{% extends 'admin_base.html.twig' %}

{% block title %}Warteliste{% endblock %}
{% block header_title %}Warteliste verwalten{% endblock %}

{% block stylesheets %}
<style>
    .nav-pills {
        background: #f8f9fc;
        padding: 0.5rem;
        border-radius: 10px;
        display: inline-flex;
        gap: 0.5rem;
    }
    
    .nav-pills .nav-link {
        border-radius: 8px;
        padding: 0.75rem 1.5rem;
        font-weight: 600;
        color: #858796;
        transition: all 0.2s;
    }
    
    .nav-pills .nav-link.active {
        background: linear-gradient(135deg, #4e73df, #375fc7);
        color: #fff;
        box-shadow: 0 2px 8px rgba(78, 115, 223, 0.3);
    }
    
    .table-modern {
        font-size: 0.9rem;
    }
    
    .table-modern thead th {
        background: linear-gradient(135deg, #1a1d2e 0%, #252938 100%);
        color: #fff;
        font-weight: 600;
        border: none;
        padding: 1rem;
        font-size: 0.85rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    
    .table-modern tbody tr {
        transition: all 0.2s;
    }
    
    .table-modern tbody tr:hover {
        background: #f8f9fc;
        transform: scale(1.01);
    }
    
    .table-modern tbody td {
        vertical-align: middle;
        padding: 1rem;
    }
    
    .customer-info {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }
    
    .customer-avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: linear-gradient(135deg, #f6c23e, #dda20a);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 600;
        font-size: 0.9rem;
    }
    
    .customer-avatar.archived {
        background: linear-gradient(135deg, #858796, #6e707e);
    }
    
    .customer-details strong {
        display: block;
        color: #5a5c69;
    }
    
    .customer-details small {
        color: #858796;
    }
    
    .course-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
        background: #f8f9fc;
        border-radius: 8px;
        font-weight: 600;
    }
    
    .course-badge.archived {
        background: #e3e6f0;
        color: #858796;
    }
    
    .action-btn {
        width: 32px;
        height: 32px;
        padding: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 6px;
        transition: all 0.2s;
    }
    
    .action-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    }
    
    .stats-mini {
        display: flex;
        gap: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .stat-item {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 1rem 1.5rem;
        background: #fff;
        border-radius: 10px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    }
    
    .stat-icon {
        width: 48px;
        height: 48px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
        color: #fff;
    }
    
    .stat-info strong {
        display: block;
        font-size: 1.5rem;
        color: #5a5c69;
    }
    
    .stat-info span {
        font-size: 0.8rem;
        color: #858796;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    
    .notes-preview {
        max-width: 300px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        color: #858796;
        font-size: 0.85rem;
    }

    .waitlist-group-card .card-header {
        background: rgba(246, 194, 62, 0.1);
    }

    .waitlist-group-card .table thead th {
        background: #f8f9fc;
        color: #5a5c69;
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
</style>
{% endblock %}

{% block content %}
<div class="page-header">
    <div class="d-flex justify-content-between align-items-center">
        <div>
            <h1><i class="fas fa-clock me-2"></i>Warteliste</h1>
            <div class="page-breadcrumb">
                <a href="{{ path('admin_dashboard') }}"><i class="fas fa-home"></i> Dashboard</a>
                <i class="fas fa-chevron-right"></i>
                <span>Warteliste</span>
            </div>
        </div>
        <div>
            <button class="btn btn-success" onclick="exportAllActiveWaitingList()">
                <i class="fas fa-file-excel me-2"></i>Alle aktiven exportieren
            </button>
        </div>
    </div>
</div>


<!-- Tabs -->
<ul class="nav nav-pills mb-4">
    <li class="nav-item">
        <a class="nav-link active" data-status="active" onclick="switchTab('active', this)">
            <i class="fas fa-clock me-2"></i>Aktiv
        </a>
    </li>
    <li class="nav-item">
        <a class="nav-link" data-status="archived" onclick="switchTab('archived', this)">
            <i class="fas fa-archive me-2"></i>Archiviert
        </a>
    </li>
    <li class="nav-item">
        <a class="nav-link" data-status="all" onclick="switchTab('all', this)">
            <i class="fas fa-list me-2"></i>Alle
        </a>
    </li>
</ul>

