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

{% block title %}Warehouse Inventory - Ghana Wholesale{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <h2><i class="fas fa-warehouse"></i> Warehouse Inventory</h2>
    <div>
        <a href="{% url 'product_create' %}" class="btn btn-success">
            <i class="fas fa-plus-circle"></i> Add Product
        </a>
        <a href="{% url 'barcode_scan' %}" class="btn btn-primary">
            <i class="fas fa-barcode"></i> Scan Barcode
        </a>
        <a href="{% url 'export_products_csv' %}" class="btn btn-outline-secondary">
            <i class="fas fa-download"></i> Export CSV
        </a>
    </div>
</div>

<!-- Summary Cards -->
<div class="row mb-4">
    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card stat-card border-start border-success border-4">
            <div class="card-body">
                <div class="d-flex justify-content-between align-items-center">
                    <div>
                        <h6 class="text-muted mb-2">Total Products</h6>
                        <h3 class="mb-0">{{ total_items }}</h3>
                    </div>
                    <div class="avatar bg-success bg-opacity-10 p-3">
                        <i class="fas fa-boxes fs-3 text-success"></i>
                    </div>
                </div>
                <small class="text-muted">Different items in warehouse</small>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card stat-card border-start border-primary border-4">
            <div class="card-body">
                <div class="d-flex justify-content-between align-items-center">
                    <div>
                        <h6 class="text-muted mb-2">Total Units</h6>
                        <h3 class="mb-0">{{ total_quantity }}</h3>
                    </div>
                    <div class="avatar bg-primary bg-opacity-10 p-3">
                        <i class="fas fa-layer-group fs-3 text-primary"></i>
                    </div>
                </div>
                <small class="text-muted">Total quantity in stock</small>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card stat-card border-start border-warning border-4">
            <div class="card-body">
                <div class="d-flex justify-content-between align-items-center">
                    <div>
                        <h6 class="text-muted mb-2">Low Stock Items</h6>
                        <h3 class="mb-0">{{ low_stock_items|default:0 }}</h3>
                    </div>
                    <div class="avatar bg-warning bg-opacity-10 p-3">
                        <i class="fas fa-exclamation-triangle fs-3 text-warning"></i>
                    </div>
                </div>
                <small class="text-muted">Need reordering</small>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card stat-card border-start border-info border-4">
            <div class="card-body">
                <div class="d-flex justify-content-between align-items-center">
                    <div>
                        <h6 class="text-muted mb-2">Total Value</h6>
                        <h3 class="mb-0">GH₵{{ total_value|floatformat:2 }}</h3>
                    </div>
                    <div class="avatar bg-info bg-opacity-10 p-3">
                        <i class="fas fa-money-bill-wave fs-3 text-info"></i>
                    </div>
                </div>
                <small class="text-muted">Warehouse stock value</small>
            </div>
        </div>
    </div>
</div>

<!-- Search and Filters -->
<div class="card mb-4">
    <div class="card-body">
        <form method="get" class="row g-3">
            <div class="col-md-4">
                <div class="input-group">
                    <input type="text" name="q" class="form-control" placeholder="Search products..." value="{{ search_query }}">
                    <button type="submit" class="btn btn-primary">
                        <i class="fas fa-search"></i>
                    </button>
                </div>
            </div>
            <div class="col-md-3">
                <select name="category" class="form-select" onchange="this.form.submit()">
                    <option value="">All Categories</option>
                    {% for category in categories %}
                    <option value="{{ category.id }}" {% if category.id|stringformat:"s" == selected_category %}selected{% endif %}>
                        {{ category.name }}
                    </option>
                    {% endfor %}
                </select>
            </div>
            <div class="col-md-2">
                <div class="form-check form-switch">
                    <input class="form-check-input" type="checkbox" name="low_stock" id="lowStock" 
                           {% if low_stock_filter %}checked{% endif %} onchange="this.form.submit()">
                    <label class="form-check-label" for="lowStock">Low Stock</label>
                </div>
            </div>
            <div class="col-md-2">
                <div class="form-check form-switch">
                    <input class="form-check-input" type="checkbox" name="out_of_stock" id="outOfStock" 
                           {% if out_of_stock_filter %}checked{% endif %} onchange="this.form.submit()">
                    <label class="form-check-label" for="outOfStock">Out of Stock</label>
                </div>
            </div>
            <div class="col-md-1">
                <a href="{% url 'warehouse_inventory' %}" class="btn btn-outline-secondary w-100">
                    <i class="fas fa-times"></i>
                </a>
            </div>
        </form>
    </div>
</div>

