{% extends 'base.html' %}
{% block content %}

<div class="row g-3 mb-4">
    <div class="col-md-6">
        <a href="?filter=all" class="text-decoration-none">
            <div class="card border-0 shadow-sm p-3 h-100 {% if not active_filter %}border-start border-4 border-primary{% endif %}">
                <div class="d-flex align-items-center">
                    <div class="bg-light rounded-circle p-3 me-3 text-primary"><i class="fas fa-boxes fa-lg"></i></div>
                    <div><h6 class="text-muted small fw-bold mb-0 text-uppercase">Total Items</h6><h4 class="fw-bold mb-0 text-dark">{{ total_products }}</h4></div>
                </div>
            </div>
        </a>
    </div>
    <div class="col-md-6">
        <a href="?filter=low_stock" class="text-decoration-none">
            <div class="card border-0 shadow-sm p-3 h-100 {% if active_filter == 'low_stock' %}border-start border-4 border-danger bg-danger bg-opacity-10{% endif %}">
                <div class="d-flex align-items-center">
                    <div class="bg-danger bg-opacity-10 rounded-circle p-3 me-3 text-danger"><i class="fas fa-exclamation-triangle fa-lg"></i></div>
                    <div><h6 class="text-muted small fw-bold mb-0 text-uppercase">Low Stock Alert</h6><h4 class="fw-bold mb-0 text-danger">{{ low_stock_count }}</h4></div>
                </div>
            </div>
        </a>
    </div>
</div>

<div class="d-flex justify-content-between align-items-center mb-4 gap-3">
    <h4 class="fw-bold text-dark mb-0 d-none d-md-block">Inventory List</h4>
    
    <div class="d-flex gap-2 flex-grow-1 flex-md-grow-0">
        <form class="d-flex" method="GET">
            <div class="input-group">
                <span class="input-group-text bg-white border-end-0"><i class="fas fa-search text-muted"></i></span>
                <input type="text" name="search" class="form-control border-start-0" placeholder="Search..." value="{{ search_query }}">
                {% if active_filter %}<input type="hidden" name="filter" value="{{ active_filter }}">{% endif %}
                
                {% if search_query %}
                <a href="{% url 'inventory_page' %}" class="btn btn-outline-secondary border-start-0 border-end"><i class="fas fa-times"></i></a>
                {% endif %}
            </div>
        </form>
        <button class="btn btn-primary rounded-pill px-4 shadow-sm fw-bold text-nowrap" data-bs-toggle="modal" data-bs-target="#addProductModal"><i class="fas fa-plus me-2"></i> Add Item</button>
    </div>
</div>

<div class="card border-0 shadow-sm rounded-4 overflow-hidden mb-4">
    <div class="table-responsive">
        <table class="table table-hover align-middle mb-0 text-nowrap">
            <thead class="bg-light text-uppercase small text-muted">
                <tr>
                    <th class="ps-4 py-3">Product Name</th>
                    <th class="py-3">Price</th>
                    <th class="py-3 text-center">Total Qty</th>
                    <th class="py-3 text-center">Sold</th>
                    <th class="py-3 text-center">Current Stock</th>
                    <th class="py-3 text-end pe-4">Actions</th>
                </tr>
            </thead>
            <tbody>
                {% for p in products %}
                <tr>
                    <td class="ps-4 fw-bold text-dark">{{ p.name }}</td>
                    <td>Rs. {{ p.price_per_packet }}</td>
                    <td class="text-center text-muted">{{ p.total_quantity }}</td>
                    <td class="text-center fw-bold text-primary">{{ p.sold_stock }}</td>
                    <td class="text-center">
                        {% if p.current_stock <= 0 %}<span class="badge bg-danger px-3 py-2">Out of Stock</span>
                        {% elif p.current_stock < 10 %}<span class="badge bg-warning text-dark px-3 py-2">{{ p.current_stock }} (Low)</span>
                        {% else %}<span class="badge bg-success px-3 py-2">{{ p.current_stock }}</span>{% endif %}
                    </td>
                    <td class="text-end pe-4">
                        <button class="btn btn-sm btn-outline-dark border-0" data-bs-toggle="modal" data-bs-target="#editProductModal{{ p.id }}"><i class="fas fa-edit"></i></button>
                    </td>
                </tr>

