{% extends "base.html" %}

{% block title %}Résultats - {{ assessment.title }} - Gestion Scolaire{% endblock %}

{% block content %}
<div class="space-y-6">
    <div class="flex justify-between items-center">
        <div>
            <a href="{{ url_for('assessments.detail', id=assessment.id) }}" class="text-blue-600 hover:text-blue-800 text-sm font-medium mb-2 inline-block">
                ← Retour à l'évaluation
            </a>
            <h1 class="text-2xl font-bold text-gray-900">Résultats - {{ assessment.title }}</h1>
            <p class="text-gray-600">{{ assessment.class_group.name }} - {{ assessment.date.strftime('%d/%m/%Y') }} - Trimestre {{ assessment.trimester }}</p>
        </div>
    </div>
    
    <!-- Statistiques générales -->
    <div class="bg-white shadow rounded-lg">
        <div class="px-6 py-4 border-b border-gray-200">
            <h2 class="text-lg font-medium text-gray-900">Statistiques de l'évaluation</h2>
        </div>
        <div class="px-6 py-4">
            <div class="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-6 gap-4">
                <div class="text-center">
                    <div class="text-2xl font-bold text-blue-600">{{ statistics.count }}</div>
                    <div class="text-sm text-gray-500">Élèves</div>
                </div>
                <div class="text-center">
                    <div class="text-2xl font-bold text-green-600">{{ statistics.mean }}</div>
                    <div class="text-sm text-gray-500">Moyenne</div>
                </div>
                <div class="text-center">
                    <div class="text-2xl font-bold text-purple-600">{{ statistics.median }}</div>
                    <div class="text-sm text-gray-500">Médiane</div>
                </div>
                <div class="text-center">
                    <div class="text-2xl font-bold text-red-600">{{ statistics.min }}</div>
                    <div class="text-sm text-gray-500">Minimum</div>
                </div>
                <div class="text-center">
                    <div class="text-2xl font-bold text-green-600">{{ statistics.max }}</div>
                    <div class="text-sm text-gray-500">Maximum</div>
                </div>
                <div class="text-center">
                    <div class="text-2xl font-bold text-orange-600">{{ statistics.std_dev }}</div>
                    <div class="text-sm text-gray-500">Écart-type</div>
                </div>
            </div>
            <div class="mt-4 text-sm text-gray-600 text-center">
                Total des points de l'évaluation : {{ "%.1f"|format(total_max_points) }}
            </div>
        </div>
    </div>
    
    <!-- Bouton d'envoi des bilans -->
    <div class="flex justify-end mb-6">
        <button id="sendReportsBtn" onclick="openSendReportsModal()" 
                class="inline-flex items-center px-6 py-3 bg-blue-600 text-white font-semibold rounded-lg hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 transition-colors">
            <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 8l7.89 4.26a2 2 0 002.22 0L21 8M5 19h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/>
            </svg>
            📧 Envoyer les bilans par email
        </button>
    </div>
    
    <!-- Histogramme des notes -->
    <div class="bg-white shadow rounded-lg">
        <div class="px-6 py-4 border-b border-gray-200">
            <h2 class="text-lg font-medium text-gray-900">Distribution des notes</h2>
        </div>
        <div class="px-6 py-4">
            <canvas id="scoresChart" width="400" height="200"></canvas>
        </div>
    </div>
    
