36 lines
1.1 KiB
TypeScript
36 lines
1.1 KiB
TypeScript
import { FixedRateExchange, PriceAndFees } from '@oceanprotocol/lib'
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import { consumeMarketFixedSwapFee } from '../../app.config'
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import Web3 from 'web3'
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import { getOceanConfig } from './ocean'
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import { getDummyWeb3 } from './web3'
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/**
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* This is used to calculate the price to buy one datatoken from a fixed rate exchange. You need to pass either a web3 object or a chainId. If you pass a chainId a dummy web3 object will be created
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* @param {AccessDetails} accessDetails
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* @param {number} chainId
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* @param {Web3?} web3
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* @return {Promise<PriceAndFees>}
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*/
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export async function getFixedBuyPrice(
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accessDetails: AccessDetails,
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chainId?: number,
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web3?: Web3
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): Promise<PriceAndFees> {
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if (!web3 && !chainId)
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throw new Error("web3 and chainId can't be undefined at the same time!")
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if (!web3) {
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web3 = await getDummyWeb3(chainId)
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}
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const config = getOceanConfig(chainId)
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const fixed = new FixedRateExchange(web3, config.fixedRateExchangeAddress)
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const estimatedPrice = await fixed.calcBaseInGivenOutDT(
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accessDetails.addressOrId,
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'1',
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consumeMarketFixedSwapFee
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)
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return estimatedPrice
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}
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