{% extends "base.html" %}

{% block title %}Modificar Reserva #{{ reservation.id }} - Edu-Space Admin{% endblock %}

{% block content %}
<div class="container-fluid pt-5 mt-4">
<div class="row">
    <div class="col-12">
        <div class="d-flex justify-content-between align-items-center mb-4">
            <div>
                <nav aria-label="breadcrumb">
                    <ol class="breadcrumb mb-1 small">
                        <li class="breadcrumb-item"><a href="/schedule/today_schedule">Schedule</a></li>
                        <li class="breadcrumb-item"><a href="/schedule/list_reservations">Reservas</a></li>
                        <li class="breadcrumb-item"><a href="/schedule/view_reservation">#{{ reservation.id }}</a></li>
                        <li class="breadcrumb-item active">Modificar</li>
                    </ol>
                </nav>
                <h1 class="h3 mb-0">
                    <i class="bi bi-pencil-square text-warning me-2"></i>Modificar Reserva #{{ reservation.id }}
                </h1>
            </div>
            <div class="d-flex gap-2">
                <a href="/schedule/view_reservation" class="btn btn-outline-secondary">
                    <i class="bi bi-arrow-left me-1"></i>Volver al Detalle
                </a>
            </div>
        </div>
    </div>
</div>

<div class="row">
    <div class="col-lg-10 mx-auto">
        <div class="card border-0 shadow-sm">
            <div class="card-header bg-body-tertiary border-0 py-3 d-flex justify-content-between align-items-center">
                <h5 class="mb-0 h6 fw-bold">
                    <i class="bi bi-calendar3 text-warning me-2"></i>Editar Parámetros de la Reserva
                </h5>
                <span class="badge {% if reservation.status == 'CONFIRMED' %}bg-success{% elif reservation.status == 'PENDING' %}bg-warning{% else %}bg-secondary{% endif %}">
                    {{ reservation.status }}
                </span>
            </div>
            <div class="card-body p-4">
                <form method="POST" id="reservation-form" novalidate>
                    
                    <!-- 1. SELECTORES EN CASCADA: Edificio -> Piso -> Aula -->
                    <div class="mb-4">
                        <div class="p-3 rounded bg-body-tertiary border">
                            <label class="form-label fw-bold text-primary mb-2">
                                <i class="bi bi-geo-alt-fill me-1"></i>Espacio Físico / Modalidad <span class="text-danger">*</span>
                            </label>
                            <div class="row g-3">
                                <!-- Edificio / Sede -->
                                <div class="col-md-4">
                                    <label for="cascade-building" class="form-label small fw-semibold text-muted mb-1">
                                        <i class="bi bi-buildings text-primary me-1"></i>1. Edificio / Sede
                                    </label>
                                    <select id="cascade-building" class="form-select form-select-sm">
                                        <option value="">-- Selecciona Edificio --</option>
                                        {% for b in buildings %}
                                            <option value="{{ b.id }}" data-virtual="{{ 'true' if b.code == 'VIRTUAL' or 'VIRTUAL' in (b.name|upper) else 'false' }}">
                                                {% if b.code == 'VIRTUAL' or 'VIRTUAL' in (b.name|upper) %}🌐{% else %}🏢{% endif %} {{ b.name }}
                                            </option>
                                        {% endfor %}
                                    </select>
                                </div>

                                <!-- Piso / Nivel -->
                                <div class="col-md-4">
                                    <label for="cascade-floor" class="form-label small fw-semibold text-muted mb-1">
                                        <i class="bi bi-layers text-secondary me-1"></i>2. Piso / Nivel
                                    </label>
                                    <select id="cascade-floor" class="form-select form-select-sm" disabled>
                                        <option value="">-- Selecciona Piso --</option>
                                    </select>
                                </div>

                                <!-- Aula / Espacio -->
                                <div class="col-md-4">
                                    <label for="classroom_id" class="form-label small fw-semibold text-muted mb-1">
                                        <i class="bi bi-door-open text-success me-1"></i>3. Aula Final <span class="text-danger">*</span>
                                    </label>
                                    {{ form.classroom_id(class="form-select form-select-sm", id="classroom_id") }}
                                    {% if form.classroom_id.errors %}
                                        <div class="invalid-feedback d-block">{{ form.classroom_id.errors[0] }}</div>
                                    {% endif %}
                                </div>
                            </div>
                            