    <!-- Tableau par compétences -->
    {% if heatmap_competences %}
    <div class="bg-white shadow rounded-lg">
        <div class="px-6 py-4 border-b border-gray-200">
            <h2 class="text-lg font-medium text-gray-900">Performance par compétence</h2>
            <p class="text-sm text-gray-600 mt-1">Scores moyens de chaque élève par compétence (%) - Cliquez sur les en-têtes pour trier</p>
        </div>
        <div class="px-6 py-4">
            <div class="overflow-x-auto">
                <table class="min-w-full sortable-table" id="competencesTable">
                    <thead>
                        <tr class="bg-gray-50">
                            <th class="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider sticky left-0 bg-gray-50 sortable cursor-pointer hover:bg-gray-100" onclick="sortTable('competencesTable', 0)">
                                Élève
                                <span class="sort-arrow ml-1">⇅</span>
                            </th>
                            {% for competence in heatmap_competences.competences %}
                            <th class="px-3 py-2 text-center text-xs font-medium text-gray-500 uppercase tracking-wider min-w-24 sortable cursor-pointer hover:bg-gray-100"
                                style="color: {{ heatmap_competences.colors[competence] }}"
                                onclick="sortTable('competencesTable', {{ loop.index }})">
                                {{ competence }}
                                <span class="sort-arrow ml-1">⇅</span>
                            </th>
                            {% endfor %}
                        </tr>
                    </thead>
                    <tbody>
                        {% for student_index in range(heatmap_competences.students|length) %}
                        <tr class="{% if loop.index0 % 2 == 0 %}bg-white{% else %}bg-gray-50{% endif %}">
                            <td class="px-3 py-2 text-sm font-medium text-gray-900 sticky left-0 {% if loop.index0 % 2 == 0 %}bg-white{% else %}bg-gray-50{% endif %}">
                                {{ heatmap_competences.students[student_index] }}
                            </td>
                            {% for competence_index in range(heatmap_competences.competences|length) %}
                            {% set score = heatmap_competences.scores[student_index][competence_index] %}
                            {% set special_value = heatmap_competences.special_values[student_index][competence_index] %}
                            <td class="px-3 py-2 text-center text-sm"
                                {% if special_value and special_value in heatmap_grading_elements.scale_colors %}
                                {# Utiliser la couleur de la valeur spéciale #}
                                style="background-color: {{ heatmap_grading_elements.scale_colors[special_value].color }};
                                       color: {% if heatmap_grading_elements.scale_colors[special_value].color in ['#ef4444', '#f97316', '#3b82f6', '#8b5cf6'] %}white{% else %}black{% endif %};"
                                {% elif score is not none %}
                                {# Utiliser le gradient pour les scores normaux #}
                                style="background-color: {{ '#ef4444' if score <= 25 else ('#f97316' if score <= 50 else ('#eab308' if score <= 75 else '#22c55e')) }};
                                       color: {{ 'white' if score <= 50 else 'black' }};"
                                {% endif %}>
                                {% if special_value and special_value in heatmap_grading_elements.scale_colors %}
                                    {{ special_value }}
                                {% elif score is not none %}
                                    {{ "%.1f"|format(score) }}%
                                {% else %}
                                    <span class="text-gray-400">-</span>
                                {% endif %}
                            </td>
                            {% endfor %}
                        </tr>
                        {% endfor %}
                    </tbody>
                </table>
            </div>
            <div class="mt-4 space-y-2">
                <div class="flex justify-center">
                    <div class="flex items-center space-x-4 text-xs">
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-red-500 mr-1"></div>
                            <span>0-25%</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-orange-500 mr-1"></div>
                            <span>26-50%</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-yellow-500 mr-1"></div>
                            <span>51-75%</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-green-500 mr-1"></div>
                            <span>76-100%</span>
                        </div>
                    </div>
                </div>
                <div class="flex justify-center">
                    <span class="text-xs text-gray-600">Les valeurs spéciales (., a, d, etc.) apparaissent avec leurs couleurs configurées</span>
                </div>
            </div>
        </div>
    </div>
    {% endif %}
    
