{% extends 'base.html' %}
{% load static %}
{% load app_filters %}
{% block extrastyle %}
    <!-- Bootstrap CSS -->
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css"
          rel="stylesheet">
    <!-- Font Awesome -->
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css"
          rel="stylesheet" />
    <style>
    /* Custom styling */
    .content-card {
        background: white;
        border-radius: 1rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        padding: 1.5rem;
        margin-bottom: 1.5rem;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .content-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    }

    .routine-card {
        cursor: pointer;
        position: relative;
        transition: all 0.2s ease;
    }

    .routine-card:hover {
        background-color: #f8f9fa;
    }

    .routine-card.active {
        background-color: #e7f1ff;
        border-left: 4px solid #4F46E5;
    }

    .student-list {
        max-height: 500px;
        overflow-y: auto;
    }

    .table th {
        position: sticky;
        top: 0;
        background-color: #fff;
        z-index: 10;
    }

    .custom-control {
        padding-left: 1.5rem;
    }

    .header-flex {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 1rem;
    }
    </style>
{% endblock %}
{% block content %}
    <div class="container-fluid py-4">
        <!-- Header -->
        <div class="header-flex">
            <h2 class="mb-0">Manage Attendance</h2>
            <a href="{% url 'teacherDashboard' %}" class="btn btn-outline-secondary">
                <i class="fas fa-arrow-left me-2"></i> Back to Dashboard
            </a>
        </div>
        <div class="row">
            <!-- Routines Sidebar -->
            <div class="col-md-3">
                <div class="content-card">
                    <h5 class="mb-3">Your Routines</h5>
                    {% if routines %}
                        <div class="list-group">
                            {% for routine in routines %}
                                <a href="{% url 'manage_attendance_routine' routine.id %}"
                                   class="list-group-item list-group-item-action routine-card {% if selected_routine.id == routine.id %}active{% endif %}">
                                    <div class="d-flex w-100 justify-content-between">
                                        <h6 class="mb-1">{{ routine.subject.name }}</h6>
                                    </div>
                                    <p class="mb-1 small">{{ routine.course.name }} - {% if routine.course.duration_type == 'Semester' %}Semester{% else %}Year{% endif %} {{ routine.period_or_year }}</p>
                                    <div class="d-flex justify-content-between align-items-center">
                                        <span class="badge bg-info text-white">
                                            {{ routine.start_time|time:"g:i A" }} - {{ routine.end_time|time:"g:i A" }}
                                        </span>
                                    </div>
                                </a>
                            {% endfor %}
                        </div>
                    {% else %}
                        <div class="alert alert-info">
                            <i class="fas fa-info-circle me-2"></i> You don't have any active routines.
                        </div>
                    {% endif %}
                </div>
            </div>
            <!-- Attendance Form -->
            <div class="col-md-9">
                <div class="content-card">
                    {% if selected_routine %}
                        <div class="header-flex">
                            <div>
                                <h5 class="mb-1">{{ selected_routine.subject.name }}</h5>
                                <p class="text-muted mb-0">{{ selected_routine.course.name }} - {% if selected_routine.course.duration_type == 'Semester' %}Semester{% else %}Year{% endif %} {{ selected_routine.period_or_year }}</p>
                            </div>
                            <div>
                                <form class="d-flex align-items-center"
                                      method="get"
                                      action="{% url 'manage_attendance_routine' selected_routine.id %}">
                                    <label for="datePicker" class="me-2">Date:</label>
                                    <input type="date"
                                           id="datePicker"
                                           name="date"
                                           class="form-control form-control-sm"
                                           value="{{ selected_date|date:'Y-m-d' }}"
                                           max="{{ today|date:'Y-m-d' }}">
                                    <button type="submit" class="btn btn-sm btn-primary ms-2">
                                        <i class="fas fa-calendar-check me-1"></i> View
                                    </button>
                                </form>
                            </div>
                        </div>
                        <hr>
                        <!-- Attendance Form -->
                        <form method="post" action="/app/save-attendance/" id="attendanceForm">
                            {% csrf_token %}
                            <input type="hidden" name="routine_id" value="{{ selected_routine.id }}">
                            <input type="hidden" name="date" value="{{ selected_date|date:'Y-m-d' }}">
                            <div class="mb-3">
                                <div class="form-check form-switch">
                                    <input class="form-check-input"
                                           type="checkbox"
                                           id="teacherAttend"
                                           name="teacher_attend"
                                           {% if attendance_data.teacher_attend %}checked{% endif %}>
                                    <label class="form-check-label" for="teacherAttend">Teacher Present</label>
                                </div>
                            </div>
                            <div class="mb-3">