                            <!-- Card de Info Dinámica del Aula -->
                            <div id="classroom-info-card" class="mt-3 p-2 rounded bg-body border" style="display: none;">
                                <div class="d-flex align-items-center justify-content-between flex-wrap gap-2">
                                    <div>
                                        <span class="badge bg-primary me-2" id="info-room-code">-</span>
                                        <small class="text-muted" id="info-room-location">-</small>
                                    </div>
                                    <div>
                                        <span class="badge bg-info-subtle text-info border me-1" id="info-room-capacity">Cap: -</span>
                                        <span class="badge bg-success-subtle text-success border" id="info-room-type">Presencial</span>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                    
                    <!-- 2. DATOS ACADÉMICOS Y HORARIOS -->
                    <div class="row g-3 mb-4">
                        <div class="col-md-6">
                            <label for="commission_id" class="form-label fw-bold text-primary mb-1">
                                <i class="bi bi-diagram-3 me-1"></i>Comisión Académica
                            </label>
                            {{ form.commission_id(class="form-select", id="commission_id") }}
                            <div class="form-text small text-muted">Comisión y asignatura vinculada a esta reserva.</div>
                            {% if form.commission_id.errors %}
                                <div class="invalid-feedback d-block">{{ form.commission_id.errors[0] }}</div>
                            {% endif %}
                        </div>

                        <div class="col-md-3">
                            <label for="start_time" class="form-label fw-bold text-primary mb-1">
                                <i class="bi bi-clock me-1"></i>Inicio <span class="text-danger">*</span>
                            </label>
                            {{ form.start_time(class="form-control", id="start_time", type="datetime-local") }}
                            {% if form.start_time.errors %}
                                <div class="invalid-feedback d-block">{{ form.start_time.errors[0] }}</div>
                            {% endif %}
                        </div>

                        <div class="col-md-3">
                            <label for="end_time" class="form-label fw-bold text-primary mb-1">
                                <i class="bi bi-clock-fill me-1"></i>Fin <span class="text-danger">*</span>
                            </label>
                            {{ form.end_time(class="form-control", id="end_time", type="datetime-local") }}
                            {% if form.end_time.errors %}
                                <div class="invalid-feedback d-block">{{ form.end_time.errors[0] }}</div>
                            {% endif %}
                        </div>
                    </div>

                    <!-- 3. PROPÓSITO Y ASISTENTES -->
                    <div class="row g-3 mb-4">
                        <div class="col-md-8">
                            <label for="purpose" class="form-label fw-bold text-primary mb-1">
                                <i class="bi bi-journal-text me-1"></i>Propósito / Motivo <span class="text-danger">*</span>
                            </label>
                            {{ form.purpose(class="form-control", id="purpose", placeholder="ej. Cursada regular, Examen Parcial, Clase Especial") }}
                            {% if form.purpose.errors %}
                                <div class="invalid-feedback d-block">{{ form.purpose.errors[0] }}</div>
                            {% endif %}
                        </div>

                        <div class="col-md-4">
                            <label for="expected_attendees" class="form-label fw-bold text-primary mb-1">
                                <i class="bi bi-people me-1"></i>Asistentes Estimados
                            </label>
                            {{ form.expected_attendees(class="form-control", id="expected_attendees", type="number", min="0") }}
                            {% if form.expected_attendees.errors %}
                                <div class="invalid-feedback d-block">{{ form.expected_attendees.errors[0] }}</div>
                            {% endif %}
                        </div>
                    </div>