    <!-- Tableau par domaines -->
    {% if heatmap_domains %}
    <div class="bg-white shadow rounded-lg">
        <div class="px-6 py-4 border-b border-gray-200">
            <h2 class="text-lg font-medium text-gray-900">Performance par domaine</h2>
            <p class="text-sm text-gray-600 mt-1">Scores moyens de chaque élève par domaine (%) - Cliquez sur les en-têtes pour trier</p>
        </div>
        <div class="px-6 py-4">
            <div class="overflow-x-auto">
                <table class="min-w-full sortable-table" id="domainsTable">
                    <thead>
                        <tr class="bg-gray-50">
                            <th class="px-3 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider sticky left-0 bg-gray-50 sortable cursor-pointer hover:bg-gray-100" onclick="sortTable('domainsTable', 0)">
                                Élève
                                <span class="sort-arrow ml-1">⇅</span>
                            </th>
                            {% for domain in heatmap_domains.domains %}
                            <th class="px-3 py-2 text-center text-xs font-medium text-gray-500 uppercase tracking-wider min-w-24 sortable cursor-pointer hover:bg-gray-100"
                                style="color: {{ heatmap_domains.colors[domain] }}"
                                onclick="sortTable('domainsTable', {{ loop.index }})">
                                {{ domain }}
                                <span class="sort-arrow ml-1">⇅</span>
                            </th>
                            {% endfor %}
                        </tr>
                    </thead>
                    <tbody>
                        {% for student_index in range(heatmap_domains.students|length) %}
                        <tr class="{% if loop.index0 % 2 == 0 %}bg-white{% else %}bg-gray-50{% endif %}">
                            <td class="px-3 py-2 text-sm font-medium text-gray-900 sticky left-0 {% if loop.index0 % 2 == 0 %}bg-white{% else %}bg-gray-50{% endif %}">
                                {{ heatmap_domains.students[student_index] }}
                            </td>
                            {% for domain_index in range(heatmap_domains.domains|length) %}
                            {% set score = heatmap_domains.scores[student_index][domain_index] %}
                            {% set special_value = heatmap_domains.special_values[student_index][domain_index] %}
                            <td class="px-3 py-2 text-center text-sm"
                                {% if special_value and special_value in heatmap_grading_elements.scale_colors %}
                                {# Utiliser la couleur de la valeur spéciale #}
                                style="background-color: {{ heatmap_grading_elements.scale_colors[special_value].color }};
                                       color: {% if heatmap_grading_elements.scale_colors[special_value].color in ['#ef4444', '#f97316', '#3b82f6', '#8b5cf6'] %}white{% else %}black{% endif %};"
                                {% elif score is not none %}
                                {# Utiliser le gradient pour les scores normaux #}
                                style="background-color: {{ '#ef4444' if score <= 25 else ('#f97316' if score <= 50 else ('#eab308' if score <= 75 else '#22c55e')) }};
                                       color: {{ 'white' if score <= 50 else 'black' }};"
                                {% endif %}>
                                {% if special_value and special_value in heatmap_grading_elements.scale_colors %}
                                    {{ special_value }}
                                {% elif score is not none %}
                                    {{ "%.1f"|format(score) }}%
                                {% else %}
                                    <span class="text-gray-400">-</span>
                                {% endif %}
                            </td>
                            {% endfor %}
                        </tr>
                        {% endfor %}
                    </tbody>
                </table>
            </div>
            <div class="mt-4 space-y-2">
                <div class="flex justify-center">
                    <div class="flex items-center space-x-4 text-xs">
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-red-500 mr-1"></div>
                            <span>0-25%</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-orange-500 mr-1"></div>
                            <span>26-50%</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-yellow-500 mr-1"></div>
                            <span>51-75%</span>
                        </div>
                        <div class="flex items-center">
                            <div class="w-4 h-4 bg-green-500 mr-1"></div>
                            <span>76-100%</span>
                        </div>
                    </div>
                </div>
                <div class="flex justify-center">
                    <span class="text-xs text-gray-600">Les valeurs spéciales (., a, d, etc.) apparaissent avec leurs couleurs configurées</span>
                </div>
            </div>
        </div>
    </div>
    {% endif %}
    