<!-- Inventory Table -->
<div class="card">
    <div class="card-body">
        <div class="table-responsive">
            <table class="table table-hover">
                <thead>
                    <tr>
                        <th>SKU/Barcode</th>
                        <th>Product</th>
                        <th>Category</th>
                        <th>Unit</th>
                        <th class="text-end">Cost</th>
                        <th class="text-end">Price</th>
                        <th class="text-end">Quantity</th>
                        <th class="text-end">Available</th>
                        <th class="text-end">Value</th>
                        <th>Status</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    {% for item in inventory %}
                    <tr class="{% if item.available == 0 %}table-danger{% elif item.is_low_stock %}table-warning{% endif %}">
                        <td>
                            <div><strong>{{ item.product.sku }}</strong></div>
                            {% if item.product.barcode %}
                            <small class="text-muted">{{ item.product.barcode }}</small>
                            {% endif %}
                        </td>
                        <td>
                            <div class="d-flex align-items-center">
                                <div class="bg-light rounded me-2 d-flex align-items-center justify-content-center" 
                                     style="width: 40px; height: 40px;">
                                    <i class="fas fa-box text-muted"></i>
                                </div>
                                <div>
                                    <strong>{{ item.product.name }}</strong>
                                    {% if item.product.description %}
                                    <br><small class="text-muted">{{ item.product.description|truncatechars:30 }}</small>
                                    {% endif %}
                                </div>
                            </div>
                        </td>
                        <td>{{ item.product.category.name|default:"-" }}</td>
                        <td>{{ item.product.get_unit_display }}</td>
                        <td class="text-end text-danger">GH₵{{ item.product.cost_price|floatformat:2 }}</td>
                        <td class="text-end text-success">GH₵{{ item.product.selling_price|floatformat:2 }}</td>
                        <td class="text-end">{{ item.quantity }}</td>
                        <td class="text-end">
                            <span class="badge bg-{% if item.available == 0 %}danger{% elif item.is_low_stock %}warning{% else %}success{% endif %}">
                                {{ item.available }}
                            </span>
                        </td>
                        <td class="text-end fw-bold">GH₵{{ item.stock_value|floatformat:2 }}</td>
                        <td>
                            {% if item.available == 0 %}
                            <span class="badge bg-danger">Out of Stock</span>
                            {% elif item.is_low_stock %}
                            <span class="badge bg-warning">Low Stock</span>
                            {% else %}
                            <span class="badge bg-success">In Stock</span>
                            {% endif %}
                        </td>
                        <td>
                            <div class="btn-group btn-group-sm">
                                <a href="{% url 'product_detail' item.product.pk %}" class="btn btn-outline-primary" title="View">
                                    <i class="fas fa-eye"></i>
                                </a>
                                <a href="{% url 'fast_transfer' %}" class="btn btn-outline-success" title="Transfer">
                                    <i class="fas fa-truck"></i>
                                </a>
                            </div>
                        </td>
                    </tr>
                    {% empty %}
                    <tr>
                        <td colspan="11" class="text-center py-5">
                            <div class="mb-4">
                                <i class="fas fa-inbox text-muted" style="font-size: 3rem;"></i>
                            </div>
                            <h5>No products in warehouse</h5>
                            <p class="text-muted mb-4">
                                {% if search_query or selected_category or low_stock_filter or out_of_stock_filter %}
                                No products match your search criteria. Try adjusting your filters.
                                {% else %}
                                Add products to the warehouse to get started.
                                {% endif %}
                            </p>
                            <a href="{% url 'product_create' %}" class="btn btn-primary">
                                <i class="fas fa-plus-circle"></i> Add First Product
                            </a>
                        </td>
                    </tr>
                    {% endfor %}
                </tbody>
            </table>
        </div>
        
        {% if inventory %}
        <!-- Summary Footer -->
        <div class="row mt-4">
            <div class="col-md-4">
                <div class="alert alert-light">
                    <h6><i class="fas fa-info-circle"></i> Summary</h6>
                    <small class="mb-0">
                        Showing <strong>{{ inventory|length }}</strong> items<br>
                        Total Value: <strong>GH₵{{ total_value|floatformat:2 }}</strong><br>
                        Warehouse: <strong>{{ warehouse.name|default:"Main Warehouse" }}</strong>
                    </small>
                </div>
            </div>
            <div class="col-md-4">
                <div class="alert alert-light">
                    <h6><i class="fas fa-store"></i> Ghana Market</h6>
                    <small class="mb-0">
                        • Prices in Ghana Cedis (GH₵)<br>
                        • Stock managed in main warehouse<br>
                        • Transfers to shops as needed
                    </small>
                </div>
            </div>
            <div class="col-md-4">
                <div class="alert alert-light">
                    <h6><i class="fas fa-bolt"></i> Quick Actions</h6>
                    <div class="d-grid gap-2">
                        <a href="{% url 'barcode_scan' %}" class="btn btn-sm btn-outline-primary">
                            <i class="fas fa-barcode"></i> Scan Barcode
                        </a>
                        <a href="{% url 'fast_transfer' %}" class="btn btn-sm btn-outline-success">
                            <i class="fas fa-truck"></i> Quick Transfer
                        </a>
                    </div>
                </div>
            </div>
        </div>
        {% endif %}
    </div>
</div>
{% endblock %}