                    <!-- 4. ENLACE DE AULA VIRTUAL (Zoom, Meet, Teams, etc) -->
                    <div class="mb-4">
                        <div class="p-3 rounded bg-primary-subtle border border-primary-subtle">
                            <label for="virtual_link" class="form-label fw-bold text-primary mb-1">
                                <i class="bi bi-camera-video-fill me-1"></i>Enlace de Aula Virtual / Videoconferencia
                            </label>
                            <div class="input-group">
                                <span class="input-group-text bg-body text-primary"><i class="bi bi-link-45deg"></i></span>
                                {{ form.virtual_link(class="form-control font-monospace", id="virtual_link", placeholder="https://zoom.us/j/... o https://meet.google.com/...") }}
                                <button type="button" class="btn btn-outline-primary" id="btn-test-link" title="Probar enlace en nueva pestaña">
                                    <i class="bi bi-box-arrow-up-right me-1"></i>Probar
                                </button>
                            </div>
                            <div class="form-text small text-muted">
                                Enlace directo a Zoom, Google Meet, Teams o Campus Virtual. Si se ingresa, se habilitará el botón de acceso directo en cartelera y cronograma.
                            </div>
                            {% if form.virtual_link.errors %}
                                <div class="invalid-feedback d-block">{{ form.virtual_link.errors[0] }}</div>
                            {% endif %}
                        </div>
                    </div>

                    <!-- 5. NOTAS ADICIONALES -->
                    <div class="mb-4">
                        <label for="notes" class="form-label fw-bold text-primary mb-1">
                            <i class="bi bi-card-text me-1"></i>Observaciones / Notas Adicionales
                        </label>
                        {{ form.notes(class="form-control", id="notes", rows="3", placeholder="Observaciones sobre equipamiento, requerimientos o modalidad...") }}
                        {% if form.notes.errors %}
                            <div class="invalid-feedback d-block">{{ form.notes.errors[0] }}</div>
                        {% endif %}
                    </div>

                    <!-- 6. RESUMEN DINÁMICO DE MODIFICACIÓN -->
                    <div class="card bg-body-tertiary border mb-4 shadow-none">
                        <div class="card-header bg-transparent py-2 border-bottom">
                            <h6 class="card-title mb-0 small fw-bold text-primary">
                                <i class="bi bi-check2-circle me-1"></i>Resumen de Cambios
                            </h6>
                        </div>
                        <div class="card-body p-3">
                            <div class="row g-2 small mb-2">
                                <div class="col-md-4">
                                    <span class="text-muted">🏢 Edificio:</span>
                                    <strong id="summary-building" class="text-body ms-1">-</strong>
                                </div>
                                <div class="col-md-4">
                                    <span class="text-muted">📍 Piso / Nivel:</span>
                                    <strong id="summary-floor" class="text-body ms-1">-</strong>
                                </div>
                                <div class="col-md-4">
                                    <span class="text-muted">🚪 Aula Seleccionada:</span>
                                    <strong id="summary-classroom" class="text-primary ms-1">-</strong>
                                </div>
                            </div>
                            <div class="row g-2 small mb-2">
                                <div class="col-md-4">
                                    <span class="text-muted">⏱️ Duración:</span>
                                    <strong id="summary-duration" class="text-body ms-1">-</strong>
                                </div>
                                <div class="col-md-4">
                                    <span class="text-muted">👥 Capacidad:</span>
                                    <strong id="summary-capacity" class="text-body ms-1">-</strong>
                                </div>
                                <div class="col-md-4">
                                    <span class="text-muted">📚 Comisión:</span>
                                    <strong id="summary-commission" class="text-body ms-1">-</strong>
                                </div>
                            </div>
                            <div class="p-2 rounded bg-body border d-flex align-items-center justify-content-between">
                                <div class="text-truncate me-2">
                                    <small class="text-muted d-block">🎥 Enlace de Aula Virtual:</small>
                                    <span id="summary-virtual-link" class="small font-monospace text-primary text-break">Sin enlace configurado</span>
                                </div>
                                <span class="badge bg-success-subtle text-success border" id="summary-virtual-badge" style="display:none;">
                                    <i class="bi bi-camera-video me-1"></i>Virtual
                                </span>
                            </div>
                        </div>
                    </div>
                    
                    <!-- Botones -->
                    <div class="d-flex justify-content-between align-items-center">
                        <a href="/schedule/view_reservation" class="btn btn-outline-secondary">
                            <i class="bi bi-x-circle me-1"></i>Cancelar
                        </a>
                        <button type="submit" class="btn btn-warning px-4 fw-bold">
                            <i class="bi bi-check-circle me-1"></i>Guardar Modificaciones
                        </button>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>
</div>
{% endblock %}