    <!-- Tableau par éléments de notation -->
    {% if heatmap_grading_elements %}
    <div class="bg-white shadow rounded-lg">
        <div class="px-6 py-4 border-b border-gray-200">
            <h2 class="text-lg font-medium text-gray-900">Performance par élément de notation</h2>
            <p class="text-sm text-gray-600 mt-1">Détail des scores de chaque élève sur chaque question/compétence - Cliquez sur les en-têtes pour trier</p>
        </div>
        <div class="px-6 py-4">
            <div class="overflow-x-auto">
                <table class="min-w-full text-xs sortable-table" id="elementsTable">
                    <thead>
                        <tr class="bg-gray-50">
                            <th class="px-2 py-2 text-left text-xs font-medium text-gray-500 uppercase tracking-wider sticky left-0 bg-gray-50 min-w-32 sortable cursor-pointer hover:bg-gray-100" onclick="sortTable('elementsTable', 0)">
                                Élève
                                <span class="sort-arrow ml-1">⇅</span>
                            </th>
                            {% for element in heatmap_grading_elements.elements %}
                            <th class="px-1 py-2 text-center text-xs font-medium text-gray-500 uppercase tracking-wider min-w-20 sortable cursor-pointer hover:bg-gray-100"
                                style="color: {{ heatmap_grading_elements.colors[element] }}"
                                title="{{ element }}"
                                onclick="sortTable('elementsTable', {{ loop.index }})">
                                {{ element|truncate(12, True) }}
                                <span class="sort-arrow ml-1">⇅</span>
                            </th>
                            {% endfor %}
                        </tr>
                    </thead>
                    <tbody>
                        {% for student_index in range(heatmap_grading_elements.students|length) %}
                        <tr class="{% if loop.index0 % 2 == 0 %}bg-white{% else %}bg-gray-50{% endif %}">
                            <td class="px-2 py-2 text-xs font-medium text-gray-900 sticky left-0 {% if loop.index0 % 2 == 0 %}bg-white{% else %}bg-gray-50{% endif %}">
                                {{ heatmap_grading_elements.students[student_index] }}
                            </td>
                            {% for element_index in range(heatmap_grading_elements.elements|length) %}
                            {% set grade_data = heatmap_grading_elements.detailed_scores[student_index][element_index] %}
                            <td class="px-1 py-2 text-center text-xs"
                                {% if grade_data %}
                                {% if grade_data.value in heatmap_grading_elements.scale_colors %}
                                style="background-color: {{ heatmap_grading_elements.scale_colors[grade_data.value].color }};
                                       color: {% if heatmap_grading_elements.scale_colors[grade_data.value].color in ['#ef4444', '#f97316', '#3b82f6', '#8b5cf6'] %}white{% else %}black{% endif %};"
                                {% elif grade_data.grading_type == 'notes' %}
                                {% set percentage = (grade_data.value|float / grade_data.max_points) * 100 %}
                                style="background-color: {{ '#ef4444' if percentage <= 25 else ('#f97316' if percentage <= 50 else ('#eab308' if percentage <= 75 else '#22c55e')) }};
                                       color: {{ 'white' if percentage <= 50 else 'black' }};"
                                {% endif %}
                                {% endif %}>
                                {% if grade_data %}
                                    {{ grade_data.value }}
                                {% else %}
                                    <span class="text-gray-400">-</span>
                                {% endif %}
                            </td>
                            {% endfor %}
                        </tr>
                        {% endfor %}
                    </tbody>
                </table>
            </div>
            <div class="mt-4 space-y-2">
                <div class="flex justify-center">
                    <div class="text-sm font-medium text-gray-700 mb-2">Échelle de notation :</div>
                </div>
                <div class="flex justify-center flex-wrap gap-4 text-xs">
                    {% for value, config in heatmap_grading_elements.scale_colors.items() %}
                    <div class="flex items-center">
                        <div class="w-4 h-4 mr-1" style="background-color: {{ config.color }}"></div>
                        <span>{{ value }}: {{ config.label }}</span>
                    </div>
                    {% endfor %}
                </div>
                <div class="flex justify-center mt-2">
                    <span class="text-xs text-gray-600">Notes numériques : dégradé rouge (faible) → vert (élevé)</span>
                </div>
            </div>
        </div>
    </div>
    {% endif %}
    
