{% extends "base.html" %}
{% block title %}管理后台 | SCU 选课控制台{% endblock %}
{% block body_class %}admin-theme{% endblock %}
{% block content %}
<section class="dashboard-shell admin-dashboard" data-log-stream-url="{{ url_for('stream_admin_logs', last_id=recent_logs[-1].id if recent_logs else 0) }}" data-status-url="{{ url_for('admin_status') }}">
    <header class="topbar reveal-up">
        <div>
            <span class="eyebrow">Admin Console</span>
            <h1>管理员后台</h1>
            <p>当前管理员：{{ admin_identity.username }}{% if is_super_admin %} · 超级管理员{% endif %}</p>
        </div>
        <form method="post" action="{{ url_for('admin_logout') }}">
            <button type="submit" class="btn btn-ghost">退出后台</button>
        </form>
    </header>

    <section class="metric-grid reveal-up delay-1">
        <article class="metric-card">
            <span>用户数</span>
            <strong id="stat-users">{{ stats.users_count }}</strong>
            <small>已录入的学生账号</small>
        </article>
        <article class="metric-card">
            <span>运行中任务</span>
            <strong id="stat-running">{{ stats.running_count }}</strong>
            <small>排队中：<span id="stat-pending">{{ stats.pending_count }}</span></small>
        </article>
        <article class="metric-card">
            <span>总课程目标</span>
            <strong>{{ stats.courses_count }}</strong>
            <small>管理员可见全部课程号与课序号</small>
        </article>
        <article class="metric-card">
            <span>管理员总数</span>
            <strong>{{ stats.admins_count }}</strong>
            <small>包含 1 位超级管理员</small>
        </article>
    </section>

    <section class="content-grid admin-grid">
        <article class="card reveal-up delay-2">
            <div class="card-head">
                <span class="kicker">调度设置</span>
                <h2>并行数</h2>
                <p>建议根据 Hugging Face Space 的 CPU 与内存情况控制在较低范围。</p>
            </div>
            <form method="post" action="{{ url_for('update_parallel_limit') }}" class="form-grid form-grid-compact">
                <label class="field">
                    <span>当前并行数</span>
                    <input type="number" id="parallel-limit-input" name="parallel_limit" min="1" max="8" value="{{ parallel_limit }}" required>
                </label>
                <button type="submit" class="btn btn-primary">更新并行数</button>
            </form>
        </article>

        <article class="card reveal-up delay-2">
            <div class="card-head">
                <span class="kicker">新增用户</span>
                <h2>手动录入用户信息</h2>
                <p>管理员可以直接创建学生账号，普通用户随后即可用学号和密码登录。</p>
            </div>
            <form method="post" action="{{ url_for('create_user') }}" class="form-grid form-grid-compact">
                <label class="field">
                    <span>学号</span>
                    <input type="text" name="student_id" inputmode="numeric" placeholder="13 位学号" required>
                </label>
                <label class="field">
                    <span>显示名称</span>
                    <input type="text" name="display_name" placeholder="可选备注">
                </label>
                <label class="field span-2">
                    <span>密码</span>
                    <input type="password" name="password" placeholder="教务系统密码" required>
                </label>
                <button type="submit" class="btn btn-secondary">创建用户</button>
            </form>
        </article>

        {% if is_super_admin %}
        <article class="card reveal-up delay-2">
            <div class="card-head">
                <span class="kicker">管理员管理</span>
                <h2>新增管理员</h2>
                <p>只有超级管理员可以继续创建普通管理员。</p>
            </div>
            <form method="post" action="{{ url_for('create_admin') }}" class="form-grid form-grid-compact">
                <label class="field">
                    <span>管理员账号</span>
                    <input type="text" name="username" placeholder="输入管理员账号" required>
                </label>
                <label class="field">
                    <span>管理员密码</span>
                    <input type="password" name="password" placeholder="输入管理员密码" required>
                </label>
                <button type="submit" class="btn btn-ghost">创建管理员</button>
            </form>
            <div class="chip-row">
                <span class="chip highlight">超级管理员：{{ admin_identity.username }}</span>
                {% for admin in admins %}
                    <span class="chip">{{ admin.username }}</span>
                {% endfor %}
            </div>
        </article>
        {% endif %}

        <article class="card reveal-up delay-3 span-2">
            <div class="card-head split">
                <div>
                    <span class="kicker">任务总览</span>
                    <h2>最近任务</h2>
                    <p>用于快速确认任务是否正在排队、执行、停止或失败。</p>
                </div>
                <span class="status-pill status-running">实时刷新</span>
            </div>
            <div class="course-table-wrap">
                <table class="data-table">
                    <thead>
                        <tr>
                            <th>任务</th>
                            <th>学号</th>
                            <th>状态</th>
                            <th>触发者</th>
                            <th>更新时间</th>
                        </tr>
                    </thead>
                    <tbody>
                        {% if recent_tasks %}
                            {% for task in recent_tasks %}
                                <tr>
                                    <td>#{{ task.id }}</td>
                                    <td>{{ task.student_id }}</td>
                                    <td><span class="status-pill status-{{ task.status }}">{{ task_labels.get(task.status, task.status) }}</span></td>
                                    <td>{{ task.requested_by_role }}:{{ task.requested_by }}</td>
                                    <td>{{ task.updated_at }}</td>
                                </tr>
                            {% endfor %}
                        {% else %}
                            <tr>
                                <td colspan="5" class="empty-cell">还没有任务记录。</td>
                            </tr>
                        {% endif %}
                    </tbody>
                </table>
            </div>
        </article>

