import React, { useState } from 'react'
import BigNumber from 'bignumber.js'

import Button from '../Button'
import { formatCurrency } from 'utils/formatters'
import useCreditManagerStore from 'stores/useCreditManagerStore'
import useWalletStore from 'stores/useWalletStore'
import useCreditAccountPositions from 'hooks/useCreditAccountPositions'
import { getTokenDecimals, getTokenSymbol } from 'utils/tokens'
import FundAccount from './FundAccount'
import useTokenPrices from 'hooks/useTokenPrices'
import useAccountStats from 'hooks/useAccountStats'
import useMarkets from 'hooks/useMarkets'
import ContainerSecondary from 'components/ContainerSecondary'

const CreditManager = () => {
  const [isFund, setIsFund] = useState(false)

  const address = useWalletStore((s) => s.address)
  const selectedAccount = useCreditManagerStore((s) => s.selectedAccount)

  const { data: positionsData, isLoading: isLoadingPositions } = useCreditAccountPositions(
    selectedAccount ?? ''
  )

  const { data: tokenPrices } = useTokenPrices()
  const { data: marketsData } = useMarkets()
  const accountStats = useAccountStats()

  const getTokenTotalUSDValue = (amount: string, denom: string) => {
    // early return if prices are not fetched yet
    if (!tokenPrices) return 0

    return (
      BigNumber(amount)
        .div(10 ** getTokenDecimals(denom))
        .toNumber() * tokenPrices[denom]
    )
  }

  if (!address) {
    return (
      <div className="absolute inset-0 left-auto w-[400px] border-l border-white/20 bg-background-2 p-2">
        <ContainerSecondary>You must have a connected wallet</ContainerSecondary>
      </div>
    )
  }

  return (
    <div className="absolute inset-0 left-auto w-[400px] border-l border-white/20 bg-background-2 p-2">
      <ContainerSecondary className="mb-2">
        {isFund ? (
          <div className="flex items-center justify-between">
            <h3 className="font-bold">Fund Account</h3>
            <Button className="rounded-md" onClick={() => setIsFund(false)}>
              Cancel
            </Button>
          </div>
        ) : (
          <div className="flex gap-3">
            <Button className="flex-1 rounded-md" onClick={() => setIsFund(true)}>
              Fund
            </Button>
            <Button className="flex-1 rounded-md" onClick={() => alert('TODO')}>
              Withdraw
            </Button>
          </div>
        )}
      </ContainerSecondary>
      {isFund ? (
        <FundAccount />
      ) : (
        <>
          <ContainerSecondary className="mb-2 text-sm">
            <div className="mb-1 flex justify-between">
              <div>Total Position:</div>
              <div className="font-semibold">
                {formatCurrency(accountStats?.totalPosition ?? 0)}
              </div>
            </div>
            <div className="flex justify-between">
              <div>Total Liabilities:</div>
              <div className="font-semibold">{formatCurrency(accountStats?.totalDebt ?? 0)}</div>
            </div>
          </ContainerSecondary>
          <ContainerSecondary>
            <h4 className="font-bold">Balances</h4>
            {isLoadingPositions ? (
              <div>Loading...</div>
            ) : (
              <>
                <div className="flex text-xs font-semibold">
                  <div className="flex-1">Asset</div>
                  <div className="flex-1">Value</div>
                  <div className="flex-1">Size</div>
                  <div className="flex-1">APY</div>
                </div>
                {positionsData?.coins.map((coin) => (
                  <div key={coin.denom} className="flex text-xs text-black/40">
                    <div className="flex-1">{getTokenSymbol(coin.denom)}</div>
                    <div className="flex-1">
                      {formatCurrency(getTokenTotalUSDValue(coin.amount, coin.denom))}
                    </div>
                    <div className="flex-1">
                      {BigNumber(coin.amount)
                        .div(10 ** getTokenDecimals(coin.denom))
                        .toNumber()
                        .toLocaleString(undefined, {
                          maximumFractionDigits: getTokenDecimals(coin.denom),
                        })}
                    </div>
                    <div className="flex-1">-</div>
                  </div>
                ))}
                {positionsData?.debts.map((coin) => (
                  <div key={coin.denom} className="flex text-xs text-red-500">
                    <div className="flex-1 text-black/40">{getTokenSymbol(coin.denom)}</div>
                    <div className="flex-1">
                      -{formatCurrency(getTokenTotalUSDValue(coin.amount, coin.denom))}
                    </div>
                    <div className="flex-1">
                      -
                      {BigNumber(coin.amount)
                        .div(10 ** getTokenDecimals(coin.denom))
                        .toNumber()
                        .toLocaleString(undefined, {
                          maximumFractionDigits: 6,
                        })}
                    </div>
                    <div className="flex-1">
                      -{(Number(marketsData?.[coin.denom].borrow_rate) * 100).toFixed(1)}%
                    </div>
                  </div>
                ))}
              </>
            )}
          </ContainerSecondary>
        </>
      )}
    </div>
  )
}

export default CreditManager