# @version 0.4.3
"""
@title StakeZap
@author Yield Basis
@license GNU Affero General Public License v3.0
"""
from ethereum.ercs import IERC20

interface LT:
    def deposit(assets: uint256, debt: uint256, min_shares: uint256) -> uint256: nonpayable
    def withdraw(shares: uint256, min_assets: uint256, receiver: address) -> uint256: nonpayable
    def approve(_to: address, _value: uint256) -> bool: nonpayable
    def ASSET_TOKEN() -> IERC20: view

interface LiquidityGauge:
    def deposit(assets: uint256, receiver: address) -> uint256: nonpayable
    def redeem(shares: uint256, receiver: address, owner: address) -> uint256: nonpayable
    def LP_TOKEN() -> LT: view
    def transferFrom(_from: address, _to: address, _value: uint256) -> bool: nonpayable


approvals: HashMap[LiquidityGauge, bool]


@internal
def _approve_all(gauge: LiquidityGauge, lt: LT, asset: IERC20):
    if not self.approvals[gauge]:
        assert extcall asset.approve(lt.address, max_value(uint256), default_return_value=True)
        extcall lt.approve(gauge.address, max_value(uint256))
        self.approvals[gauge] = True


@external
def deposit_and_stake(gauge: LiquidityGauge, assets: uint256, debt: uint256, min_shares: uint256, receiver: address = msg.sender) -> uint256:
    """
    @notice Deposit cryptoasset into LT contract and stake in LiquidityGauge for user
    @param gauge Gauge to stake in (LP token address is taken from gauge)
    @param assets Amount of cryptotokens to deposit
    @param debt Debt size to take when creating the position
    @param min_shares Minimal amount of LT tokens to create upon deposit
    @param receiver Address to send gauge tokens to
    """
    lt: LT = staticcall gauge.LP_TOKEN()
    asset: IERC20 = staticcall lt.ASSET_TOKEN()
    self._approve_all(gauge, lt, asset)
    assert extcall asset.transferFrom(msg.sender, self, assets, default_return_value=True)
    lt_tokens: uint256 = extcall lt.deposit(assets, debt, min_shares)
    return extcall gauge.deposit(lt_tokens, receiver)


@external
def withdraw_and_unstake(gauge: LiquidityGauge, shares: uint256, min_assets: uint256, receiver: address = msg.sender) -> uint256:
    """
    @notice Unstake LT from gauge and withdraw to receive cryptoassets
    @param gauge Gauge to unstake
    @param shares Amount of gauge tokens to unstake
    @param min_assets Minimal amount of crypto to receive
    @param receiver The recipient of crypto after the withdrawal
    """
    lt: LT = staticcall gauge.LP_TOKEN()
    asset: IERC20 = staticcall lt.ASSET_TOKEN()
    lt_tokens: uint256 = extcall gauge.redeem(shares, self, msg.sender)
    return extcall lt.withdraw(lt_tokens, min_assets, receiver)

{
  "outputSelection": {
    "contracts/dao/StakeZap.vy": [
      "evm.bytecode",
      "evm.deployedBytecode",
      "abi"
    ]
  },
  "search_paths": [
    "."
  ]
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"name":"gauge","type":"address"},{"name":"assets","type":"uint256"},{"name":"debt","type":"uint256"},{"name":"min_shares","type":"uint256"}],"name":"deposit_and_stake","outputs":[{"name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"gauge","type":"address"},{"name":"assets","type":"uint256"},{"name":"debt","type":"uint256"},{"name":"min_shares","type":"uint256"},{"name":"receiver","type":"address"}],"name":"deposit_and_stake","outputs":[{"name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"gauge","type":"address"},{"name":"shares","type":"uint256"},{"name":"min_assets","type":"uint256"}],"name":"withdraw_and_unstake","outputs":[{"name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"gauge","type":"address"},{"name":"shares","type":"uint256"},{"name":"min_assets","type":"uint256"},{"name":"receiver","type":"address"}],"name":"withdraw_and_unstake","outputs":[{"name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"}]

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

0x5f3560e01c60026003821660011b6104fd01601e395f51565b63ab1d546681186103c2576084361034176104f957336101405261005c565b6324cbd36c81186103c25760a4361034176104f9576084358060a01c6104f957610140525b6004358060a01c6104f957610120526101205163bfd9041b610180526020610180600461019c845afa610091573d5f5f3e3d5ffd5b3d602081183d602010021880610180016101a0116104f957610180518060a01c6104f9576101c052506101c0905051610160526101605163d70620056101a05260206101a060046101bc845afa6100ea573d5f5f3e3d5ffd5b3d602081183d6020100218806101a0016101c0116104f9576101a0518060a01c6104f9576101e052506101e09050516101805261012051604052610160516060526101805160805261013a6103c6565b610180516323b872dd6101a052336101c052306101e0526024356102005260206101a060646101bc5f855af1610172573d5f5f3e3d5ffd5b3d61018957803b156104f9576001610220526101b3565b3d602081183d6020100218806101a0016101c0116104f9576101a0518060011c6104f95761022052505b610220905051156104f9576101605162aeef8a6101c052606060246101e03760206101c060646101dc5f855af16101ec573d5f5f3e3d5ffd5b60203d106104f9576101c09050516101a052602061012051636e553f656101c0526101a0516101e052610140516102005260206101c060446101dc5f855af1610237573d5f5f3e3d5ffd5b60203d106104f9576101c09050f35b632195919981186103c2576064361034176104f95733606052610288565b6319f6626b81186103c2576084361034176104f9576064358060a01c6104f9576060525b6004358060a01c6104f95760405260405163bfd9041b60a052602060a0600460bc845afa6102b8573d5f5f3e3d5ffd5b3d602081183d60201002188060a00160c0116104f95760a0518060a01c6104f95760e0525060e090505160805260805163d706200560c052602060c0600460dc845afa610307573d5f5f3e3d5ffd5b3d602081183d60201002188060c00160e0116104f95760c0518060a01c6104f957610100525061010090505160a05260405163ba08765260e0526024356101005230610120523361014052602060e0606460fc5f855af161036a573d5f5f3e3d5ffd5b60203d106104f95760e090505160c0526020608051630ad58d2f60e05260c051610100526044356101205260605161014052602060e0606460fc5f855af16103b4573d5f5f3e3d5ffd5b60203d106104f95760e09050f35b5f5ffd5b5f6040516020525f5260405f20546104f75760805163095ea7b360a05260605160c0527fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60e052602060a0604460bc5f855af1610425573d5f5f3e3d5ffd5b3d61043c57803b156104f957600161010052610463565b3d602081183d60201002188060a00160c0116104f95760a0518060011c6104f95761010052505b610100905051156104f95760605163095ea7b360a05260405160c0527fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff60e052602060a0604460bc5f855af16104bb573d5f5f3e3d5ffd5b3d602081183d60201002188060a00160c0116104f95760a0518060011c6104f9576101005250610100505060015f6040516020525f5260405f20555b565b5f80fd0037024600180264