import { useEffect, useState } from 'react';
import type { WechatLoginResult } from '@dukang/shared-types';
import { SmsScene } from '@dukang/shared-types';
import { bindPhone, request, type SessionPayload } from '../lib/api';
import { normalizePhoneInput, validateMobilePhone } from '../lib/phone';
import { useSmsCode } from '../lib/use-sms-code';
import { useUserSession } from '../contexts/UserSessionContext';

type PhoneVerifySheetProps = {
  open: boolean;
  /** 打开时预填手机号（如收货地址中的手机号） */
  defaultPhone?: string;
  mode?: 'bind_phone' | 'wechat_bind_phone';
  wxSessionKey?: string;
  title?: string;
  description?: string;
  onClose: () => void;
  onSuccess: () => void;
};

export default function PhoneVerifySheet({
  open,
  defaultPhone,
  mode = 'bind_phone',
  wxSessionKey,
  title,
  description,
  onClose,
  onSuccess,
}: PhoneVerifySheetProps) {
  const { applySession } = useUserSession();
  const [phone, setPhone] = useState('');
  const [code, setCode] = useState('');
  const [loading, setLoading] = useState(false);
  const { sendCode, sending, codeCooldown, sentHint, error, setError, clearMessages } = useSmsCode();

  useEffect(() => {
    if (!open) {
      setPhone('');
      setCode('');
      setError('');
      clearMessages();
      return;
    }
    if (defaultPhone) {
      const normalized = normalizePhoneInput(defaultPhone);
      if (validateMobilePhone(normalized).ok) {
        setPhone(normalized);
      }
    }
  }, [open, defaultPhone, clearMessages, setError]);

  async function onSendCode() {
    clearMessages();
    await sendCode(phone, SmsScene.BIND_PHONE);
  }

  async function submit() {
    const phoneCheck = validateMobilePhone(phone);
    if (!phoneCheck.ok) {
      setError(phoneCheck.message ?? '请输入正确的手机号码');
      return;
    }
    if (!code.trim()) {
      setError('请输入验证码');
      return;
    }
    setLoading(true);
    setError('');
    try {
      if (mode === 'wechat_bind_phone') {
        if (!wxSessionKey) {
          setError('微信会话已过期，请重新授权');
          return;
        }
        const data = await request<WechatLoginResult>('USER_H5', '/auth/wechat/bind-phone', {
          method: 'POST',
          body: JSON.stringify({ wxSessionKey, phone, code }),
        });
        if (data.accessToken) {
          applySession({
            accessToken: data.accessToken,
            refreshToken: data.refreshToken ?? '',
            deviceKey: data.deviceKey,
            phoneVerified: !!data.phoneVerified,
            user: data.user as SessionPayload['user'],
          });
        }
      } else {
        const session = await bindPhone(phone, code);
        applySession(session as SessionPayload);
      }
      onSuccess();
      onClose();
    } catch (e) {
      setError(e instanceof Error ? e.message : '验证失败');
    } finally {
      setLoading(false);
    }
  }

  if (!open) return null;

  const sheetTitle = title ?? (mode === 'wechat_bind_phone' ? '绑定手机号' : '验证手机号');
  const sheetDesc =
    description ??
    (mode === 'wechat_bind_phone'
      ? '建议绑定手机号，便于订单通知与售后；关闭可跳过继续支付'
      : '建议绑定手机号，便于订单通知与售后；关闭可跳过继续下单');

  return (
    <div className="phone-verify-overlay" role="dialog" aria-modal="true">
      <button type="button" className="phone-verify-backdrop" aria-label="关闭" onClick={onClose} />
      <div className="phone-verify-sheet">
        <h3 className="phone-verify-title">{sheetTitle}</h3>
        <p className="phone-verify-desc">{sheetDesc}</p>
        <div className="login-field">
          <span className="login-field-prefix">+86</span>
          <input
            type="tel"
            className="login-field-input"
            placeholder="请输入手机号"
            maxLength={11}
            inputMode="numeric"
            value={phone}
            onChange={(e) => {
              setPhone(normalizePhoneInput(e.target.value));
              setError('');
              clearMessages();
            }}
          />
        </div>
        <div className="login-field">
          <input
            type="text"
            inputMode="numeric"
            className="login-field-input"
            placeholder="请输入验证码"
            maxLength={6}
            value={code}
            onChange={(e) => setCode(e.target.value.replace(/\D/g, '').slice(0, 6))}
          />
          <button
            type="button"
            className={`login-get-code${codeCooldown > 0 || sending ? ' disabled' : ''}`}
            disabled={codeCooldown > 0 || sending}
            onClick={onSendCode}
          >
            {sending
              ? '发送中...'
              : codeCooldown > 0
                ? `${codeCooldown}s 后重新获取`
                : '获取验证码'}
          </button>
        </div>
        {(error || sentHint) && (
          <p className={`login-msg${sentHint && !error ? ' login-msg--hint' : ''}`}>{error || sentHint}</p>
        )}
        <button type="button" className="login-sms-btn" disabled={loading} onClick={submit}>
          {loading ? '验证中...' : mode === 'wechat_bind_phone' ? '确认绑定' : '确认验证'}
        </button>
        <button type="button" className="phone-verify-skip" onClick={onClose}>
          暂不绑定
        </button>
      </div>
    </div>
  );
}