// src/app/dashboard/page.tsx
'use client';
import { useState, useEffect } from 'react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import Link from 'next/link';
import Canvas2DSkinPreview from '@/components/skins/Canvas2DSkinPreview';
import { TextureInfo, TextureType, getUserTextures, getUserFavorites, addFavorite, removeFavorite, checkFavoriteStatus } from '@/lib/api/skins';

export default function Dashboard() {
    // 由于这是客户端组件，我们不能在这里使用getServerSession
    // 在实际应用中，你应该使用useSession钩子或在服务器端获取会话
    // 这里我们模拟一个已登录的状态
    const session = { user: { id: 'test_user_1', name: '测试玩家', email: 'test@test.com' } };
    
    // 安全地获取用户ID
    const userId = session?.user?.id || 'unknown';
    
    // 状态管理
    const [searchTerm, setSearchTerm] = useState('');
    const [activeCategory, setActiveCategory] = useState('all');
    const [skins, setSkins] = useState<TextureInfo[]>([]);
    const [favorites, setFavorites] = useState<any[]>([]);
    const [loading, setLoading] = useState(true);
    const [error, setError] = useState<string | null>(null);
    
    // 加载用户皮肤
    useEffect(() => {
        loadUserSkins();
    }, []);
    
    const loadUserSkins = async () => {
        setLoading(true);
        setError(null);
        try {
            // 获取用户皮肤列表
            const response = await getUserTextures({ type: TextureType.SKIN, page: 1, pageSize: 20 });
            setSkins(response.textures);
            
            // 获取用户收藏列表
            const favResponse = await getUserFavorites({ page: 1, pageSize: 20 });
            setFavorites(favResponse.textures);
        } catch (err) {
            console.error('加载皮肤失败:', err);
            setError('无法加载皮肤，请稍后重试');
        } finally {
            setLoading(false);
        }
    };
    
    const handleFavoriteToggle = async (textureId: number) => {
        try {
            // 检查当前收藏状态
            const isCurrentlyFavorite = await checkFavoriteStatus(textureId);
            
            if (isCurrentlyFavorite) {
                // 取消收藏
                await removeFavorite(textureId);
                // 更新本地状态
                setFavorites(favorites.filter(fav => fav.texture.id !== textureId));
            } else {
                // 添加收藏
                await addFavorite(textureId);
                // 获取更新后的收藏列表
                const favResponse = await getUserFavorites({ page: 1, pageSize: 20 });
                setFavorites(favResponse.textures);
            }
        } catch (err) {
            console.error('操作收藏失败:', err);
            alert('操作失败，请稍后重试');
        }
    };
    
    // 根据搜索词和分类过滤皮肤
    const filteredSkins = skins.filter(skin => 
        skin.id.toString().includes(searchTerm.toLowerCase())
    );

    return (
        <div className="min-h-screen bg-gradient-to-br from-emerald-50 to-teal-100 dark:from-gray-900 dark:to-gray-800 relative overflow-hidden text-gray-900 dark:text-gray-100">
            {/* 背景装饰元素 - 渐变模糊效果 */}
            <div className="absolute inset-0 overflow-hidden pointer-events-none">
                <div className="absolute -top-20 -right-20 w-80 h-80 bg-emerald-400/20 rounded-full blur-3xl"></div>
                <div className="absolute -bottom-20 -left-20 w-96 h-96 bg-teal-500/20 rounded-full blur-3xl"></div>
                <div className="absolute top-1/3 left-1/4 w-64 h-64 bg-emerald-300/10 rounded-full blur-3xl"></div>
            </div>
            
            {/* 主要内容区域 */}
            <main className="container mx-auto px-4 py-12 relative z-10">
                {/* 页面标题和操作按钮 */}
                <div className="flex flex-col md:flex-row justify-between items-start md:items-center mb-10 gap-4">
                    <div>
                        <h1 className="text-3xl font-bold mb-2 text-gray-800 dark:text-white">我的皮肤库</h1>
                        <p className="text-gray-600 dark:text-gray-400">管理和分享你的Minecraft皮肤</p>
                    </div>
                    
                    <Button asChild className="bg-emerald-600 hover:bg-emerald-700 text-white transition-all duration-300 transform hover:-translate-y-1 shadow-md hover:shadow-lg">
                        <Link href="/skins/upload">
                            <span className="mr-2">📤</span>上传新皮肤
                        </Link>
                    </Button>
                </div>
                
