{% extends "base.html" %}

{% block title %}Inventar - Hotel Management System{% endblock %}

{% block content %}
<!-- Flatpickr CSS und JS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/flatpickr/dist/flatpickr.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/flatpickr/dist/themes/dark.css">
<script src="https://cdn.jsdelivr.net/npm/flatpickr"></script>
<script src="https://cdn.jsdelivr.net/npm/flatpickr/dist/l10n/de.js"></script>

<div class="container-fluid mt-4">
    <h1 class="mb-4">Inventarverwaltung</h1>
    
    <div class="row mb-4">
        <!-- Wareneingang Form -->
        <div class="col-md-4">
            <div class="card h-100">
                <div class="card-header bg-primary text-white">
                    <h5 class="mb-0">Wareneingang</h5>
                </div>
                <div class="card-body">
                    <form action="{{ url_for('inventory.wareneingang') }}" method="POST">
                        <div class="mb-3">
                            <label for="warengruppe_eingang" class="form-label">Warengruppe:</label>
                            <select name="warengruppe" id="warengruppe_eingang" class="form-select" required onchange="filterArticlesByType(this.value, 'artikel_eingang')">
                                <option value="">Bitte wählen...</option>
                                {% for typ in artikeltypen %}
                                <option value="{{ typ }}">{{ typ }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="artikel_eingang" class="form-label">Artikel:</label>
                            <select name="ARTIKELNAME" id="artikel_eingang" class="form-select" required>
                                <option value="">Bitte erst Warengruppe wählen...</option>
                                {% for artikel in articles %}
                                <option value="{{ artikel.name }}" data-type="{{ artikel.type }}" style="display: none;">{{ artikel.name }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="menge" class="form-label">Menge:</label>
                            <input type="number" step="0.01" name="menge" id="menge" class="form-control" required>
                        </div>
                        <div class="mb-3">
                            <label for="lagerort" class="form-label">Lagerort:</label>
                            <select name="lagerort" id="lagerort" class="form-select" required>
                                {% for ort in lagerorte %}
                                <option value="{{ ort }}">{{ ort }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="einlagerungsdatum" class="form-label">Einlagerungsdatum:</label>
                            <input type="date" name="einlagerungsdatum" id="einlagerungsdatum" class="form-control" required>
                        </div>
                        <div class="mb-3">
                            <label for="mhd" class="form-label">MHD (optional):</label>
                            <input type="date" name="mhd" id="mhd" class="form-control">
                        </div>
                        <button type="submit" class="btn btn-primary">Einlagern</button>
                    </form>
                </div>
            </div>
        </div>

        <!-- Lagerändern Form -->
        <div class="col-md-4">
            <div class="card h-100">
                <div class="card-header bg-warning text-dark">
                    <h5 class="mb-0">Lagerändern</h5>
                </div>
                <div class="card-body">
                    <form action="{{ url_for('inventory.change_storage') }}" method="POST">
                        <div class="mb-3">
                            <label for="artikel_typ" class="form-label">Warengruppe:</label>
                            <select name="artikel_typ" id="artikel_typ" class="form-select" required onchange="filterArticlesByType(this.value, 'artikel_lager')">
                                <option value="">Bitte wählen...</option>
                                {% for typ in artikeltypen %}
                                <option value="{{ typ }}">{{ typ }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="artikel_lager" class="form-label">Artikel:</label>
                            <select name="ARTIKELNAME" id="artikel_lager" class="form-select" required disabled>
                                <option value="">Bitte erst Warengruppe wählen...</option>
                                {% for artikel in articles %}
                                <option value="{{ artikel.name }}" data-type="{{ artikel.type }}" style="display: none;">
                                    {{ artikel.name }} ({{ artikel.amount }} verfügbar, {{ artikel.location }})
                                </option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="neuer_lagerort" class="form-label">Neuer Lagerort:</label>
                            <select name="neuer_lagerort" id="neuer_lagerort" class="form-select" required>
                                {% for ort in lagerorte %}
                                <option value="{{ ort }}">{{ ort }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="menge" class="form-label">Änderung der Menge:</label>
                            <input type="number" step="0.01" name="menge" id="menge" class="form-control" required>
                        </div>
                        <button type="submit" class="btn btn-warning">Ändern</button>
                    </form>
                </div>
            </div>
        </div>