    <!-- Tableau des résultats -->
    <div class="bg-white shadow rounded-lg">
        <div class="px-6 py-4 border-b border-gray-200">
            <h2 class="text-lg font-medium text-gray-900">Résultats par élève</h2>
            <p class="text-sm text-gray-600 mt-1">Cliquez sur les en-têtes pour trier</p>
        </div>
        <div class="overflow-x-auto">
            <table class="min-w-full divide-y divide-gray-200 sortable-table" id="detailsTable">
                <thead class="bg-gray-50">
                    <tr>
                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider sortable cursor-pointer hover:bg-gray-100" onclick="sortTable('detailsTable', 0)">
                            Élève
                            <span class="sort-arrow ml-1">⇅</span>
                        </th>
                        <th class="px-6 py-3 text-center text-xs font-medium text-gray-500 uppercase tracking-wider sortable cursor-pointer hover:bg-gray-100" onclick="sortTable('detailsTable', 1)">
                            Note totale
                            <span class="sort-arrow ml-1">⇅</span>
                        </th>
                        {% for exercise in assessment.exercises|sort(attribute='order') %}
                        <th class="px-6 py-3 text-center text-xs font-medium text-gray-500 uppercase tracking-wider sortable cursor-pointer hover:bg-gray-100" onclick="sortTable('detailsTable', {{ loop.index + 1 }})">
                            {{ exercise.title }}
                            <span class="sort-arrow ml-1">⇅</span>
                        </th>
                        {% endfor %}
                    </tr>
                </thead>
                <tbody class="bg-white divide-y divide-gray-200">
                    {% for student_data in students_scores %}
                    <tr class="hover:bg-gray-50">
                        <td class="px-6 py-4 whitespace-nowrap">
                            <div class="text-sm font-medium text-gray-900">
                                {{ student_data.student.last_name }} {{ student_data.student.first_name }}
                            </div>
                        </td>
                        <td class="px-6 py-4 whitespace-nowrap text-center">
                            {% if student_data.total_special_display %}
                            <div class="text-sm font-bold px-2 py-1 rounded text-center inline-block"
                                 style="background-color: {{ heatmap_grading_elements.scale_colors[student_data.total_special_display].color }};
                                        color: {% if heatmap_grading_elements.scale_colors[student_data.total_special_display].color in ['#ef4444', '#f97316', '#3b82f6', '#8b5cf6'] %}white{% else %}black{% endif %};">
                                {{ student_data.total_special_display }}
                            </div>
                            {% else %}
                            <div class="text-sm font-bold text-gray-900">
                                {{ "%.1f"|format(student_data.total_score) }} / {{ "%.1f"|format(student_data.total_max_points) }}
                            </div>
                            {% endif %}
                        </td>
                        {% for exercise in assessment.exercises|sort(attribute='order') %}
                        <td class="px-6 py-4 whitespace-nowrap text-center">
                            {% if exercise.id in student_data.exercises %}
                                {% set exercise_data = student_data.exercises[exercise.id] %}
                                {% if exercise_data.special_display %}
                                <div class="text-sm px-2 py-1 rounded text-center inline-block"
                                     style="background-color: {{ heatmap_grading_elements.scale_colors[exercise_data.special_display].color }};
                                            color: {% if heatmap_grading_elements.scale_colors[exercise_data.special_display].color in ['#ef4444', '#f97316', '#3b82f6', '#8b5cf6'] %}white{% else %}black{% endif %};">
                                    {{ exercise_data.special_display }}
                                </div>
                                {% else %}
                                <div class="text-sm text-gray-900">
                                    {{ "%.1f"|format(exercise_data.score) }} / {{ "%.1f"|format(exercise_data.max_points) }}
                                </div>
                                {% endif %}
                            {% else %}
                                <div class="text-sm text-gray-900">-</div>
                            {% endif %}
                        </td>
                        {% endfor %}
                    </tr>
                    {% endfor %}
                </tbody>
            </table>
        </div>
    </div>
</div>

<!-- Chart.js -->
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<script>
document.addEventListener('DOMContentLoaded', function() {
    const ctx = document.getElementById('scoresChart').getContext('2d');
    const scores = {{ scores_json | tojson }};
    
    // Récupérer les données des élèves avec leurs noms et scores
    const studentsData = [
        {% for student_data in students_scores %}
        {
            name: "{{ student_data.student.last_name }} {{ student_data.student.first_name }}",
            score: {{ student_data.total_score }}
        }{% if not loop.last %},{% endif %}
        {% endfor %}
    ];
    
    // Créer les intervalles pour l'histogramme
    const totalMaxPoints = {{ total_max_points }};
    const minScore = 0;
    const maxScore = totalMaxPoints;
    const binWidth = 1; // Groupes de 1 point
    const numBins = Math.ceil(maxScore - minScore); // Nombre de bins basé sur le total des points
    
    const bins = [];
    const labels = [];
    const studentsInBins = []; // Nouveau: stocker les élèves pour chaque bin
    
    for (let i = 0; i < numBins; i++) {
        const binStart = minScore + i * binWidth;
        const binEnd = minScore + (i + 1) * binWidth;
        bins.push(0);
        labels.push(`${binStart.toFixed(0)} - ${binEnd.toFixed(0)}`);
        studentsInBins.push([]); // Initialiser la liste d'élèves pour ce bin
    }
    
    // Compter les scores dans chaque intervalle et stocker les noms des élèves
    studentsData.forEach(student => {
        let binIndex = Math.floor((student.score - minScore) / binWidth);
        if (binIndex >= numBins) binIndex = numBins - 1; // Pour le score maximum
        if (binIndex >= 0) {
            bins[binIndex]++;
            studentsInBins[binIndex].push(`${student.name} (${student.score.toFixed(1)})`);
        }
    });
    
    new Chart(ctx, {
        type: 'bar',
        data: {
            labels: labels,
            datasets: [{
                label: 'Nombre d\'élèves',
                data: bins,
                backgroundColor: 'rgba(59, 130, 246, 0.5)',
                borderColor: 'rgba(59, 130, 246, 1)',
                borderWidth: 1
            }]
        },
        options: {
            responsive: true,
            plugins: {
                title: {
                    display: true,
                    text: 'Distribution des notes'
                },
                legend: {
                    display: false
                },
                tooltip: {
                    callbacks: {
                        title: function(tooltipItems) {
                            const binIndex = tooltipItems[0].dataIndex;
                            return labels[binIndex];
                        },
                        label: function(tooltipItem) {
                            const binIndex = tooltipItem.dataIndex;
                            const count = bins[binIndex];
                            const students = studentsInBins[binIndex];
                            
