35 lines
974 B
TypeScript
35 lines
974 B
TypeScript
import { useMemo } from 'react'
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import useMangoGroup from './useMangoGroup'
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import { floorToDecimal } from 'utils/numbers'
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export default function useLeverageMax(selectedToken: string) {
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const { group } = useMangoGroup()
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const stakeBank = useMemo(() => {
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return group?.banksMapByName.get(selectedToken)?.[0]
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}, [selectedToken, group])
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const borrowBank = useMemo(() => {
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return group?.banksMapByName.get('USDC')?.[0]
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}, [group])
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const leverageMax = useMemo(() => {
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if (!stakeBank || !borrowBank) return 0
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const borrowInitLiabWeight = borrowBank.initLiabWeight
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const stakeInitAssetWeight = stakeBank.initAssetWeight
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if (!borrowInitLiabWeight || !stakeInitAssetWeight) return 1
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const x = stakeInitAssetWeight.toNumber() / borrowInitLiabWeight.toNumber()
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const leverageFactor = 1 / (1 - x)
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const max = floorToDecimal(leverageFactor, 1).toNumber()
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return max
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}, [stakeBank, borrowBank])
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return leverageMax
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}
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