import { Currency, Native, Token, WNATIVE } from '@plexswap/sdk-core'
import { ChainId  } from '@plexswap/chains'
import { TokenAddressMap } from '@plexswap/metalists'
import { enumValues } from '@plexswap/utils/enumValues'

const createEmptyList = () => {
  const list = {} as Record<ChainId, TokenAddressMap<ChainId>[ChainId]>
  for (const chainId of enumValues(ChainId)) {
    list[chainId] = {}
  }
  return list as TokenAddressMap<ChainId>
}

/**
 * An empty result, useful as a default.
 */
export const EMPTY_LIST: TokenAddressMap<ChainId> = createEmptyList()

export function serializeTokens(unserializedTokens: any) {
  const serializedTokens = Object.keys(unserializedTokens).reduce((accum, key) => {
    return { ...accum, [key]: unserializedTokens[key].serialize }
  }, {} as any)

  return serializedTokens
}

export function unwrappedToken(token?: Token): Currency | undefined {
  if (token && token.equals(WNATIVE[token.chainId as keyof typeof WNATIVE])) return Native.onChain(token.chainId)
  return token
}