                            if (count === 0) {
                                return 'Aucun élève';
                            } else if (count === 1) {
                                return '1 élève : ' + students[0];
                            } else {
                                return `${count} élèves : ${students.join(', ')}`;
                            }
                        }
                    },
                    maxWidth: 400,
                    bodyFont: {
                        size: 12
                    },
                    titleFont: {
                        size: 13,
                        weight: 'bold'
                    }
                }
            },
            scales: {
                y: {
                    beginAtZero: true,
                    ticks: {
                        stepSize: 1
                    },
                    title: {
                        display: true,
                        text: 'Nombre d\'élèves'
                    }
                },
                x: {
                    title: {
                        display: true,
                        text: 'Intervalles de notes'
                    }
                }
            }
        }
    });
});

// === FONCTIONNALITÉ D'ENVOI DE BILANS ===

let eligibleStudents = [];
let selectedStudents = [];

// Charger les élèves éligibles au chargement de la page
document.addEventListener('DOMContentLoaded', function() {
    loadEligibleStudents();
});

function loadEligibleStudents() {
    fetch(`/assessments/{{ assessment.id }}/eligible-students`)
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                eligibleStudents = data.students;
                updateSendReportsButton(data.with_email_count, data.total_count);
            } else {
                console.error('Erreur lors du chargement des élèves:', data.error);
            }
        })
        .catch(error => {
            console.error('Erreur réseau:', error);
        });
}

function updateSendReportsButton(withEmailCount, totalCount) {
    const btn = document.getElementById('sendReportsBtn');
    if (withEmailCount === 0) {
        btn.disabled = true;
        btn.classList.add('opacity-50', 'cursor-not-allowed');
        btn.classList.remove('hover:bg-blue-700');
        btn.innerHTML = `
            <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
            </svg>
            Aucune adresse email configurée
        `;
    } else {
        btn.innerHTML = `
            <svg class="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 8l7.89 4.26a2 2 0 002.22 0L21 8M5 19h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/>
            </svg>
            📧 Envoyer les bilans (${withEmailCount}/${totalCount} avec email)
        `;
    }
}

function openSendReportsModal() {
    if (eligibleStudents.length === 0) {
        alert('Aucun élève éligible trouvé');
        return;
    }
    
    document.getElementById('sendReportsModal').classList.remove('hidden');
    populateStudentsList();
}

function closeSendReportsModal() {
    document.getElementById('sendReportsModal').classList.add('hidden');
    selectedStudents = [];
}

function populateStudentsList() {
    const container = document.getElementById('studentsList');
    const studentsWithEmail = eligibleStudents.filter(s => s.has_email);
    
    if (studentsWithEmail.length === 0) {
        container.innerHTML = '<p class="text-gray-500 text-center py-4">Aucun élève avec adresse email configurée</p>';
        return;
    }
    
    container.innerHTML = studentsWithEmail.map(student => `
        <label class="flex items-center p-3 hover:bg-gray-50 rounded-lg cursor-pointer">
            <input type="checkbox" 
                   value="${student.id}" 
                   onchange="updateSelectedStudents()"
                   class="h-4 w-4 text-blue-600 focus:ring-blue-500 border-gray-300 rounded mr-3">
            <div class="flex-1">
                <div class="font-medium text-gray-900">${student.full_name}</div>
                <div class="text-sm text-gray-500">${student.email}</div>
            </div>
        </label>
    `).join('');
    
    // Sélectionner tous par défaut
    selectAllStudents();
}

function selectAllStudents() {
    const checkboxes = document.querySelectorAll('#studentsList input[type="checkbox"]');
    checkboxes.forEach(cb => cb.checked = true);
    updateSelectedStudents();
}

function unselectAllStudents() {
    const checkboxes = document.querySelectorAll('#studentsList input[type="checkbox"]');
    checkboxes.forEach(cb => cb.checked = false);
    updateSelectedStudents();
}

function updateSelectedStudents() {
    const checkboxes = document.querySelectorAll('#studentsList input[type="checkbox"]:checked');
    selectedStudents = Array.from(checkboxes).map(cb => parseInt(cb.value));
    
    const count = selectedStudents.length;
    document.getElementById('selectedCount').textContent = count;
    document.getElementById('sendReportsSubmitBtn').disabled = count === 0;
}

function sendReports() {
    if (selectedStudents.length === 0) {
        alert('Veuillez sélectionner au moins un élève');
        return;
    }
    
    const customMessage = document.getElementById('customMessage').value.trim();
    const submitBtn = document.getElementById('sendReportsSubmitBtn');
    const originalText = submitBtn.innerHTML;
    