        <!-- Warenausgang Form -->
        <div class="col-md-4">
            <div class="card h-100">
                <div class="card-header bg-danger text-white">
                    <h5 class="mb-0">Warenausgang</h5>
                </div>
                <div class="card-body">
                    <form action="{{ url_for('inventory.warenausgang') }}" method="POST">
                        <div class="mb-3">
                            <label for="artikel_typ_ausgang" class="form-label">Warengruppe:</label>
                            <select name="artikel_typ" id="artikel_typ_ausgang" class="form-select" required onchange="filterArticlesByType(this.value, 'artikel_ausgang')">
                                <option value="">Bitte wählen...</option>
                                {% for typ in artikeltypen %}
                                <option value="{{ typ }}">{{ typ }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="artikel_ausgang" class="form-label">Artikel:</label>
                            <select name="ARTIKELNAME" id="artikel_ausgang" class="form-select" required disabled>
                                <option value="">Bitte erst Warengruppe wählen...</option>
                                {% for artikel in articles %}
                                <option value="{{ artikel.name }}" data-type="{{ artikel.type }}" style="display: none;">
                                    {{ artikel.name }} ({{ artikel.amount }} verfügbar, {{ artikel.location }})
                                </option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="mb-3">
                            <label for="verbrauch" class="form-label">Verbrauch:</label>
                            <input type="number" step="1.0" name="verbrauch" id="verbrauch" class="form-control" required>
                        </div>
                        <div class="mb-3">
                            <label for="bruch" class="form-label">Bruch:</label>
                            <input type="number" step="1.0" name="bruch" id="bruch" class="form-control" required>
                        </div>
                        <button type="submit" class="btn btn-danger">Ausbuchen</button>
                    </form>
                </div>
            </div>
        </div>
    </div>

    <!-- Bestandsliste -->
    <div class="card mb-4">
        <div class="card-header bg-secondary text-white d-flex justify-content-between align-items-center">
            <h5 class="mb-0">Aktueller Bestand</h5>
            <div>
                <a href="{{ url_for('inventory.export_articles_csv') }}" class="btn btn-sm btn-light me-2">
                    <i class="fas fa-file-csv"></i> CSV Export
                </a>
                <a href="{{ url_for('inventory.export_articles_xlsx') }}" class="btn btn-sm btn-light">
                    <i class="fas fa-file-excel"></i> Excel Export
                </a>
            </div>
        </div>
        <div class="card-body">
            <form method="GET" action="{{ url_for('inventory.filter_articles') }}" class="mb-3">
                <div class="input-group">
                    <input type="text" name="query" class="form-control" placeholder="Artikelname oder Typ suchen">
                    <button type="submit" class="btn btn-outline-secondary">
                        <i class="fas fa-search"></i> Filtern/Zurücksetzen
                    </button>
                </div>
            </form>
            <div class="table-responsive">
                <table class="table table-striped table-hover">
                    <thead class="table-light">
                        <tr>
                            <th>Artikel</th>
                            <th>Menge</th>
                            <th>Lagerort</th>
                            <th>Typ</th>
                            <th>Eingelagert am</th>
                            <th>MHD</th>
                        </tr>
                    </thead>
                    <tbody>
                        {% for article in articles %}
                        <tr>
                            <td>{{ article.name }}</td>
                            <td>{{ article.amount }}</td>
                            <td>{{ article.location }}</td>
                            <td>{{ article.type }}</td>
                            <td>{{ article.storage_date.strftime('%d.%m.%Y') }}</td>
                            <td>{{ article.expiry_date.strftime('%d.%m.%Y') if article.expiry_date else '-' }}</td>
                        </tr>
                        {% endfor %}
                    </tbody>
                </table>
            </div>
        </div>
    </div>

