{% extends 'base.html' %}
{% load static %}

{% block title %}Ländereien - Stiftungsverwaltung{% endblock %}

{% block content %}

    <!-- Header -->
    <div class="row mb-4">
        <div class="col-md-6">
            <h1 class="h3">
                <i class="fas fa-map text-success me-2"></i>
                Ländereien verwalten
            </h1>
        </div>
        <div class="col-md-6 text-end">
            <a href="{% url 'stiftung:land_create' %}" class="btn btn-success">
                <i class="fas fa-plus me-2"></i>Neue Länderei
            </a>
        </div>
    </div>

    <!-- Search and Filters -->
    <div class="card shadow mb-4">
        <div class="card-header py-3">
            <h6 class="m-0 font-weight-bold text-primary">
                <i class="fas fa-search me-2"></i>Suche & Filter
            </h6>
        </div>
        <div class="card-body">
            <form method="get" class="row g-3">
                <div class="col-md-4">
                    <label for="search" class="form-label">Suche</label>
                    <input type="text" class="form-control" id="search" name="search" 
                           value="{{ search_query }}" placeholder="Lfd. Nr., Gemeinde, Gemarkung...">
                </div>
                <div class="col-md-3">
                    <label for="gemeinde" class="form-label">Gemeinde</label>
                    <select class="form-control" id="gemeinde" name="gemeinde">
                        <option value="">Alle Gemeinden</option>
                        {% for gemeinde in gemeinden %}
                        <option value="{{ gemeinde }}" {% if gemeinde == gemeinde_filter %}selected{% endif %}>
                            {{ gemeinde }}
                        </option>
                        {% endfor %}
                    </select>
                </div>
                <div class="col-md-3">
                    <label for="aktiv" class="form-label">Status</label>
                    <select class="form-control" id="aktiv" name="aktiv">
                        <option value="">Alle</option>
                        <option value="true" {% if aktiv_filter == 'true' %}selected{% endif %}>Aktiv</option>
                        <option value="false" {% if aktiv_filter == 'false' %}selected{% endif %}>Inaktiv</option>
                    </select>
                </div>
                <div class="col-md-2">
                    <label class="form-label">&nbsp;</label>
                    <div>
                        <button type="submit" class="btn btn-primary">
                            <i class="fas fa-search me-2"></i>Suchen
                        </button>
                    </div>
                </div>
            </form>
        </div>
    </div>

    <!-- Charts Row -->
    <div class="row mb-4">
        <!-- Usage Chart -->
        <div class="col-lg-4 mb-3">
            <div class="card shadow">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">
                        <i class="fas fa-percentage me-2"></i>Flächennutzung
                    </h6>
                </div>
                <div class="card-body">
                    <div class="row text-center mb-3">
                        <div class="col-4">
                            <div class="h6 mb-0 text-success">{{ stats.pct_wald|default:0 }}%</div>
                            <div class="small text-muted">Wald</div>
                        </div>
                        <div class="col-4">
                            <div class="h6 mb-0 text-info">{{ stats.pct_acker|default:0 }}%</div>
                            <div class="small text-muted">Acker</div>
                        </div>
                        <div class="col-4">
                            <div class="h6 mb-0 text-warning">{{ stats.pct_gruenland|default:0 }}%</div>
                            <div class="small text-muted">Grünland</div>
                        </div>
                    </div>
                    <div style="min-height: 200px;">
                        <canvas id="usageChart"></canvas>
                    </div>
                </div>
            </div>
        </div>
        
        <!-- Sizes Chart -->
        <div class="col-lg-4 mb-3">
            <div class="card shadow">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">
                        <i class="fas fa-chart-bar me-2"></i>Größen (Top 30)
                    </h6>
                </div>
                <div class="card-body">
                    <div class="text-center mb-3">
                        <div class="h6 mb-0">{{ stats.total_plots }}</div>
                        <div class="small text-muted">Grundstücke gesamt</div>
                    </div>
                    <div style="min-height: 200px;">
                        <canvas id="sizesChart"></canvas>
                    </div>
                </div>
            </div>
        </div>
        
