{{define "content"}}
<!-- 加载屏幕 -->
<div id="loadingScreen" class="fixed inset-0 bg-white z-50 flex items-center justify-center">
    <div class="text-center">
        <div class="w-16 h-16 border-4 border-blue-200 border-t-blue-500 rounded-full animate-spin mx-auto mb-4"></div>
        <p class="text-gray-600">正在加载...</p>
    </div>
</div>

<<!-- 固定的Header -->
<div class="fixed top-0 left-0 right-0 bg-white/95 backdrop-blur-sm border-b border-gray-200 z-50">
    <div class="container mx-auto px-4 py-4">
        <div class="text-center">
            <h1 class="text-2xl font-bold text-gray-900 mb-1">🔗 P2P文件传输</h1>
            <p class="text-gray-600 text-sm">安全快速的点对点文件传输</p>
        </div>
    </div>
</div>

<div class="min-h-screen bg-gray-50 pt-20" style="display: none;" id="mainContent">
    <div class="container mx-auto px-4 py-6">
        <div class="max-w-6xl mx-auto">
            <!-- 主功能区域 - 标签页布局 -->

            <!-- 主功能区域 - 标签页布局 -->
            <div class="max-w-4xl mx-auto bg-white rounded-2xl shadow-sm border border-gray-100 overflow-hidden">
                <!-- 标签页导航 -->
                <div class="flex border-b border-gray-200">
                    <button id="sendTab" onclick="switchTab('send')" 
                            class="tab-button active flex-1 px-6 py-4 text-center font-medium transition-all duration-200 border-b-2 border-blue-500 bg-blue-50 text-blue-600">
                        <div class="flex items-center justify-center">
                            <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"></path>
                            </svg>
                            发送文件
                        </div>
                    </button>
                    <button id="receiveTab" onclick="switchTab('receive')" 
                            class="tab-button flex-1 px-6 py-4 text-center font-medium transition-all duration-200 border-b-2 border-transparent text-gray-600 hover:text-gray-800 hover:bg-gray-50">
                        <div class="flex items-center justify-center">
                            <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M9 11l3 3m0 0l3-3m-3 3V8"></path>
                            </svg>
                            接收文件
                        </div>
                    </button>
                </div>
                
                <!-- 发送文件内容区域 -->
                <div id="sendContent" class="tab-content active p-6">
                    <div class="mb-6">
                        <h3 class="text-lg font-semibold text-gray-800 mb-2 flex items-center">
                            <svg class="w-5 h-5 mr-2 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"></path>
                            </svg>
                            选择文件并生成取件码
                        </h3>
                        <p class="text-gray-600 text-sm">选择要发送的文件，系统会生成取件码供接收方使用</p>
                    </div>
                    
                    <div class="p-6">
                        <!-- 文件选择区域 - 简化设计 -->
                        <div id="fileDropZone" class="border-2 border-dashed border-gray-200 rounded-xl p-8 text-center hover:border-blue-300 hover:bg-blue-50 transition-all duration-200 cursor-pointer group" 
                             onclick="handleDropZoneClick(event)">
                            <div class="text-4xl mb-3 group-hover:scale-110 transition-transform duration-200">�</div>
                            <h3 class="text-lg font-medium text-gray-700 mb-2">选择文件</h3>
                            <p class="text-sm text-gray-500">点击或拖拽文件到此处</p>
                            <p class="text-xs text-gray-400 mt-1">支持多文件选择</p>
                            <input type="file" id="fileInput" multiple class="hidden">
                        </div>

