@{
    ViewData["Title"] = "客户端消息队列";
    var clientName = ViewBag.ClientName as string ?? "TestClient";
}

<div class="container-fluid">
    <div class="row">
        <div class="col-12">
            <div class="card">
                <div class="card-header">
                    <h3 class="card-title">客户端消息队列 - @clientName</h3>
                    <div class="card-tools">
                        <button type="button" class="btn btn-primary btn-sm" onclick="refreshMessages()">
                            <i class="fas fa-sync-alt"></i> 刷新
                        </button>
                        <a href="@Url.Action("TestClientConfig", "Home")" class="btn btn-info btn-sm">
                            <i class="fas fa-cog"></i> 配置
                        </a>
                    </div>
                </div>
                <div class="card-body">
                    <div class="row">
                        <div class="col-md-6">
                            <div class="card">
                                <div class="card-header">
                                    <h5 class="card-title">
                                        <i class="fas fa-paper-plane text-success"></i> 发送消息
                                        <span class="badge badge-primary" id="sentCount">0</span>
                                    </h5>
                                </div>
                                <div class="card-body" style="max-height: 600px; overflow-y: auto;">
                                    <div id="sentMessages">
                                        <div class="text-muted text-center">
                                            <i class="fas fa-info-circle"></i> 暂无发送消息
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="card">
                                <div class="card-header">
                                    <h5 class="card-title">
                                        <i class="fas fa-download text-info"></i> 接收消息
                                        <span class="badge badge-info" id="receivedCount">0</span>
                                    </h5>
                                </div>
                                <div class="card-body" style="max-height: 600px; overflow-y: auto;">
                                    <div id="receivedMessages">
                                        <div class="text-muted text-center">
                                            <i class="fas fa-info-circle"></i> 暂无接收消息
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

@section Scripts {
    <script>
        const clientName = '@clientName';
        const MAX_MESSAGES = 500; // 每个列表最多显示500条消息
        let sentIndex = 0;
        let receivedIndex = 0;
        let updateInterval;

        $(document).ready(function() {
            // 立即加载一次，然后每秒请求增量更新
            loadInitialMessages();
            updateInterval = setInterval(loadIncrementalMessages, 1000); // 1秒更新一次
        });
        
        // 首次加载
        function loadInitialMessages() {
            // 清空现有内容
            $('#sentMessages').empty();
            $('#receivedMessages').empty();
            sentIndex = 0;
            receivedIndex = 0;
            
            // 加载所有消息
            loadMessages(true);
        }

        // 增量加载
        function loadIncrementalMessages() {
            loadMessages(false);
        }

        function loadMessages(isInitial) {
            $.ajax({
                url: `/api/websocket/clients/${encodeURIComponent(clientName)}/messages?sentStartIndex=${sentIndex}&receivedStartIndex=${receivedIndex}`,
                type: 'GET',
                success: function(data) {
                    updateMessageList('sent', data.newSentMessages, data.totalSentCount, isInitial);
                    updateMessageList('received', data.newReceivedMessages, data.totalReceivedCount, isInitial);

                    // 更新下一次请求的起始索引
                    sentIndex = data.totalSentCount;
                    receivedIndex = data.totalReceivedCount;
                },
                error: handleAjaxError
            });
        }
        
        function updateMessageList(type, newMessages, totalCount, isInitial) {
            if (isInitial && newMessages.length === 0) {
                 $(`#${type}Messages`).html('<div class="text-muted text-center"><i class="fas fa-info-circle"></i> 暂无消息</div>');
            }
        
            if (!newMessages || newMessages.length === 0) {
                $(`#${type}Count`).text(totalCount);
                return;
            }

            const container = $(`#${type}Messages`);
            const fragment = $(document.createDocumentFragment());
            
            // 如果是首次加载，先移除"暂无消息"的提示
            if (isInitial) {
                container.empty();
            }

            let currentIndex = (type === 'sent' ? sentIndex : receivedIndex);
            newMessages.forEach(function(message) {
                const card = createMessageCard(message, currentIndex, type);
                fragment.append(card);
                currentIndex++;
            });

            container.append(fragment);
            
            // 数量限制
            const messageCards = container.children('.card');
            if (messageCards.length > MAX_MESSAGES) {
                messageCards.slice(0, messageCards.length - MAX_MESSAGES).remove();
            }
            
            $(`#${type}Count`).text(totalCount);
            
            // 高亮新添加的代码
            container.find('pre code').not('.hljs').each(function() {
                if (typeof hljs !== 'undefined') {
                    hljs.highlightElement(this);
                }
            });
        }
        
        function handleAjaxError(xhr) {
             if (xhr.status !== 404) { // 忽略404，因为它可能是客户端未连接的正常状态
                console.error("加载消息失败:", xhr.responseText);
             }
        }

        function createMessageCard(message, index, type) {
            const timestamp = new Date().toLocaleTimeString();
            const messageType = type === 'sent' ? '发送' : '接收';
            const bgClass = type === 'sent' ? 'border-success' : 'border-info';
            const iconClass = type === 'sent' ? 'fas fa-paper-plane text-success' : 'fas fa-download text-info';

            const cardHtml = `
                <div class="card mb-2 ${bgClass}">
                    <div class="card-header py-2">
                        <small class="text-muted">
                            <i class="${iconClass}"></i> ${messageType} #${index + 1} - ${timestamp}
                        </small>
                        <button class="btn btn-sm btn-outline-secondary float-right py-0" onclick="toggleMessage(this)">
                            <i class="fas fa-chevron-down"></i>
                        </button>
                    </div>
                    <div class="card-body py-2" style="display: none;">
                        <pre><code class="json">${escapeHtml(formatJson(message))}</code></pre>
                    </div>
                </div>
            `;
            return $(cardHtml); // 返回jQuery对象
        }

        function toggleMessage(button) {
            $(button).closest('.card').find('.card-body').slideToggle('fast');
            $(button).find('i').toggleClass('fa-chevron-down fa-chevron-up');
        }

        function formatJson(jsonString) {
            try {
                var obj = JSON.parse(jsonString);
                return JSON.stringify(obj, null, 2);
            } catch (e) {
                return jsonString;
            }
        }
        
        function escapeHtml(text) {
          return text
              .replace(/&/g, "&amp;")
              .replace(/</g, "&lt;")
              .replace(/>/g, "&gt;")
              .replace(/"/g, "&quot;")
              .replace(/'/g, "&#039;");
        }

        function refreshMessages() {
            // 停止自动更新，手动刷新，然后重新开始
            clearInterval(updateInterval);
            loadInitialMessages();
            updateInterval = setInterval(loadIncrementalMessages, 1000);
        }

        // 页面卸载时清除定时器
        $(window).on('beforeunload', function() {
            if (updateInterval) {
                clearInterval(updateInterval);
            }
        });
    </script>

    <!-- 添加代码高亮支持 -->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/styles/github.min.css">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/highlight.min.js"></script>
}