        <!-- Verpachtung Chart -->
        <div class="col-lg-4 mb-3">
            <div class="card shadow">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">
                        <i class="fas fa-handshake me-2"></i>Verpachtungsstatus
                    </h6>
                </div>
                <div class="card-body">
                    <div class="row text-center mb-3">
                        <div class="col-6">
                            <div class="h6 mb-0 text-success">{{ stats.pct_verpachtet|default:0 }}%</div>
                            <div class="small text-muted">Verpachtet</div>
                        </div>
                        <div class="col-6">
                            <div class="h6 mb-0 text-secondary">{{ stats.pct_unveerpachtet|default:0 }}%</div>
                            <div class="small text-muted">Verfügbar</div>
                        </div>
                    </div>
                    <div style="min-height: 200px;">
                        <canvas id="verpachtungChart"></canvas>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Results -->
    <div class="card shadow">
        <div class="card-header py-3 d-flex justify-content-between align-items-center">
            <h6 class="m-0 font-weight-bold text-primary">
                <i class="fas fa-list me-2"></i>Ergebnisse
                {% if page_obj %}
                <span class="badge bg-secondary ms-2">{{ page_obj.paginator.count }} Ländereien</span>
                {% endif %}
            </h6>
            <div>
                <a href="{% url 'stiftung:home' %}" class="btn btn-outline-secondary btn-sm">
                    <i class="fas fa-arrow-left me-2"></i>Zurück zur Startseite
                </a>
            </div>
        </div>
        <div class="card-body">
            {% if page_obj %}
                <div class="table-responsive">
                    <table class="table table-hover">
                        <thead class="table-light">
                            <tr>
                                <th class="text-nowrap">
                                    <a class="text-decoration-none" href="?sort=lfd_nr&dir={% if sort == 'lfd_nr' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Lfd. Nr.</a>
                                </th>
                                <th class="text-nowrap">
                                    <a class="text-decoration-none" href="?sort=gemeinde&dir={% if sort == 'gemeinde' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Gemeinde</a>
                                </th>
                                <th class="text-nowrap">
                                    <a class="text-decoration-none" href="?sort=gemarkung&dir={% if sort == 'gemarkung' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Gemarkung</a>
                                </th>
                                <th class="text-nowrap">
                                    <a class="text-decoration-none" href="?sort=flur&dir={% if sort == 'flur' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Flur</a>/<a class="text-decoration-none" href="?sort=flurstueck&dir={% if sort == 'flurstueck' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Flurstück</a>
                                </th>
                                <th class="text-nowrap">
                                    <a class="text-decoration-none" href="?sort=groesse&dir={% if sort == 'groesse' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Größe</a>
                                </th>
                                <th class="text-nowrap">
                                    <a class="text-decoration-none" href="?sort=verp&dir={% if sort == 'verp' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Verpachtet</a>
                                </th>
                                <th class="text-nowrap">
                                    <a class="text-decoration-none" href="?sort=grad&dir={% if sort == 'grad' and dir != 'desc' %}desc{% else %}asc{% endif %}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}">Verpachtungsgrad</a>
                                </th>
                                <th>Status</th>
                                <th>Aktionen</th>
                            </tr>
                        </thead>
                        <tbody>
                            {% for land in page_obj %}
                            <tr>
                                <td>
                                    <strong>{{ land.lfd_nr }}</strong>
                                    {% if land.ew_nummer %}
                                    <br><small class="text-muted">{{ land.ew_nummer }}</small>
                                    {% endif %}
                                </td>
                                <td>
                                    <strong>{{ land.gemeinde }}</strong>
                                    <br><small class="text-muted">{{ land.amtsgericht }}</small>
                                </td>
                                <td>{{ land.gemarkung }}</td>
                                <td>
                                    Flur {{ land.flur }}<br>
                                    Flurstück {{ land.flurstueck }}
                                </td>
                                <td>
                                    <strong>{{ land.groesse_qm|floatformat:0 }} qm</strong>
                                    <small class="text-muted">({{ land.groesse_hektar|floatformat:2 }} ha)</small>
                                    <br>
                                    <small class="text-muted">
                                        {% if land.gruenland_qm > 0 %}G: {{ land.gruenland_qm|floatformat:0 }}{% endif %}
                                        {% if land.acker_qm > 0 %} A: {{ land.acker_qm|floatformat:0 }}{% endif %}
                                        {% if land.wald_qm > 0 %} W: {{ land.wald_qm|floatformat:0 }}{% endif %}
                                        {% if land.sonstiges_qm > 0 %} S: {{ land.sonstiges_qm|floatformat:0 }}{% endif %}
                                    </small>
                                </td>
                                <td>
                                    {{ land.get_verpachtete_flaeche_aktuell|floatformat:0 }} qm
                                    {% if land.flaeche_alte_liste %}
                                    <br><small class="text-muted">Alt: {{ land.flaeche_alte_liste|floatformat:0 }} qm</small>
                                    {% endif %}
                                </td>
                                <td>
                                    {% with verpachtungsgrad=land.get_verpachtungsgrad %}
                                    {% if verpachtungsgrad > 90 %}
                                        <span class="badge bg-success">{{ verpachtungsgrad|floatformat:1 }}%</span>
                                    {% elif verpachtungsgrad > 70 %}
                                        <span class="badge bg-warning">{{ verpachtungsgrad|floatformat:1 }}%</span>
                                    {% else %}
                                        <span class="badge bg-danger">{{ verpachtungsgrad|floatformat:1 }}%</span>
                                    {% endif %}
                                    {% endwith %}
                                </td>
                                <td>
                                    {% if land.aktiv %}
                                        <span class="badge bg-success">Aktiv</span>
                                    {% else %}
                                        <span class="badge bg-secondary">Inaktiv</span>
                                    {% endif %}
                                </td>
                                <td>
                                    <div class="btn-group" role="group">
                                        <a href="{% url 'stiftung:land_detail' land.pk %}"
                                           class="btn btn-sm btn-outline-primary" title="Anzeigen">
                                            <i class="fas fa-eye"></i>
                                        </a>
                                        {% if land.alkis_kennzeichen %}
                                        <a href="https://ogc-api.nrw.de/lika/v1/collections/flurstueck/Items/{{ land.alkis_kennzeichen|urlencode }}"
                                           class="btn btn-sm btn-outline-success" title="Kataster" target="_blank" rel="noopener">
                                            <i class="fas fa-map-marked-alt"></i>
                                        </a>
                                        {% else %}
                                        <a href="https://www.tim-online.nrw.de/tim-online2/?WFS_gemarkung={{ land.gemarkung|urlencode }}&WFS_flur={{ land.flur|urlencode }}&WFS_flurstueck={{ land.flurstueck|urlencode }}"
                                           class="btn btn-sm btn-outline-success" title="TIM-Online NRW" target="_blank" rel="noopener">
                                            <i class="fas fa-map-marked-alt"></i>
                                        </a>
                                        {% endif %}
                                        <a href="{% url 'stiftung:land_update' land.pk %}"
                                           class="btn btn-sm btn-outline-warning" title="Bearbeiten">
                                            <i class="fas fa-edit"></i>
                                        </a>
                                        <a href="{% url 'stiftung:land_delete' land.pk %}"
                                           class="btn btn-sm btn-outline-danger" title="Löschen">
                                            <i class="fas fa-trash"></i>
                                        </a>
                                    </div>
                                </td>
                            </tr>
                            {% endfor %}
                        </tbody>
                    </table>
                </div>

