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

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

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <h2><i class="fas fa-tachometer-alt"></i> Inventory Dashboard</h2>
    <div>
        <a href="{% url 'product_create' %}" class="btn btn-primary">
            <i class="fas fa-plus-circle"></i> Add Product
        </a>
        <a href="{% url 'warehouse_inventory' %}" class="btn btn-info">
            <i class="fas fa-warehouse"></i> Warehouse
        </a>
        <a href="{% url 'transfer_list' %}" class="btn btn-success">
            <i class="fas fa-truck"></i> Transfers
        </a>
    </div>
</div>

<!-- Quick Stats -->
<div class="row mb-4">
    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-primary shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-primary text-uppercase mb-1">
                            Total Products
                        </div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ total_products }}</div>
                    </div>
                    <div class="col-auto">
                        <i class="fas fa-boxes fa-2x text-gray-300"></i>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-success shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-success text-uppercase mb-1">
                            Warehouse Items
                        </div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ total_warehouse_items }}</div>
                        <small class="text-muted">{{ total_warehouse_quantity }} units</small>
                    </div>
                    <div class="col-auto">
                        <i class="fas fa-warehouse fa-2x text-gray-300"></i>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-warning shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-warning text-uppercase mb-1">
                            Low Stock Items
                        </div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ low_stock_items }}</div>
                    </div>
                    <div class="col-auto">
                        <i class="fas fa-exclamation-triangle fa-2x text-gray-300"></i>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card border-left-info shadow h-100 py-2">
            <div class="card-body">
                <div class="row no-gutters align-items-center">
                    <div class="col mr-2">
                        <div class="text-xs font-weight-bold text-info text-uppercase mb-1">
                            Active Shops
                        </div>
                        <div class="h5 mb-0 font-weight-bold text-gray-800">{{ total_shops }}</div>
                    </div>
                    <div class="col-auto">
                        <i class="fas fa-store fa-2x text-gray-300"></i>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<div class="row">
    <!-- Warehouse Value -->
    <div class="col-lg-4 mb-4">
        <div class="card">
            <div class="card-header bg-primary text-white">
                <h6 class="mb-0"><i class="fas fa-money-bill-wave"></i> Warehouse Value</h6>
            </div>
            <div class="card-body text-center">
                <div class="display-4 text-success mb-2">GH₵ {{ total_warehouse_value|floatformat:2|intcomma }}</div>
                <p class="text-muted">Total inventory value</p>
                <div class="row">
                    <div class="col-6">
                        <div class="text-muted">Items</div>
                        <div class="h4">{{ total_warehouse_items }}</div>
                    </div>
                    <div class="col-6">
                        <div class="text-muted">Quantity</div>
                        <div class="h4">{{ total_warehouse_quantity }}</div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Low Stock Alerts -->
    <div class="col-lg-8 mb-4">
        <div class="card">
            <div class="card-header bg-warning text-dark">
                <div class="d-flex justify-content-between align-items-center">
                    <h6 class="mb-0"><i class="fas fa-exclamation-triangle"></i> Low Stock Alerts</h6>
                    <span class="badge bg-danger">{{ low_stock_alerts|length }}</span>
                </div>
            </div>
            <div class="card-body">
                {% if low_stock_alerts %}
                <div class="table-responsive">
                    <table class="table table-sm">
                        <thead>
                            <tr>
                                <th>Product</th>
                                <th>SKU</th>
                                <th>Category</th>
                                <th class="text-end">Current Stock</th>
                                <th class="text-end">Reorder Level</th>
                                <th>Status</th>
                            </tr>
                        </thead>
                        <tbody>
                            {% for alert in low_stock_alerts %}
                            <tr>
                                <td>
                                    <a href="{% url 'product_detail' alert.product.pk %}">
                                        {{ alert.product.name }}
                                    </a>
                                </td>
                                <td>{{ alert.product.sku }}</td>
                                <td>
                                    {% if alert.product.category %}
                                    <span class="badge bg-info">{{ alert.product.category.name }}</span>
                                    {% endif %}
                                </td>
                                <td class="text-end">
                                    <span class="badge bg-{% if alert.available == 0 %}danger{% else %}warning{% endif %}">
                                        {{ alert.available }}
                                    </span>
                                </td>
                                <td class="text-end">{{ alert.reorder_point }}</td>
                                <td>
                                    {% if alert.available == 0 %}
                                    <span class="badge bg-danger">Out of Stock</span>
                                    {% else %}
                                    <span class="badge bg-warning">Low Stock</span>
                                    {% endif %}
                                </td>
                            </tr>
                            {% endfor %}
                        </tbody>
                    </table>
                </div>
                <div class="text-center mt-2">
                    <a href="{% url 'low_stock_report' %}" class="btn btn-sm btn-outline-warning">
                        View All Low Stock Items
                    </a>
                </div>
                {% else %}
                <div class="text-center py-4">
                    <i class="fas fa-check-circle fa-3x text-success mb-3"></i>
                    <p class="text-muted">No low stock alerts</p>
                </div>
                {% endif %}
            </div>
        </div>
    </div>
</div>