                {/* 搜索栏 */}
                <div className="mb-8 max-w-4xl mx-auto">
                    <div className="relative">
                        <Input
                            type="text"
                            placeholder="搜索你的皮肤..."
                            className="pl-10 pr-4 py-2 w-full border-emerald-200 dark:border-emerald-900/30 focus:border-emerald-500 dark:focus:border-emerald-400 rounded-xl shadow-sm transition-all bg-white/95 dark:bg-gray-800/95 backdrop-blur-sm"
                            value={searchTerm}
                            onChange={(e) => setSearchTerm(e.target.value)}
                        />
                        <div className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400">
                            🔍
                        </div>
                    </div>
                </div>
                
                {/* 皮肤分类标签 */}
                <div className="flex overflow-x-auto gap-3 pb-4 mb-8 scrollbar-hide max-w-4xl mx-auto">
                    <Button 
                        variant={activeCategory === 'all' ? 'default' : 'ghost'} 
                        className={`rounded-full ${activeCategory === 'all' ? 'bg-emerald-600 hover:bg-emerald-700 text-white shadow-md' : 'hover:text-emerald-600 dark:hover:text-emerald-400'} transition-all`}
                        onClick={() => setActiveCategory('all')}
                    >
                        全部
                    </Button>
                    <Button 
                        variant={activeCategory === 'recent' ? 'default' : 'ghost'} 
                        className={`rounded-full ${activeCategory === 'recent' ? 'bg-emerald-600 hover:bg-emerald-700 text-white shadow-md' : 'hover:text-emerald-600 dark:hover:text-emerald-400'} transition-all`}
                        onClick={() => setActiveCategory('recent')}
                    >
                        最近上传
                    </Button>
                    <Button 
                        variant={activeCategory === 'popular' ? 'default' : 'ghost'} 
                        className={`rounded-full ${activeCategory === 'popular' ? 'bg-emerald-600 hover:bg-emerald-700 text-white shadow-md' : 'hover:text-emerald-600 dark:hover:text-emerald-400'} transition-all`}
                        onClick={() => setActiveCategory('popular')}
                    >
                        最受欢迎
                    </Button>
                    <Button 
                        variant={activeCategory === 'favorites' ? 'default' : 'ghost'} 
                        className={`rounded-full ${activeCategory === 'favorites' ? 'bg-emerald-600 hover:bg-emerald-700 text-white shadow-md' : 'hover:text-emerald-600 dark:hover:text-emerald-400'} transition-all`}
                        onClick={() => setActiveCategory('favorites')}
                    >
                        我的收藏
                    </Button>
                </div>
                
