/**
 * 游戏大厅组件
 *
 * 展示游戏列表，使用真实数据
 */

import React, { useState, useEffect, useMemo } from 'react';
import {
  View,
  Text,
  StyleSheet,
  FlatList,
  TouchableOpacity,
  Image,
  ActivityIndicator,
  Dimensions,
} from 'react-native';
import { createThemeStyles } from '@/theme';
import Colors from '@/constants/Colors';
import { getMockGamesByCategory } from '@/services/mockHomeService';
import type { Game } from '@/types/home';

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

/**
 * 创建主题样式
 */
const styles = createThemeStyles((colors) => ({
  container: {
    flex: 1,
    backgroundColor: colors.background,
    paddingHorizontal: 12,
    paddingVertical: 12,
  },
  gameGrid: {
    paddingBottom: 20,
  },
  gameCard: {
    flex: 1,
    margin: 6,
    borderRadius: 12,
    overflow: 'hidden',
    backgroundColor: colors.card,
    elevation: 3,
    shadowColor: colors.cardShadow,
    shadowOffset: { width: 0, height: 3 },
    shadowOpacity: 0.15,
    shadowRadius: 6,
  },
  gameCardPressed: {
    opacity: 0.8,
  },
  gameImage: {
    width: '100%',
    height: 140,
    backgroundColor: colors.backgroundSecondary,
    justifyContent: 'center',
    alignItems: 'center',
  },
  gameIcon: {
    fontSize: 48,
  },
  gameInfo: {
    padding: 10,
  },
  gameName: {
    fontSize: 13,
    fontWeight: '600',
    color: colors.text,
    marginBottom: 6,
  },
  gameButton: {
    backgroundColor: colors.primary,
    paddingVertical: 8,
    borderRadius: 6,
    alignItems: 'center',
    marginTop: 6,
  },
  gameButtonText: {
    color: '#FFFFFF',
    fontSize: 12,
    fontWeight: '600',
  },
  emptyContainer: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    paddingVertical: 40,
  },
  emptyText: {
    fontSize: 14,
    color: colors.textSecondary,
    marginTop: 12,
  },
  loadingContainer: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
}));

interface LobbyProps {
  theme: 'light' | 'dark';
  games?: Game[];
  selectedCategory?: number;
  onGamePress?: (game: Game) => void;
  topHeight?: number;
}

/**
 * 游戏大厅组件
 */
export default function Lobby({
  theme,
  games: propGames,
  selectedCategory = 0,
  onGamePress,
  topHeight = 0,
}: LobbyProps) {
  const s = styles[theme];
  const [games, setGames] = useState<Game[]>(propGames || []);
  const [loading, setLoading] = useState(true);

  // 加载游戏数据
  useEffect(() => {
    if (propGames && propGames.length > 0) {
      setGames(propGames);
      setLoading(false);
      return;
    }

    const loadGames = async () => {
      try {
        setLoading(true);
        // const response = await getGames(selectedCategory);
        // setGames(response.games.length > 0 ? response.games : getMockGamesByCategory(selectedCategory));
      } catch (error) {
        console.error('加载游戏失败:', error);
        setGames(getMockGamesByCategory(selectedCategory));
      } finally {
        setLoading(false);
      }
    };
    loadGames();
  }, [propGames, selectedCategory]);

  const renderGameCard = ({ item }: { item: Game }) => (
    <TouchableOpacity
      style={s.gameCard}
      activeOpacity={0.7}
      onPress={() => onGamePress?.(item)}
    >
      <View style={s.gameImage}>
        {item.icon ? (
          <Image
            source={{ uri: item.icon }}
            style={{ width: '100%', height: '100%' }}
            resizeMode="cover"
          />
        ) : (
          <Text style={s.gameIcon}>🎮</Text>
        )}
      </View>
      <View style={s.gameInfo}>
        <Text style={s.gameName} numberOfLines={2}>
          {item.play_up_name}
          {item.play_cname ? ` - ${item.play_cname}` : ''}
        </Text>
        <TouchableOpacity
          style={s.gameButton}
          onPress={() => onGamePress?.(item)}
        >
          <Text style={s.gameButtonText}>进入游戏</Text>
        </TouchableOpacity>
      </View>
    </TouchableOpacity>
  );

  if (loading) {
    return (
      <View style={s.loadingContainer}>
        <ActivityIndicator size="large" color={Colors[theme].primary} />
      </View>
    );
  }

  if (games.length === 0) {
    return (
      <View style={s.emptyContainer}>
        <Text style={{ fontSize: 40 }}>🎮</Text>
        <Text style={s.emptyText}>暂无游戏</Text>
      </View>
    );
  }

  return (
    <View style={s.container}>
      <FlatList
        data={games}
        renderItem={renderGameCard}
        keyExtractor={(item) => item.id}
        numColumns={2}
        scrollEnabled={false}
        contentContainerStyle={s.gameGrid}
      />
    </View>
  );
}