import React, { useEffect, useState, useCallback } from 'react';
import {
  Typography,
  Tag,
  Button,
  Banner,
  Skeleton,
  Spin,
  Tooltip,
  Input,
  InputNumber,
  Progress,
} from '@douyinfe/semi-ui';
import { SiAlipay, SiWechat, SiStripe } from 'react-icons/si';
import {
  CreditCard,
  WalletCards,
  Activity,
  ChartColumn,
  Receipt,
  Gift,
  DollarSign,
  Ticket,
  ChevronRight,
  Gauge,
  TrendingUp,
} from 'lucide-react';
import { API } from '../../helpers';
import { useMinimumLoadingTime } from '../../hooks/common/useMinimumLoadingTime';
import { getCurrencyConfig } from '../../helpers/render';
import SubscriptionPlansCard from './SubscriptionPlansCard';
import './preset-amount-card.css';

const { Text } = Typography;

const RechargeCard = ({
  t,
  enableOnlineTopUp,
  enableStripeTopUp,
  enableCreemTopUp,
  creemProducts,
  creemPreTopUp,
  presetAmounts,
  selectedPreset,
  selectPresetAmount,
  onPresetCardClick,
  formatLargeNumber,
  priceRatio,
  topUpCount,
  minTopUp,
  renderTopUpCount,
  getAmount,
  setTopUpCount,
  setSelectedPreset,
  renderAmount,
  amountLoading,
  payMethods,
  preTopUp,
  paymentLoading,
  payWay,
  redemptionCode,
  setRedemptionCode,
  topUp,
  isSubmitting,
  topUpLink,
  openTopUpLink,
  userState,
  renderQuota,
  statusLoading,
  topupInfo,
  onOpenHistory,
  enableAlipayTopUp,
  enableWechatPayTopUp,
  enableWaffoTopUp,
  waffoTopUp,
  waffoPayMethods,
  subscriptionLoading = false,
  subscriptionPlans = [],
  billingPreference,
  onChangeBillingPreference,
  activeSubscriptions = [],
  allSubscriptions = [],
  reloadSubscriptionSelf,
}) => {
  const [activeTab, setActiveTab] = useState('topup');
  const [customAmount, setCustomAmount] = useState(10);
  const [rpmTpmData, setRpmTpmData] = useState(null);
  const showAmountSkeleton = useMinimumLoadingTime(amountLoading);
  const shouldShowSubscription =
    !subscriptionLoading && subscriptionPlans.length > 0;

  const statusStr = localStorage.getItem('status');
  let usdRate = 7;
  try {
    if (statusStr) {
      const s = JSON.parse(statusStr);
      usdRate = s?.usd_exchange_rate || 7;
    }
  } catch (e) {}

  const { symbol, rate, type: currencyType } = getCurrencyConfig();

  const calcRmb = (usdAmount) => {
    return usdAmount * (priceRatio || 1);
  };

  const getDiscountForAmount = (val) => {
    const preset = presetAmounts.find((p) => p.value === val);
    if (preset?.discount) return preset.discount;
    if (topupInfo?.discount?.[val]) return topupInfo.discount[val];
    return 1.0;
  };

  const handleCustomAmountChange = (val) => {
    const num = Number(val);
    if (!num || num <= 0) return;
    setCustomAmount(num);
    setTopUpCount(num);
    setSelectedPreset(null);
    getAmount(num);
  };

  const handlePresetClick = (preset) => {
    const discount = getDiscountForAmount(preset.value);
    const num = preset.value * discount;
    setCustomAmount(preset.value);
    if (onPresetCardClick) {
      onPresetCardClick(preset);
    } else {
      selectPresetAmount(preset);
    }
  };

  useEffect(() => {
    if (subscriptionLoading) return;
    if (shouldShowSubscription) {
      setActiveTab('subscription');
    }
  }, [shouldShowSubscription, subscriptionLoading]);

  const fetchRpmTpm = useCallback(async () => {
    try {
      const now = Math.floor(Date.now() / 1000);
      const res = await API.get(
        `/api/log/self/stat?start_timestamp=${now - 3600}&end_timestamp=${now}`,
      );
      if (res?.data?.success) {
        setRpmTpmData(res.data.data);
      }
    } catch {
      // 静默失败
    }
  }, []);

