➰CurveDeposit

Description

Action that deposits tokens into liquidity pool via depositTarget receiving lpToken.

User needs to approve every token in tokens which has a nonzero deposit amount specified in amounts.

If one of the tokens == 0xEeee... the user needs to have an appropriate balance of WETH that will be used instead of native ETH. User needs to approve the its wallet to pull WETH.

Action ID

0xeae20b37

SDK Action

const curveDepositAction = new dfs.actions.curve.CurveDepositAction(
    sender,
    receiver,
    poolAddr,
    minMintAmount,
    useUnderlying,
    amounts
);

Action Type

STANDARD_ACTION

Input Parameters

    /// @param from Address where to pull tokens from
    /// @param to Address that will receive the LP tokens
    /// @param depositTargetOrPool Address of the pool contract or zap deposit contract in which to deposit
    /// @param minMintAmount Minimum amount of LP tokens to accept
    /// @param flags Flags for the deposit
    /// @param amounts Amount of each token to deposit
    struct Params {
        address from;
        address to;
        address depositTargetOrPool;
        uint256 minMintAmount;
        uint8 flags;
        uint256[] amounts;
    }

Flags parameter:

This parameter is the same for both deposit and withdraw actions.

It holds two flags: explicitUnderlying (1 << 2 bitmask), withdrawExact(1 << 3 bitmask), as well as depositTargetType enum which takes up the lower 2 bits.

• bool explicitUnderlying - used when the curve pool doesn't have a dedicated deposit zap but has underlying tokens that we want to deposit or withdraw.

• bool withdrawExact - explained here but relevant only for CurveWithdraw: if true - burnAmount specifies the MAXIMUM amount of lp tokens to burn, amounts specifies the EXACT amount of tokens to withdraw; if false - burnAmount specifies EXACT amount of lp tokens to burn, amounts specifies the MINIMUM amount of withdrawn tokens to accept;

• uint2 depositTargetType: SWAP (=0) - target is pool swap contract ZAP_POOL - target is zap with the pool address view function signature pool() ZAP_CURVE - target is zap with the pool address view function signature curve()

Return Value

return bytes32(received);

Events and Logs

emit ActionEvent("CurveDeposit", logData);
logger.logActionDirectEvent("CurveDeposit", logData);
bytes memory logData = abi.encode(params);