                <!-- Pagination -->
                {% if page_obj.has_other_pages %}
                <nav aria-label="Ländereien Navigation">
                    <ul class="pagination justify-content-center">
                        {% if page_obj.has_previous %}
                            <li class="page-item">
                                <a class="page-link" href="?page=1{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}{% if sort %}&sort={{ sort }}&dir={{ dir }}{% endif %}">
                                    <i class="fas fa-angle-double-left"></i>
                                </a>
                            </li>
                            <li class="page-item">
                                <a class="page-link" href="?page={{ page_obj.previous_page_number }}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}{% if sort %}&sort={{ sort }}&dir={{ dir }}{% endif %}">
                                    <i class="fas fa-angle-left"></i>
                                </a>
                            </li>
                        {% endif %}

                        {% for num in page_obj.paginator.page_range %}
                            {% if page_obj.number == num %}
                                <li class="page-item active">
                                    <span class="page-link">{{ num }}</span>
                                </li>
                            {% elif num > page_obj.number|add:'-3' and num < page_obj.number|add:'3' %}
                                <li class="page-item">
                                    <a class="page-link" href="?page={{ num }}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}{% if sort %}&sort={{ sort }}&dir={{ dir }}{% endif %}">
                                        {{ num }}
                                    </a>
                                </li>
                            {% endif %}
                        {% endfor %}

