/**
 * Stripe Connect Onboarding Component
 * For paid-tier businesses to connect their Stripe account via Connect
 */

import React, { useState } from 'react';
import { useTranslation } from 'react-i18next';
import {
  ExternalLink,
  CheckCircle,
  AlertCircle,
  Loader2,
  RefreshCw,
  CreditCard,
  Wallet,
} from 'lucide-react';
import { ConnectAccountInfo } from '../api/payments';
import { useConnectOnboarding, useRefreshConnectLink } from '../hooks/usePayments';

interface ConnectOnboardingProps {
  connectAccount: ConnectAccountInfo | null;
  tier: string;
  onSuccess?: () => void;
}

const ConnectOnboarding: React.FC<ConnectOnboardingProps> = ({
  connectAccount,
  tier,
  onSuccess,
}) => {
  const { t } = useTranslation();
  const [error, setError] = useState<string | null>(null);

  const onboardingMutation = useConnectOnboarding();
  const refreshLinkMutation = useRefreshConnectLink();

  const isActive = connectAccount?.status === 'active' && connectAccount?.charges_enabled;
  const isOnboarding = connectAccount?.status === 'onboarding' ||
    (connectAccount && !connectAccount.onboarding_complete);
  const needsOnboarding = !connectAccount;

  const getReturnUrls = () => {
    const baseUrl = window.location.origin;
    return {
      refreshUrl: `${baseUrl}/payments?connect=refresh`,
      returnUrl: `${baseUrl}/payments?connect=complete`,
    };
  };

  const handleStartOnboarding = async () => {
    setError(null);
    try {
      const { refreshUrl, returnUrl } = getReturnUrls();
      const result = await onboardingMutation.mutateAsync({ refreshUrl, returnUrl });
      // Redirect to Stripe onboarding
      window.location.href = result.url;
    } catch (err: any) {
      setError(err.response?.data?.error || t('payments.failedToStartOnboarding'));
    }
  };

  const handleRefreshLink = async () => {
    setError(null);
    try {
      const { refreshUrl, returnUrl } = getReturnUrls();
      const result = await refreshLinkMutation.mutateAsync({ refreshUrl, returnUrl });
      // Redirect to continue onboarding
      window.location.href = result.url;
    } catch (err: any) {
      setError(err.response?.data?.error || t('payments.failedToRefreshLink'));
    }
  };

  // Account type display
  const getAccountTypeLabel = () => {
    switch (connectAccount?.account_type) {
      case 'standard':
        return t('payments.standardConnect');
      case 'express':
        return t('payments.expressConnect');
      case 'custom':
        return t('payments.customConnect');
      default:
        return t('payments.connect');
    }
  };

  return (
    <div className="space-y-6">
      {/* Active Account Status */}
      {isActive && (
        <div className="bg-green-50 border border-green-200 rounded-lg p-4">
          <div className="flex items-start gap-3">
            <CheckCircle className="text-green-600 shrink-0 mt-0.5" size={20} />
            <div className="flex-1">
              <h4 className="font-medium text-green-800">{t('payments.stripeConnected')}</h4>
              <p className="text-sm text-green-700 mt-1">
                {t('payments.stripeConnectedDesc')}
              </p>
            </div>
          </div>
        </div>
      )}

      {/* Account Details */}
      {connectAccount && (
        <div className="bg-gray-50 rounded-lg p-4">
          <h4 className="font-medium text-gray-900 mb-3">{t('payments.accountDetails')}</h4>
          <div className="space-y-2 text-sm">
            <div className="flex justify-between">
              <span className="text-gray-600">{t('payments.accountType')}:</span>
              <span className="text-gray-900">{getAccountTypeLabel()}</span>
            </div>
            <div className="flex justify-between">
              <span className="text-gray-600">{t('payments.status')}:</span>
              <span
                className={`px-2 py-0.5 text-xs font-medium rounded-full ${
                  connectAccount.status === 'active'
                    ? 'bg-green-100 text-green-800'
                    : connectAccount.status === 'onboarding'
                    ? 'bg-yellow-100 text-yellow-800'
                    : connectAccount.status === 'restricted'
                    ? 'bg-red-100 text-red-800'
                    : 'bg-gray-100 text-gray-800'
                }`}
              >
                {connectAccount.status}
              </span>
            </div>
            <div className="flex justify-between items-center">
              <span className="text-gray-600">{t('payments.charges')}:</span>
              <span className="flex items-center gap-1">
                {connectAccount.charges_enabled ? (
                  <>
                    <CreditCard size={14} className="text-green-600" />
                    <span className="text-green-600">{t('payments.enabled')}</span>
                  </>
                ) : (
                  <>
                    <CreditCard size={14} className="text-gray-400" />
                    <span className="text-gray-500">{t('payments.disabled')}</span>
                  </>
                )}
              </span>
            </div>
            <div className="flex justify-between items-center">
              <span className="text-gray-600">{t('payments.payouts')}:</span>
              <span className="flex items-center gap-1">
                {connectAccount.payouts_enabled ? (
                  <>
                    <Wallet size={14} className="text-green-600" />
                    <span className="text-green-600">{t('payments.enabled')}</span>
                  </>
                ) : (
                  <>
                    <Wallet size={14} className="text-gray-400" />
                    <span className="text-gray-500">{t('payments.disabled')}</span>
                  </>
                )}
              </span>
            </div>
            {connectAccount.stripe_account_id && (
              <div className="flex justify-between">
                <span className="text-gray-600">{t('payments.accountId')}:</span>
                <code className="font-mono text-gray-900 text-xs">
                  {connectAccount.stripe_account_id}
                </code>
              </div>
            )}
          </div>
        </div>
      )}