<!-- Mini Stats -->
<div class="stats-mini">
    <div class="stat-item">
        <div class="stat-icon" style="background: linear-gradient(135deg, #f6c23e, #dda20a);">
            <i class="fas fa-clock"></i>
        </div>
        <div class="stat-info">
            <strong id="totalCount">-</strong>
            <span>Gesamt</span>
        </div>
    </div>
    <div class="stat-item">
        <div class="stat-icon" style="background: linear-gradient(135deg, #1cc88a, #17a673);">
            <i class="fas fa-check-circle"></i>
        </div>
        <div class="stat-info">
            <strong id="activeCount">-</strong>
            <span>Aktiv</span>
        </div>
    </div>
    <div class="stat-item">
        <div class="stat-icon" style="background: linear-gradient(135deg, #858796, #6e707e);">
            <i class="fas fa-archive"></i>
        </div>
        <div class="stat-info">
            <strong id="archivedCount">-</strong>
            <span>Archiviert</span>
        </div>
    </div>
</div>

<!-- Search -->
<div class="card mb-4">
    <div class="card-body">
        <div class="row g-2">
            <div class="col-lg-4">
                <div class="input-group">
                    <span class="input-group-text bg-white">
                        <i class="fas fa-search"></i>
                    </span>
                    <input type="text" class="form-control border-start-0" id="searchInput"
                           placeholder="Suche nach Name, E-Mail oder Telefon..."
                           onkeypress="if(event.key==='Enter') loadWaitingList()">
                </div>
            </div>
            <div class="col-lg-4">
                <select class="form-select" id="courseFilter" onchange="loadWaitingList()">
                    <option value="">Alle Kurse</option>
                    {% for course in courses %}
                        <option value="{{ course.id }}">{{ course.name }}</option>
                    {% endfor %}
                </select>
            </div>
            <div class="col-lg-4 d-flex gap-2">
                <button class="btn btn-primary" onclick="loadWaitingList()">
                    <i class="fas fa-search me-2"></i>Suchen
                </button>
                <button class="btn btn-outline-secondary" onclick="clearSearch()">
                    <i class="fas fa-times"></i>
                </button>
            </div>
        </div>
    </div>
</div>

<!-- Waiting List -->
<div class="card">
    <div class="card-header d-flex justify-content-between align-items-center">
        <span><i class="fas fa-list me-2"></i>Warteliste Einträge (gruppiert)</span>
        <span class="badge bg-warning" id="resultsCount">Wird geladen...</span>
    </div>
    <div class="card-body">
        <div id="waitlistContainer">
            <div class="text-center py-5">
                <div class="spinner-border text-primary" role="status">
                    <span class="visually-hidden">Lädt...</span>
                </div>
                <p class="mt-3 text-muted">Lade Warteliste...</p>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block javascripts %}
<script>
    let currentStatus = 'active';
    let entries = [];
    
    document.addEventListener('DOMContentLoaded', function() {
        loadWaitingList();
    });
    
    function switchTab(status, element) {
        currentStatus = status;
        
        // Update active tab
        document.querySelectorAll('.nav-link').forEach(link => {
            link.classList.remove('active');
        });
        element.classList.add('active');
        
        loadWaitingList();
    }
    
    async function loadWaitingList() {
        const search = document.getElementById('searchInput').value;
        const courseId = document.getElementById('courseFilter')?.value || '';
        
        const params = new URLSearchParams();
        params.append('status', currentStatus);
        if (search) params.append('search', search);
        if (courseId) params.append('courseId', courseId);
        
        try {
            const response = await fetch('{{ path('admin_waiting_list_api_list') }}?' + params.toString());
            const data = await response.json();
            
            if (data.success) {
                entries = data.entries;
                renderEntries(entries);
                updateStats(entries);
            } else {
                showError('Fehler beim Laden der Warteliste');
            }
        } catch (error) {
            console.error('Load error:', error);
            showError('Netzwerkfehler beim Laden der Warteliste');
        }
    }
    