  useEffect(() => {
    fetchRpmTpm();
    const interval = setInterval(fetchRpmTpm, 30000);
    return () => clearInterval(interval);
  }, [fetchRpmTpm]);

  const isAnyPayEnabled =
    enableOnlineTopUp ||
    enableStripeTopUp ||
    enableCreemTopUp ||
    enableAlipayTopUp ||
    enableWechatPayTopUp ||
    enableWaffoTopUp;

  const tabs = [
    { key: 'topup', label: t('充值'), desc: t('灵活付费') },
    { key: 'subscription', label: t('订阅'), desc: t('享更低单价') },
  ];

  const totalQuota = (userState?.user?.used_quota || 0) + (userState?.user?.quota || 0);
  const usagePercent = totalQuota > 0 ? Math.round(((userState?.user?.used_quota || 0) / totalQuota) * 100) : 0;

  // 统计卡片配置
  const statCards = [
    {
      key: 'balance',
      icon: WalletCards,
      label: t('当前余额'),
      value: userState?.user?.quota,
      sublabel: `${t('已用')} ${usagePercent}%`,
      highlight: true,
    },
    {
      key: 'usage',
      icon: ChartColumn,
      label: t('总用量'),
      value: userState?.user?.used_quota,
      sublabel: t('总消耗额度'),
    },
    {
      key: 'requests',
      icon: Activity,
      label: t('API 请求'),
      value: userState?.user?.request_count || 0,
      sublabel: t('总请求数'),
      raw: true,
    },
    {
      key: 'rpm',
      icon: Gauge,
      label: t('每分钟请求'),
      value: rpmTpmData?.rpm,
      sublabel: t('最近1分钟'),
      raw: true,
      live: true,
    },
    {
      key: 'tpm',
      icon: TrendingUp,
      label: t('每分钟Token'),
      value: rpmTpmData?.tpm,
      sublabel: t('最近1分钟'),
      raw: true,
      live: true,
    },
  ];

  const topupContent = (
    <div className='grid gap-5 lg:grid-cols-[1fr_380px] lg:items-start'>
      {/* 左侧：充值卡片 */}
      <div className='rounded-2xl border border-slate-200 bg-white dark:border-white/10 dark:bg-white/[0.02]'>
        {/* 卡片头部 */}
        <div className='flex items-center gap-3 border-b border-slate-100 px-5 py-4 dark:border-white/5'>
          <div className='flex h-9 w-9 items-center justify-center rounded-xl bg-emerald-50 text-emerald-600 dark:bg-emerald-500/10 dark:text-emerald-400'>
            <DollarSign className='h-4 w-4' />
          </div>
          <div>
            <div className='text-base font-semibold text-slate-900 dark:text-white'>
              {t('账户充值')}
            </div>
            <div className='text-xs text-slate-400 dark:text-white/40'>
              {t('选择金额和支付方式完成充值')}
            </div>
          </div>
        </div>

        <div className='space-y-5 p-5'>
          {isAnyPayEnabled ? (
            <>
              {/* 预设额度 */}
              <section>
                <div className='mb-3 flex items-center justify-between'>
                  <span className='text-sm font-medium text-slate-700 dark:text-slate-300'>
                    {t('充值金额')}
                  </span>
                  <span className='text-xs text-slate-400 dark:text-white/40'>
                    USD
                  </span>
                </div>
                <div className='grid grid-cols-3 gap-2'>
                  {presetAmounts.map((preset, index) => {
                    const discount = getDiscountForAmount(preset.value);
                    const rmbAmount = calcRmb(preset.value * discount);
                    const isSelected = selectedPreset === preset.value;
                    return (
                      <button
                        key={index}
                        type='button'
                        onClick={() => handlePresetClick(preset)}
                        className={`group relative flex flex-col items-center rounded-xl border-2 px-3 py-3 transition-all duration-200 ${
                          isSelected
                            ? 'border-emerald-500 bg-emerald-50/50 dark:border-emerald-400 dark:bg-emerald-500/10'
                            : 'border-slate-100 bg-white hover:border-slate-300 hover:shadow-sm dark:border-white/5 dark:bg-transparent dark:hover:border-white/20'
                        }`}
                      >
                        {discount < 1.0 && (
                          <span className='absolute -top-2 right-2 rounded-full bg-emerald-500 px-2 py-0.5 text-[10px] font-bold text-white'>
                            {(discount * 10).toFixed(1)}{t('折')}
                          </span>
                        )}
                        <span className={`text-xl font-bold tracking-tight ${isSelected ? 'text-emerald-700 dark:text-emerald-400' : 'text-slate-900 dark:text-white'}`}>
                          ${formatLargeNumber(preset.value)}
                        </span>
                        <span className='mt-1 text-xs text-slate-400 dark:text-white/40'>
                          ¥{rmbAmount.toFixed(0)}
                        </span>
                      </button>
                    );
                  })}
                </div>
              </section>

