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token.ts
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token.ts
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import cloneDeep from 'lodash.clonedeep'
import {
GenericToken,
GenericTokenSource,
LooseGenericToken,
PfmMemo,
SortFn,
TokenCardInfo,
} from '@dao-dao/types'
import { getChainForChainName, getIbcTransferInfoFromChannel } from './chain'
import { objectMatchesStructure } from './objectMatchesStructure'
export const tokensEqual = (
a: LooseGenericToken,
b: LooseGenericToken
): boolean =>
a.chainId === b.chainId &&
a.type === b.type &&
a.denomOrAddress === b.denomOrAddress
export const serializeTokenSource = (
tokenOrSource: GenericToken | GenericTokenSource
): string => {
const source =
'source' in tokenOrSource ? tokenOrSource.source : tokenOrSource
return [source.chainId, source.type, source.denomOrAddress].join(':')
}
export const deserializeTokenSource = (source: string): GenericTokenSource => {
const [chainId, type, denomOrAddress] = source.split(':')
return {
chainId,
type: type as GenericTokenSource['type'],
denomOrAddress,
}
}
/**
* Validate if a string or object is a valid packet-forward-middleware memo.
*/
export const isValidPfmMemo = (
memo: string | Record<string, unknown>
): boolean => {
try {
const memoObj: PfmMemo = typeof memo === 'string' ? JSON.parse(memo) : memo
return (
objectMatchesStructure(memoObj, {
forward: {
receiver: {},
port: {},
channel: {},
},
}) &&
// Validate next if present.
(!memoObj.forward.next || isValidPfmMemo(memoObj.forward.next!))
)
} catch {
return false
}
}
/**
* Parse a valid packet-forward-middleware memo and return a typed object or
* undefined if invalid.
*/
export const parseValidPfmMemo = (
memo: string | Record<string, unknown>
): PfmMemo | undefined => {
if (!isValidPfmMemo(memo)) {
return
}
const memoObj: PfmMemo =
typeof memo === 'string' ? JSON.parse(memo) : cloneDeep(memo)
if (memoObj.forward.next) {
memoObj.forward.next = parseValidPfmMemo(memoObj.forward.next)
}
return memoObj
}
/**
* Get the sequence of chains in a packet-forward-middleware memo.
*/
export const getPfmChainPathFromMemo = (
sourceChainId: string,
sourceChannelId: string,
memo?: PfmMemo
): string[] => {
const memoObj = memo && parseValidPfmMemo(memo)
const {
destinationChain: { chain_name },
} = getIbcTransferInfoFromChannel(sourceChainId, sourceChannelId)
const toChainId = getChainForChainName(chain_name).chain_id
return [
sourceChainId,
...(memoObj
? getPfmChainPathFromMemo(
toChainId,
memoObj.forward.channel,
memoObj.forward.next
)
: [toChainId]),
]
}
/**
* Get the last receiver in a packet-forward-middleware memo.
*/
export const getPfmFinalReceiverFromMemo = (memo: PfmMemo): string =>
memo.forward.next
? getPfmFinalReceiverFromMemo(memo.forward.next)
: memo.forward.receiver
/**
* Function to sort token lists descending by USD value.
*/
export const sortTokensValueDescending: SortFn<
Pick<TokenCardInfo, 'token' | 'unstakedBalance' | 'lazyInfo'>
> = (a, b) => {
// If loading or no price, show at bottom.
const aPrice =
a.lazyInfo.loading || !a.lazyInfo.data.usdUnitPrice?.usdPrice
? undefined
: a.lazyInfo.data.totalBalance * a.lazyInfo.data.usdUnitPrice.usdPrice
const bPrice =
b.lazyInfo.loading || !b.lazyInfo.data.usdUnitPrice?.usdPrice
? undefined
: b.lazyInfo.data.totalBalance * b.lazyInfo.data.usdUnitPrice.usdPrice
// If prices are equal, sort alphabetically by symbol.
return aPrice === bPrice
? a.token.symbol
.toLocaleLowerCase()
.localeCompare(b.token.symbol.toLocaleLowerCase())
: aPrice === undefined
? 1
: bPrice === undefined
? -1
: bPrice - aPrice
}