30 lines
959 B
TypeScript
30 lines
959 B
TypeScript
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import useMangoStore from '../stores/useMangoStore'
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import { PublicKey } from '@solana/web3.js'
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import { ACCOUNT_LAYOUT, nativeToUi } from '@blockworks-foundation/mango-client'
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import { SRM_DECIMALS } from '@project-serum/serum/lib/token-instructions'
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import { getFeeTier, getFeeRates } from '@project-serum/serum'
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function parseTokenAccountData(
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data: Buffer
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): { mint: PublicKey; owner: PublicKey; amount: number } {
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const { mint, owner, amount } = ACCOUNT_LAYOUT.decode(data)
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return {
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mint: new PublicKey(mint),
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owner: new PublicKey(owner),
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amount,
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}
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}
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const useSrmAccount = () => {
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const srmAccount = useMangoStore((s) => s.selectedMangoGroup.srmAccount)
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const accountData = parseTokenAccountData(srmAccount.data)
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const totalSrm = nativeToUi(accountData.amount, SRM_DECIMALS)
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const feeTier = getFeeTier(0, totalSrm)
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const rates = getFeeRates(feeTier)
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return { totalSrm, feeTier, rates }
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}
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export default useSrmAccount
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