        <article class="card reveal-up delay-3 span-2">
            <div class="card-head split">
                <div>
                    <span class="kicker">全局日志</span>
                    <h2>所有用户的运行日志</h2>
                    <p>日志会持续流入，便于管理员确认浏览器登录、查课、提交结果与错误信息。</p>
                </div>
                <span class="live-dot">LIVE</span>
            </div>
            <div class="log-console" id="log-console">
                {% if recent_logs %}
                    {% for log in recent_logs %}
                        <div class="log-line level-{{ log.level|lower }}">
                            <span class="log-meta">{{ log.created_at }} · {{ log.student_id or 'system' }} · {{ log.scope }} · {{ log.level }}</span>
                            <span>{{ log.message }}</span>
                        </div>
                    {% endfor %}
                {% else %}
                    <div class="log-line level-info muted">暂无日志，用户启动任务后这里会自动刷新。</div>
                {% endif %}
            </div>
        </article>

        <article class="card reveal-up delay-4 span-2">
            <div class="card-head">
                <span class="kicker">用户清单</span>
                <h2>所有用户与课程详情</h2>
                <p>可以直接修改用户信息、增减课程，或代替用户启动和停止任务。</p>
            </div>
            <div class="user-card-grid">
                {% for user in users %}
                    <section class="user-card">
                        <div class="user-card-head">
                            <div>
                                <h3>{{ user.display_name or user.student_id }}</h3>
                                <p>{{ user.student_id }}</p>
                            </div>
                            <span class="status-pill status-{{ user.latest_task.status if user.latest_task else 'idle' }}">
                                {{ task_labels.get(user.latest_task.status, '未启动') if user.latest_task else '未启动' }}
                            </span>
                        </div>

                        <div class="chip-row tight">
                            <span class="chip {% if user.is_active %}highlight{% endif %}">{{ '启用中' if user.is_active else '已禁用' }}</span>
                            <span class="chip">课程 {{ user.course_count }}</span>
                            <span class="chip">最近任务 {{ user.latest_task.id if user.latest_task else '--' }}</span>
                        </div>

                        <form method="post" action="{{ url_for('update_user', user_id=user.id) }}" class="form-grid form-grid-compact slim-form">
                            <label class="field span-2">
                                <span>显示名称</span>
                                <input type="text" name="display_name" value="{{ user.display_name }}" placeholder="备注名称">
                            </label>
                            <label class="field span-2">
                                <span>重置密码</span>
                                <input type="password" name="password" placeholder="留空表示不修改">
                            </label>
                            <button type="submit" class="btn btn-ghost">保存用户</button>
                        </form>

                        <div class="button-row wrap-row">
                            <form method="post" action="{{ url_for('toggle_user', user_id=user.id) }}">
                                <button type="submit" class="btn btn-ghost {% if not user.is_active %}danger{% endif %}">{{ '禁用' if user.is_active else '启用' }}</button>
                            </form>
                            <form method="post" action="{{ url_for('admin_start_user_task', user_id=user.id) }}">
                                <button type="submit" class="btn btn-primary">代启动任务</button>
                            </form>
                            <form method="post" action="{{ url_for('admin_stop_user_task', user_id=user.id) }}">
                                <button type="submit" class="btn btn-ghost danger">代停止任务</button>
                            </form>
                        </div>

                        <form method="post" action="{{ url_for('admin_add_course', user_id=user.id) }}" class="form-grid form-grid-compact slim-form">
                            <label class="field">
                                <span>类型</span>
                                <select name="category">
                                    <option value="free">自由选课</option>
                                    <option value="plan">方案选课</option>
                                </select>
                            </label>
                            <label class="field">
                                <span>课程号</span>
                                <input type="text" name="course_id" placeholder="课程号" required>
                            </label>
                            <label class="field">
                                <span>课序号</span>
                                <input type="text" name="course_index" placeholder="01" maxlength="2" required>
                            </label>
                            <button type="submit" class="btn btn-secondary">为该用户加课</button>
                        </form>

                        <div class="course-list">
                            {% if user.courses %}
                                {% for course in user.courses %}
                                    <div class="course-chip-row">
                                        <span>{{ category_labels.get(course.category, course.category) }} · {{ course.course_id }}_{{ course.course_index }}</span>
                                        <form method="post" action="{{ url_for('admin_delete_course', course_target_id=course.id) }}">
                                            <button type="submit" class="inline-action">删除</button>
                                        </form>
                                    </div>
                                {% endfor %}
                            {% else %}
                                <div class="empty-mini">当前没有课程目标。</div>
                            {% endif %}
                        </div>
                    </section>
                {% else %}
                    <div class="empty-state-card">
                        还没有录入任何用户，请先通过上方表单创建。
                    </div>
                {% endfor %}
            </div>
        </article>
    </section>
</section>
{% endblock %}