import { memo, useMemo, useEffect, useRef } from 'react'
import { Token } from '../../types/jupiter'
import mangoStore from '@store/mangoStore'
import { IconButton } from '../shared/Button'
import { XMarkIcon } from '@heroicons/react/20/solid'
import { useTranslation } from 'next-i18next'
import Decimal from 'decimal.js'
import { getTokenInMax } from './useTokenMax'
import useMangoAccount from 'hooks/useMangoAccount'
import useJupiterMints from 'hooks/useJupiterMints'
import useMangoGroup from 'hooks/useMangoGroup'
import { PublicKey } from '@solana/web3.js'
import FormatNumericValue from '@components/shared/FormatNumericValue'
import { formatTokenSymbol } from 'utils/tokens'

// const generateSearchTerm = (item: Token, searchValue: string) => {
//   const normalizedSearchValue = searchValue.toLowerCase()
//   const values = `${item.symbol} ${item.name}`.toLowerCase()

//   const isMatchingWithSymbol =
//     item.symbol.toLowerCase().indexOf(normalizedSearchValue) >= 0
//   const matchingSymbolPercent = isMatchingWithSymbol
//     ? normalizedSearchValue.length / item.symbol.length
//     : 0

//   return {
//     token: item,
//     matchingIdx: values.indexOf(normalizedSearchValue),
//     matchingSymbolPercent,
//   }
// }

// const startSearch = (items: Token[], searchValue: string) => {
//   return items
//     .map((item) => generateSearchTerm(item, searchValue))
//     .filter((item) => item.matchingIdx >= 0)
//     .sort((i1, i2) => i1.matchingIdx - i2.matchingIdx)
//     .sort((i1, i2) => i2.matchingSymbolPercent - i1.matchingSymbolPercent)
//     .map((item) => item.token)
// }

const TokenItem = ({
  token,
  onSubmit,
  useMargin,
  type,
}: {
  token: TokenInfoWithAmounts
  onSubmit: (x: string) => void
  useMargin: boolean
  type: 'input' | 'output' | undefined
}) => {
  const { t } = useTranslation('trade')
  const { address, symbol, logoURI, name } = token

  const bank = useMemo(() => {
    const group = mangoStore.getState().group
    if (!group) return
    return group.getFirstBankByMint(new PublicKey(address))
  }, [address])

  const isReduceOnly = useMemo(() => {
    if (!bank) return false
    const borrowsReduceOnly = bank.areBorrowsReduceOnly()
    const depositsReduceOnly = bank.areDepositsReduceOnly()
    return borrowsReduceOnly && depositsReduceOnly
  }, [bank])

  return (
    <div>
      <button
        key={address}
        className={`flex w-full cursor-pointer items-center justify-between rounded-md p-2 font-normal focus:outline-none focus-visible:bg-th-bkg-3 md:hover:bg-th-bkg-2`}
        onClick={() => onSubmit(address)}
      >
        <div className="flex items-center">
          <picture>
            <source srcSet={logoURI} type="image/webp" />
            <img src={logoURI} width="24" height="24" alt={symbol} />
          </picture>
          <div className="ml-2.5">
            <p className="text-left text-th-fgd-2">
              {bank?.name ? formatTokenSymbol(bank.name) : symbol || 'unknown'}
              {isReduceOnly ? (
                <span className="ml-1.5 text-xxs text-th-warning">
                  {t('reduce-only')}
                </span>
              ) : null}
            </p>

            <p className="text-left text-xs text-th-fgd-4">
              {name || 'unknown'}
            </p>
          </div>
        </div>
        {type === 'input' &&
        token.amount &&
        token.amountWithBorrow &&
        token.decimals ? (
          <p className="font-mono text-sm text-th-fgd-2">
            {useMargin ? (
              <FormatNumericValue
                value={token.amountWithBorrow}
                decimals={token.decimals}
              />
            ) : (
              <FormatNumericValue
                value={token.amount}
                decimals={token.decimals}
              />
            )}
          </p>
        ) : null}
      </button>
    </div>
  )
}

// const popularTokenSymbols = ['USDC', 'SOL', 'USDT', 'MNGO', 'BTC']

interface TokenInfoWithAmounts extends Token {
  amount?: Decimal
  amountWithBorrow?: Decimal
}

const SwapFormTokenList = ({
  onClose,
  onTokenSelect,
  type,
  useMargin,
}: {
  onClose: () => void
  onTokenSelect: (x: string) => void
  type: 'input' | 'output' | undefined
  useMargin: boolean
}) => {
  const { t } = useTranslation(['common', 'swap'])
  // const [search, setSearch] = useState('')
  const { mangoTokens } = useJupiterMints()
  const inputBank = mangoStore((s) => s.swap.inputBank)
  const outputBank = mangoStore((s) => s.swap.outputBank)
  const { group } = useMangoGroup()
  const { mangoAccount } = useMangoAccount()
  const focusRef = useRef<HTMLButtonElement>(null)

