mango-v4-ui/components/trade/PerpPositions.tsx

import { PerpMarket, PerpPosition } from '@blockworks-foundation/mango-v4'
import Button, { LinkButton } from '@components/shared/Button'
import ConnectEmptyState from '@components/shared/ConnectEmptyState'
import FormatNumericValue from '@components/shared/FormatNumericValue'
import { Table, Td, Th, TrBody, TrHead } from '@components/shared/TableElements'
import { NoSymbolIcon } from '@heroicons/react/20/solid'
import { useWallet } from '@solana/wallet-adapter-react'
import mangoStore from '@store/mangoStore'
import useMangoAccount from 'hooks/useMangoAccount'
import useMangoGroup from 'hooks/useMangoGroup'
import useSelectedMarket from 'hooks/useSelectedMarket'
import { useTranslation } from 'next-i18next'
import { useCallback, useState } from 'react'
import { floorToDecimal, getDecimalCount } from 'utils/numbers'
import { calculateLimitPriceForMarketOrder } from 'utils/tradeForm'
import MarketCloseModal from './MarketCloseModal'
import PerpSideBadge from './PerpSideBadge'
import TableMarketName from './TableMarketName'

const PerpPositions = () => {
  const { t } = useTranslation(['common', 'trade'])
  const { group } = useMangoGroup()
  const [showMarketCloseModal, setShowMarketCloseModal] = useState(false)
  const [positionToClose, setPositionToClose] = useState<PerpPosition | null>(
    null
  )
  const perpPositions = mangoStore((s) => s.mangoAccount.perpPositions)
  const { selectedMarket } = useSelectedMarket()
  const { connected } = useWallet()
  const { mangoAccountAddress } = useMangoAccount()

  const handlePositionClick = (positionSize: number, market: PerpMarket) => {
    const tradeForm = mangoStore.getState().tradeForm
    const set = mangoStore.getState().set

    let price = Number(tradeForm.price)
    if (tradeForm.tradeType === 'Market') {
      const orderbook = mangoStore.getState().selectedMarket.orderbook
      price = calculateLimitPriceForMarketOrder(
        orderbook,
        positionSize,
        tradeForm.side
      )
    }
    const newSide = positionSize > 0 ? 'sell' : 'buy'
    const quoteSize = floorToDecimal(
      positionSize * price,
      getDecimalCount(market.tickSize)
    )

    set((s) => {
      s.tradeForm.side = newSide
      s.tradeForm.baseSize = positionSize.toString()
      s.tradeForm.quoteSize = quoteSize.toString()
    })
  }

  const showClosePositionModal = useCallback((position: PerpPosition) => {
    setShowMarketCloseModal(true)
    setPositionToClose(position)
  }, [])

  const hideClosePositionModal = useCallback(() => {
    setShowMarketCloseModal(false)
    setPositionToClose(null)
  }, [])

  if (!group) return null

  const openPerpPositions = Object.values(perpPositions).filter((p) =>
    p.basePositionLots.toNumber()
  )

  return mangoAccountAddress && openPerpPositions.length ? (
    <>
      <div className="thin-scroll overflow-x-auto">
        <Table>
          <thead>
            <TrHead>
              <Th className="text-left">{t('market')}</Th>
              <Th className="text-right">{t('trade:side')}</Th>
              <Th className="text-right">{t('trade:size')}</Th>
              <Th className="text-right">{t('trade:notional')}</Th>
              <Th className="text-right">{t('trade:entry-price')}</Th>
              <Th className="text-right">{`${t('trade:unsettled')} ${t(
                'pnl'
              )}`}</Th>
              <Th className="text-right">{t('pnl')}</Th>
              <Th />
            </TrHead>
          </thead>
          <tbody>
            {openPerpPositions.map((position) => {
              const market = group.getPerpMarketByMarketIndex(
                position.marketIndex
              )
              const basePosition = position.getBasePositionUi(market)
              const floorBasePosition = floorToDecimal(
                basePosition,
                getDecimalCount(market.minOrderSize)
              ).toNumber()
              const isSelectedMarket =
                selectedMarket instanceof PerpMarket &&
                selectedMarket.perpMarketIndex === position.marketIndex

              if (!basePosition) return null

              const unsettledPnl = position.getUnsettledPnlUi(market)
              const cummulativePnl =
                position.cumulativePnlOverPositionLifetimeUi(market)

              return (
                <TrBody key={`${position.marketIndex}`} className="my-1 p-2">
                  <Td>
                    <TableMarketName market={market} />
                  </Td>
                  <Td className="text-right">
                    <PerpSideBadge basePosition={basePosition} />
                  </Td>
                  <Td className="text-right font-mono">
                    <p className="flex justify-end">
                      {isSelectedMarket ? (
                        <LinkButton
                          onClick={() =>
                            handlePositionClick(floorBasePosition, market)
                          }
                        >
                          <FormatNumericValue
                            value={Math.abs(basePosition)}
                            decimals={getDecimalCount(market.minOrderSize)}
                          />
                        </LinkButton>
                      ) : (
                        <FormatNumericValue
                          value={Math.abs(basePosition)}
                          decimals={getDecimalCount(market.minOrderSize)}
                        />
                      )}
                    </p>
                  </Td>
                  <Td className="text-right font-mono">
                    <FormatNumericValue
                      value={Math.abs(floorBasePosition) * market._uiPrice}
                      isUsd
                    />
                  </Td>
                  <Td className="text-right font-mono">
                    <FormatNumericValue
                      value={position.getAverageEntryPriceUi(market)}
                      decimals={getDecimalCount(market.tickSize)}
                      isUsd
                    />
                  </Td>
                  <Td className={`text-right font-mono`}>
                    <FormatNumericValue
                      value={unsettledPnl}
                      decimals={market.baseDecimals}
                    />
                  </Td>
                  <Td
                    className={`text-right font-mono ${
                      cummulativePnl > 0 ? 'text-th-up' : 'text-th-down'
                    }`}
                  >
                    <FormatNumericValue value={cummulativePnl} isUsd />
                  </Td>
                  <Td className={`text-right`}>
                    <Button
                      className="text-xs"
                      secondary
                      size="small"
                      onClick={() => showClosePositionModal(position)}
                    >
                      Close
                    </Button>
                  </Td>
                </TrBody>
              )
            })}
          </tbody>
        </Table>
      </div>
      {showMarketCloseModal && positionToClose ? (
        <MarketCloseModal
          isOpen={showMarketCloseModal}
          onClose={hideClosePositionModal}
          position={positionToClose}
        />
      ) : null}
    </>
  ) : mangoAccountAddress || connected ? (
    <div className="flex flex-col items-center p-8">
      <NoSymbolIcon className="mb-2 h-6 w-6 text-th-fgd-4" />
      <p>{t('trade:no-positions')}</p>
    </div>
  ) : (
    <div className="p-8">
      <ConnectEmptyState text={t('trade:connect-positions')} />
    </div>
  )
}

export default PerpPositions