{% extends 'grades/base.html' %}
{% block title %}课程管理{% endblock %}
{% block breadcrumb %}<li class="breadcrumb-item active">课程管理</li>{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-3">
    <h4><i class="bi bi-book"></i> 课程管理</h4>
    <a href="{% url 'course_add' %}" class="btn btn-primary"><i class="bi bi-plus-circle"></i> 添加课程</a>
</div>

<div class="card mb-3">
    <div class="card-body py-2">
        <form method="get" class="row g-2 align-items-end">
            <div class="col-md-4">
                <input type="text" name="keyword" class="form-control form-control-sm" placeholder="课程号 / 课程名" value="{{ keyword }}">
            </div>
            <div class="col-md-4">
                <input type="text" name="teacher" class="form-control form-control-sm" placeholder="任课教师" value="{{ teacher }}">
            </div>
            <div class="col-md-4">
                <button type="submit" class="btn btn-primary btn-sm"><i class="bi bi-search"></i> 查询</button>
                <a href="{% url 'course_list' %}" class="btn btn-outline-secondary btn-sm">重置</a>
            </div>
        </form>
    </div>
</div>

<div class="card">
    <div class="card-body p-0">
        <table class="table table-hover mb-0">
            <thead>
                <tr><th>#</th><th>课程号</th><th>课程名称</th><th>学分</th><th>任课教师</th><th>操作</th></tr>
            </thead>
            <tbody>
                {% for c in courses %}
                <tr>
                    <td>{{ forloop.counter }}</td>
                    <td>{{ c.course_id }}</td>
                    <td>{{ c.course_name }}</td>
                    <td>{{ c.credit }}</td>
                    <td>{{ c.teacher|default:"-" }}</td>
                    <td>
                        <a href="{% url 'course_edit' c.pk %}" class="btn btn-sm btn-outline-primary"><i class="bi bi-pencil"></i></a>
                        <form method="post" action="{% url 'course_delete' c.pk %}" class="d-inline"
                              onsubmit="return confirm('确定删除课程 {{ c.course_name }}？')">
                            {% csrf_token %}
                            <button class="btn btn-sm btn-outline-danger"><i class="bi bi-trash"></i></button>
                        </form>
                    </td>
                </tr>
                {% empty %}
                <tr><td colspan="6" class="text-center text-muted py-3">暂无课程数据</td></tr>
                {% endfor %}
            </tbody>
        </table>
    </div>
</div>
<div class="mt-2 text-muted small">共 {{ courses|length }} 条记录</div>
{% endblock %}