
    ) external view returns (uint256);
    function ema_price(
        uint256 i
    ) external view returns (uint256);
    function get_p(
        uint256 i
    ) external view returns (uint256);
    function price_oracle(
        uint256 i
    ) external view returns (uint256);
    function D_oracle() external view returns (uint256);
    function get_dx(
        int128 i,
        int128 j,
        uint256 dy
    ) external view returns (uint256);
    function get_dy(
        int128 i,
        int128 j,
        uint256 dx
    ) external view returns (uint256);
    function calc_withdraw_one_coin(
        uint256 _burn_amount,
        int128 i
    ) external view returns (uint256);
    function calc_token_amount(
        uint256[] calldata _amounts,
        bool _is_deposit
    ) external view returns (uint256);
    function get_virtual_price() external view returns (uint256);
    function get_balances() external view returns (uint256[] memory);
    function stored_rates() external view returns (uint256[] memory);
    function dynamic_fee(int128 i, int128 j) external view returns (uint256);

    // ERC20 functions
    function transfer(address _to, uint256 _value) external returns (bool);
    function transferFrom(
        address _from,
        address _to,
        uint256 _value
    ) external returns (bool);
    function approve(
        address _spender,
        uint256 _value
    ) external returns (bool);
    function permit(
        address _owner,
        address _spender,
        uint256 _value,
        uint256 _deadline,
        uint8 _v,
        bytes32 _r,
        bytes32 _s
    ) external returns (bool);
    function totalSupply() external view returns (uint256);
    function balanceOf(
        address arg0
    ) external view returns (uint256);
    function allowance(
        address arg0,
        address arg1
    ) external view returns (uint256);

    // Additional view functions
    function A() external view returns (uint256);
    function A_precise() external view returns (uint256);
    function version() external view returns (string memory);
    function N_COINS() external view returns (uint256);
    function coins(
        uint256 arg0
    ) external view returns (address);
    function fee() external view returns (uint256);
    function offpeg_fee_multiplier() external view returns (uint256);
    function admin_fee() external view returns (uint256);
    function initial_A() external view returns (uint256);
    function future_A() external view returns (uint256);
    function initial_A_time() external view returns (uint256);
    function future_A_time() external view returns (uint256);
    function admin_balances(
        uint256 arg0
    ) external view returns (uint256);
    function ma_exp_time() external view returns (uint256);
    function D_ma_time() external view returns (uint256);
    function ma_last_time() external view returns (uint256);
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function nonces(
        address arg0
    ) external view returns (uint256);
    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function salt() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {
    AddLiquidityParams,
    RemoveLiquidityParams
} from "contracts/structs/LiquidityStructs.sol";

interface ILiquidityConnector {
    error InvalidPrice();

    function addLiquidity(
        AddLiquidityParams memory addLiquidityParams
    ) external;

    function removeLiquidity(
        RemoveLiquidityParams memory removeLiquidityParams
    ) external;

    function getPoolPrice(
        address lpToken,
        uint256 baseTokenIndex,
        uint256 quoteTokenIndex
    ) external view returns (uint256);

    function getReserves(
        address lpToken
    ) external view returns (uint256[] memory reserves);

    function getTokens(
        address lpToken
    ) external view returns (address[] memory tokens);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { Farm } from "contracts/structs/FarmStrategyStructs.sol";

interface IFarmConnector {
    function deposit(
        Farm calldata farm,
        address token,
        bytes memory extraData
    ) external;

    function withdraw(
        Farm calldata farm,
        uint256 amount,
        bytes memory extraData
    ) external;

    function claim(Farm calldata farm, bytes memory extraData) external;

    function balanceOf(
        Farm calldata farm,
        address user
    ) external view returns (uint256);

    function earned(
        Farm calldata farm,
        address user,
        address[] calldata rewardTokens
    ) external view returns (uint256[] memory);

    function isStaked(
        Farm calldata farm,
        address user
    ) external view returns (bool);
}

// 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);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

struct AddLiquidityParams {
    address router;
    address lpToken;
    address[] tokens;
    uint256[] desiredAmounts;
    uint256[] minAmounts;
    bytes extraData;
}

struct RemoveLiquidityParams {
    address router;
    address lpToken;
    address[] tokens;
    uint256 lpAmountIn;
    uint256[] minAmountsOut;
    bytes extraData;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

import { ZapIn, ZapOut } from "contracts/structs/ZapStructs.sol";
import { SwapParams } from "contracts/structs/SwapStructs.sol";

struct Farm {
    address stakingContract;
    uint256 poolIndex;
}

struct DepositParams {
    Farm farm;
    address[] tokensIn;
    uint256[] amountsIn;
    ZapIn zap;
    bytes extraData;
}

struct WithdrawParams {
    bytes extraData;
    ZapOut zap;
    address[] tokensOut;
}

struct HarvestParams {
    SwapParams[] swaps;
    bytes extraData;
    address[] tokensOut;
}

struct CompoundParams {
    Farm claimFarm;
    bytes claimExtraData;
    address[] rewardTokens;
    ZapIn zap;
    Farm depositFarm;
    bytes depositExtraData;
}

struct SimpleDepositParams {
    Farm farm;
    address lpToken;
    uint256 amountIn;
    bytes extraData;
}

struct SimpleHarvestParams {
    address[] rewardTokens;
    bytes extraData;
}

struct SimpleWithdrawParams {
    address lpToken;
    uint256 amountOut;
    bytes extraData;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { SwapParams } from "contracts/structs/SwapStructs.sol";

import {
    AddLiquidityParams,
    RemoveLiquidityParams
} from "contracts/structs/LiquidityStructs.sol";

struct ZapIn {
    SwapParams[] swaps;
    AddLiquidityParams addLiquidityParams;
}

struct ZapOut {
    RemoveLiquidityParams removeLiquidityParams;
    SwapParams[] swaps;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

struct SwapParams {
    address tokenApproval;
    address router;
    uint256 amountIn;
    uint256 desiredAmountOut;
    uint256 minAmountOut;
    address tokenIn;
    address tokenOut;
    bytes extraData;
}

{
  "remappings": [
    "solmate/=lib/solmate/src/",
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "@morpho-blue/=lib/morpho-blue/src/",
    "ds-test/=lib/solmate/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "morpho-blue/=lib/morpho-blue/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false
}

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