    // Désactiver le bouton et afficher le loading
    submitBtn.disabled = true;
    submitBtn.innerHTML = `
        <svg class="animate-spin -ml-1 mr-3 h-5 w-5 text-white" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
            <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
            <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
        </svg>
        Envoi en cours...
    `;
    
    // Envoyer la requête
    fetch(`/assessments/{{ assessment.id }}/send-reports`, {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({
            student_ids: selectedStudents,
            custom_message: customMessage
        })
    })
    .then(response => response.json())
    .then(data => {
        // Restaurer le bouton
        submitBtn.disabled = false;
        submitBtn.innerHTML = originalText;
        
        if (data.success) {
            // Afficher le résultat
            showSendResult(data);
            // Fermer la modal après un délai
            setTimeout(() => {
                closeSendReportsModal();
            }, 3000);
        } else {
            alert(`Erreur lors de l'envoi: ${data.error}`);
        }
    })
    .catch(error => {
        // Restaurer le bouton en cas d'erreur
        submitBtn.disabled = false;
        submitBtn.innerHTML = originalText;
        console.error('Erreur:', error);
        alert('Erreur réseau lors de l\'envoi des bilans');
    });
}

function showSendResult(result) {
    const resultDiv = document.getElementById('sendResult');
    
    let content = `<div class="mb-4">
        <h3 class="text-lg font-medium ${result.success ? 'text-green-600' : 'text-red-600'} mb-2">
            ${result.message}
        </h3>
    </div>`;
    
    if (result.sent_count > 0) {
        content += `<div class="mb-3">
            <p class="text-green-600">✅ ${result.sent_count} bilan(s) envoyé(s) avec succès</p>
        </div>`;
    }
    
    if (result.error_count > 0) {
        content += `<div class="mb-3">
            <p class="text-red-600 font-medium">❌ ${result.error_count} erreur(s):</p>
            <ul class="text-sm text-red-600 mt-2 max-h-32 overflow-y-auto">`;
        
        result.errors.forEach(error => {
            content += `<li class="py-1">• ${error}</li>`;
        });
        
        content += `</ul></div>`;
    }
    
    resultDiv.innerHTML = content;
    resultDiv.classList.remove('hidden');
    
    // Cacher les autres sections
    document.getElementById('studentsSelection').classList.add('hidden');
    document.getElementById('modalActions').classList.add('hidden');
}

// Fermer la modal en cliquant à côté
document.addEventListener('click', function(e) {
    const modal = document.getElementById('sendReportsModal');
    if (e.target === modal) {
        closeSendReportsModal();
    }
});

// === FONCTIONNALITÉ DE TRI DES TABLEAUX ===

function sortTable(tableId, columnIndex) {
    const table = document.getElementById(tableId);
    const tbody = table.querySelector('tbody');
    const rows = Array.from(tbody.rows);
    const isNumeric = checkIfNumericColumn(rows, columnIndex);

    // Déterminer la direction du tri
    const currentDirection = table.dataset.sortDirection || 'none';
    const newDirection = currentDirection === 'asc' ? 'desc' : 'asc';
    table.dataset.sortDirection = newDirection;
    table.dataset.sortColumn = columnIndex;

    // Tri des lignes
    rows.sort((a, b) => {
        let aVal = getCellValue(a, columnIndex);
        let bVal = getCellValue(b, columnIndex);

        if (isNumeric) {
            aVal = parseFloat(aVal) || 0;
            bVal = parseFloat(bVal) || 0;
        } else {
            aVal = aVal.toLowerCase();
            bVal = bVal.toLowerCase();
        }

        if (aVal < bVal) return newDirection === 'asc' ? -1 : 1;
        if (aVal > bVal) return newDirection === 'asc' ? 1 : -1;
        return 0;
    });

    // Réorganiser les lignes dans le tableau
    rows.forEach(row => tbody.appendChild(row));

