ExchangeHelper

Helper contract to buy/sell G$ at GoodReserve with any token supported by Uniswap V2. Since reserve only supports cDAI.

Events
TokenPurchased
Emitted when G$ tokens are purchased.
Parameter name
Annotation
caller
The address who initiated the action.
inputToken
The convertible token address which the G$ tokens were purchased with.
inputAmount
Reserve tokens amount.
actualReturn
Actual return after the conversion.
receiverAddress
Address of the receiver of the tokens.
event TokenPurchased(
    address indexed caller,
    address indexed inputToken,
    uint256 inputAmount,
    uint256 actualReturn,
    address indexed receiverAddress
);
TokenSold
Emitted when G$ tokens are sold.
Parameter name
Annotation
caller
The address who initiated the action.
outputToken
The convertible token address which the G$ tokens were sold to.
gdAmount
The G$ tokens amount.
contributionAmount
The amount of G$ tokens that was contributed during the conversion.
actualReturn
Actual return after the conversion.
receiverAddress
Address of the receiver of tokens.
event TokenSold(
    address indexed caller,
    address indexed outputToken,
    uint256 gdAmount,
    uint256 contributionAmount,
    uint256 actualReturn,
    address indexed receiverAddress
);
buy
The function converts any "buyWith" tokens to DAI. Then call to reserve's buy function is occured. It is to convert the tokens to G$ tokens.
Parameter name
Annotation
_buyPath
The tokens swap path in order to buy G$ if initial token is not DAI or cDAI. The end of the path must be set to DAI.
_tokenAmount
The amount of "buyWith" tokens that should be converted to G$ tokens.
_minReturn
The minimum allowed return in G$ tokens.
_minDAIAmount
The minimum DAI out amount from Exchange swap function.
_targetAddress
The address of G$ and GDX recipient if different than msg.sender.
Returns: how much G$ tokens were transferred.
function buy(
    address[] memory _buyPath,
    uint256 _tokenAmount,
    uint256 _minReturn,
    uint256 _minDAIAmount,
    address _targetAddress
) public payable returns (uint256);
sell
The function converts G$ tokens to cDAI through reserve then it makes further transactions according to desired _sellTo token. The user could either send cDAI or DAI directly or desired token through Uniswap V2.
Parameter name
Annotation
_sellPath
The tokens swap path in order to sell G$ to target token. If target token is not DAI or cDAI then first element of the path must be DAI.
_gdAmount
The amount of G$ tokens that should be converted to "_sellTo" tokens.
_minReturn
The minimum allowed "sellTo" tokens return.
_minTokenReturn
The mininmum DAI out amount from Exchange swap function.
_targetAddress
The address of "_sellTo" token recipient if different than msg.sender.
Returns: how much "sellTo" tokens were transferred.
function sell(
    address[] memory _sellPath,
    uint256 _gdAmount,
    uint256 _minReturn,
    uint256 _minTokenReturn,
    address _targetAddress
) public returns (uint256);

Parameter name	Annotation
caller	The address who initiated the action.
inputToken	The convertible token address which the G$ tokens were purchased with.
inputAmount	Reserve tokens amount.
actualReturn	Actual return after the conversion.
receiverAddress	Address of the receiver of the tokens.

Parameter name	Annotation
caller	The address who initiated the action.
outputToken	The convertible token address which the G$ tokens were sold to.
gdAmount	The G$ tokens amount.
contributionAmount	The amount of G$ tokens that was contributed during the conversion.
actualReturn	Actual return after the conversion.
receiverAddress	Address of the receiver of tokens.

Parameter name	Annotation
_buyPath	The tokens swap path in order to buy G$ if initial token is not DAI or cDAI. The end of the path must be set to DAI.
_tokenAmount	The amount of "buyWith" tokens that should be converted to G$ tokens.
_minReturn	The minimum allowed return in G$ tokens.
_minDAIAmount	The minimum DAI out amount from Exchange swap function.
_targetAddress	The address of G$ and GDX recipient if different than `msg.sender`.

Parameter name	Annotation
_sellPath	The tokens swap path in order to sell G$ to target token. If target token is not DAI or cDAI then first element of the path must be DAI.
_gdAmount	The amount of G$ tokens that should be converted to "_sellTo" tokens.
_minReturn	The minimum allowed "sellTo" tokens return.
_minTokenReturn	The mininmum DAI out amount from Exchange swap function.
_targetAddress	The address of "_sellTo" token recipient if different than `msg.sender`.

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Last modified 1yr ago