                        {% if page_obj.has_next %}
                            <li class="page-item">
                                <a class="page-link" href="?page={{ page_obj.next_page_number }}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}{% if sort %}&sort={{ sort }}&dir={{ dir }}{% endif %}">
                                    <i class="fas fa-angle-right"></i>
                                </a>
                            </li>
                            <li class="page-item">
                                <a class="page-link" href="?page={{ page_obj.paginator.num_pages }}{% if search_query %}&search={{ search_query }}{% endif %}{% if gemeinde_filter %}&gemeinde={{ gemeinde_filter }}{% endif %}{% if aktiv_filter %}&aktiv={{ aktiv_filter }}{% endif %}{% if sort %}&sort={{ sort }}&dir={{ dir }}{% endif %}">
                                    <i class="fas fa-angle-double-right"></i>
                                </a>
                            </li>
                        {% endif %}
                    </ul>
                </nav>
                {% endif %}

            {% else %}
                <div class="text-center py-5">
                    <i class="fas fa-map fa-3x text-muted mb-3"></i>
                    <h5 class="text-muted">Keine Ländereien gefunden</h5>
                    <p class="text-muted">
                        {% if search_query or gemeinde_filter or aktiv_filter %}
                            Versuchen Sie andere Suchkriterien oder 
                            <a href="{% url 'stiftung:land_list' %}">alle Ländereien anzeigen</a>.
                        {% else %}
                            Erstellen Sie Ihre erste Länderei mit dem Button oben.
                        {% endif %}
                    </p>
                </div>
            {% endif %}
        </div>
    </div>

{% endblock %}

{% block javascript %}
<script>
    // Auto-submit form when filters change
    document.getElementById('gemeinde').addEventListener('change', function() {
        this.form.submit();
    });
    
    document.getElementById('aktiv').addEventListener('change', function() {
        this.form.submit();
    });
</script>
<!-- Chart.js -->
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1/dist/chart.umd.min.js"></script>
<script>
    document.addEventListener('DOMContentLoaded', function() {
        try {
            console.log('Initializing charts...');
            
            // Doughnut chart for usage
            const uctx = document.getElementById('usageChart');
            if (uctx) {
                console.log('Found usageChart canvas');
                
                // Simple data without filtering first to test
                const waldVal = parseFloat('{{ stats.sum_wald_qm|default:0|floatformat:2 }}') || 0;
                const ackerVal = parseFloat('{{ stats.sum_acker_qm|default:0|floatformat:2 }}') || 0;
                const gruenlandVal = parseFloat('{{ stats.sum_gruenland_qm|default:0|floatformat:2 }}') || 0;
                const sonstigesVal = parseFloat('{{ stats.sum_sonstiges_qm|default:0|floatformat:2 }}') || 0;
                
                console.log('Chart data:', {wald: waldVal, acker: ackerVal, gruenland: gruenlandVal, sonstiges: sonstigesVal});
                
                // Only include categories with data > 0
                const chartData = [];
                const chartLabels = [];
                const chartColors = [];
                const chartBorders = [];
                
                if (waldVal > 0) {
                    chartData.push(waldVal);
                    chartLabels.push('Wald');
                    chartColors.push('rgba(0, 66, 37, 0.8)');
                    chartBorders.push('#004225');
                }
                if (ackerVal > 0) {
                    chartData.push(ackerVal);
                    chartLabels.push('Acker');
                    chartColors.push('rgba(0, 104, 55, 0.8)');
                    chartBorders.push('#006837');
                }
                if (gruenlandVal > 0) {
                    chartData.push(gruenlandVal);
                    chartLabels.push('Grünland');
                    chartColors.push('rgba(253, 126, 20, 0.8)');
                    chartBorders.push('#fd7e14');
                }
                if (sonstigesVal > 0) {
                    chartData.push(sonstigesVal);
                    chartLabels.push('Sonstiges');
                    chartColors.push('rgba(108, 117, 125, 0.8)');
                    chartBorders.push('#6c757d');
                }
                
