import { Binary, CPMM, DPM, FullContract } from '../../common/contract'
import { User } from '../../common/user'
import { Bet } from '../../common/bet'
import { useState } from 'react'
import { Col } from './layout/col'
import { Row } from './layout/row'
import { formatWithCommas } from '../../common/util/format'
import { OutcomeLabel } from './outcome-label'
import { Modal } from './layout/modal'
import { Title } from './title'
import { SellPanel } from './bet-panel'
import { useUserContractBets } from '../hooks/use-user-bets'
import clsx from 'clsx'
import { useSaveShares } from './use-save-shares'

export function SellRow(props: {
  contract: FullContract<DPM | CPMM, Binary>
  user: User | null | undefined
  className?: string
}) {
  const { className, contract, user } = props

  const userBets = useUserContractBets(user?.id, contract.id)
  const [showSellModal, setShowSellModal] = useState(false)

  const { mechanism } = contract
  const { yesFloorShares, noFloorShares, yesShares, noShares } = useSaveShares(
    contract,
    userBets
  )
  const floorShares = yesFloorShares || noFloorShares
  const sharesOutcome = yesFloorShares
    ? 'YES'
    : noFloorShares
    ? 'NO'
    : undefined

  if (sharesOutcome && user && mechanism === 'cpmm-1') {
    return (
      <div>
        <Col className={className}>
          <Row className="items-center justify-between gap-2 ">
            <div>
              You have {formatWithCommas(floorShares)}{' '}
              <OutcomeLabel
                outcome={sharesOutcome}
                contract={contract}
                truncate={'short'}
              />{' '}
              shares
            </div>

            <button
              className="btn btn-sm"
              style={{
                backgroundColor: 'white',
                border: '2px solid',
                color: '#3D4451',
              }}
              onClick={() => setShowSellModal(true)}
            >
              Sell
            </button>
          </Row>
        </Col>
        {showSellModal && (
          <SellSharesModal
            contract={contract as FullContract<CPMM, Binary>}
            user={user}
            userBets={userBets ?? []}
            shares={yesShares || noShares}
            sharesOutcome={sharesOutcome}
            setOpen={setShowSellModal}
          />
        )}
      </div>
    )
  }

  return <div />
}

export function SellButton(props: {
  contract: FullContract<DPM | CPMM, Binary>
  user: User | null | undefined
}) {
  const { contract, user } = props

  const userBets = useUserContractBets(user?.id, contract.id)
  const [showSellModal, setShowSellModal] = useState(false)

  const { mechanism } = contract
  const { yesFloorShares, noFloorShares, yesShares, noShares } = useSaveShares(
    contract,
    userBets
  )
  const floorShares = yesFloorShares || noFloorShares
  const sharesOutcome = yesFloorShares
    ? 'YES'
    : noFloorShares
    ? 'NO'
    : undefined

  if (sharesOutcome && user && mechanism === 'cpmm-1') {
    return (
      <Col className={'items-center'}>
        <button
          className={clsx(
            'btn-sm w-24 gap-1',
            // from the yes-no-selector:
            'flex inline-flex flex-row  items-center justify-center rounded-3xl border-2 p-2',
            sharesOutcome === 'NO'
              ? 'hover:bg-primary-focus border-primary hover:border-primary-focus text-primary hover:text-white'
              : 'border-red-400 text-red-500 hover:border-red-500 hover:bg-red-500 hover:text-white'
          )}
          onClick={() => setShowSellModal(true)}
        >
          {'Sell ' + sharesOutcome}
        </button>
        <div className={'mt-1 w-24 text-center text-sm text-gray-500'}>
          {'(' + floorShares + ' shares)'}
        </div>
        {showSellModal && (
          <SellSharesModal
            contract={contract as FullContract<CPMM, Binary>}
            user={user}
            userBets={userBets ?? []}
            shares={yesShares || noShares}
            sharesOutcome={sharesOutcome}
            setOpen={setShowSellModal}
          />
        )}
      </Col>
    )
  }
  return <div />
}

function SellSharesModal(props: {
  contract: FullContract<CPMM, Binary>
  userBets: Bet[]
  shares: number
  sharesOutcome: 'YES' | 'NO'
  user: User
  setOpen: (open: boolean) => void
}) {
  const { contract, shares, sharesOutcome, userBets, user, setOpen } = props

  return (
    <Modal open={true} setOpen={setOpen}>
      <Col className="rounded-md bg-white px-8 py-6">
        <Title className="!mt-0" text={'Sell shares'} />

        <div className="mb-6">
          You have {formatWithCommas(Math.floor(shares))}{' '}
          <OutcomeLabel
            outcome={sharesOutcome}
            contract={contract}
            truncate={'short'}
          />{' '}
          shares
        </div>

        <SellPanel
          contract={contract}
          shares={shares}
          sharesOutcome={sharesOutcome}
          user={user}
          userBets={userBets ?? []}
          onSellSuccess={() => setOpen(false)}
        />
      </Col>
    </Modal>
  )
}