{% extends 'base.html' %}
{% block content %}
{% load static %}
{% load temps_format %}
<div class="container-fluid mt-4">
    <div class="row">
        <div class="col-12">
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Gestion de la course</h6>
                </div>
                <div class="card-body">
                    <form method="post">
                        {% csrf_token %}
                        {% if not is_started %}
                            <button type="submit" name="start" class="btn btn-success">Départ 
                                <i  class="fa-solid fa-play"></i>
                            </button>
                        {% elif not is_finished %}
                            <button type="button" id="btnFinish" class="btn btn-danger">Fin course 
                                    <i class="fa-solid fa-stop"></i>
                            </button>
                            <a href="{% url 'scan' %}?course_id={{ course.id }}" class="btn btn-info ml-2">Accès au scan <i class="fas fa-qrcode"></i></a>
                            <!-- Modal confirmation fin de course -->
                            <div class="modal fade" id="finishModal" tabindex="-1" role="dialog" aria-labelledby="finishModalLabel" aria-hidden="true">
                                <div class="modal-dialog" role="document">
                                    <div class="modal-content">
                                        <div class="modal-header">
                                            <h5 class="modal-title" id="finishModalLabel">Confirmer la fin de la course</h5>
                                            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                                <span aria-hidden="true">&times;</span>
                                            </button>
                                        </div>
                                        <div class="modal-body">
                                            Êtes-vous sûr de vouloir terminer la course ? Cette action est irréversible.
                                        </div>
                                        <div class="modal-footer">
                                            <form method="post" style="margin:0;">
                                                {% csrf_token %}
                                                <button type="submit" name="finish" class="btn btn-danger">Valider la fin</button>
                                            </form>
                                            <button type="button" class="btn btn-secondary" data-dismiss="modal">Annuler</button>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        {% else %}
                            <span class="badge badge-secondary">Course terminée</span>
                        {% endif %}
                    </form>
                </div>
            </div>
            <div class="card shadow mb-4">
                <div class="card-header py-3 d-flex justify-content-between align-items-center">
                    <h6 class="m-0 font-weight-bold text-primary">Arrivées</h6>
                    <div>
                        {% if course.type == 'multi' %}
                        <button id="btnGroup" type="button" class="btn btn-info mb-2">Grouper par coureur</button>
                        {% endif %}
                        <form id="exportCsvForm" method="post" action="{% url 'export_csv' course.id %}" style="display:inline;">
                            {% csrf_token %}
                            <input type="hidden" name="rows" id="csvRowsInput">
                            <button type="submit" class="btn btn-success mb-2" id="btnExportCsv">
                                <i class="fas fa-file-csv" title="Exporter en CSV"></i>
                            </button>
                        </form>
                        <form id="exportPdfForm" method="post" action="{% url 'export_pdf' course.id %}" style="display:inline;">
                            {% csrf_token %}
                            <input type="hidden" name="rows" id="pdfRowsInput">
                            <button type="submit" class="btn btn-danger mb-2" id="btnExportPdf">
                                <i class="fas fa-file-pdf" title="Exporter en PDF"></i>
                            </button>
                        </form>
                    </div>
                </div>
                <div class="card-body">
                    <div class="table-responsive">
                        <table class="table table-striped" id="arriveesTable">
                            <thead>
                                <tr>
                                    <th style="width: 1%; white-space: nowrap;">{% if course.type == 'multi' %}Tour{% else %}Rang{% endif %}</th>
                                    <th>Nom</th>
                                    <th>Prénom</th>
                                    <th>Classe</th>
                                    <th>Temps</th>
                                </tr>
                            </thead>
                            <tbody>
                                {% for a in arrivees %}
                                <tr>
                                    <td>{% if course.type == 'multi' %}{{ a.tour }}{% else %}{{ a.rang }}{% endif %}</td>
                                    <td>{{ a.coureur.nom }}</td>
                                    <td>{{ a.coureur.prenom }}</td>
                                    <td>{{ a.coureur.classe }}</td>
                                    <td>{% if a.temps %}{{ a.temps|seconds_to_hms }}{% endif %}</td>
                                </tr>
                                {% empty %}
                                <tr>
                                    <td>Aucun coureur arrivé.</td>
                                    <td></td>
                                    <td></td>
                                    <td></td>
                                    <td></td>
                                </tr>
                                {% endfor %}
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}
{% block extra_js %}
<!-- DataTables JS & CSS -->
<link rel="stylesheet" href="{% static 'bootstrap/dataTables.bootstrap4.min.css' %}">
<script src="{% static 'jquery/jquery.dataTables.min.js' %}"></script>
<script src="{% static 'bootstrap/dataTables.bootstrap4.min.js' %}"></script>
<script src="{% static 'jquery/datatables.fr.js' %}"></script>
<script>
// Style for inserted group header rows
$('<style>').prop('type', 'text/css').html('\n    #arriveesTable tbody tr.group td { background: #f8f9fa; font-weight: 600; }\n').appendTo('head');