<div class="row">
    <!-- Recent Transfers -->
    <div class="col-lg-12">
        <div class="card">
            <div class="card-header bg-info text-white">
                <div class="d-flex justify-content-between align-items-center">
                    <h6 class="mb-0"><i class="fas fa-truck"></i> Recent Transfers</h6>
                    <a href="{% url 'transfer_list' %}" class="btn btn-sm btn-light">View All</a>
                </div>
            </div>
            <div class="card-body">
                {% if recent_transfers %}
                <div class="table-responsive">
                    <table class="table table-hover">
                        <thead>
                            <tr>
                                <th>Transfer #</th>
                                <th>From Shop</th>
                                <th>To Shop</th>
                                <th>Date</th>
                                <th class="text-end">Items</th>
                                <th class="text-end">Quantity</th>
                                <th>Status</th>
                                <th>Actions</th>
                            </tr>
                        </thead>
                        <tbody>
                            {% for transfer in recent_transfers %}
                            <tr>
                                <td>
                                    <strong>{{ transfer.transfer_number }}</strong>
                                    {% if transfer.priority == 'urgent' %}
                                    <span class="badge bg-danger ms-1">Urgent</span>
                                    {% endif %}
                                </td>
                                <td>{{ transfer.from_shop.name }}</td>
                                <td>{{ transfer.to_shop.name }}</td>
                                <td>{{ transfer.created_at|date:"d M Y" }}</td>
                                <td class="text-end">{{ transfer.total_items }}</td>
                                <td class="text-end">{{ transfer.total_quantity }}</td>
                                <td>
                                    {% if transfer.status == 'pending' %}
                                    <span class="badge bg-warning">Pending</span>
                                    {% elif transfer.status == 'approved' %}
                                    <span class="badge bg-info">Approved</span>
                                    {% elif transfer.status == 'shipped' %}
                                    <span class="badge bg-primary">Shipped</span>
                                    {% elif transfer.status == 'delivered' %}
                                    <span class="badge bg-success">Delivered</span>
                                    {% endif %}
                                </td>
                                <td>
                                    <a href="{% url 'transfer_detail' transfer.pk %}" class="btn btn-sm btn-outline-primary">
                                        <i class="fas fa-eye"></i> View
                                    </a>
                                </td>
                            </tr>
                            {% endfor %}
                        </tbody>
                    </table>
                </div>
                {% else %}
                <div class="text-center py-4">
                    <i class="fas fa-truck fa-3x text-muted mb-3"></i>
                    <p class="text-muted">No recent transfers</p>
                    <a href="{% url 'transfer_create' %}" class="btn btn-primary">
                        <i class="fas fa-plus"></i> Create Transfer
                    </a>
                </div>
                {% endif %}
            </div>
        </div>
    </div>
</div>

<div class="row mt-4">
    <!-- Quick Actions -->
    <div class="col-md-4">
        <div class="card">
            <div class="card-header bg-secondary text-white">
                <h6 class="mb-0"><i class="fas fa-bolt"></i> Quick Actions</h6>
            </div>
            <div class="card-body">
                <div class="d-grid gap-2">
                    <a href="{% url 'product_create' %}" class="btn btn-primary">
                        <i class="fas fa-plus-circle"></i> Add New Product
                    </a>
                    <a href="{% url 'barcode_scan' %}" class="btn btn-success">
                        <i class="fas fa-barcode"></i> Scan Barcode
                    </a>
                    <a href="{% url 'fast_transfer' %}" class="btn btn-info">
                        <i class="fas fa-truck"></i> Fast Transfer
                    </a>
                    <a href="{% url 'warehouse_inventory' %}" class="btn btn-warning">
                        <i class="fas fa-warehouse"></i> Warehouse Inventory
                    </a>
                </div>
            </div>
        </div>
    </div>

    <!-- System Status -->
    <div class="col-md-8">
        <div class="card">
            <div class="card-header bg-dark text-white">
                <h6 class="mb-0"><i class="fas fa-chart-bar"></i> System Status</h6>
            </div>
            <div class="card-body">
                <div class="row text-center">
                    <div class="col-md-3 mb-3">
                        <div class="card bg-light">
                            <div class="card-body">
                                <div class="h4 text-primary">{{ active_products }}</div>
                                <small class="text-muted">Active Products</small>
                            </div>
                        </div>
                    </div>
                    <div class="col-md-3 mb-3">
                        <div class="card bg-light">
                            <div class="card-body">
                                <div class="h4 text-warning">{{ out_of_stock_products }}</div>
                                <small class="text-muted">Out of Stock</small>
                            </div>
                        </div>
                    </div>
                    <div class="col-md-3 mb-3">
                        <div class="card bg-light">
                            <div class="card-body">
                                <div class="h4 text-danger">{{ low_stock_items }}</div>
                                <small class="text-muted">Low Stock</small>
                            </div>
                        </div>
                    </div>
                    <div class="col-md-3 mb-3">
                        <div class="card bg-light">
                            <div class="card-body">
                                <div class="h4 text-success">{{ total_shops }}</div>
                                <small class="text-muted">Active Shops</small>
                            </div>
                        </div>
                    </div>
                </div>
                
                {% if warehouse %}
                <div class="alert alert-info mt-3">
                    <i class="fas fa-info-circle"></i>
                    <strong>Warehouse:</strong> {{ warehouse.name }} ({{ warehouse.code }}) - 
                    {{ total_warehouse_items }} items worth GH₵ {{ total_warehouse_value|floatformat:2 }}
                </div>
                {% else %}
                <div class="alert alert-warning mt-3">
                    <i class="fas fa-exclamation-triangle"></i>
                    <strong>No warehouse found!</strong> 
                    <a href="{% url 'shop_create' %}">Create a warehouse</a> to start managing inventory.
                </div>
                {% endif %}
            </div>
        </div>
    </div>
</div>
{% endblock %}