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BasketDAO Migrator App

Setup

Install Brownie as per the docs.

For testing ensure the testing utils are installed:

$ pipx inject eth-brownie brownie-token-tester ape-safe

If using Pylance with VSCode, you should point the interpreter to the pipx installation

Ctrl/Cmd + Shift + P -> "Select interpreter" -> ~/.local/pipx/venvs/eth-brownie/bin/python

Setup your .env file with:

WEB3_INFURA_PROJECT_ID=API_KEY_GOES_HERE

Lifecycle

The deposit works in 3 phases: - 0: accepting deposits (open) - 1: no more deposits accepted (baking) - 2: users can withdraw (done)

The application has an initial state variable of 0 (the default uint8 value).

The msg.sender must be the gov address to change the state.

State 1 can be entered by calling closeEntry(). - You must be in state=0 to call this function State 2 can be entered by calling settle(true). - You must be in state=1 to call this function

You cannot rewind state.

To see an example of the full lifecylce, take a look at tests/e2e/test_e2e.py

Actions

In state == 0, users can send their BDI to the contract, the governance contract can call closeEntry() to end this phase.

In state 1, the governor can call 4 contract calls:

  1. burnAndUnwrap converts BDI tokens to their underlying assets
  2. execSwaps swaps the underlying BDI assets for WETH, using the multisig.
  3. bake converts WETH to DEFI++
  4. settle computes the exchange rate between BDI deposited and DEFI++ to be redeemed, for the holders. Call settle(true) to end the baking phase and move to phase 2.

(The script to execute the execSwaps action is exec_swaps_given_in.py)

Finally, in state 2, BDI token holders can call exit to redeem for DEFI++ at the given rate.

Questions:

  • What is the purpose of the deadline in external functions?
  • The bake script needs AMOUNT_OUT to be set