Astroport Withdrawer library

The Valence Astroport Withdrawer library library allows to withdraw liquidity from an Astroport Liquidity Pool from an input account an deposit the withdrawed tokens into an output account.

High-level flow

---
title: Astroport Liquidity Withdrawal
---
graph LR
  IA((Input
      Account))
  OA((Output
		  Account))
  P[Processor]
  S[Astroport
      Liquidity
      Withdrawal]
  AP[Astroport
     Pool]
  P -- 1/Withdraw Liquidity --> S
  S -- 2/Query balances --> IA
  S -- 3/Compute amounts --> S
  S -- 4/Do Withdraw Liquidity --> IA
  IA -- 5/Withdraw Liquidity
				  [LP Tokens] --> AP
  AP -- 5'/Transfer assets --> OA

Functions

Configuration

The library is configured on instantiation via the LibraryConfig type.

#![allow(unused)]
fn main() {
pub struct LibraryConfig {
    // Account holding the LP position
    pub input_addr: LibraryAccountType,
    // Account to which the withdrawn assets are forwarded
    pub output_addr: LibraryAccountType,
    // Pool address
    pub pool_addr: String,
    // Liquidity withdrawer configuration
    pub withdrawer_config: LiquidityWithdrawerConfig,
}

pub struct LiquidityWithdrawerConfig {
    // Pool type, old Astroport pools use Cw20 lp tokens and new pools use native tokens, so we specify here what kind of token we are will use.
    // We also provide the PairType structure of the right Astroport version that we are going to use for each scenario
    pub pool_type: PoolType,
}

pub enum PoolType {
    NativeLpToken,
    Cw20LpToken,
}
}