                                <label for="classStatus" class="form-label">Class Status</label>
                                <select class="form-select" id="classStatus" name="class_status">
                                    <option value="True"
                                            {% if attendance_data.class_status == True %}selected{% endif %}>
                                        Conducted
                                    </option>
                                    <option value="False"
                                            {% if attendance_data.class_status == False %}selected{% endif %}>
                                        Not Conducted
                                    </option>
                                </select>
                            </div>
                            <!-- Student Attendance -->
                            <h6 class="mb-3">Student Attendance</h6>
                            {% if students %}
                                <div class="student-list">
                                    <table class="table table-hover">
                                        <thead>
                                            <tr>
                                                <th width="5%">#</th>
                                                <th width="40%">Name</th>
                                                <th width="40%">Roll/ID</th>
                                                <th width="15%">Present</th>
                                            </tr>
                                        </thead>
                                        <tbody>
                                            {% for student in students %}
                                                <tr>
                                                    <td>{{ forloop.counter }}</td>
                                                    <td>{{ student.name }}</td>
                                                    <td>{{ student.roll_no|default:student.id }}</td>
                                                    <td>
                                                        <div class="form-check">
                                                            <input class="form-check-input"
                                                                   type="checkbox"
                                                                   id="student_{{ student.id }}"
                                                                   name="student_{{ student.id }}"
                                                                   {% if attendance_data.records and attendance_data.records|get_item:student.id %}checked{% endif %}>
                                                        </div>
                                                    </td>
                                                </tr>
                                            {% endfor %}
                                        </tbody>
                                    </table>
                                </div>
                                <div class="mt-3 d-flex justify-content-between">
                                    <div>
                                        <button type="button" class="btn btn-outline-success me-2" id="selectAllBtn">
                                            <i class="fas fa-check-double me-1"></i> Mark All Present
                                        </button>
                                        <button type="button" class="btn btn-outline-danger" id="deselectAllBtn">
                                            <i class="fas fa-times-circle me-1"></i> Mark All Absent
                                        </button>
                                    </div>
                                    <button type="submit" class="btn btn-primary">
                                        <i class="fas fa-save me-1"></i> Save Attendance
                                    </button>
                                </div>
                            {% else %}
                                <div class="text-center py-5">
                                    <i class="fas fa-exclamation-triangle text-warning mb-3" style="font-size: 3rem;"></i>
                                    <p class="mb-2"><i class="fas fa-exclamation-triangle me-2"></i> No students found for this course and period.</p>
                                    <p class="text-muted small">There are no students assigned to this course or perhaps no attendance record exists.</p>
                                </div>
                            {% endif %}
                        </form>
                    {% else %}
                        <div class="text-center py-5">
                            <i class="fas fa-chalkboard-teacher fa-4x text-muted mb-3"></i>
                            <h5>Select a routine to manage attendance</h5>
                            <p class="text-muted">Choose a class from the list on the left to take attendance.</p>
                        </div>
                    {% endif %}
                </div>
            </div>
        </div>
    </div>
{% endblock %}
{% block extrahead %}
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script>
    document.addEventListener('DOMContentLoaded', function() {
        // Select/Deselect all buttons
        const selectAllBtn = document.getElementById('selectAllBtn');
        const deselectAllBtn = document.getElementById('deselectAllBtn');

        if (selectAllBtn) {
            selectAllBtn.addEventListener('click', function() {
                document.querySelectorAll('input[name^="student_"]').forEach(checkbox => {
                    checkbox.checked = true;
                });
            });
        }

        if (deselectAllBtn) {
            deselectAllBtn.addEventListener('click', function() {
                document.querySelectorAll('input[name^="student_"]').forEach(checkbox => {
                    checkbox.checked = false;
                });
            });
        }

        // Date change handler
        const datePicker = document.getElementById('datePicker');
        if (datePicker) {
            datePicker.max = new Date().toISOString().split('T')[0]; // Set max date to today
        }
    });
    </script>
{% endblock %}