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refactor: Create a new PoolContext for holding Pool related data.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| import { type PropsWithChildren, createContext, useCallback, useContext, useEffect, useState } from 'react'; | ||
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| import { contractClient as loanManagerClient } from '@contracts/loan_manager'; | ||
| import type { SupportedCurrency } from 'currencies'; | ||
| import { CURRENCY_BINDINGS } from 'src/currency-bindings'; | ||
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| export type PriceRecord = { | ||
| [K in SupportedCurrency]: bigint; | ||
| }; | ||
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| export type PoolState = { | ||
| totalBalance: bigint; | ||
| availableBalance: bigint; | ||
| apr: bigint; | ||
| }; | ||
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| export type PoolRecord = { | ||
| [K in SupportedCurrency]: PoolState; | ||
| }; | ||
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| export type PoolContext = { | ||
| prices: PriceRecord | null; | ||
| pools: PoolRecord | null; | ||
| refetchPools: () => void; | ||
| }; | ||
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| const Context = createContext<PoolContext>({ | ||
| prices: null, | ||
| pools: null, | ||
| refetchPools: () => {}, | ||
| }); | ||
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| const fetchAllPrices = async (): Promise<PriceRecord> => { | ||
| const [XLM, wBTC, wETH, USDC, EURC] = await Promise.all([ | ||
| fetchPriceData('XLM'), | ||
| fetchPriceData('BTC'), | ||
| fetchPriceData('ETH'), | ||
| fetchPriceData('USDC'), | ||
| fetchPriceData('EURC'), | ||
| ]); | ||
| return { XLM, wBTC, wETH, USDC, EURC }; | ||
| }; | ||
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| const fetchPriceData = async (ticker: string): Promise<bigint> => { | ||
| try { | ||
| const { result } = await loanManagerClient.get_price({ token: ticker }); | ||
| return result; | ||
| } catch (error) { | ||
| console.error(`Error fetching price data: for ${ticker}`, error); | ||
| return 0n; | ||
| } | ||
| }; | ||
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| const fetchPoolState = async (ticker: SupportedCurrency): Promise<PoolState> => { | ||
| const { contractClient } = CURRENCY_BINDINGS[ticker]; | ||
| const { result: totalBalance } = await contractClient.get_contract_balance(); | ||
| const { result: availableBalance } = await contractClient.get_available_balance(); | ||
| const { result: apr } = await contractClient.get_interest(); | ||
| return { totalBalance, availableBalance, apr }; | ||
| }; | ||
|
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| const fetchPools = async (): Promise<PoolRecord> => { | ||
| const [XLM, wBTC, wETH, USDC, EURC] = await Promise.all([ | ||
| fetchPoolState('XLM'), | ||
| fetchPoolState('wBTC'), | ||
| fetchPoolState('wETH'), | ||
| fetchPoolState('USDC'), | ||
| fetchPoolState('EURC'), | ||
| ]); | ||
| return { XLM, wBTC, wETH, USDC, EURC }; | ||
| }; | ||
|
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| export const PoolProvider = ({ children }: PropsWithChildren) => { | ||
| const [prices, setPrices] = useState<PriceRecord | null>(null); | ||
| const [pools, setPools] = useState<PoolRecord | null>(null); | ||
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| const refetchPools = useCallback(() => { | ||
| fetchAllPrices() | ||
| .then((res) => setPrices(res)) | ||
| .catch((err) => console.error('Error fetching prices', err)); | ||
| fetchPools() | ||
| .then((res) => setPools(res)) | ||
| .catch((err) => console.error('Error fetching pools', err)); | ||
| }, []); | ||
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| useEffect(() => { | ||
| refetchPools(); | ||
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| // Set up a timer for every ledger (~6 secs) to refetch state. | ||
| const intervalId = setInterval(refetchPools, 6000); | ||
| return () => clearInterval(intervalId); | ||
| }, [refetchPools]); | ||
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| return <Context.Provider value={{ prices, pools, refetchPools }}>{children}</Context.Provider>; | ||
| }; | ||
|
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| export const usePools = (): PoolContext => useContext(Context); |
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