    <!-- Verbrauchshistorie -->
    <div class="card mb-4">
        <div class="card-header bg-info text-white d-flex justify-content-between align-items-center">
            <h5 class="mb-0">Verbrauchshistorie</h5>
            <div>
                <a href="{{ url_for('inventory.export_usages_csv') }}" class="btn btn-sm btn-light me-2">
                    <i class="fas fa-file-csv"></i> CSV Export
                </a>
                <a href="{{ url_for('inventory.export_usages_xlsx') }}" class="btn btn-sm btn-light">
                    <i class="fas fa-file-excel"></i> Excel Export
                </a>
            </div>
        </div>
        <div class="card-body">
            <form method="GET" action="{{ url_for('inventory.filter_usages') }}" class="mb-3">
                <div class="input-group">
                    <input type="text" name="query" class="form-control" placeholder="Artikelname oder Datum suchen">
                    <button type="submit" class="btn btn-outline-secondary">
                        <i class="fas fa-search"></i> Filtern/Zurücksetzen
                    </button>
                </div>
            </form>
            <div class="table-responsive">
                <table class="table table-striped table-hover">
                    <thead class="table-light">
                        <tr>
                            <th>Datum</th>
                            <th>Artikel</th>
                            <th>Verbrauch</th>
                            <th>Bruch</th>
                        </tr>
                    </thead>
                    <tbody>
                        {% for usage in usages %}
                        <tr>
                            <td>{{ usage.date.strftime('%d.%m.%Y') }}</td>
                            <td>{{ usage.article_name }}</td>
                            <td>{{ usage.consumption }}</td>
                            <td>{{ usage.breakage }}</td>
                        </tr>
                        {% endfor %}
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
    document.addEventListener('DOMContentLoaded', function() {
        // Flatpickr für Datumswähler initialisieren
        flatpickr(".datepicker", {
            locale: "de",
            dateFormat: "Y-m-d",
            altInput: true,
            altFormat: "d.m.Y",
            // Sicherstellen, dass das Datum im Format Y-m-d an das Backend gesendet wird
            formatDate: (date) => {
                return date.toISOString().split('T')[0];
            }
        });
        
        // Aktuelles Datum als Standardwert für Einlagerungsdatum setzen
        document.getElementById('einlagerungsdatum').value = new Date().toISOString().split('T')[0];
        
        // Artikel-Dropdown für Lagerändern und Warenausgang aktivieren, wenn eine Warengruppe ausgewählt wurde
        document.getElementById('artikel_typ').addEventListener('change', function() {
            document.getElementById('artikel_lager').disabled = this.value === '';
        });
        
        document.getElementById('artikel_typ_ausgang').addEventListener('change', function() {
            document.getElementById('artikel_ausgang').disabled = this.value === '';
        });
    });
    
    // Funktion zum Filtern der Artikel nach Typ
    function filterArticlesByType(type, selectId) {
        const select = document.getElementById(selectId);
        const options = select.querySelectorAll('option');
        
        // Alle Optionen ausblenden
        options.forEach(option => {
            if (option.value === '') {
                option.style.display = '';
            } else {
                option.style.display = 'none';
            }
        });
        
        // Nur Optionen mit dem ausgewählten Typ anzeigen
        if (type) {
            options.forEach(option => {
                if (option.getAttribute('data-type') === type) {
                    option.style.display = '';
                }
            });
        }
        
        // Erste Option auswählen
        select.selectedIndex = 0;
        
        // Select-Element aktivieren, wenn ein Typ ausgewählt wurde
        select.disabled = type === '';
    }
</script>
{% endblock %}