                        <!-- 文件列表区域 -->
                        <div id="fileListArea" class="hidden">
                            <div class="border-2 border-dashed border-gray-200 rounded-xl p-4 cursor-pointer hover:border-blue-300 hover:bg-blue-50 transition-all duration-200" 
                                 onclick="handleDropZoneClick(event)">
                                <div class="flex items-center justify-between mb-3">
                                    <h4 class="font-medium text-gray-700">已选择文件</h4>
                                    <div class="flex items-center gap-2">
                                        <span id="fileCount" class="text-sm text-gray-500 bg-gray-100 px-2 py-1 rounded-full"></span>
                                        <button onclick="addMoreFiles()" class="text-sm text-blue-600 hover:text-blue-800 px-2 py-1 rounded">
                                            + 添加更多
                                        </button>
                                    </div>
                                </div>
                                <div id="filesList" class="space-y-1 max-h-40 overflow-y-auto mb-4"></div>
                                <div class="text-center">
                                    <button id="generateCodeBtn" onclick="generatePickupCode()" 
                                            class="bg-blue-500 hover:bg-blue-600 text-white py-2 px-4 rounded-lg text-sm font-medium transition-colors duration-200 shadow-sm hover:shadow-md">
                                        生成取件码
                                    </button>
                                </div>
                            </div>
                        </div>

                        <!-- 取件码显示 - 更紧凑的设计 -->
                        <div id="pickupCodeSection" class="mt-4 hidden">
                            <div class="bg-gradient-to-r from-green-50 to-emerald-50 border border-green-200 rounded-xl p-4 text-center">
                                <div class="flex items-center justify-center mb-3">
                                    <svg class="w-5 h-5 text-green-600 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                                    </svg>
                                    <h4 class="font-semibold text-green-800 text-sm">取件码和链接</h4>
                                </div>
                                
                                <div class="bg-white border border-green-200 rounded-lg p-3 mb-3">
                                    <div class="text-2xl font-mono font-bold text-green-600 tracking-wider select-all" id="pickupCodeDisplay" onclick="event.stopPropagation(); copyPickupCode();"></div>
                                </div>
                                
                                <!-- 特定链接 -->
                                <div class="bg-white border border-green-200 rounded-lg p-2 mb-3">
                                    <div class="text-xs text-gray-600 mb-1">直接取件链接：</div>
                                    <div class="text-xs font-mono text-blue-600 break-all select-all cursor-pointer" id="pickupLinkDisplay" onclick="event.stopPropagation(); copyPickupLink();"></div>
                                </div>
                                
                                <p class="text-green-700 text-xs mb-3">点击取件码或链接可直接复制</p>
                                <div class="grid grid-cols-3 gap-2">
                                    <button onclick="event.stopPropagation(); copyPickupCode()" class="bg-green-500 hover:bg-green-600 text-white py-1.5 px-3 rounded-lg text-xs font-medium transition-colors">
                                        📋 复制码
                                    </button>
                                    <button onclick="event.stopPropagation(); copyPickupLink()" class="bg-blue-500 hover:bg-blue-600 text-white py-1.5 px-3 rounded-lg text-xs font-medium transition-colors">
                                        🔗 复制链接
                                    </button>
                                    <button onclick="event.stopPropagation(); resetSender()" class="bg-gray-500 hover:bg-gray-600 text-white py-1.5 px-3 rounded-lg text-xs font-medium transition-colors">
                                        🔄 重置
                                    </button>
                                </div>
                            </div>
                            
                            <!-- 连接状态 - 简化显示 -->
                            <div id="senderStatus" class="mt-3">
                                <div class="flex items-center justify-center p-2 bg-yellow-50 border border-yellow-200 rounded-lg">
                                    <div class="flex items-center">
                                        <div class="w-2 h-2 bg-yellow-500 rounded-full mr-2 animate-pulse"></div>
                                        <span class="text-yellow-800 text-xs font-medium">等待连接...</span>
                                    </div>
                                </div>
                            </div>
                            
                            <!-- 房间状态 - 折叠式显示 -->
                            <div id="roomStatusSection" class="mt-3 hidden">
                                <details class="bg-blue-50 border border-blue-200 rounded-lg">
                                    <summary class="p-2 cursor-pointer text-blue-800 font-medium text-xs hover:bg-blue-100 rounded-lg">
                                        房间状态 📊
                                    </summary>
                                    <div class="px-2 pb-2">
                                        <div id="roomConnections" class="text-xs text-blue-700 space-y-1">
                                            <div class="flex justify-between">
                                                <span>在线用户:</span>
                                                <span id="onlineCount" class="font-medium">0</span>
                                            </div>
                                            <div class="flex justify-between">
                                                <span>发送方:</span>
                                                <span id="senderCount" class="font-medium">0</span>
                                            </div>
                                            <div class="flex justify-between">
                                                <span>接收方:</span>
                                                <span id="receiverCount" class="font-medium">0</span>
                                            </div>
                                        </div>
                                        <div id="clientsList" class="mt-1 space-y-1"></div>
                                    </div>
                                </details>
                            </div>
                        </div>
                    </div>
                </div>