                <div class="modal fade" id="editProductModal{{ p.id }}" tabindex="-1" aria-hidden="true">
                    <div class="modal-dialog modal-dialog-centered">
                        <div class="modal-content border-0 shadow-lg rounded-4">
                            <div class="modal-header border-0 pb-0">
                                <h5 class="modal-title fw-bold">Edit Product</h5>
                                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                            </div>
                            <div class="modal-body pt-4">
                                <form action="{% url 'edit_product' p.id %}" method="POST">
                                    {% csrf_token %}
                                    <div class="mb-3">
                                        <label class="form-label fw-bold small text-muted">Name</label>
                                        <input type="text" name="name" class="form-control" value="{{ p.name }}">
                                    </div>
                                    <div class="row g-2">
                                        <div class="col-6">
                                            <label class="form-label fw-bold small text-muted">Price</label>
                                            <input type="number" step="0.01" name="price" class="form-control" value="{{ p.price_per_packet }}">
                                        </div>
                                        <div class="col-6">
                                            <label class="form-label fw-bold small text-muted">Stock</label>
                                            <input type="number" name="current_stock" class="form-control" value="{{ p.current_stock }}">
                                        </div>
                                    </div>
                                    <div class="alert alert-info mt-3 small mb-0"><i class="fas fa-info-circle me-1"></i> Total Quantity updates automatically.</div>
                                    
                                    <div class="mt-4 d-grid">
                                        <button type="submit" class="btn btn-dark fw-bold py-2">Save Changes</button>
                                    </div>
                                </form>
                                <hr class="my-4">
                                <div class="text-center">
                                    <small class="text-danger fw-bold d-block mb-2">To delete this product, clear all fields above and click Save.</small>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                {% empty %}
                <tr><td colspan="6" class="text-center py-5 text-muted">No products found.</td></tr>
                {% endfor %}
            </tbody>
        </table>
    </div>
    
    {% if products.has_other_pages %}
    <div class="card-footer bg-white py-3">
        <nav>
            <ul class="pagination justify-content-center mb-0">
                {% if products.has_previous %}
                    <li class="page-item"><a class="page-link border-0 text-dark" href="?page={{ products.previous_page_number }}&filter={{ active_filter }}&search={{ search_query }}"><i class="fas fa-chevron-left me-1"></i> Prev</a></li>
                {% endif %}
                <li class="page-item disabled"><span class="page-link border-0 fw-bold text-dark">Page {{ products.number }}</span></li>
                {% if products.has_next %}
                    <li class="page-item"><a class="page-link border-0 text-dark" href="?page={{ products.next_page_number }}&filter={{ active_filter }}&search={{ search_query }}">Next <i class="fas fa-chevron-right ms-1"></i></a></li>
                {% endif %}
            </ul>
        </nav>
    </div>
    {% endif %}
</div>

<div class="modal fade" id="addProductModal" tabindex="-1" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered">
        <div class="modal-content border-0 shadow-lg rounded-4">
            <div class="modal-header border-0 pb-0">
                <h5 class="modal-title fw-bold">Add New Product</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body pt-4">
                <form action="{% url 'add_product' %}" method="POST">
                    {% csrf_token %}
                    <div class="mb-3"><label class="form-label fw-bold small text-muted">Product Name</label><input type="text" name="name" class="form-control" required></div>
                    <div class="row g-2">
                        <div class="col-6"><label class="form-label fw-bold small text-muted">Price</label><input type="number" step="0.01" name="price" class="form-control" required></div>
                        <div class="col-6"><label class="form-label fw-bold small text-muted">Initial Quantity</label><input type="number" name="quantity" class="form-control" required></div>
                    </div>
                    <div class="mt-4 d-grid"><button type="submit" class="btn btn-primary fw-bold py-2">Add Product</button></div>
                </form>
            </div>
        </div>
    </div>
</div>
{% endblock %}