{% extends "module_base.html" %}
{% load static %}
{% load indonesian_filters %}

{% block title %}Purchasing Report{% endblock %}

{% block content %}
<div class="container-fluid">
    <div class="row">
        <div class="col-12">
            <div class="card">
                <div class="card-header">
                    <h4 class="card-title mb-0">
                        <i class="fas fa-shopping-cart me-2"></i>Purchasing Report
                    </h4>
                </div>
                <div class="card-body">
                    <!-- Report Filters -->
                    <form method="get" class="row mb-4 g-3">
                        <div class="col-md-3">
                            <label for="date_from" class="form-label">Date From</label>
                            <input type="date" class="form-control" id="date_from" name="date_from" value="{{ date_from }}">
                        </div>
                        <div class="col-md-3">
                            <label for="date_to" class="form-label">Date To</label>
                            <input type="date" class="form-control" id="date_to" name="date_to" value="{{ date_to }}">
                        </div>
                        <div class="col-md-3">
                            <label for="supplier" class="form-label">Supplier</label>
                            <select class="form-select" id="supplier" name="supplier">
                                <option value="">All Suppliers</option>
                                {% for supplier in suppliers %}
                                    <option value="{{ supplier.id }}" {% if supplier.id|stringformat:"s" == request.GET.supplier %}selected{% endif %}>{{ supplier.name }}</option>
                                {% endfor %}
                            </select>
                        </div>
                        <div class="col-md-3">
                            <label for="status" class="form-label">Status</label>
                            <select class="form-select" id="status" name="status">
                                <option value="">All Statuses</option>
                                <option value="ordered" {% if request.GET.status == 'ordered' %}selected{% endif %}>Ordered</option>
                                <option value="completed" {% if request.GET.status == 'completed' %}selected{% endif %}>Completed</option>
                                <option value="cancelled" {% if request.GET.status == 'cancelled' %}selected{% endif %}>Cancelled</option>
                            </select>
                        </div>
                    </form>

                    <!-- Summary Cards -->
                    <div class="row mb-4">
                        <div class="col-md-3">
                            <div class="card bg-success text-white">
                                <div class="card-body text-center">
                                    <h5 class="card-title">Total Orders</h5>
                                    <h3>{{ total_orders|default:0 }}</h3>
                                </div>
                            </div>
                        </div>
                        <div class="col-md-3">
                            <div class="card bg-primary text-white">
                                <div class="card-body text-center">
                                    <h5 class="card-title">Total Cost</h5>
                                    <h3>{{ total_cost|format_rupiah }}</h3>
                                </div>
                            </div>
                        </div>
                        <div class="col-md-3">
                            <div class="card bg-warning text-white">
                                <div class="card-body text-center">
                                    <h5 class="card-title">Avg Order Value</h5>
                                    <h3>{{ avg_order_value|format_rupiah }}</h3>
                                </div>
                            </div>
                        </div>
                        <div class="col-md-3">
                            <div class="card bg-info text-white">
                                <div class="card-body text-center">
                                    <h5 class="card-title">Pending Orders</h5>
                                    <h3>{{ pending_orders|default:0 }}</h3>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Purchase Orders Table -->
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0">Purchase Orders</h5>
                        </div>
                        <div class="card-body">
                            <div class="table-responsive">
                                <table class="table table-striped" id="purchasing_table">
                                    <thead>
                                        <tr>
                                            <th>PO Number</th>
                                            <th>Supplier</th>
                                            <th>Order Date</th>
                                            <th>Expected Delivery</th>
                                            <th>Status</th>
                                            <th>Items</th>
                                            <th>Total Amount</th>
                                        </tr>
                                    </thead>
                                    <tbody>
                                        {% for order in purchase_orders %}
                                            <tr>
                                                <td>{{ order.po_number }}</td>
                                                <td>{{ order.supplier.name }}</td>
                                                <td>{{ order.order_date|date:"d M Y" }}</td>
                                                <td>{{ order.expected_delivery_date|date:"d M Y" }}</td>
                                                <td>
                                                    {% if order.status == 'ordered' %}
                                                        <span class="badge bg-warning">Ordered</span>
                                                    {% elif order.status == 'completed' %}
                                                        <span class="badge bg-success">Completed</span>
                                                    {% elif order.status == 'cancelled' %}
                                                        <span class="badge bg-danger">Cancelled</span>
                                                    {% endif %}
                                                </td>
                                                <td>{{ order.items.count }}</td>
                                                <td>{{ order.total_amount|format_rupiah }}</td>
                                            </tr>
                                        {% empty %}
                                            <tr>
                                                <td colspan="7" class="text-center text-muted">
                                                    No purchase orders found for the selected period.
                                                </td>
                                            </tr>
                                        {% endfor %}
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>

                    <!-- Top Products -->
                    <div class="card mt-4">
                        <div class="card-header">
                            <h5 class="mb-0">Top Purchased Products</h5>
                        </div>
                        <div class="card-body">
                            <div class="table-responsive">
                                <table class="table table-striped">
                                    <thead>
                                        <tr>
                                            <th>Product</th>
                                            <th>Quantity Purchased</th>
                                            <th>Total Cost</th>
                                            <th>% of Total Purchases</th>
                                        </tr>
                                    </thead>
                                    <tbody>
                                        {% for product in top_products %}
                                            <tr>
                                                <td>{{ product.product__name }}</td>
                                                <td>{{ product.total_quantity }}</td>
                                                <td>{{ product.total_cost|format_rupiah }}</td>
                                                <td>{{ product.percentage }}%</td>
                                            </tr>
                                        {% empty %}
                                            <tr>
                                                <td colspan="4" class="text-center text-muted">
                                                    No product purchasing data available.
                                                </td>
                                            </tr>
                                        {% endfor %}
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>

                    <!-- Export Options -->
                    <div class="mt-4 text-center">
                        <div class="btn-group">
                            <a href="{% url 'reports:purchasing_report' %}?export=excel" class="btn btn-outline-primary">
                                <i class="fas fa-file-excel me-2"></i>Export to Excel
                            </a>
                            <button class="btn btn-outline-danger" onclick="exportToPDF()">
                                <i class="fas fa-file-pdf me-2"></i>Export to PDF
                            </button>
                            <button class="btn btn-outline-secondary" onclick="printReport()">
                                <i class="fas fa-print me-2"></i>Print Report
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
document.addEventListener('DOMContentLoaded', function() {
    // Set default date range (last 30 days)
    const today = new Date();
    const thirtyDaysAgo = new Date();
    thirtyDaysAgo.setDate(today.getDate() - 30);

    const dateFromInput = document.getElementById('date_from');
    const dateToInput = document.getElementById('date_to');

    if (dateFromInput && !dateFromInput.value) {
        dateFromInput.value = thirtyDaysAgo.toISOString().split('T')[0];
    }
    if (dateToInput && !dateToInput.value) {
        dateToInput.value = today.toISOString().split('T')[0];
    }

    // Auto-submit form when filters change
    document.querySelectorAll('select').forEach(select => {
        select.addEventListener('change', function() {
            this.closest('form').submit();
        });
    });
});

function exportToExcel() {
    // Get current filter parameters
    const urlParams = new URLSearchParams(window.location.search);
    urlParams.set('export', 'excel');

    // Create export URL with current filters
    const exportUrl = window.location.pathname + '?' + urlParams.toString();
    window.location.href = exportUrl;
}

function exportToPDF() {
    alert('PDF export functionality would be implemented here');
}

function printReport() {
    window.print();
}
</script>
{% endblock %}