{% extends "base.html" %}
{% block title %}Web Chat - GEMINI BALANCER{% endblock %}

{% block content %}
<!-- [核心] 聊天界面的主容器，使用 flex 布局撑满整个可用空间 -->
<div class="w-full h-full flex overflow-hidden rounded-lg border border-border" data-page-id="chat">

    <!-- =================================================================== -->
    <!--       1. 左侧栏: 会话列表                                           -->
    <!-- =================================================================== -->
    <!-- =================================================================== -->
    <!--       1. 左侧栏: 会话列表 (包含新的设置面板)                      -->
    <!-- =================================================================== -->
    <aside class="w-[280px] h-full flex flex-col border-r border-border bg-muted/50 shrink-0">
        <!-- 侧边栏头部 -->
        <div class="p-4 border-b border-border shrink-0">
            <div class="flex items-center justify-between">
                <h2 class="text-xl font-bold tracking-tight">会话</h2>
                <button id="new-session-btn" class="btn btn-ghost btn-icon btn-sm" aria-label="新建会话">
                    <i class="fas fa-plus"></i>
                </button>
            </div>
            <div class="relative mt-4">
                <i class="fas fa-search absolute left-3 top-1/2 -translate-y-1/2 text-muted-foreground"></i>
                <input id="session-search-input" class="input h-9 pl-10" placeholder="搜索会话...">
            </div>
        </div>

        <!-- 会话列表 (可滚动) -->
        <div id="session-list-container" class="flex-grow overflow-y-auto main-content-scroll p-2">
            <!-- Session items will be dynamically inserted here by JavaScript -->
        </div>

        <!-- 设置面板区域: 相对定位上下文 -->
        <div class="shrink-0 p-2 border-t border-border relative">
            
            <!-- 快速设置面板: 绝对定位 -->
            <div id="quick-settings-panel" 
                class="absolute bottom-full left-2 right-2 mb-2 p-3 bg-background border border-border rounded-lg shadow-lg grid grid-rows-[0] transition-all duration-300 ease-in-out overflow-hidden invisible data-[expanded=true]:visible data-[expanded=true]:grid-rows-[1]">
                <div class="min-h-0 space-y-4">
                    <div class="space-y-2"><label class="text-sm font-medium">路由模式</label><div class="btn-group grid grid-cols-2 gap-px rounded-md border border-border overflow-hidden"><button data-group="routing-mode" data-value="smart" class="btn-group-item px-3 py-1.5 text-sm bg-background hover:bg-muted focus:relative data-[active=true]:bg-primary data-[active=true]:text-primary-foreground" data-active="true">智能聚合</button><button data-group="routing-mode" data-value="direct" class="btn-group-item px-3 py-1.5 text-sm bg-background hover:bg-muted focus:relative data-[active=true]:bg-primary data-[active=true]:text-primary-foreground">精准路由</button></div></div>
                    <div id="direct-routing-options" class="hidden space-y-2">
                    <label class="text-sm font-medium">选择群组</label>
                    <div id="group-select-container" class="custom-select-v2">
                        <!-- 1. The trigger button -->
                        <button class="custom-select-trigger btn btn-secondary btn-sm w-full justify-between">
                            <span></span> <!-- Text will be populated by JS -->
                            <i class="fas fa-chevron-down text-xs"></i>
                        </button>
                        <!-- 2. The hidden native select for state management -->
                        <select id="group-select" class="hidden">
                            <option value="group-a">默认群组</option>
                            <option value="group-b">测试群组</option>
                        </select>
                        <!-- 3. The template for the dropdown panel -->
                        <template class="custom-select-panel-template">
                            <div class="custom-select-panel z-50 w-[var(--radix-popper-anchor-width)] bg-background border border-border rounded-md shadow-lg p-1">
                                <!-- Options will be populated by JS -->
                            </div>
                        </template>
                    </div>
                </div>
                    <div class="space-y-2"><label class="text-sm font-medium">接口方式</label><div class="btn-group grid grid-cols-2 gap-px rounded-md border border-border overflow-hidden"><button data-group="api-interface" data-value="gemini" class="btn-group-item px-3 py-1.5 text-sm bg-background hover:bg-muted focus:relative data-[active=true]:bg-primary data-[active=true]:text-primary-foreground" data-active="true">Gemini</button><button data-group-api-interface="api-interface" data-value="openai" class="btn-group-item px-3 py-1.5 text-sm bg-background hover:bg-muted focus:relative data-[active=true]:bg-primary data-[active=true]:text-primary-foreground">OpenAI</button></div></div>
                        <div class="space-y-2">
                        <label class="text-sm font-medium">模型选择</label>
                        <div id="model-select-container" class="custom-select-v2">
                            <button id="model-select-btn" class="custom-select-trigger btn btn-secondary btn-sm w-full justify-between">
                                <span>gemini-1.5-flash</span>
                                <i class="fas fa-chevron-down text-xs"></i>
                            </button>
                            <select id="model-select" class="hidden">
                            <!-- Options to be added later -->
                            </select>
                            <template class="custom-select-panel-template">
                                <div class="custom-select-panel z-50 w-[var(--radix-popper-anchor-width)] bg-background border border-border rounded-md shadow-lg p-1"></div>
                            </template>
                        </div>
                    </div>
                </div>
            </div>