              {/* 自定义金额 */}
              <section>
                <div className='mb-3'>
                  <span className='text-sm font-medium text-slate-700 dark:text-slate-300'>
                    {t('自定义金额')}
                  </span>
                </div>
                <div className='flex items-center gap-3'>
                  <div className='relative flex-1'>
                    <span className='pointer-events-none absolute inset-y-0 left-3 flex items-center text-sm font-medium text-slate-400'>
                      $
                    </span>
                    <InputNumber
                      min={minTopUp}
                      max={999999999}
                      value={customAmount}
                      onChange={handleCustomAmountChange}
                      className='!h-10 !rounded-xl !pl-7 !text-base'
                      style={{ width: '100%' }}
                    />
                  </div>
                  <div className='flex h-10 items-center gap-2 rounded-xl border border-slate-200 bg-slate-50 px-4 dark:border-white/10 dark:bg-white/5'>
                    <span className='text-xs text-slate-400'>{t('应付')}</span>
                    <span className='text-sm font-semibold text-slate-700 dark:text-white'>
                      ¥{calcRmb(customAmount * getDiscountForAmount(customAmount)).toFixed(0)}
                    </span>
                  </div>
                </div>
              </section>

              {/* 支付方式 */}
              <section>
                <div className='mb-3'>
                  <span className='text-sm font-medium text-slate-700 dark:text-slate-300'>
                    {t('支付方式')}
                  </span>
                </div>
                <div className='flex flex-wrap gap-2'>
                  {payMethods
                    .filter((m) => m.type !== 'waffo')
                    .map((payMethod) => {
                      const minTopupVal = Number(payMethod.min_topup) || 0;
                      const isStripe = payMethod.type === 'stripe';
                      const isAlipay = payMethod.type === 'alipay';
                      const isWechat = payMethod.type === 'wxpay';
                      const disabled =
                        (!enableOnlineTopUp && !isStripe && !isAlipay && !isWechat) ||
                        (!enableStripeTopUp && isStripe) ||
                        (!enableAlipayTopUp && isAlipay) ||
                        (!enableWechatPayTopUp && isWechat) ||
                        minTopupVal > Number(topUpCount || 0);

                      const getIcon = () => {
                        if (isAlipay)
                          return <SiAlipay size={18} color='#1677FF' />;
                        if (isWechat)
                          return <SiWechat size={18} color='#07C160' />;
                        if (isStripe)
                          return <SiStripe size={18} color='#635BFF' />;
                        return <CreditCard size={18} />;
                      };

                      const btn = (
                        <Button
                          key={payMethod.type}
                          theme='outline'
                          type='tertiary'
                          onClick={() => preTopUp(payMethod.type)}
                          disabled={disabled}
                          loading={paymentLoading && payWay === payMethod.type}
                          icon={getIcon()}
                          className='!h-10 !rounded-xl !px-5 !text-sm'
                        >
                          {payMethod.name}
                        </Button>
                      );

                      if (disabled && minTopupVal > Number(topUpCount || 0)) {
                        return (
                          <Tooltip
                            content={t('此支付方式最低充值金额为') + ' ' + minTopupVal}
                            key={payMethod.type}
                          >
                            {btn}
                          </Tooltip>
                        );
                      }
                      return <React.Fragment key={payMethod.type}>{btn}</React.Fragment>;
                    })}

