{% extends "base.html" %}

{% block title %}管理员后台{% endblock %}

{% block header_actions %}
  <span class="status-pill status-live">{{ admin.role }} · {{ admin.username }}</span>
  <form method="post" action="{{ url_for('admin_logout') }}">
    <button type="submit" class="button button-ghost">退出后台</button>
  </form>
{% endblock %}

{% block content %}
<section class="hero-card">
  <div class="hero-copy-block">
    <div class="eyebrow">管理员后台</div>
    <h1>统一管理用户、并发调度与全局实时日志。</h1>
    <p class="hero-copy">
      用户提交的课程配置会集中展示在这里。管理员可以手动录入用户信息、代为启动任务，并根据 Hugging Face Space 资源调整并行数。
    </p>
  </div>
  <div class="stat-grid admin-stat-grid">
    <div class="stat-card">
      <span>用户数</span>
      <strong id="admin-users">{{ summary.users }}</strong>
    </div>
    <div class="stat-card">
      <span>运行中任务</span>
      <strong id="admin-running">{{ summary.running_tasks }}</strong>
    </div>
    <div class="stat-card">
      <span>排队任务</span>
      <strong id="admin-queued">{{ summary.queued_tasks }}</strong>
    </div>
    <div class="stat-card">
      <span>并行数</span>
      <strong id="admin-parallelism">{{ summary.parallelism }}</strong>
    </div>
  </div>
</section>

<section class="content-grid content-grid-admin">
  <article class="panel">
    <div class="panel-head">
      <div>
        <div class="section-kicker">系统设置</div>
        <h2>并行调度</h2>
      </div>
      <span class="status-pill status-pending">资源敏感</span>
    </div>
    <form method="post" action="{{ url_for('update_parallelism') }}" class="form-grid form-grid-inline">
      <label class="field">
        <span>最大并行任务数</span>
        <input type="number" name="parallelism" min="1" max="8" value="{{ summary.parallelism }}" required>
      </label>
      <button type="submit" class="button button-primary">保存并行数</button>
    </form>
    <p class="muted-note">建议根据 Space 资源从 1 开始逐步增加。每个任务都会独立启动一个无头浏览器实例。</p>
  </article>

  <article class="panel">
    <div class="panel-head">
      <div>
        <div class="section-kicker">用户录入</div>
        <h2>手动添加或更新用户</h2>
      </div>
      <span class="status-pill status-live">管理员可写</span>
    </div>
    <form method="post" action="{{ url_for('create_or_update_user_from_admin') }}" class="form-grid">
      <label class="field">
        <span>学号</span>
        <input type="text" name="student_id" inputmode="numeric" placeholder="学生学号" required>
      </label>
      <label class="field">
        <span>密码</span>
        <input type="password" name="password" placeholder="学生密码" required>
      </label>
      <label class="field">
        <span>初始课程号</span>
        <input type="text" name="course_id" inputmode="numeric" placeholder="可选">
      </label>
      <label class="field">
        <span>初始课序号</span>
        <input type="text" name="course_index" inputmode="numeric" maxlength="2" placeholder="可选">
      </label>
      <button type="submit" class="button button-primary">保存用户</button>
    </form>
  </article>

  {% if admin.role == "superadmin" %}
  <article class="panel">
    <div class="panel-head">
      <div>
        <div class="section-kicker">权限管理</div>
        <h2>创建普通管理员</h2>
      </div>
      <span class="status-pill status-live">仅超级管理员</span>
    </div>
    <form method="post" action="{{ url_for('create_admin_account') }}" class="form-grid form-grid-inline">
      <label class="field">
        <span>管理员账号</span>
        <input type="text" name="username" placeholder="admin-ops" required>
      </label>
      <label class="field">
        <span>管理员密码</span>
        <input type="password" name="password" placeholder="管理员密码" required>
      </label>
      <button type="submit" class="button button-ghost">创建管理员</button>
    </form>
    <div class="chip-wrap">
      {% for item in admins %}
        <span class="feature-pill">{{ item.username }} · {{ item.role }}</span>
      {% endfor %}
    </div>
  </article>
  {% endif %}
</section>