            <!-- 会话参数面板: 绝对定位 -->
            <div id="session-params-panel" 
                class="absolute bottom-full left-2 right-2 mb-2 p-3 bg-background border border-border rounded-lg shadow-lg grid grid-rows-[0] transition-all duration-300 ease-in-out overflow-hidden invisible data-[expanded=true]:visible data-[expanded=true]:grid-rows-[1]">
                <div class="min-h-0 space-y-4">
                    <!-- [MODIFIED] Replaced switches with a pure Tailwind CSS component -->
                    <div class="flex items-center justify-between">
                        <label for="streaming-toggle" class="text-sm font-medium">流式输出</label>
                        <label class="relative inline-flex items-center cursor-pointer">
                        <input type="checkbox" id="streaming-toggle" class="sr-only peer" checked>
                        <div class="w-11 h-6 bg-muted rounded-full peer peer-focus:ring-2 peer-focus:ring-primary/50 peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-0.5 after:left-[2px] after:bg-white after:border-border after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-primary"></div>
                        </label>
                    </div>
                    <div class="flex items-center justify-between">
                        <label for="thinking-toggle" class="text-sm font-medium">模型思考</label>
                        <label class="relative inline-flex items-center cursor-pointer">
                        <input type="checkbox" id="thinking-toggle" class="sr-only peer" checked>
                        <div class="w-11 h-6 bg-muted rounded-full peer peer-focus:ring-2 peer-focus:ring-primary/50 peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-0.5 after:left-[2px] after:bg-white after:border-border after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-primary"></div>
                        </label>
                    </div>
                    <div class="space-y-2">
                        <div class="flex justify-between items-center">
                            <label for="temperature-slider" class="text-sm font-medium">温度</label>
                            <span id="temperature-value" class="text-sm font-mono text-muted-foreground">0.7</span>
                        </div>
                        <input id="temperature-slider" type="range" min="0" max="2" value="0.7" step="0.1" class="slider w-full">
                    </div>
                    <div class="space-y-2">
                        <div class="flex justify-between items-center">
                            <label for="context-slider" class="text-sm font-medium">上下文</label>
                            <span id="context-value" class="text-sm font-mono text-muted-foreground">5k</span>
                        </div>
                        <input id="context-slider" type="range" min="0" max="25" value="5" step="1" class="slider w-full">
                    </div>
                </div>
            </div>
            
            <!-- 底部触发按钮 -->
            <div class="flex items-center justify-center gap-2 mt-2">
                <button id="toggle-quick-settings" class="btn btn-ghost btn-icon data-[active=true]:bg-muted data-[active=true]:text-accent-foreground" title="快速设置"><i class="fas fa-cog"></i></button>
                <button id="toggle-session-params" class="btn btn-ghost btn-icon data-[active=true]:bg-muted data-[active=true]:text-accent-foreground" title="会话参数"><i class="fas fa-sliders-h"></i></button>
            </div>
        </div>
    </aside>

    <!-- =================================================================== -->
    <!--       2. 右侧主区域: 聊天窗口                                       -->
    <!-- =================================================================== -->
    <main class="flex-1 flex flex-col h-full">
        <!-- 聊天窗口头部 -->
        <div class="flex items-center p-4 border-b border-border shrink-0">
            <h3 class="text-lg font-semibold chat-header-title">新会话</h3>
            <div class="ml-auto flex items-center gap-2">
                <button id="clear-session-btn" class="btn btn-ghost btn-icon btn-sm" aria-label="清除会话">
                    <i class="fas fa-eraser"></i>
                </button>
                <button class="btn btn-ghost btn-icon btn-sm" aria-label="更多选项">
                    <i class="fas fa-ellipsis-v"></i>
                </button>
            </div>
        </div>

        <!-- 消息区域 (可滚动) -->
        <div class="flex-grow p-6 overflow-y-auto main-content-scroll" id="chat-scroll-container">
            <div class="space-y-6" id="chat-messages-container">
                <!--fill with js -->
            </div>
        </div>

        <!-- 输入区域 -->
        <div class="p-4 border-t border-border shrink-0 bg-background">
            <form id="message-form" class="relative">
                <textarea id="message-input" placeholder="输入消息..." class="input w-full min-h-14 pr-24 resize-none overflow-y-hidden" rows="1"></textarea>
                
                <div class="absolute bottom-2 right-2 flex items-center gap-2">
                    <button type="button" class="btn btn-ghost btn-icon btn-sm" aria-label="附加文件" title="此功能将在未来版本中提供">
                        <i class="fas fa-paperclip text-muted-foreground/60"></i>
                    </button>
                    <button type="submit" id="send-btn" class="btn btn-primary btn-icon w-9 h-9 shrink-0 rounded-full bg-green-500 hover:bg-green-600 dark:bg-green-600 dark:hover:bg-green-700 disabled:bg-green-500/50">
                        <i class="fas fa-arrow-up text-white dark:text-black"></i>
                    </button>
                </div>
            </form>
        </div>
    </main>
</div>
{% endblock %}

{% block page_scripts %}

{% endblock page_scripts %}