const courseId = "{{ course.id }}";
const courseType = "{{ course.type }}";
const wsScheme = window.location.protocol === "https:" ? "wss" : "ws";
const wsUrl = `${wsScheme}://${window.location.host}/ws/course/${courseId}/`;
const socket = new WebSocket(wsUrl);

socket.onmessage = function(e) {
    // Ajoute dynamiquement la nouvelle ligne reçue via WebSocket
    let data;
    try {
        data = JSON.parse(e.data);
    } catch {
        return;
    }

    // Vérifie le format des données reçues
    let rowData;

    if (typeof data === 'object' && data !== null) {
        // Transforme l'objet en tableau dans l'ordre attendu (tour/rang, nom, prenom, classe, temps)
            let firstCell = (courseType === 'multi') ? data.tour : (data.rang || data.tour);
            rowData = [
                firstCell,
                data.nom || (data.coureur && data.coureur.nom),
                data.prenom || (data.coureur && data.coureur.prenom),
                data.classe || (data.coureur && data.coureur.classe),
                data.temps
            ];
    } else {
        // Format inconnu, ignore
        return;
    }
    var dt = $('#arriveesTable').DataTable();
    dt.row.add(rowData).draw(false);
};

// Modal confirmation fin de course (attach handler only if button exists)
var finishBtn = document.getElementById('btnFinish');
if (finishBtn) {
    finishBtn.addEventListener('click', function() {
        $('#finishModal').modal('show');
    });
}

// Initialisation DataTables au chargement
$(document).ready(function() {
    // Initialize DataTable with options
    var groupBy = false;
    var table = $('#arriveesTable').DataTable({
        order: [],
        pageLength: 25,
        drawCallback: function(settings) {
            var api = this.api();
            // Remove previously inserted group rows
            api.rows().nodes().to$().filter('tr.group').remove();
            if (!groupBy) return;
            var rows = api.rows({page:'current'}).nodes();
            var last = null;

            api.column(1, {page:'current'} ).data().each(function(name, i){
                var prenom = api.column(2, {page:'current'} ).data()[i];
                var key = name + '|' + prenom;
                if (last !== key) {
                    $(rows).eq(i).before(
                        '<tr class="group"><td colspan="5">'+ $('<div>').text(name + ' ' + prenom).html() +'</td></tr>'
                    );
                    last = key;
                }
            });
        }
    });

    // Keep the current ordering so we can restore it
    var storedOrder = table.order();
    // Expose grouping state to the global scope so exports can read it
    window.courseGroupBy = groupBy;

    $('#btnGroup').on('click', function(){
        groupBy = !groupBy;
        window.courseGroupBy = groupBy;
        $(this).text(groupBy ? 'Désactiver le groupement' : 'Grouper par coureur');
        if (groupBy) {
            // Sort by Nom (col 1) then Prénom (col 2) to make grouping contiguous
            table.order([[1, 'asc'], [2, 'asc']]);
        } else {
            // Restore previous ordering
            table.order(storedOrder);
        }
        table.draw();
    });
});
// Export CSV/PDF des données filtrées
function getVisibleRows() {
    var dt = $('#arriveesTable').DataTable();
    var rows = dt.rows({search: 'applied'}).data().toArray();
    // If grouping is active, inject group-header marker rows into the exported data
    try {
        if (window.courseGroupBy) {
            var output = [];
            var lastKey = null;
            for (var i = 0; i < rows.length; i++) {
                var name = rows[i][1] || '';
                var prenom = rows[i][2] || '';
                var key = name + '|' + prenom;
                if (key !== lastKey) {
                    // marker row: first cell '__GROUP__', second cell holds the group label
                    output.push(['__GROUP__', name + ' ' + prenom, '', '', '']);
                    lastKey = key;
                }
                output.push(rows[i]);
            }
            return JSON.stringify(output);
        }
    } catch (e) {
        // fallback to default rows if anything goes wrong
    }
    return JSON.stringify(rows);
}

$('#exportCsvForm').on('submit', function(e) {
    $('#csvRowsInput').val(getVisibleRows());
});

$('#exportPdfForm').on('submit', function(e) {
    $('#pdfRowsInput').val(getVisibleRows());
});
</script>
{% endblock %}