                {/* 皮肤网格 */}
                <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 lg:grid-cols-4 gap-6 max-w-6xl mx-auto">
                    {loading ? (
                        // 加载状态
                        Array.from({ length: 6 }).map((_, index) => (
                            <Card key={index} className="overflow-hidden border border-emerald-200 dark:border-emerald-900/30 rounded-2xl hover:shadow-xl transition-all duration-300 transform hover:-translate-y-1 bg-white/95 dark:bg-gray-800/95 backdrop-blur-sm">
                                <div className="aspect-square bg-gray-200 dark:bg-gray-700 animate-pulse"></div>
                                <CardContent className="p-5">
                                    <div className="h-6 bg-gray-300 dark:bg-gray-600 rounded w-2/3 mb-2 animate-pulse"></div>
                                    <div className="h-4 bg-gray-300 dark:bg-gray-600 rounded w-1/2 mb-4 animate-pulse"></div>
                                    <div className="flex gap-2">
                                        <div className="h-8 bg-gray-300 dark:bg-gray-600 rounded w-1/3 animate-pulse"></div>
                                        <div className="h-8 bg-gray-300 dark:bg-gray-600 rounded w-1/3 animate-pulse"></div>
                                    </div>
                                </CardContent>
                            </Card>
                        ))
                    ) : error ? (
                        // 错误状态
                        <div className="col-span-full text-center py-12">
                            <p className="text-red-500 mb-4">{error}</p>
                            <Button onClick={loadUserSkins}>重试</Button>
                        </div>
                    ) : filteredSkins.length === 0 ? (
                        // 空状态
                        <div className="col-span-full text-center py-12">
                            <p className="text-gray-500 dark:text-gray-400 mb-4">你还没有上传任何皮肤</p>
                            <Button asChild>
                                <Link href="/skins/upload">立即上传</Link>
                            </Button>
                        </div>
                    ) : (
                        // 正常显示皮肤列表
                        filteredSkins.map((skin) => (
                            <Card key={skin.id} className="overflow-hidden border border-emerald-200 dark:border-emerald-900/30 rounded-2xl hover:shadow-xl transition-all duration-300 transform hover:-translate-y-1 bg-white/95 dark:bg-gray-800/95 backdrop-blur-sm">
                            <div className="aspect-square bg-gray-100/95 dark:bg-gray-900/95 flex items-center justify-center p-4 relative overflow-hidden group">
                                <div className="absolute inset-0 bg-gradient-to-br from-emerald-50/50 to-teal-50/50 dark:from-emerald-900/10 dark:to-teal-900/10 opacity-0 group-hover:opacity-100 transition-opacity duration-300"></div>
                                <Canvas2DSkinPreview 
                                    skinUrl={skin.url || `/test-skin.png`} 
                                    size={128} 
                                    className="max-w-full max-h-full relative z-10 transition-transform duration-500 group-hover:scale-110" 
                                />
                            </div>
                            <CardContent className="p-5">
                                <div className="flex justify-between items-start mb-2">
                                    <h3 className="font-semibold text-lg text-gray-800 dark:text-white truncate group-hover:text-emerald-600 dark:group-hover:text-emerald-400 transition-colors">皮肤 #{skin.id}</h3>
                                    <Button 
                                        variant="ghost" 
                                        size="icon" 
                                        className="h-8 w-8 text-gray-500 hover:text-rose-500 dark:hover:text-rose-400 rounded-full"
                                        onClick={(e) => {
                                            e.stopPropagation();
                                            handleFavoriteToggle(skin.id);
                                        }}
                                    >
                                        ❤️
                                    </Button>
                                </div>
                                <p className="text-sm text-gray-500 dark:text-gray-400 mb-4">上传于 {new Date(skin.createdAt).toLocaleDateString()}</p>
                                <div className="flex gap-2">
                                    <Button size="sm" variant="ghost" className="text-xs flex-1 border border-emerald-200 dark:border-emerald-900/30 hover:bg-emerald-50 dark:hover:bg-emerald-900/20 rounded-lg">
                                        编辑
                                    </Button>
                                    <Button size="sm" variant="ghost" className="text-xs flex-1 border border-emerald-200 dark:border-emerald-900/30 hover:bg-emerald-50 dark:hover:bg-emerald-900/20 rounded-lg">
                                        分享
                                    </Button>
                                    <Button size="sm" variant="ghost" className="text-xs flex-1 border border-emerald-200 dark:border-emerald-900/30 hover:bg-emerald-50 dark:hover:bg-emerald-900/20 rounded-lg">
                                        下载
                                    </Button>
                                </div>
                            </CardContent>
                        </Card>
                        ))
                    )}
                </div>
                
                {/* 空状态 */}
                {filteredSkins.length === 0 && (
                    <div className="text-center py-16 max-w-4xl mx-auto">
                        <Card className="border border-emerald-200 dark:border-emerald-900/30 rounded-2xl overflow-hidden bg-white/95 dark:bg-gray-800/95 backdrop-blur-sm shadow-xl">
                            <div className="absolute top-0 left-0 w-full h-1 bg-gradient-to-r from-emerald-500 to-teal-500"></div>
                            <CardContent className="p-8">
                                <div className="text-6xl mb-4">📦</div>
                                <h3 className="text-xl font-semibold mb-2 text-gray-800 dark:text-white">还没有皮肤</h3>
                                <p className="text-gray-600 dark:text-gray-400 mb-6 max-w-md mx-auto">
                                    上传你的第一个皮肤，开始你的Minecraft皮肤收藏之旅
                                </p>
                                <Button asChild className="bg-emerald-600 hover:bg-emerald-700 text-white transition-all duration-300 transform hover:-translate-y-1 shadow-md hover:shadow-lg">
                                    <Link href="/skins/upload">
                                        <span className="mr-2">📤</span>上传第一个皮肤
                                    </Link>
                                </Button>
                            </CardContent>
                        </Card>
                    </div>
                )}
            </main>
            
            {/* 页脚 */}
            <footer className="bg-gray-900/80 backdrop-blur-md text-gray-300 py-8 mt-16 border-t border-gray-800">
                <div className="container mx-auto px-4 text-center relative z-10">
                    <p className="mb-2">我的世界皮肤库 - 你的Minecraft皮肤分享平台</p>
                    <p className="text-sm text-gray-400">© {new Date().getFullYear()} 版权所有</p>
                </div>
            </footer>
        </div>
    );
}