      {/* Onboarding in Progress */}
      {isOnboarding && (
        <div className="bg-yellow-50 border border-yellow-200 rounded-lg p-4">
          <div className="flex items-start gap-3">
            <AlertCircle className="text-yellow-600 shrink-0 mt-0.5" size={20} />
            <div className="flex-1">
              <h4 className="font-medium text-yellow-800">{t('payments.completeOnboarding')}</h4>
              <p className="text-sm text-yellow-700 mt-1">
                {t('payments.onboardingIncomplete')}
              </p>
              <button
                onClick={handleRefreshLink}
                disabled={refreshLinkMutation.isPending}
                className="mt-3 flex items-center gap-2 px-4 py-2 text-sm font-medium text-yellow-800 bg-yellow-100 rounded-lg hover:bg-yellow-200 disabled:opacity-50"
              >
                {refreshLinkMutation.isPending ? (
                  <Loader2 size={16} className="animate-spin" />
                ) : (
                  <RefreshCw size={16} />
                )}
                {t('payments.continueOnboarding')}
              </button>
            </div>
          </div>
        </div>
      )}

      {/* Start Onboarding */}
      {needsOnboarding && (
        <div className="space-y-4">
          <div className="bg-blue-50 border border-blue-200 rounded-lg p-4">
            <h4 className="font-medium text-blue-800 mb-2">{t('payments.connectWithStripe')}</h4>
            <p className="text-sm text-blue-700">
              {t('payments.tierPaymentDescription', { tier })}
            </p>
            <ul className="mt-3 space-y-1 text-sm text-blue-700">
              <li className="flex items-center gap-2">
                <CheckCircle size={14} />
                {t('payments.securePaymentProcessing')}
              </li>
              <li className="flex items-center gap-2">
                <CheckCircle size={14} />
                {t('payments.automaticPayouts')}
              </li>
              <li className="flex items-center gap-2">
                <CheckCircle size={14} />
                {t('payments.pciCompliance')}
              </li>
            </ul>
          </div>

          <button
            onClick={handleStartOnboarding}
            disabled={onboardingMutation.isPending}
            className="w-full flex items-center justify-center gap-2 px-4 py-3 text-sm font-medium text-white bg-[#635BFF] rounded-lg hover:bg-[#5851ea] disabled:opacity-50"
          >
            {onboardingMutation.isPending ? (
              <Loader2 size={18} className="animate-spin" />
            ) : (
              <>
                <ExternalLink size={18} />
                {t('payments.connectWithStripe')}
              </>
            )}
          </button>
        </div>
      )}

      {/* Error Display */}
      {error && (
        <div className="bg-red-50 border border-red-200 rounded-lg p-4">
          <div className="flex items-start gap-2 text-red-800">
            <AlertCircle size={18} className="shrink-0 mt-0.5" />
            <span className="text-sm">{error}</span>
          </div>
        </div>
      )}

      {/* External Stripe Dashboard Link */}
      {isActive && (
        <a
          href="https://dashboard.stripe.com"
          target="_blank"
          rel="noopener noreferrer"
          className="flex items-center gap-2 text-sm text-gray-600 hover:text-gray-900"
        >
          <ExternalLink size={14} />
          {t('payments.openStripeDashboard')}
        </a>
      )}
    </div>
  );
};

export default ConnectOnboarding;