  // const popularTokens = useMemo(() => {
  //   return tokens.filter((token) => {
  //     return !token?.name || !token?.symbol
  //       ? false
  //       : popularTokenSymbols.includes(token.symbol)
  //   })
  // }, [tokens])

  useEffect(() => {
    function onEscape(e: KeyboardEvent) {
      if (e.keyCode === 27) {
        onClose()
      }
    }
    window.addEventListener('keydown', onEscape)
    return () => window.removeEventListener('keydown', onEscape)
  }, [onClose])

  const tokenInfos: TokenInfoWithAmounts[] = useMemo(() => {
    if (
      mangoTokens?.length &&
      group &&
      mangoAccount &&
      outputBank &&
      inputBank &&
      type === 'input'
    ) {
      const filteredSortedTokens = mangoTokens
        .map((token) => {
          const max = getTokenInMax(
            mangoAccount,
            new PublicKey(token.address),
            outputBank.mint,
            group,
            useMargin
          )
          return { ...token, ...max }
        })
        .filter((token) => (token.symbol === outputBank?.name ? false : true))
        .sort((a, b) =>
          useMargin
            ? Number(b.amountWithBorrow) - Number(a.amountWithBorrow)
            : Number(b.amount) - Number(a.amount)
        )

      return filteredSortedTokens
    } else if (mangoTokens?.length) {
      const filteredTokens = mangoTokens
        .map((token) => ({
          ...token,
          amount: new Decimal(0),
          amountWithBorrow: new Decimal(0),
        }))
        .filter((token) => (token.symbol === inputBank?.name ? false : true))
        .sort((a, b) => a.symbol.localeCompare(b.symbol))
      return filteredTokens
    } else {
      return []
    }
  }, [mangoTokens, inputBank, outputBank, mangoAccount, group, useMargin, type])

  // const handleUpdateSearch = (e: ChangeEvent<HTMLInputElement>) => {
  //   setSearch(e.target.value)
  // }

  // const sortedTokens = search ? startSearch(tokenInfos, search) : tokenInfos
  const sortedTokens = tokenInfos

  useEffect(() => {
    if (focusRef?.current) {
      focusRef.current.focus()
    }
  }, [focusRef])

  return (
    <>
      <p className="mb-3">
        {type === 'input'
          ? t('swap:pay')
          : type === 'output'
          ? t('swap:receive')
          : ''}
      </p>
      <IconButton
        className="absolute top-2 right-2 text-th-fgd-3 hover:text-th-fgd-2"
        onClick={onClose}
        hideBg
        ref={focusRef}
      >
        <XMarkIcon className="h-6 w-6" />
      </IconButton>
      {/* No need for search/popular tokens until we have more tokens */}

      {/* <div className="flex items-center text-th-fgd-4">
        <Input
          type="text"
          placeholder="Search by token or paste address"
          prefix={<MagnifyingGlassIcon className="h-5 w-5" />}
          autoFocus
          value={search}
          onChange={handleUpdateSearch}
        />
      </div>
      {popularTokens.length ? (
        <div className="mt-4 flex flex-wrap">
          {popularTokens.map((token) => {
            let logoURI
            if (mangoTokens.length) {
              logoURI = mangoTokens.find(
                (t) => t.address === token.address
              )!.logoURI
            }
            const disabled =
              (type === 'input' && token.symbol === outputBank?.name) ||
              (type === 'output' && token.symbol === inputBank?.name)
            return (
              <button
                className={`${
                  disabled ? 'opacity-20' : 'hover:border-th-fgd-3'
                } mx-1 mb-2 flex items-center rounded-md border border-th-bkg-4 py-1 px-3 focus:border-th-fgd-2`}
                onClick={() => onTokenSelect(token.address)}
                disabled={disabled}
                key={token.address}
              >
                {logoURI ? (
                  <Image alt="" width="16" height="16" src={logoURI} />
                ) : (
                  <QuestionMarkCircleIcon className="h-5 w-5 text-th-fgd-3" />
                )}
                <span className="ml-1.5 text-th-fgd-1">{token.symbol}</span>
              </button>
            )
          })}
        </div>
      ) : null} */}
      {/* <div className="my-2 border-t border-th-bkg-4"></div> */}
      <div className="mb-2 flex justify-between rounded bg-th-bkg-2 p-2">
        <p className="text-xs text-th-fgd-4">{t('token')}</p>
        {type === 'input' ? (
          <p className="text-xs text-th-fgd-4">{t('max')}</p>
        ) : null}
      </div>
      <div className="overflow-auto pb-2">
        {sortedTokens.map((token) => (
          <TokenItem
            key={token.address}
            token={token}
            onSubmit={onTokenSelect}
            useMargin={useMargin}
            type={type}
          />
        ))}
      </div>
    </>
  )
}

export default memo(SwapFormTokenList)
