47 lines
1.4 KiB
TypeScript
47 lines
1.4 KiB
TypeScript
import { I80F48, PerpMarket } from '@blockworks-foundation/mango-v4'
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import { useMemo } from 'react'
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import useMangoGroup from './useMangoGroup'
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import useSelectedMarket from './useSelectedMarket'
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const useStablePrice = () => {
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const { selectedMarket } = useSelectedMarket()
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const { group } = useMangoGroup()
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const banks = useMemo(() => {
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if (!group) return []
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return Array.from(group.banksMapByMint)
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.map(([_mintAddress, banks]) => banks)
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.map((b) => b[0])
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}, [group])
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const stablePrice = useMemo(() => {
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if (!group || !selectedMarket || !banks.length) return 0
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let stablePrice
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if (selectedMarket instanceof PerpMarket) {
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stablePrice = selectedMarket.stablePriceModel.stablePrice || 0
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} else {
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const baseBank = banks.find(
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(b) => b.tokenIndex === selectedMarket.baseTokenIndex,
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)
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const quoteBank = banks.find(
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(b) => b.tokenIndex === selectedMarket.quoteTokenIndex,
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)
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const baseStablePrice = group.toUiPrice(
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I80F48.fromNumber(baseBank!.stablePriceModel.stablePrice),
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baseBank!.mintDecimals,
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)
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const quoteStablePrice = group.toUiPrice(
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I80F48.fromNumber(quoteBank!.stablePriceModel.stablePrice),
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quoteBank!.mintDecimals,
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)
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stablePrice = baseStablePrice / quoteStablePrice
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}
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return stablePrice
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}, [banks, group, selectedMarket])
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return stablePrice
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}
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export default useStablePrice
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