                if (chartData.length > 0) {
                    new Chart(uctx, {
                        type: 'doughnut',
                        data: {
                            labels: chartLabels,
                            datasets: [{
                                data: chartData,
                                backgroundColor: chartColors,
                                borderColor: chartBorders,
                                borderWidth: 2
                            }]
                        },
                        options: {
                            responsive: true,
                            maintainAspectRatio: false,
                            plugins: {
                                legend: { 
                                    display: true,
                                    position: 'bottom',
                                    labels: { padding: 10, fontSize: 12 }
                                },
                                tooltip: { 
                                    callbacks: { 
                                        label: function(context) {
                                            return context.label + ': ' + context.raw.toLocaleString() + ' qm';
                                        }
                                    }
                                }
                            }
                        }
                    });
                    console.log('Usage chart created successfully');
                } else {
                    console.log('No data for usage chart');
                }
            } else {
                console.log('usageChart canvas not found');
            }

            // Bar chart for sizes
            const ctx = document.getElementById('sizesChart');
            if (ctx) {
                console.log('Found sizesChart canvas');
                const labels = JSON.parse('{{ size_chart_labels_json|escapejs }}');
                const dataVals = JSON.parse('{{ size_chart_values_json|escapejs }}');
                console.log('Bar chart data:', {labels: labels.length, values: dataVals.length});
                
                new Chart(ctx, {
                    type: 'bar',
                    data: {
                        labels: labels,
                        datasets: [{
                            label: 'Größe (qm)',
                            data: dataVals,
                            backgroundColor: 'rgba(0, 104, 55, 0.6)',
                            borderColor: '#006837',
                            borderWidth: 2
                        }]
                    },
                    options: {
                        responsive: true,
                        maintainAspectRatio: false,
                        scales: {
                            x: { ticks: { autoSkip: true, maxTicksLimit: 8 } },
                            y: { beginAtZero: true }
                        },
                        plugins: {
                            legend: { display: false },
                            tooltip: { callbacks: { label: function(ctx) { return ctx.parsed.y.toLocaleString() + ' qm'; } } }
                        }
                    }
                });
                console.log('Bar chart created successfully');
            } else {
                console.log('sizesChart canvas not found');
            }

            // Doughnut chart for verpachtung
            const vctx = document.getElementById('verpachtungChart');
            if (vctx) {
                console.log('Found verpachtungChart canvas');
                
                const verpachtet = {{ stats.verpachtete_plots|default:0 }};
                const verfuegbar = {{ stats.unveerpachtete_plots|default:0 }};
                
                console.log('Verpachtung data:', {verpachtet: verpachtet, verfuegbar: verfuegbar});
                
                if (verpachtet > 0 || verfuegbar > 0) {
                    const verpachtungData = [];
                    const verpachtungLabels = [];
                    const verpachtungColors = [];
                    
                    if (verpachtet > 0) {
                        verpachtungData.push(verpachtet);
                        verpachtungLabels.push('Verpachtet');
                        verpachtungColors.push('rgba(40, 167, 69, 0.8)');
                    }
                    if (verfuegbar > 0) {
                        verpachtungData.push(verfuegbar);
                        verpachtungLabels.push('Verfügbar');
                        verpachtungColors.push('rgba(108, 117, 125, 0.8)');
                    }
                    
                    new Chart(vctx, {
                        type: 'doughnut',
                        data: {
                            labels: verpachtungLabels,
                            datasets: [{
                                data: verpachtungData,
                                backgroundColor: verpachtungColors,
                                borderWidth: 2,
                                borderColor: '#fff'
                            }]
                        },
                        options: {
                            responsive: true,
                            maintainAspectRatio: false,
                            plugins: {
                                legend: { 
                                    display: true,
                                    position: 'bottom',
                                    labels: { padding: 10, fontSize: 12 }
                                },
                                tooltip: { 
                                    callbacks: { 
                                        label: function(ctx) { 
                                            const percentage = ((ctx.parsed / (verpachtet + verfuegbar)) * 100).toFixed(1);
                                            return ctx.label + ': ' + ctx.parsed + ' (' + percentage + '%)'; 
                                        } 
                                    } 
                                }
                            }
                        }
                    });
                    console.log('Verpachtung chart created successfully');
                } else {
                    console.log('No data for verpachtung chart');
                }
            } else {
                console.log('verpachtungChart canvas not found');
            }
        } catch (e) { 
            console.error('Chart initialization error:', e);
        }
    });
</script>
{% endblock %}