/**
 * Email Verification Required Page
 *
 * Displayed when a user needs to verify their email address before accessing the application.
 * Provides options to resend verification email and log out.
 */

import React, { useState } from 'react';
import { useTranslation } from 'react-i18next';
import { useCurrentUser } from '../hooks/useAuth';
import apiClient from '../api/client';
import { useLogout } from '../hooks/useAuth';

const EmailVerificationRequired: React.FC = () => {
  const { t } = useTranslation();
  const { data: user } = useCurrentUser();
  const logoutMutation = useLogout();
  const [sending, setSending] = useState(false);
  const [sent, setSent] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const handleResendEmail = async () => {
    setSending(true);
    setError(null);
    setSent(false);

    try {
      await apiClient.post('/api/auth/email/verify/send/');
      setSent(true);
      setTimeout(() => setSent(false), 5000); // Hide success message after 5 seconds
    } catch (err: any) {
      setError(err.response?.data?.detail || 'Failed to send verification email');
    } finally {
      setSending(false);
    }
  };

  const handleLogout = () => {
    logoutMutation.mutate();
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-blue-50 to-indigo-100 dark:from-gray-900 dark:to-gray-800 px-4">
      <div className="max-w-md w-full bg-white dark:bg-gray-800 rounded-lg shadow-xl p-8">
        {/* Icon */}
        <div className="flex justify-center mb-6">
          <div className="w-20 h-20 bg-amber-100 dark:bg-amber-900/30 rounded-full flex items-center justify-center">
            <svg
              className="w-10 h-10 text-amber-600 dark:text-amber-500"
              fill="none"
              stroke="currentColor"
              viewBox="0 0 24 24"
            >
              <path
                strokeLinecap="round"
                strokeLinejoin="round"
                strokeWidth={2}
                d="M3 8l7.89 5.26a2 2 0 002.22 0L21 8M5 19h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"
              />
            </svg>
          </div>
        </div>

        {/* Title */}
        <h1 className="text-2xl font-bold text-center text-gray-900 dark:text-white mb-2">
          Email Verification Required
        </h1>

        {/* Message */}
        <p className="text-center text-gray-600 dark:text-gray-400 mb-6">
          Please verify your email address to access your account.
        </p>

        {/* Email Display */}
        <div className="bg-gray-50 dark:bg-gray-700 rounded-lg p-4 mb-6">
          <p className="text-sm text-gray-500 dark:text-gray-400 mb-1">
            Verification email sent to:
          </p>
          <p className="text-base font-medium text-gray-900 dark:text-white break-all">
            {user?.email}
          </p>
        </div>

        {/* Instructions */}
        <div className="bg-blue-50 dark:bg-blue-900/20 border border-blue-200 dark:border-blue-800 rounded-lg p-4 mb-6">
          <p className="text-sm text-blue-800 dark:text-blue-300">
            Check your inbox for a verification email and click the link to verify your account.
            Don't forget to check your spam folder if you don't see it.
          </p>
        </div>

        {/* Success Message */}
        {sent && (
          <div className="bg-green-50 dark:bg-green-900/20 border border-green-200 dark:border-green-800 rounded-lg p-4 mb-4">
            <p className="text-sm text-green-800 dark:text-green-300 text-center">
              Verification email sent successfully! Check your inbox.
            </p>
          </div>
        )}

        {/* Error Message */}
        {error && (
          <div className="bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 rounded-lg p-4 mb-4">
            <p className="text-sm text-red-800 dark:text-red-300 text-center">
              {error}
            </p>
          </div>
        )}

        {/* Actions */}
        <div className="space-y-3">
          {/* Resend Email Button */}
          <button
            onClick={handleResendEmail}
            disabled={sending || sent}
            className="w-full px-4 py-3 bg-blue-600 hover:bg-blue-700 disabled:bg-blue-400 text-white font-medium rounded-lg transition-colors duration-200 flex items-center justify-center gap-2"
          >
            {sending ? (
              <>
                <svg
                  className="animate-spin h-5 w-5 text-white"
                  xmlns="http://www.w3.org/2000/svg"
                  fill="none"
                  viewBox="0 0 24 24"
                >
                  <circle
                    className="opacity-25"
                    cx="12"
                    cy="12"
                    r="10"
                    stroke="currentColor"
                    strokeWidth="4"
                  ></circle>
                  <path
                    className="opacity-75"
                    fill="currentColor"
                    d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
                  ></path>
                </svg>
                Sending...
              </>
            ) : sent ? (
              <>
                <svg
                  className="h-5 w-5"
                  fill="currentColor"
                  viewBox="0 0 20 20"
                >
                  <path
                    fillRule="evenodd"
                    d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z"
                    clipRule="evenodd"
                  />
                </svg>
                Email Sent
              </>
            ) : (
              <>
                <svg
                  className="h-5 w-5"
                  fill="none"
                  stroke="currentColor"
                  viewBox="0 0 24 24"
                >
                  <path
                    strokeLinecap="round"
                    strokeLinejoin="round"
                    strokeWidth={2}
                    d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"
                  />
                </svg>
                Resend Verification Email
              </>
            )}
          </button>

          {/* Logout Button */}
          <button
            onClick={handleLogout}
            className="w-full px-4 py-3 bg-gray-200 hover:bg-gray-300 dark:bg-gray-700 dark:hover:bg-gray-600 text-gray-700 dark:text-gray-300 font-medium rounded-lg transition-colors duration-200"
          >
            Log Out
          </button>
        </div>

        {/* Help Text */}
        <p className="text-center text-sm text-gray-500 dark:text-gray-400 mt-6">
          Need help? Contact support at{' '}
          <a
            href="mailto:support@smoothschedule.com"
            className="text-blue-600 dark:text-blue-400 hover:underline"
          >
            support@smoothschedule.com
          </a>
        </p>
      </div>
    </div>
  );
};

export default EmailVerificationRequired;