{% extends "../base.html" %}
{% load crispy_forms_tags %}

{% block page_title %}Subjects{% endblock page_title %}
{% block content %}
    <div class="clearfix"></div>

    <div class="row">
        <div class="col-md-12 col-sm-12 col-xs-12">
            <div class="x_panel">
                <div class="x_title">
                    <h2><i class="fa fa-book"></i> Manage Subjects</h2>
                    <ul class="nav navbar-right panel_toolbox">
                        <li><a class="collapse-link"><i class="fa fa-chevron-up"></i></a></li>
                        <li><a class="close-link"><i class="fa fa-close"></i></a></li>
                    </ul>
                    <div class="clearfix"></div>
                </div>
                <div class="x_content">
                    <div class="row">
                        <div class="col-md-6">
                            {% if can_manage_subjects %}
                            <button type="button" class="btn btn-success" data-toggle="modal" data-target="#addSubjectModal">
                                <i class="fa fa-plus-circle"></i> Add New Subject
                            </button>
                            {% else %}
                            <p class="text-muted">Only Admin or Director of Studies can add subjects.</p>
                            {% endif %}
                        </div>
                        <div class="col-md-6">
                            <div class="input-group">
                                <input type="text" class="form-control" placeholder="Search subjects..." id="subjectSearch">
                                <span class="input-group-btn">
                                    <button class="btn btn-default" type="button"><i class="fa fa-search"></i></button>
                                </span>
                            </div>
                        </div>
                    </div>
                    <div class="ln_solid"></div>

                    {% if subjects %}
                        <div class="table-responsive">
                            <table class="table table-striped table-hover table-bordered" id="subjectsTable" style="width:100%">
                                <thead class="thead-dark">
                                    <tr>
                                        <th style="width: 5%">#</th>
                                        <th>Subject Code</th>
                                        <th>Subject Name</th>
                                        <th>Credit Hours</th>
                                        <th>Section</th>
                                        <th>Type</th>
                                        {% if can_manage_subjects %}
                                        <th style="width: 15%">Actions</th>
                                        {% endif %}
                                    </tr>
                                </thead>
                                <tbody>
                                    {% for subject in subjects %}
                                        <tr>
                                            <td>{{ forloop.counter }}</td>
                                            <td><code>{{ subject.code }}</code></td>
                                            <td><strong>{{ subject.name }}</strong></td>
                                            <td>{{ subject.credit_hours }}</td>
                                            <td>{{ subject.section }}</td>
                                            <td>
                                                <span class="label label-{% if subject.type == 'Core' %}success{% elif subject.type == 'Elective' %}warning{% else %}default{% endif %}">
                                                    {{ subject.type }}
                                                </span>
                                            </td>
                                            {% if can_manage_subjects %}
                                            <td>
                                                <a href="{% url 'edit_subject_page' subject.id %}" class="btn btn-info btn-sm" title="Edit Subject">
                                                    <i class="fa fa-edit"></i> 
                                                </a>
                                                <a href="{% url 'delete_subject_page' subject.id %}" class="btn btn-danger btn-sm" title="Delete Subject" onclick="return confirm('Are you sure you want to delete this subject?')">
                                                    <i class="fa fa-trash"></i>
                                                </a>
                                            </td>
                                            {% endif %}
                                        </tr>
                                    {% endfor %}
                                </tbody>
                            </table>
                        </div>
                    {% else %}
                        <div class="text-center">
                            <div class="alert alert-info" role="alert">
                                <i class="fa fa-info-circle fa-2x"></i>
                                <h4>No Subjects Available</h4>
                                <p>Get started by adding your first subject using the buttons above.</p>
                            </div>
                        </div>
                    {% endif %}
                </div>
            </div>
        </div>
    </div>

    <!-- Add Subject Modal -->
    {% if can_manage_subjects %}
    <div class="modal fade" id="addSubjectModal" tabindex="-1" role="dialog" aria-labelledby="addSubjectModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-lg" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="addSubjectModalLabel"><i class="fa fa-plus-circle"></i> Add New Subject</h5>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <form method="POST" action="{% url 'add_subject_page' %}" enctype="multipart/form-data">
                    {% csrf_token %}
                    <div class="modal-body">
                        {{ subject_form|crispy }}
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-secondary" data-dismiss="modal">
                            <i class="fa fa-times"></i> Cancel
                        </button>
                        <button type="submit" class="btn btn-primary">
                            <i class="fa fa-save"></i> Save Subject
                        </button>
                    </div>
                </form>
            </div>
        </div>
    </div>
    {% endif %}

    <!-- Bulk Upload Modal -->
    <div class="modal fade" id="bulkUploadModal" tabindex="-1" role="dialog" aria-labelledby="bulkUploadModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-md" role="document">
            <div class="modal-content">
                <div class="modal-header">
                   
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <form method="POST" action="" enctype="multipart/form-data">
                    {% csrf_token %}
                    <div class="modal-body">
                        {{ csv_form }}
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-secondary" data-dismiss="modal">
                            <i class="fa fa-times"></i> Cancel
                        </button>
                        
                    </div>
                </form>
            </div>
        </div>
    </div>

    <script>
        $(document).ready(function() {
            // Simple search functionality
            $('#subjectSearch').on('keyup', function() {
                var value = $(this).val().toLowerCase();
                $('#subjectsTable tbody tr').filter(function() {
                    $(this).toggle($(this).text().toLowerCase().indexOf(value) > -1);
                });
            });
        });
    </script>
{% endblock content %}