import { Button } from '../../../components/ui/button'
import { usePaymentNavigation } from '../lib/navigation'
import React from 'react'
import { PaymentInstructions } from './PaymentInstructions'
import { CardLogosRow } from './PaymentLogos'
import { ensureMidtrans3ds, getCardToken, authenticate3ds } from '../lib/midtrans3ds'
import { Logger } from '../../../lib/logger'
import { Env } from '../../../lib/env'
import { postCharge } from '../../../services/api'
import { InlinePaymentStatus } from './InlinePaymentStatus'
import { toast } from '../../../components/ui/toast'

export function CardPanel({ orderId, amount, locked, onChargeInitiated }: { orderId: string; amount: number; locked?: boolean; onChargeInitiated?: () => void }) {
  const nav = usePaymentNavigation()
  const [saveCard, setSaveCard] = React.useState(false)
  const [showGuide, setShowGuide] = React.useState(false)
  const [busy, setBusy] = React.useState(false)
  const [charged, setCharged] = React.useState(false)
  const [cardNumber, setCardNumber] = React.useState('')
  const [exp, setExp] = React.useState('')
  const [cvv, setCvv] = React.useState('')
  function formatCard(value: string) {
    const digits = value.replace(/\D/g, '')
    const groups = digits.match(/.{1,4}/g)
    return groups ? groups.join('-') : digits
  }
  function formatExp(value: string) {
    let digits = value.replace(/\D/g, '')
    if (digits.length > 4) digits = digits.slice(0, 4)
    if (digits.length >= 3) return `${digits.slice(0,2)}/${digits.slice(2)}`
    if (digits.length >= 1) return digits
    return ''
  }
  function formatCvv(value: string) {
    return value.replace(/\D/g, '').slice(0, 4)
  }
  React.useEffect(() => { ensureMidtrans3ds().catch(() => {}) }, [])
  return (
    <div className="space-y-3">
      <div className="font-medium">Kartu kredit/debit</div>
      <CardLogosRow compact />
      <div className="space-y-2">
        <label className="block">
          <div className="text-xs text-gray-600">Nomor kartu</div>
          <input type="text" inputMode="numeric" maxLength={23} placeholder="0000-0000-0000-0000" className="w-full rounded border px-3 py-2" value={cardNumber} onChange={(e) => setCardNumber(formatCard(e.target.value))} />
        </label>
        <div className="grid grid-cols-2 gap-2">
          <label className="block">
            <div className="text-xs text-gray-600">Masa berlaku</div>
            <input type="text" inputMode="numeric" maxLength={5} placeholder="MM/YY" className="w-full rounded border px-3 py-2" value={exp} onChange={(e) => setExp(formatExp(e.target.value))} />
          </label>
          <label className="block">
            <div className="text-xs text-gray-600">CVV</div>
            <input type="password" inputMode="numeric" maxLength={4} placeholder="123" className="w-full rounded border px-3 py-2" value={cvv} onChange={(e) => setCvv(formatCvv(e.target.value))} />
          </label>
        </div>
        <label className="flex items-center gap-2 text-sm">
          <input type="checkbox" checked={saveCard} onChange={(e) => setSaveCard(e.target.checked)} />
          Simpan kartu ini
        </label>
      </div>
      <button
        type="button"
        onClick={() => setShowGuide((v) => !v)}
        className="text-xs text-brand-600 hover:underline"
        aria-expanded={showGuide}
      >
        Cara bayar
      </button>
      {showGuide && <PaymentInstructions method="credit_card" />}
      {locked && (
        <div className="text-xs text-gray-600">Metode terkunci. Lanjutkan verifikasi 3DS/OTP pada kartu Anda.</div>
      )}
      <div className="pt-2 space-y-2">
        <Button
          className="w-full"
          aria-busy={busy}
          disabled={busy}
          onClick={async () => {
            try {
              setBusy(true)
              onChargeInitiated?.()
              Logger.info('card.pay.click', { order_id: orderId, amount })
              // Basic parse for MM/YY
              const [mmRaw, yyRaw] = exp.split('/')
              const mm = (mmRaw || '').trim()
              const yy = (yyRaw || '').trim()
              const sanitizedCard = cardNumber.replace(/[^0-9]/g, '')
              // Minimal validation
              if (sanitizedCard.length < 13 || sanitizedCard.length > 19) {
                Logger.warn('card.input.invalid', { reason: 'card_number_length', length: sanitizedCard.length })
                toast.error('Nomor kartu tidak valid. Harus 13–19 digit.')
                return
              }
              const mmNum = Number(mm)
              if (!mm || mm.length !== 2 || mmNum < 1 || mmNum > 12) {
                Logger.warn('card.input.invalid', { reason: 'exp_month', value: mm })
                toast.error('Format bulan kedaluwarsa tidak valid (MM).')
                return
              }
              if (!yy || yy.length < 2) {
                Logger.warn('card.input.invalid', { reason: 'exp_year', value: yy })
                toast.error('Format tahun kedaluwarsa tidak valid (YY).')
                return
              }
              const cvvSan = cvv.replace(/[^0-9]/g, '')
              if (cvvSan.length < 3 || cvvSan.length > 4) {
                Logger.warn('card.input.invalid', { reason: 'cvv_length', length: cvvSan.length })
                toast.error('CVV harus 3–4 digit.')
                return
              }
              if (Env.LOG_LEVEL === 'debug') {
                Logger.debug('card.input.sanitized', Logger.mask({ card_number: sanitizedCard, card_cvv: cvvSan, card_exp_month: mm, card_exp_year: yy }))
              }
              const tokenId = await getCardToken({ card_number: sanitizedCard, card_exp_month: mm, card_exp_year: yy, card_cvv: cvv })
              Logger.info('card.token.success', Logger.mask({ token_id: tokenId }))
              const payload = {
                payment_type: 'credit_card',
                transaction_details: { order_id: orderId, gross_amount: amount },
                credit_card: { token_id: tokenId, authentication: true, save_token_id: saveCard },
              }
              Logger.info('card.charge.start', { order_id: orderId })
              const res = await postCharge(payload)
              Logger.info('card.charge.done', { status_code: res?.status_code, transaction_status: res?.transaction_status })
              if (res?.redirect_url) {
                Logger.info('card.3ds.redirect')
                authenticate3ds(res.redirect_url)
              }
              if (res?.transaction_status === 'capture' || res?.transaction_status === 'settlement') {
                setCharged(true)
                Logger.info('card.charge.success', { transaction_status: res?.transaction_status })
              }
            } catch (e) {
              Logger.error('card.process.error', { message: (e as Error)?.message })
              toast.error(`Gagal memproses kartu: ${(e as Error).message}`)
            } finally {
              setBusy(false)
            }
          }}
        >
          {busy ? (
            <span className="inline-flex items-center justify-center gap-2">
              <span className="h-4 w-4 animate-spin rounded-full border-2 border-white/70 border-t-transparent" aria-hidden />
              Memproses pembayaran…
            </span>
          ) : 'Bayar sekarang'}
        </Button>
        <Button
          variant="outline"
          className="w-full"
          disabled={busy || (!charged && !locked)}
          onClick={() => nav.toStatus(orderId, 'credit_card')}
        >
          Buka halaman status
        </Button>
      </div>
      {/* Status inline dengan polling otomatis */}
      <InlinePaymentStatus orderId={orderId} method="credit_card" compact />
    </div>
  )
}