    function renderEntries(data) {
        const container = document.getElementById('waitlistContainer');
        document.getElementById('resultsCount').textContent = data.length + ' Einträge';
        
        if (data.length === 0) {
            container.innerHTML = `
                <div class="text-center py-5">
                    <i class="fas fa-inbox text-muted" style="font-size: 3rem;"></i>
                    <p class="mt-3 text-muted mb-0">Keine Einträge gefunden</p>
                </div>
            `;
            return;
        }

        const groupsMap = new Map();
        data.forEach((entry) => {
            const groupKey = `${entry.isArchived ? 'archived' : 'active'}::${entry.courseId || entry.course}`;
            if (!groupsMap.has(groupKey)) {
                groupsMap.set(groupKey, {
                    key: groupKey,
                    course: entry.course,
                    courseId: entry.courseId || null,
                    courseType: entry.courseType || '-',
                    location: entry.location || '-',
                    isArchived: !!entry.isArchived,
                    entries: []
                });
            }
            groupsMap.get(groupKey).entries.push(entry);
        });

        const groups = Array.from(groupsMap.values());
        container.innerHTML = groups.map(group => `
            <div class="card mb-4 shadow-sm waitlist-group-card">
                <div class="card-header">
                    <div class="d-flex justify-content-between align-items-center">
                        <div>
                            <h5 class="mb-0">
                                <i class="fas ${group.isArchived ? 'fa-archive' : 'fa-chalkboard-teacher'} me-2"></i>${group.course}
                            </h5>
                            <small class="text-muted">
                                ${group.courseType} ${group.location && group.location !== '-' ? `| ${group.location}` : ''}
                            </small>
                        </div>
                        <div class="d-flex align-items-center gap-2">
                            ${group.courseId ? `
                                <button class="btn btn-sm btn-success" onclick="exportCourseWaitingList(${group.courseId}, '${group.course.replace(/'/g, "\\'")}')">
                                    <i class="fas fa-file-excel me-1"></i>Excel
                                </button>
                            ` : ''}
                            <span class="badge ${group.isArchived ? 'bg-secondary' : 'bg-warning text-dark'}">
                                ${group.entries.length} auf Warteliste
                            </span>
                        </div>
                    </div>
                </div>
                <div class="card-body p-0">
                    <div class="table-responsive">
                        <table class="table table-hover mb-0">
                            <thead>
                                <tr>
                                    <th style="width:50px;">#</th>
                                    <th>Person</th>
                                    <th>Kontakt</th>
                                    <th>Eingetragen am</th>
                                    <th>Notizen</th>
                                    <th style="width:150px;">Aktionen</th>
                                </tr>
                            </thead>
                            <tbody>
                                ${group.entries.map((entry, index) => `
                                    <tr>
                                        <td><span class="badge bg-secondary">${index + 1}</span></td>
                                        <td>
                                            <strong>${entry.firstName} ${entry.lastName}</strong>
                                        </td>
                                        <td>
                                            <div><i class="fas fa-envelope me-1 text-muted"></i>${entry.email}</div>
                                            ${entry.phone && entry.phone !== '-' ? `<div class="mt-1"><i class="fas fa-phone me-1 text-muted"></i>${entry.phone}</div>` : ''}
                                        </td>
                                        <td><small>${entry.createdAt}</small></td>
                                        <td>
                                            ${entry.notes ? `<div class="notes-preview" title="${entry.notes}">${entry.notes}</div>` : '<span class="text-muted">-</span>'}
                                        </td>
                                        <td>
                                            <div class="d-flex gap-1">
                                                <button class="btn btn-sm btn-outline-primary action-btn" onclick="viewEntry(${entry.id})" title="Details">
                                                    <i class="fas fa-eye"></i>
                                                </button>
                                                ${!entry.isArchived ? `
                                                    <button class="btn btn-sm btn-outline-success action-btn" onclick="convertToAppointment(${entry.id})" title="In Termin umwandeln">
                                                        <i class="fas fa-calendar-plus"></i>
                                                    </button>
                                                ` : ''}
                                                <button class="btn btn-sm btn-outline-danger action-btn" onclick="deleteEntry(${entry.id})" title="Löschen">
                                                    <i class="fas fa-trash"></i>
                                                </button>
                                            </div>
                                        </td>
                                    </tr>
                                `).join('')}
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        `).join('');
    }
    