    // Mettre à jour les indicateurs visuels
    updateSortIndicators(table, columnIndex, newDirection);
}

function getCellValue(row, columnIndex) {
    const cell = row.cells[columnIndex];
    if (!cell) return '';

    // Pour les cellules avec des couleurs de fond (valeurs spéciales), extraire le texte
    let text = cell.textContent.trim();

    // Nettoyer les valeurs numériques (enlever %, /X, etc.)
    text = text.replace(/[%\/]/g, '').split(/[\s\/]/)[0];

    return text;
}

function checkIfNumericColumn(rows, columnIndex) {
    if (rows.length === 0) return false;

    // Vérifier les 5 premières lignes pour déterminer si c'est numérique
    const sampleSize = Math.min(5, rows.length);
    let numericCount = 0;

    for (let i = 0; i < sampleSize; i++) {
        const value = getCellValue(rows[i], columnIndex);
        if (value && !isNaN(parseFloat(value))) {
            numericCount++;
        }
    }

    return numericCount >= sampleSize / 2;
}

function updateSortIndicators(table, columnIndex, direction) {
    // Réinitialiser tous les indicateurs
    const headers = table.querySelectorAll('th.sortable');
    headers.forEach(header => {
        const arrow = header.querySelector('.sort-arrow');
        if (arrow) {
            arrow.textContent = '⇅';
        }
    });

    // Mettre à jour l'indicateur de la colonne triée
    const currentHeader = headers[columnIndex];
    if (currentHeader) {
        const arrow = currentHeader.querySelector('.sort-arrow');
        if (arrow) {
            arrow.textContent = direction === 'asc' ? '▲' : '▼';
        }
    }
}
</script>

<!-- Modal d'envoi des bilans -->
<div id="sendReportsModal" class="hidden fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full z-50">
    <div class="relative top-20 mx-auto p-5 border w-11/12 max-w-2xl shadow-lg rounded-md bg-white">
        <div class="mt-3">
            <!-- En-tête -->
            <div class="flex justify-between items-center pb-4 border-b">
                <h3 class="text-lg font-medium text-gray-900">📧 Envoyer les bilans par email</h3>
                <button onclick="closeSendReportsModal()" class="text-gray-400 hover:text-gray-600">
                    <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
                    </svg>
                </button>
            </div>
            
            <!-- Sélection des élèves -->
            <div id="studentsSelection" class="py-4">
                <div class="flex justify-between items-center mb-4">
                    <h4 class="font-medium text-gray-900">Sélectionner les élèves</h4>
                    <div class="flex space-x-2">
                        <button onclick="selectAllStudents()" 
                                class="text-sm text-blue-600 hover:text-blue-800">Tout sélectionner</button>
                        <span class="text-gray-300">|</span>
                        <button onclick="unselectAllStudents()" 
                                class="text-sm text-blue-600 hover:text-blue-800">Tout désélectionner</button>
                    </div>
                </div>
                
                <div id="studentsList" class="max-h-64 overflow-y-auto border border-gray-200 rounded-lg p-2 space-y-1">
                    <!-- Les élèves seront ajoutés ici par JavaScript -->
                </div>
                
                <p class="text-sm text-gray-600 mt-2">
                    <span id="selectedCount">0</span> élève(s) sélectionné(s)
                </p>
            </div>
            
            <!-- Message personnalisé -->
            <div class="py-4 border-t">
                <label for="customMessage" class="block text-sm font-medium text-gray-700 mb-2">
                    Message personnalisé (optionnel)
                </label>
                <textarea id="customMessage" 
                          rows="3" 
                          placeholder="Message du professeur à ajouter dans les bilans..."
                          class="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"></textarea>
            </div>
            
            <!-- Résultat de l'envoi -->
            <div id="sendResult" class="hidden py-4 border-t">
                <!-- Le résultat sera affiché ici -->
            </div>
            
            <!-- Actions -->
            <div id="modalActions" class="flex justify-end space-x-3 pt-4 border-t">
                <button onclick="closeSendReportsModal()" 
                        class="px-4 py-2 text-sm font-medium text-gray-700 bg-white border border-gray-300 rounded-md hover:bg-gray-50">
                    Annuler
                </button>
                <button id="sendReportsSubmitBtn" onclick="sendReports()" 
                        class="px-4 py-2 text-sm font-medium text-white bg-blue-600 border border-transparent rounded-md hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
                        disabled>
                    📧 Envoyer les bilans
                </button>
            </div>
        </div>
    </div>
</div>

{% endblock %}