                  {enableWaffoTopUp &&
                    waffoPayMethods &&
                    waffoPayMethods.length > 0 &&
                    waffoPayMethods.map((method, index) => (
                      <Button
                        key={`waffo-${index}`}
                        theme='outline'
                        type='tertiary'
                        onClick={() => waffoTopUp(index)}
                        loading={paymentLoading}
                        icon={
                          method.icon ? (
                            <img
                              src={method.icon}
                              alt={method.name}
                              style={{ width: 18, height: 18, objectFit: 'contain' }}
                            />
                          ) : (
                            <CreditCard size={18} />
                          )
                        }
                        className='!h-10 !rounded-xl !px-5 !text-sm'
                      >
                        {method.name}
                      </Button>
                    ))}

                  {enableCreemTopUp &&
                    creemProducts.length > 0 &&
                    creemProducts.map((product, index) => (
                      <Button
                        key={`creem-${index}`}
                        theme='outline'
                        type='tertiary'
                        onClick={() => creemPreTopUp(product)}
                        className='!h-10 !rounded-xl !px-5 !text-sm'
                      >
                        {product.name} - {product.currency === 'EUR' ? '€' : '$'}
                        {product.price}
                      </Button>
                    ))}
                </div>
              </section>
            </>
          ) : (
            <Banner
              type='info'
              description={t('管理员未开启在线充值功能，请联系管理员开启或使用兑换码充值。')}
              className='!rounded-xl'
              closeIcon={null}
            />
          )}
        </div>
      </div>

      {/* 右侧：兑换码 + 账单入口 */}
      <div className='space-y-4'>
        <div className='rounded-2xl border border-slate-200 bg-white dark:border-white/10 dark:bg-white/[0.02]'>
          <div className='flex items-center gap-3 border-b border-slate-100 px-5 py-4 dark:border-white/5'>
            <div className='flex h-9 w-9 items-center justify-center rounded-xl bg-amber-50 text-amber-600 dark:bg-amber-500/10 dark:text-amber-400'>
              <Gift className='h-4 w-4' />
            </div>
            <div>
              <div className='text-base font-semibold text-slate-900 dark:text-white'>
                {t('兑换码')}
              </div>
              <div className='text-xs text-slate-400 dark:text-white/40'>
                {t('输入兑换码获取额度')}
              </div>
            </div>
          </div>
          <div className='space-y-3 p-5'>
            <Input
              placeholder={t('请输入兑换码')}
              value={redemptionCode}
              onChange={setRedemptionCode}
              className='!h-10 !rounded-xl'
            />
            <Button
              type='primary'
              theme='solid'
              onClick={topUp}
              loading={isSubmitting}
              disabled={!redemptionCode}
              className='!h-10 !w-full !rounded-xl !bg-emerald-600 hover:!bg-emerald-700'
            >
              {t('立即兑换')}
            </Button>
            {topUpLink && (
              <button
                onClick={openTopUpLink}
                className='flex w-full items-center justify-center gap-1 text-xs text-slate-400 transition-colors hover:text-slate-600 dark:text-white/40 dark:hover:text-white/70'
              >
                <Ticket className='h-3 w-3' />
                {t('购买兑换码')}
                <ChevronRight className='h-3 w-3' />
              </button>
            )}
          </div>
        </div>

        {/* 账单入口 */}
        <button
          onClick={onOpenHistory}
          className='flex w-full items-center justify-between rounded-2xl border border-slate-200 bg-white px-5 py-4 transition-all hover:border-slate-300 hover:shadow-sm dark:border-white/10 dark:bg-white/[0.02] dark:hover:border-white/20'
        >
          <div className='flex items-center gap-3'>
            <div className='flex h-9 w-9 items-center justify-center rounded-xl bg-slate-50 text-slate-500 dark:bg-white/5 dark:text-white/60'>
              <Receipt className='h-4 w-4' />
            </div>
            <div className='text-left'>
              <div className='text-sm font-medium text-slate-700 dark:text-slate-300'>
                {t('充值记录')}
              </div>
              <div className='text-xs text-slate-400 dark:text-white/40'>
                {t('查看历史账单明细')}
              </div>
            </div>
          </div>
          <ChevronRight className='h-4 w-4 text-slate-300 dark:text-white/20' />
        </button>
      </div>
    </div>
  );