{% block extra_js %}
<script type="application/json" id="classroom-data">
{
    {% for c in classroom_list %}
    "{{ c.id }}": {
        "id": {{ c.id }},
        "building_id": {{ (c.building_id or 0)|tojson }},
        "building_name": {{ c.building_name|tojson }},
        "floor": {{ c.floor|tojson }},
        "floor_display": {{ c.floor_display|tojson }},
        "code": {{ c.code|tojson }},
        "code_display": {{ c.code_display|tojson }},
        "location_display": {{ c.location_display|tojson }},
        "capacity": {{ c.capacity_display|tojson }},
        "capacity_num": {{ c.capacity }},
        "is_virtual": {{ c.is_virtual|tojson }}
    }{% if not loop.last %},{% endif %}
    {% endfor %}
}
</script>

<script type="application/json" id="commission-data">
{
    {% for c in commission_list %}
    "{{ c.id }}": {
        "id": {{ c.id }},
        "code": {{ c.code|tojson }},
        "virtual_link": {{ (c.virtual_link or '')|tojson }},
        "max_students": {{ c.max_students }}
    }{% if not loop.last %},{% endif %}
    {% endfor %}
}
</script>

<script>
$(document).ready(function() {
    let classroomData = {};
    try {
        const rawData = document.getElementById('classroom-data')?.textContent;
        if (rawData) classroomData = JSON.parse(rawData);
    } catch (err) {
        console.error('Error parsing classroomData:', err);
    }
    
    let commissionData = {};
    try {
        const rawComm = document.getElementById('commission-data')?.textContent;
        if (rawComm) commissionData = JSON.parse(rawComm);
    } catch (err) {
        console.error('Error parsing commissionData:', err);
    }

    const $bldgSelect = $('#cascade-building');
    const $floorSelect = $('#cascade-floor');
    const $roomSelect = $('#classroom_id');
    const $commSelect = $('#commission_id');
    const $virtualLinkInput = $('#virtual_link');
    const $btnTestLink = $('#btn-test-link');

    const initialRoomId = "{{ reservation.classroom_id }}";

    // 1. Población de Pisos al cambiar Edificio
    $bldgSelect.on('change', function() {
        const selectedBldg = $(this).val();
        $floorSelect.empty().append('<option value="">-- Selecciona Piso --</option>');
        $roomSelect.empty().append('<option value="">-- Selecciona Aula --</option>');
        
        if (!selectedBldg) {
            $floorSelect.prop('disabled', true);
            $roomSelect.prop('disabled', true);
            updateSummary();
            return;
        }

        const floors = new Set();
        Object.values(classroomData).forEach(function(room) {
            if (String(room.building_id) === String(selectedBldg)) {
                floors.add(room.floor);
            }
        });

        const sortedFloors = Array.from(floors).sort(function(a, b) {
            if (a === '0' || a === 'PB') return -1;
            if (b === '0' || b === 'PB') return 1;
            return String(a).localeCompare(String(b), undefined, {numeric: true});
        });

        sortedFloors.forEach(function(fl) {
            let label = (fl === '0' || fl === 'PB') ? 'Planta Baja' : ('Piso ' + fl);
            $floorSelect.append($('<option>', { value: fl, text: label }));
        });

        $floorSelect.prop('disabled', false);
        $roomSelect.prop('disabled', true);
        updateSummary();
    });

    // 2. Población de Aulas al cambiar Piso
    $floorSelect.on('change', function() {
        const selectedBldg = $bldgSelect.val();
        const selectedFloor = $(this).val();
        $roomSelect.empty().append('<option value="">-- Selecciona Aula --</option>');

        if (!selectedFloor) {
            $roomSelect.prop('disabled', true);
            updateSummary();
            return;
        }

        const matchingRooms = Object.values(classroomData).filter(function(room) {
            return String(room.building_id) === String(selectedBldg) && String(room.floor) === String(selectedFloor);
        });

        matchingRooms.sort(function(a, b) { return a.code.localeCompare(b.code); });

        matchingRooms.forEach(function(room) {
            const capText = room.is_virtual ? '∞ Remoto' : ('Cap: ' + room.capacity);
            $roomSelect.append($('<option>', {
                value: room.id,
                text: room.code + ' (' + capText + ')'
            }));
        });