    function updateStats(data) {
        document.getElementById('totalCount').textContent = data.length;
        document.getElementById('activeCount').textContent = data.filter(e => !e.isArchived).length;
        document.getElementById('archivedCount').textContent = data.filter(e => e.isArchived).length;
    }
    
    function clearSearch() {
        document.getElementById('searchInput').value = '';
        const courseFilter = document.getElementById('courseFilter');
        if (courseFilter) {
            courseFilter.value = '';
        }
        loadWaitingList();
    }

    function exportWaitingList() {
        const search = document.getElementById('searchInput').value;
        const courseId = document.getElementById('courseFilter')?.value || '';
        const params = new URLSearchParams();
        params.append('status', currentStatus);
        if (search) params.append('search', search);
        if (courseId) params.append('courseId', courseId);

        window.location.href = '{{ path('admin_waiting_list_api_export') }}?' + params.toString();
    }

    function exportCourseWaitingList(courseId, courseName) {
        const search = document.getElementById('searchInput').value;
        const params = new URLSearchParams();
        params.append('status', currentStatus);
        params.append('courseId', String(courseId));
        if (search) params.append('search', search);

        window.location.href = '{{ path('admin_waiting_list_api_export') }}?' + params.toString();
    }

    function exportAllActiveWaitingList() {
        const params = new URLSearchParams();
        params.append('status', 'active');
        window.location.href = '{{ path('admin_waiting_list_api_export') }}?' + params.toString();
    }
    
    function viewEntry(id) {
        const entry = entries.find(e => e.id === id);
        if (!entry) return;

        // Erstelle Modal für Details
        const modalHtml = `
            <div class="modal fade" id="viewEntryModal" tabindex="-1">
                <div class="modal-dialog modal-lg">
                    <div class="modal-content">
                        <div class="modal-header">
                            <h5 class="modal-title">
                                <i class="fas fa-eye me-2"></i>Wartelisteneintrag Details
                            </h5>
                            <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                        </div>
                        <div class="modal-body">
                            <div class="row">
                                <div class="col-md-6">
                                    <h6><i class="fas fa-user me-2"></i>Personendaten</h6>
                                    <table class="table table-sm">
                                        <tr><td><strong>Name:</strong></td><td>${entry.firstName} ${entry.lastName}</td></tr>
                                        <tr><td><strong>E-Mail:</strong></td><td>${entry.email}</td></tr>
                                        <tr><td><strong>Telefon:</strong></td><td>${entry.phone || '-'}</td></tr>
                                        <tr><td><strong>Erstellt am:</strong></td><td>${entry.createdAt}</td></tr>
                                    </table>
                                </div>
                                <div class="col-md-6">
                                    <h6><i class="fas fa-chalkboard-teacher me-2"></i>Kursdaten</h6>
                                    <table class="table table-sm">
                                        <tr><td><strong>Kurs:</strong></td><td>${entry.course}</td></tr>
                                        <tr><td><strong>Typ:</strong></td><td>${entry.courseType || '-'}</td></tr>
                                        <tr><td><strong>Standort:</strong></td><td>${entry.location || '-'}</td></tr>
                                        <tr><td><strong>Status:</strong></td><td>
                                            <span class="badge ${entry.isArchived ? 'bg-secondary' : 'bg-success'}">
                                                ${entry.isArchived ? 'Archiviert' : 'Aktiv'}
                                            </span>
                                        </td></tr>
                                    </table>
                                </div>
                            </div>
                            ${entry.notes ? `
                                <div class="mt-3">
                                    <h6><i class="fas fa-sticky-note me-2"></i>Notizen</h6>
                                    <div class="alert alert-light">
                                        ${entry.notes.replace(/\n/g, '<br>')}
                                    </div>
                                </div>
                            ` : ''}
                        </div>
                        <div class="modal-footer">
                            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">
                                <i class="fas fa-times me-2"></i>Schließen
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        `;