  return (
    <div className='flex w-full flex-col gap-5'>
      {/* 统计卡片 */}
      <div className='grid grid-cols-3 md:grid-cols-5 gap-0 overflow-hidden rounded-2xl border border-slate-200 bg-white dark:border-white/10 dark:bg-white/[0.02]'>
        {statCards.map((card, i) => (
          <div
            key={card.key}
            className={`relative flex flex-col px-4 py-4 ${
              i < 4 ? 'border-r border-slate-100 dark:border-white/5' : ''
            }`}
          >
            <div className='flex items-center gap-2'>
              <card.icon
                className={`h-3.5 w-3.5 ${
                  card.highlight
                    ? 'text-emerald-500 dark:text-emerald-400'
                    : 'text-slate-400 dark:text-white/40'
                }`}
              />
              <span className='text-xs font-medium text-slate-400 dark:text-white/40'>
                {card.label}
                {card.live && (
                  <span className='ml-1 inline-block h-1.5 w-1.5 rounded-full bg-emerald-500 animate-pulse' />
                )}
              </span>
            </div>
            <div
              className={`mt-2 text-2xl font-bold ${
                card.highlight
                  ? 'text-emerald-600 dark:text-emerald-400'
                  : 'text-slate-900 dark:text-white'
              }`}
            >
              {statusLoading && !card.live ? (
                <Skeleton.Title style={{ width: 60, height: 28, margin: 0 }} />
              ) : card.raw ? (
                card.value != null ? card.value : '—'
              ) : (
                renderQuota(card.value)
              )}
            </div>
            <div className='mt-1 text-xs text-slate-400 dark:text-white/40'>
              {card.sublabel}
            </div>
            {card.key === 'balance' && (
              <div className='mt-3'>
                <Progress
                  percent={usagePercent}
                  strokeWidth={6}
                  stroke='var(--semi-color-success)'
                  aria-label='usage percent'
                  showInfo={false}
                />
              </div>
            )}
          </div>
        ))}
      </div>

      {/* 标签切换 */}
      {shouldShowSubscription && (
        <div className='flex justify-start'>
          <div className='inline-flex items-center rounded-xl bg-slate-100 p-1 dark:bg-white/5'>
            {tabs.map((tab) => (
              <button
                key={tab.key}
                type='button'
                onClick={() => setActiveTab(tab.key)}
                className={`flex items-center gap-2 rounded-lg px-5 py-2.5 text-sm font-medium transition-all duration-200 ${
                  activeTab === tab.key
                    ? 'bg-white text-slate-900 shadow-sm dark:bg-slate-700 dark:text-white'
                    : 'text-slate-500 hover:text-slate-700 dark:text-white/40 dark:hover:text-white/70'
                }`}
              >
                {tab.label}
                <span className='text-xs font-normal text-slate-400 dark:text-white/40'>
                  {tab.desc}
                </span>
              </button>
            ))}
          </div>
        </div>
      )}

      {/* 主体内容 */}
      {statusLoading ? (
        <div className='flex items-center justify-center py-16'>
          <Spin size='large' />
        </div>
      ) : shouldShowSubscription && activeTab === 'subscription' ? (
        <SubscriptionPlansCard
          t={t}
          loading={subscriptionLoading}
          plans={subscriptionPlans}
          payMethods={payMethods}
          enableOnlineTopUp={enableOnlineTopUp}
          enableStripeTopUp={enableStripeTopUp}
          enableCreemTopUp={enableCreemTopUp}
          billingPreference={billingPreference}
          onChangeBillingPreference={onChangeBillingPreference}
          activeSubscriptions={activeSubscriptions}
          allSubscriptions={allSubscriptions}
          reloadSubscriptionSelf={reloadSubscriptionSelf}
          withCard={false}
        />
      ) : (
        topupContent
      )}
    </div>
  );
};

export default RechargeCard;