Aave and Compound support for recipe + Testing out Balancer support

[MickdeGraaf]

User Story

• As an <audience/user>: User
• I want to <action/task>: Mint Pies with yield bearing tokens in them directly from ETH in a single transaction
• so that <outcome/goal/benefit>: Can enjoy my Pie without having to source the underlying assets myself

Type

• Enhancement
• Maintenance
• Refactor

Description

The current recipe only supports buying assets from Uniswap and Balancer. Interest bearing tokens are listed on those protocols but they will cost more compared to just buying the underlying and wrapping it.

Solution

When buying one of the underlying of the pie the recipe needs to execute the following logic when swapping WETH to a Token

• Check if token is lending token in Aave or Compound
• If not swap regularly
• If it is calculate the amount of underlying needed to buy to mint the a/cToken and buy it and wrap it

Additionally there need to be setters to map lending tokens to their underlying and protocol.

Definition of Done

New recipe is able to mint a/cTokens without any changes compared to the current interface.

Minting pies and calcToPie() work as expected.

New recipe should inherit from:

https://github.com/pie-dao/pie-oven/blob/recipe/contracts/recipes/recipes/UniswapV2BalRecipe.sol

[Evert0x]

Thanks, please let me know if this suffices.

https://github.com/pie-dao/pie-oven/blob/recipe/contracts/recipes/recipes/InterestingRecipe.sol

I don't see any tests for the recipes. Is that right?