{% extends 'grades/base.html' %}
{% block title %}教师首页{% endblock %}
{% block breadcrumb %}<li class="breadcrumb-item active">教师首页</li>{% endblock %}

{% block content %}
<h4 class="mb-4"><i class="bi bi-speedometer2"></i> 教学概览</h4>

<div class="row g-3 mb-4">
    <div class="col-md-4">
        <div class="stat-card green">
            <div class="stat-value">{{ student_count }}</div>
            <div class="stat-label"><i class="bi bi-person-badge"></i> 学生总数</div>
        </div>
    </div>
    <div class="col-md-4">
        <div class="stat-card cyan">
            <div class="stat-value">{{ course_count }}</div>
            <div class="stat-label"><i class="bi bi-book"></i> 课程总数</div>
        </div>
    </div>
    <div class="col-md-4">
        <div class="stat-card yellow">
            <div class="stat-value">{{ grade_count }}</div>
            <div class="stat-label"><i class="bi bi-clipboard-data"></i> 成绩记录</div>
        </div>
    </div>
</div>

<div class="row g-3">
    <div class="col-md-6">
        <div class="card">
            <div class="card-header">快捷操作</div>
            <div class="card-body">
                <a href="{% url 'student_add' %}" class="btn btn-outline-success me-2 mb-2"><i class="bi bi-person-plus"></i> 添加学生</a>
                <a href="{% url 'course_add' %}" class="btn btn-outline-info me-2 mb-2"><i class="bi bi-plus-circle"></i> 添加课程</a>
                <a href="{% url 'grade_add' %}" class="btn btn-outline-primary me-2 mb-2"><i class="bi bi-pencil-square"></i> 录入成绩</a>
                <a href="{% url 'import_grades' %}" class="btn btn-outline-warning me-2 mb-2"><i class="bi bi-upload"></i> 批量导入</a>
            </div>
        </div>
    </div>
    <div class="col-md-6">
        <div class="card">
            <div class="card-header">最近录入</div>
            <div class="card-body p-0">
                <table class="table table-hover mb-0">
                    <thead>
                        <tr><th>学生</th><th>课程</th><th>成绩</th><th>学期</th></tr>
                    </thead>
                    <tbody>
                        {% for g in recent_grades %}
                        <tr>
                            <td>{{ g.student.name }}</td>
                            <td>{{ g.course.course_name }}</td>
                            <td>
                                <span class="badge {% if g.score >= 90 %}bg-success{% elif g.score >= 80 %}bg-primary{% elif g.score >= 70 %}bg-info{% elif g.score >= 60 %}bg-warning text-dark{% else %}bg-danger{% endif %}">
                                    {{ g.score }}
                                </span>
                            </td>
                            <td>{{ g.semester }}</td>
                        </tr>
                        {% empty %}
                        <tr><td colspan="4" class="text-center text-muted py-3">暂无成绩数据</td></tr>
                        {% endfor %}
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</div>
{% endblock %}