/**
 * 左侧菜单组件
 * 基于 react-native-paper Drawer 组件重建
 * 功能包括：
 * - 用户钱包信息
 * - 菜单项导航
 * - 利息宝显示
 * - 登录状态判断
 */

import React, { useState, useCallback, useMemo } from 'react';
import { View, Text, ScrollView, Modal, TouchableOpacity, Dimensions } from 'react-native';
import { Drawer, Button, Divider } from 'react-native-paper';
import { useColorScheme, useThemeColors } from '@/theme';
import { createThemeStyles } from '@/theme';
import { useIsLoggedIn, useUser } from '@/stores';
import Ionicons from '@expo/vector-icons/Ionicons';
import WalletAmount from '../WalletAmount';

const { width } = Dimensions.get('window');

/**
 * 创建主题样式
 */
const styles = createThemeStyles((colors) => ({
  overlay: {
    flex: 1,
    backgroundColor: 'rgba(0, 0, 0, 0.5)',
  },
  drawerContainer: {
    flex: 1,
    backgroundColor: colors.background,
    width: width * 0.65,
    position: 'absolute',
    top: 0,
    left: 0,
    right: 0,
    bottom: 0,
  },
  container: {
    flex: 1,
    backgroundColor: colors.background,
  },
  walletSection: {
    paddingHorizontal: 16,
    paddingVertical: 16,
    backgroundColor: colors.card,
    marginHorizontal: 12,
    marginVertical: 12,
    borderRadius: 12,
  },
  walletLabel: {
    fontSize: 12,
    color: colors.text + '80',
    marginBottom: 8,
  },
  walletButtons: {
    flexDirection: 'row',
    gap: 8,
    marginTop: 12,
  },
  buttonText: {
    fontSize: 12,
    fontWeight: '600',
  },
  lixibaoSection: {
    marginHorizontal: 12,
    marginVertical: 12,
    paddingHorizontal: 12,
    paddingVertical: 12,
    borderRadius: 12,
    borderWidth: 2,
    borderColor: colors.primary,
    backgroundColor: colors.card,
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'space-between',
  },
  lixibaoLeft: {
    flexDirection: 'row',
    alignItems: 'center',
    flex: 1,
  },
  lixibaoInfo: {
    flex: 1,
  },
  lixibaoLabel: {
    fontSize: 12,
    color: colors.text + '80',
  },
  lixibaoValue: {
    fontSize: 14,
    fontWeight: '700',
    color: colors.primary,
    marginTop: 4,
  },
  emptyText: {
    textAlign: 'center',
    fontSize: 14,
    color: colors.text + '80',
    paddingVertical: 40,
  },
}));

interface LeftMenuProps {
  visible: boolean;
  onClose: () => void;
}

interface MenuItem {
  id: string;
  title: string;
  icon: string;
  route?: string;
  requireLogin?: boolean;
}

/**
 * 左侧菜单组件
 */
export default function LeftMenu({ visible, onClose }: LeftMenuProps) {
  const colorScheme = useColorScheme();
  const s = styles[colorScheme];
  const themeColors = useThemeColors();
  const isLoggedIn = useIsLoggedIn();
  const user = useUser();

  const [walletBalance] = useState(0); // 从 store 获取
  const [interestBalance] = useState(0); // 从 store 获取

  // 菜单项配置
  const menuItems: MenuItem[] = useMemo(
    () => [
      { id: 'balance', title: '利息宝', icon: 'gift' },
      {
        id: 'services',
        title: '客服',
        icon: 'headset',
        route: '/services',
      },
      {
        id: 'collect',
        title: '收藏',
        icon: 'star',
        route: '/collect',
      },
      {
        id: 'recent',
        title: '最近',
        icon: 'time',
        route: '/recent',
      },
      {
        id: 'betRecord',
        title: '投注记录',
        icon: 'document-text',
        route: '/betRecord',
        requireLogin: true,
      },
      {
        id: 'activity',
        title: '任务中心',
        icon: 'checkmark-circle',
        route: '/activity',
      },
      {
        id: 'bonus',
        title: '福利中心',
        icon: 'gift',
        route: '/bonus',
      },
      {
        id: 'rebate',
        title: '自助返水',
        icon: 'cash',
        route: '/rebate',
      },
      {
        id: 'findBalance',
        title: '找回余额',
        icon: 'search',
        route: '/findBalance',
      },
      {
        id: 'message',
        title: '消息中心',
        icon: 'mail',
        route: '/message',
      },
      {
        id: 'promotion',
        title: '推广赚钱',
        icon: 'share-social',
        route: '/promotion',
      },
      {
        id: 'backup',
        title: '备用网站',
        icon: 'link',
        route: '/backup',
      },
    ],
    []
  );

  const handleMenuItemPress = useCallback(
    (item: MenuItem) => {
      if (item.requireLogin && !isLoggedIn) {
        // 显示登录提示
        return;
      }
      // 导航到对应页面
      console.log('Navigate to:', item.route);
      onClose();
    },
    [isLoggedIn, onClose]
  );

  const handleDeposit = useCallback(() => {
    console.log('Navigate to deposit');
    onClose();
  }, [onClose]);

  const handleWithdraw = useCallback(() => {
    console.log('Navigate to withdraw');
    onClose();
  }, [onClose]);

  return (
    <Modal visible={visible} transparent animationType="fade" onRequestClose={onClose}>
      <View style={s.overlay}>
        <TouchableOpacity style={{ flex: 1 }} activeOpacity={1} onPress={onClose} />
        <View style={s.drawerContainer}>
          <ScrollView showsVerticalScrollIndicator={false}>
            {/* 用户信息或登录提示 */}
            {isLoggedIn && user ? (
              <>
                {/* 钱包信息 */}
                <View style={s.walletSection}>
                  <Text style={s.walletLabel}>钱包余额</Text>
                  <WalletAmount balance={walletBalance} />
                  <View style={s.walletButtons}>
                    <Button
                      mode="contained"
                      onPress={handleDeposit}
                      style={{ flex: 1 }}
                      labelStyle={s.buttonText}
                    >
                      充值
                    </Button>
                    <Button
                      mode="outlined"
                      onPress={handleWithdraw}
                      style={{ flex: 1 }}
                      labelStyle={s.buttonText}
                    >
                      提现
                    </Button>
                  </View>
                </View>
              </>
            ) : (
              <Text style={s.emptyText}>加入我们，开启畅赢人生！</Text>
            )}

            <Divider style={{ marginVertical: 8 }} />

            {/* 菜单项 */}
            <Drawer.Section title="">
              {menuItems.map((item) => (
                <Drawer.Item
                  key={item.id}
                  label={item.title}
                  icon={({ color, size }) => (
                    <Ionicons name={item.icon as any} size={size} color={color} />
                  )}
                  onPress={() => handleMenuItemPress(item)}
                  active={false}
                  right={() => (
                    <Ionicons
                      name="chevron-forward"
                      size={20}
                      color={themeColors.text + '60'}
                      style={{ marginRight: -10 }}
                    />
                  )}
                  style={{ marginHorizontal: 0 }}
                />
              ))}
            </Drawer.Section>
          </ScrollView>
        </View>
      </View>
    </Modal>
  );
}