                <!-- 接收文件内容区域 -->
                <div id="receiveContent" class="tab-content hidden p-6">
                    <div class="mb-6">
                        <h3 class="text-lg font-semibold text-gray-800 mb-2 flex items-center">
                            <svg class="w-5 h-5 mr-2 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M9 11l3 3m0 0l3-3m-3 3V8"></path>
                            </svg>
                            输入取件码获取文件
                        </h3>
                        <p class="text-gray-600 text-sm">输入6位取件码，连接发送方并下载文件</p>
                    </div>

                <!-- 右侧：接收文件 -->
                <div class="bg-white rounded-2xl shadow-sm border border-gray-100 overflow-hidden">
                    <div class="bg-gradient-to-r from-green-500 to-green-600 px-6 py-4">
                        <h2 class="text-xl font-semibold text-white flex items-center">
                            <svg class="w-6 h-6 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M9 11l3 3m0 0l3-3m-3 3V8"></path>
                            </svg>
                            接收文件
                        </h2>
                        <p class="text-green-100 text-sm mt-1">输入取件码，获取文件</p>
                    </div>
                    
                    <div class="p-6">
                        <!-- 取件码输入 - 简化设计 -->
                        <div id="codeInputSection" class="text-center">
                            <div class="max-w-sm mx-auto">
                                <label class="block text-sm font-medium text-gray-700 mb-3">请输入6位取件码</label>
                                <input type="text" id="pickupCodeInput" placeholder="取件码" maxlength="6"
                                       class="w-full px-4 py-4 border-2 border-gray-200 rounded-xl text-center text-2xl font-mono font-bold uppercase focus:outline-none focus:border-green-500 focus:ring-4 focus:ring-green-100 transition-all duration-200">
                                                            <button onclick="joinRoom()" class="w-full mt-4 bg-green-500 hover:bg-green-600 text-white py-2 px-4 rounded-lg text-sm font-medium transition-colors duration-200 shadow-sm hover:shadow-md">
                                🔗 连接获取
                            </button>
                            </div>
                        </div>

                        <!-- 文件列表显示 - 优化布局 -->
                        <div id="receiverFilesSection" class="hidden">
                            <div class="mt-6">
                                <h4 class="font-medium text-gray-700 mb-4 flex items-center">
                                    <svg class="w-5 h-5 mr-2 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"></path>
                                    </svg>
                                    可下载文件
                                </h4>
                                <div id="receiverFilesList" class="space-y-1"></div>
                            </div>
                            
                            <!-- 接收状态 - 简化显示 -->
                            <div id="receiverStatus" class="mt-6">
                                <div class="flex items-center justify-center p-3 bg-green-50 border border-green-200 rounded-lg">
                                    <div class="flex items-center">
                                        <div class="w-2 h-2 bg-green-500 rounded-full mr-2"></div>
                                        <span class="text-green-800 text-sm font-medium">已连接，可下载文件</span>
                                    </div>
                                </div>
                            </div>
                            
