import React, { useEffect, useState } from 'react';
import { API, getLogo, showError, showInfo, showSuccess, getSystemName } from '../helpers';
import Turnstile from 'react-turnstile';
import { Button, Card, Form, Typography } from '@douyinfe/semi-ui';
import { IconMail } from '@douyinfe/semi-icons';
import { Link } from 'react-router-dom';
import { useTranslation } from 'react-i18next';
import Background from '../images/example.png';

const { Text, Title } = Typography;

const PasswordResetForm = () => {
  const { t } = useTranslation();
  const [inputs, setInputs] = useState({
    email: '',
  });
  const { email } = inputs;

  const [loading, setLoading] = useState(false);
  const [turnstileEnabled, setTurnstileEnabled] = useState(false);
  const [turnstileSiteKey, setTurnstileSiteKey] = useState('');
  const [turnstileToken, setTurnstileToken] = useState('');
  const [disableButton, setDisableButton] = useState(false);
  const [countdown, setCountdown] = useState(30);

  const logo = getLogo();
  const systemName = getSystemName();

  useEffect(() => {
    let status = localStorage.getItem('status');
    if (status) {
      status = JSON.parse(status);
      if (status.turnstile_check) {
        setTurnstileEnabled(true);
        setTurnstileSiteKey(status.turnstile_site_key);
      }
    }
  }, []);

  useEffect(() => {
    let countdownInterval = null;
    if (disableButton && countdown > 0) {
      countdownInterval = setInterval(() => {
        setCountdown(countdown - 1);
      }, 1000);
    } else if (countdown === 0) {
      setDisableButton(false);
      setCountdown(30);
    }
    return () => clearInterval(countdownInterval);
  }, [disableButton, countdown]);

  function handleChange(value) {
    setInputs((inputs) => ({ ...inputs, email: value }));
  }

  async function handleSubmit(e) {
    if (!email) return;
    if (turnstileEnabled && turnstileToken === '') {
      showInfo(t('请稍后几秒重试，Turnstile 正在检查用户环境！'));
      return;
    }
    setDisableButton(true);
    setLoading(true);
    const res = await API.get(
      `/api/reset_password?email=${email}&turnstile=${turnstileToken}`,
    );
    const { success, message } = res.data;
    if (success) {
      showSuccess(t('重置邮件发送成功，请检查邮箱！'));
      setInputs({ ...inputs, email: '' });
    } else {
      showError(message);
    }
    setLoading(false);
  }

  return (
    <div className="min-h-screen relative flex items-center justify-center py-12 px-4 sm:px-6 lg:px-8 overflow-hidden">
      {/* 背景图片容器 - 放大并保持居中 */}
      <div
        className="absolute inset-0 z-0 bg-cover bg-center scale-125 opacity-100"
        style={{
          backgroundImage: `url(${Background})`
        }}
      ></div>

      {/* 半透明遮罩层 */}
      <div className="absolute inset-0 bg-gradient-to-br from-teal-500/30 via-blue-500/30 to-purple-500/30 backdrop-blur-sm z-0"></div>

      <div className="w-full max-w-sm relative z-10">
        <div className="flex flex-col items-center">
          <div className="w-full max-w-md">
            <div className="flex items-center justify-center mb-6 gap-2">
              <img src={logo} alt="Logo" className="h-10 rounded-full" />
              <Title heading={3} className='!text-white'>{systemName}</Title>
            </div>

            <Card className="shadow-xl border-0 !rounded-2xl overflow-hidden">
              <div className="flex justify-center pt-6 pb-2">
                <Title heading={3} className="text-gray-800 dark:text-gray-200">{t('密码重置')}</Title>
              </div>
              <div className="px-2 py-8">
                <Form className="space-y-3">
                  <Form.Input
                    field="email"
                    label={t('邮箱')}
                    placeholder={t('请输入您的邮箱地址')}
                    name="email"
                    size="large"
                    className="!rounded-md"
                    value={email}
                    onChange={handleChange}
                    prefix={<IconMail />}
                  />

                  <div className="space-y-2 pt-2">
                    <Button
                      theme="solid"
                      className="w-full !rounded-full"
                      type="primary"
                      htmlType="submit"
                      size="large"
                      onClick={handleSubmit}
                      loading={loading}
                      disabled={disableButton}
                    >
                      {disableButton ? `${t('重试')} (${countdown})` : t('提交')}
                    </Button>
                  </div>
                </Form>

                <div className="mt-6 text-center text-sm">
                  <Text>{t('想起来了？')} <Link to="/login" className="text-blue-600 hover:text-blue-800 font-medium">{t('登录')}</Link></Text>
                </div>
              </div>
            </Card>

            {turnstileEnabled && (
              <div className="flex justify-center mt-6">
                <Turnstile
                  sitekey={turnstileSiteKey}
                  onVerify={(token) => {
                    setTurnstileToken(token);
                  }}
                />
              </div>
            )}
          </div>
        </div>
      </div>
    </div>
  );
};

export default PasswordResetForm;