        $roomSelect.prop('disabled', false);
        updateSummary();
    });

    // 3. Cambio de Aula
    $roomSelect.on('change', function() {
        updateClassroomInfo();
        updateSummary();
    });

    // 4. Preselección inicial de Aula actual
    if (initialRoomId && classroomData[initialRoomId]) {
        const initRoom = classroomData[initialRoomId];
        $bldgSelect.val(initRoom.building_id).trigger('change');
        $floorSelect.val(initRoom.floor).trigger('change');
        $roomSelect.val(initRoom.id).trigger('change');
    }

    function updateClassroomInfo() {
        const roomId = $roomSelect.val();
        const room = classroomData[roomId];
        const $card = $('#classroom-info-card');
        if (!room) {
            $card.slideUp(150);
            return;
        }
        $('#info-room-code').text(room.code);
        $('#info-room-location').text(room.location_display);
        $('#info-room-capacity').text('Capacidad: ' + room.capacity);
        if (room.is_virtual) {
            $('#info-room-type').removeClass('bg-success-subtle text-success').addClass('bg-primary-subtle text-primary').text('🌐 Campus Virtual');
        } else {
            $('#info-room-type').removeClass('bg-primary-subtle text-primary').addClass('bg-success-subtle text-success').text('🏢 Presencial');
        }
        $card.slideDown(150);
    }

    function updateSummary() {
        const bldgName = $bldgSelect.find('option:selected').text().trim();
        const floorName = $floorSelect.find('option:selected').text().trim();
        const roomId = $roomSelect.val();
        const room = classroomData[roomId];
        
        $('#summary-building').text(bldgName && !$bldgSelect.val() ? '-' : (bldgName || '-'));
        $('#summary-floor').text(floorName && !$floorSelect.val() ? '-' : (floorName || '-'));
        $('#summary-classroom').text(room ? room.code : '-');
        $('#summary-capacity').text(room ? (room.is_virtual ? '∞ Ilimitada' : room.capacity) : '-');

        const commText = $commSelect.find('option:selected').text().trim();
        $('#summary-commission').text(commText && $commSelect.val() ? commText : '-');

        // Duración
        const st = $('#start_time').val();
        const et = $('#end_time').val();
        if (st && et) {
            const startDate = new Date(st);
            const endDate = new Date(et);
            const diffMs = endDate - startDate;
            if (diffMs > 0) {
                const diffHrs = Math.floor(diffMs / 3600000);
                const diffMins = Math.round((diffMs % 3600000) / 60000);
                let durText = '';
                if (diffHrs > 0) durText += diffHrs + ' hs ';
                if (diffMins > 0) durText += diffMins + ' min';
                $('#summary-duration').text(durText);
            } else {
                $('#summary-duration').text('Rango inválido');
            }
        }

        // Enlace virtual
        const vLink = $virtualLinkInput.val() ? $virtualLinkInput.val().trim() : '';
        if (vLink) {
            $('#summary-virtual-link').html('<a href="' + vLink + '" target="_blank" class="text-decoration-none text-primary"><i class="bi bi-box-arrow-up-right me-1"></i>' + vLink + '</a>');
            $('#summary-virtual-badge').show();
        } else {
            $('#summary-virtual-link').text('Sin enlace configurado');
            $('#summary-virtual-badge').hide();
        }
    }

    // Eventos reactivos
    $('#start_time, #end_time, #commission_id, #virtual_link').on('input change', updateSummary);

    // Botón Probar enlace
    $btnTestLink.on('click', function() {
        const link = $virtualLinkInput.val() ? $virtualLinkInput.val().trim() : '';
        if (link) {
            window.open(link, '_blank');
        } else {
            alert('Por favor ingresa primero una URL para probar.');
        }
    });

    updateSummary();
});
</script>
{% endblock %}