<section class="panel">
  <div class="panel-head">
    <div>
      <div class="section-kicker">用户列表</div>
      <h2>多用户管理</h2>
    </div>
    <span class="status-pill status-live">管理员全量可见</span>
  </div>

  <div class="user-grid">
    {% if users %}
      {% for item in users %}
        <article class="user-card">
          <div class="user-card-head">
            <div>
              <div class="user-code">{{ item.student_id }}</div>
              <div class="user-meta-text">已选 {{ item.selected_count }}/{{ item.course_count }} · 最近登录 {{ item.last_login_at or "尚未登录" }}</div>
            </div>
            <span class="status-pill status-{{ item.active_task_status or 'idle' }}">{{ item.active_task_status or "idle" }}</span>
          </div>

          <div class="button-row compact">
            <form method="post" action="{{ url_for('start_user_task_from_admin', user_id=item.id) }}">
              <button type="submit" class="button button-primary button-small">启动</button>
            </form>
            <form method="post" action="{{ url_for('stop_user_task_from_admin', user_id=item.id) }}">
              <button type="submit" class="button button-secondary button-small">停止</button>
            </form>
          </div>

          <form method="post" action="{{ url_for('update_user_password_from_admin', user_id=item.id) }}" class="form-grid">
            <label class="field">
              <span>重置密码</span>
              <input type="password" name="password" placeholder="输入新密码" required>
            </label>
            <button type="submit" class="button button-ghost button-small">更新</button>
          </form>

          <form method="post" action="{{ url_for('add_user_course_from_admin', user_id=item.id) }}" class="form-grid form-grid-inline">
            <label class="field">
              <span>课程号</span>
              <input type="text" name="course_id" inputmode="numeric" placeholder="课程号" required>
            </label>
            <label class="field">
              <span>课序号</span>
              <input type="text" name="course_index" inputmode="numeric" maxlength="2" placeholder="01" required>
            </label>
            <button type="submit" class="button button-primary button-small">新增课程</button>
          </form>

          <div class="course-chip-grid">
            {% if item.courses %}
              {% for course in item.courses %}
                <div class="course-chip course-chip-{{ course.status }}">
                  <div>
                    <strong>{{ course.course_id }}_{{ course.course_index }}</strong>
                    <p>{{ course.last_result or "等待执行" }}</p>
                  </div>
                  <form method="post" action="{{ url_for('delete_user_course_from_admin', user_id=item.id, course_record_id=course.id) }}">
                    <button type="submit" class="button button-danger button-small">删</button>
                  </form>
                </div>
              {% endfor %}
            {% else %}
              <div class="empty-state small">这个用户还没有课程记录。</div>
            {% endif %}
          </div>
        </article>
      {% endfor %}
    {% else %}
      <div class="empty-state">当前还没有任何用户，先在上方录入用户信息。</div>
    {% endif %}
  </div>
</section>

<section class="panel console-panel">
  <div class="panel-head">
    <div>
      <div class="section-kicker">全局日志</div>
      <h2>管理员实时控制台</h2>
    </div>
    <span class="status-pill status-live">Live</span>
  </div>
  <div
    class="log-console"
    id="admin-log-stream"
    data-last-id="{{ logs[-1].id if logs else 0 }}"
    data-empty="当前还没有系统日志。"
  >
    {% if logs %}
      {% for log in logs %}
        <div class="log-line log-{{ log.level|lower }}">
          <span class="log-time">{{ log.created_at }}</span>
          <span class="log-actor">{{ log.student_id or log.actor }}</span>
          <span class="log-message">{{ log.message }}</span>
        </div>
      {% endfor %}
    {% else %}
      <div class="log-placeholder">当前还没有系统日志。</div>
    {% endif %}
  </div>
</section>

<script>
  window.addEventListener("DOMContentLoaded", () => {
    SCUApp.initLogStream("admin-log-stream", "{{ url_for('admin_log_stream') }}");
    SCUApp.initAdminStatus("{{ url_for('admin_status') }}");
  });
</script>
{% endblock %}