        // Entferne existierendes Modal falls vorhanden
        const existingModal = document.getElementById('viewEntryModal');
        if (existingModal) {
            existingModal.remove();
        }

        // Füge neues Modal hinzu
        document.body.insertAdjacentHTML('beforeend', modalHtml);
        
        // Zeige Modal
        const modal = new bootstrap.Modal(document.getElementById('viewEntryModal'));
        modal.show();
    }
    
    async function convertToAppointment(id) {
        const entry = entries.find(e => e.id === id);
        if (!entry || entry.isArchived) return;

        if (confirm(`Möchten Sie "${entry.firstName} ${entry.lastName}" von der Warteliste in einen Termin umwandeln?`)) {
            try {
                const response = await fetch('{{ path('app_waiting_list_admin_notify', {'id': 'PLACEHOLDER'}) }}'.replace('PLACEHOLDER', id), {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json',
                        'X-Requested-With': 'XMLHttpRequest'
                    },
                    body: JSON.stringify({
                        action: 'convert_to_appointment'
                    })
                });

                const result = await response.json();

                if (result.success) {
                    showSuccess(result.message || 'Wartelisteneintrag erfolgreich in Termin umgewandelt');
                    loadWaitingList(); // Liste neu laden
                } else {
                    showError(result.message || 'Fehler beim Umwandeln in Termin');
                }
            } catch (error) {
                console.error('Convert error:', error);
                showError('Netzwerkfehler beim Umwandeln in Termin');
            }
        }
    }
    
    async function deleteEntry(id) {
        const entry = entries.find(e => e.id === id);
        if (!entry) return;

        const action = entry.isArchived ? 'löschen' : 'archivieren';
        const message = entry.isArchived 
            ? 'Möchten Sie diesen Wartelisten-Eintrag wirklich dauerhaft löschen?'
            : 'Möchten Sie diesen Wartelisten-Eintrag archivieren? (Der Eintrag wird aus der aktiven Liste entfernt, aber nicht gelöscht)';

        if (confirm(message)) {
            try {
                const response = await fetch('{{ path('app_waiting_list_admin_delete', {'id': 'PLACEHOLDER'}) }}'.replace('PLACEHOLDER', id), {
                    method: 'DELETE',
                    headers: {
                        'X-Requested-With': 'XMLHttpRequest'
                    }
                });

                const result = await response.json();

                if (result.success) {
                    showSuccess(`Eintrag erfolgreich ${action === 'archivieren' ? 'archiviert' : 'gelöscht'}`);
                    loadWaitingList(); // Liste neu laden
                } else {
                    showError(result.message || `Fehler beim ${action} des Eintrags`);
                }
            } catch (error) {
                console.error('Delete error:', error);
                showError('Netzwerkfehler beim Löschen des Eintrags');
            }
        }
    }
    
    function showError(message) {
        const container = document.getElementById('waitlistContainer');
        container.innerHTML = `
            <div class="text-center py-5">
                <i class="fas fa-exclamation-triangle text-danger" style="font-size: 3rem;"></i>
                <p class="mt-3 text-danger mb-0">${message}</p>
            </div>
        `;
    }
    
    function showSuccess(message) {
        // Erstelle Toast-Notification
        const toastHtml = `
            <div class="toast align-items-center text-white bg-success border-0" role="alert" aria-live="assertive" aria-atomic="true">
                <div class="d-flex">
                    <div class="toast-body">
                        <i class="fas fa-check-circle me-2"></i>${message}
                    </div>
                    <button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast"></button>
                </div>
            </div>
        `;
        
        // Entferne existierende Toasts
        document.querySelectorAll('.toast').forEach(toast => toast.remove());
        
        // Füge neuen Toast hinzu
        document.body.insertAdjacentHTML('beforeend', toastHtml);
        
        // Zeige Toast
        const toastElement = document.querySelector('.toast');
        const toast = new bootstrap.Toast(toastElement);
        toast.show();
        
        // Entferne Toast nach 5 Sekunden
        setTimeout(() => {
            if (toastElement) {
                toastElement.remove();
            }
        }, 5000);
    }
</script>
{% endblock %}