import { useCallback, useEffect, useRef, useState } from 'react';
import type { SmsScene } from '@dukang/shared-types';
import { request } from './api';
import { fetchClientConfig } from './pay-wechat';
import { validateMobilePhone } from './phone';

export function useSmsCode() {
  const [codeCooldown, setCodeCooldown] = useState(0);
  const [sending, setSending] = useState(false);
  const [sentHint, setSentHint] = useState('');
  const [error, setError] = useState('');
  const [mockSms, setMockSms] = useState(true);
  const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);

  useEffect(() => {
    fetchClientConfig()
      .then((cfg) => setMockSms(cfg.mockSms))
      .catch(() => {});
    return () => {
      if (timerRef.current) clearInterval(timerRef.current);
    };
  }, []);

  const startCooldown = useCallback(() => {
    setCodeCooldown(60);
    if (timerRef.current) clearInterval(timerRef.current);
    timerRef.current = setInterval(() => {
      setCodeCooldown((c) => {
        if (c <= 1) {
          if (timerRef.current) clearInterval(timerRef.current);
          return 0;
        }
        return c - 1;
      });
    }, 1000);
  }, []);

  const sendCode = useCallback(
    async (phone: string, scene: SmsScene) => {
      const phoneCheck = validateMobilePhone(phone);
      if (!phoneCheck.ok) {
        setError(phoneCheck.message ?? '请输入正确的手机号码');
        return false;
      }
      setSending(true);
      setError('');
      setSentHint('');
      try {
        await request('USER_H5', '/auth/sms/send', {
          method: 'POST',
          body: JSON.stringify({ phone, scene }),
        });
        setSentHint(mockSms ? '验证码已发送（开发模式）' : '验证码已发送，请注意查收');
        startCooldown();
        return true;
      } catch (e) {
        setError(e instanceof Error ? e.message : '发送失败');
        return false;
      } finally {
        setSending(false);
      }
    },
    [mockSms, startCooldown],
  );

  const clearMessages = useCallback(() => {
    setError('');
    setSentHint('');
  }, []);

  return {
    sendCode,
    sending,
    codeCooldown,
    sentHint,
    error,
    setError,
    clearMessages,
    mockSms,
  };
}