                            <!-- 房间状态显示 (接收方) - 折叠式 -->
                            <div id="receiverRoomStatusSection" class="mt-4">
                                <details class="bg-blue-50 border border-blue-200 rounded-lg">
                                    <summary class="p-3 cursor-pointer text-blue-800 font-medium text-sm hover:bg-blue-100 rounded-lg">
                                        房间状态 📊
                                    </summary>
                                    <div class="px-3 pb-3">
                                        <div id="receiverRoomConnections" class="text-xs text-blue-700 space-y-1">
                                            <div class="flex justify-between">
                                                <span>在线用户:</span>
                                                <span id="receiverOnlineCount" class="font-medium">0</span>
                                            </div>
                                            <div class="flex justify-between">
                                                <span>发送方:</span>
                                                <span id="receiverSenderCount" class="font-medium">0</span>
                                            </div>
                                            <div class="flex justify-between">
                                                <span>接收方:</span>
                                                <span id="receiverReceiverCount" class="font-medium">0</span>
                                            </div>
                                        </div>
                                        <div id="receiverClientsList" class="mt-2 space-y-1"></div>
                                    </div>
                                </details>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <!-- 传输进度 - 浮动卡片设计 -->
            <div id="transferProgress" class="hidden">
                <div class="bg-white rounded-2xl shadow-lg border border-gray-100 overflow-hidden">
                    <div class="bg-gradient-to-r from-purple-500 to-purple-600 px-6 py-4">
                        <h3 class="text-xl font-semibold text-white flex items-center">
                            <svg class="w-6 h-6 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z"></path>
                            </svg>
                            传输进度
                        </h3>
                        <p class="text-purple-100 text-sm mt-1">文件传输状态</p>
                    </div>
                    <div class="p-6">
                        <div id="progressList" class="space-y-4"></div>
                    </div>
                </div>
            </div>

            <!-- 底部提示信息 -->
            <div class="mt-8 text-center">
                <div class="inline-flex items-center px-4 py-2 bg-white rounded-full shadow-sm border border-gray-200">
                    <svg class="w-4 h-4 text-green-500 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m5.707-3.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L9 10.586l7.293-7.293a1 1 0 011.414 0z"></path>
                    </svg>
                    <span class="text-sm text-gray-600">点对点传输，安全快速，不经过服务器</span>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- 错误边界处理 -->
<script>
// 标签页切换函数
function switchTab(tab) {
    // 移除所有标签页的活动状态
    document.querySelectorAll('.tab-button').forEach(btn => {
        btn.classList.remove('active', 'border-blue-500', 'bg-blue-50', 'text-blue-600', 'border-green-500', 'bg-green-50', 'text-green-600');
        btn.classList.add('border-transparent', 'text-gray-600');
    });
    
    // 隐藏所有标签页内容
    document.querySelectorAll('.tab-content').forEach(content => {
        content.classList.add('hidden');
        content.classList.remove('active');
    });
    
    // 激活选中的标签页
    if (tab === 'send') {
        const sendTab = document.getElementById('sendTab');
        const sendContent = document.getElementById('sendContent');
        
        sendTab.classList.remove('border-transparent', 'text-gray-600');
        sendTab.classList.add('active', 'border-blue-500', 'bg-blue-50', 'text-blue-600');
        
        sendContent.classList.remove('hidden');
        sendContent.classList.add('active');
    } else if (tab === 'receive') {
        const receiveTab = document.getElementById('receiveTab');
        const receiveContent = document.getElementById('receiveContent');
        
        receiveTab.classList.remove('border-transparent', 'text-gray-600');
        receiveTab.classList.add('active', 'border-green-500', 'bg-green-50', 'text-green-600');
        
        receiveContent.classList.remove('hidden');
        receiveContent.classList.add('active');
    }
}

// 隐藏加载屏幕并显示主内容
window.addEventListener('load', () => {
    setTimeout(() => {
        document.getElementById('loadingScreen').style.display = 'none';
        document.getElementById('mainContent').style.display = 'block';
        document.getElementById('mainContent').classList.add('fade-in-up');
    }, 800);
});

// 全局错误处理
window.addEventListener('error', (event) => {
    console.error('页面错误:', event.error);
    showNotification('页面发生错误，请刷新重试', 'error');
});

// 未处理的Promise拒绝
window.addEventListener('unhandledrejection', (event) => {
    console.error('未处理的Promise拒绝:', event.reason);
    showNotification('操作失败，请重试', 'error');
    event.preventDefault();
});
</script>
{{end}}

{{define "scripts"}}
<!-- P2P文件传输相关脚本 -->
<script src="/static/js/p2p-transfer-new.js"></script>
{{end}}