Tapioca Bar🍹 & Mixologist 🤙

The gist of it

BeachBar : Serves as a vault to store assets/collaterals, strategies can later be used on those vaults to yield farm.

deposit(uint256 assetId, address from, address to, uint256 amount, uint256 share) Used to deposit, it’s the first step to enter a market.
withdraw(uint256 assetId, address from, address to, uint256 amount, uint256 share, bool withdrawNative) Used to withdraw asset from BeachBar , if the asset if the wrapped native, the last parameter is to decide to unwrap or not the asset.
setApprovalForAll(address operator, bool approved) Used to allow a Mixologist market to use the user’s BeachBar assets.
toShare(uint256 assetId, uint256 amount, roundUp) Convert from an asset amount to a BeachBar share.
toAmount(uint256 assetId, uint256 share, roundUp) Convert from a Beachbar share to an asset amount.
amountOf(address user, uint256 assetId) The amount in underlying token that a user has stored in.
balanceOf(address user, uint256 assetId) The amount of shares a user has.

Mixologist : Users can deposit / withdraw from Beachbar to Mixologist to enter / exit markets.

addCollateral(address to, bool skim, uint256 share) Users can add collateral from the Beachbar deposit to the Mixologist market.
removeCollateral(address to, uint256 share) Users can remove collateral and exit their position, if they are solvent.
addAsset(address to, bool skim, uint256 share) Users can lend Beachbar deposited asset with it.
removeAsset(address to, uint256 fraction) Users can exist lending position with this.
borrow(address to, uint256 amount) Users can borrow the lent asset of the market, they need to addCollateral first.
repay(address to, bool skim, uint256 part) Users can repay their positions with it. Since we’ll have self-repaying loans technically it’s not gonna be used but it’s good to have it.
mix(uint8[] calldata actions, uint256[] calldata values, bytes[] calldata datas) Used to make multiple actions in one Tx.
balanceOf(address user) The balance in fraction unit of a user, we can use MixologistHelper to compute the real asset amount.

MixologistHelper : A helper contract for Mixologist .

getCollateralSharesForBorrowPart(Mixologist mixologist, uint256 borrowPart) Used to compute the amount of shares needed for an amount of asset to be borrowed.
getAmountForAssetFraction(Mixologist mixologist, uint256 fraction) Used to compute the amount of assets based on a fraction. Can be used to get asset amounts from Mixologist.balanceOf.