<?php

namespace Modules\Business\App\Exports;

use App\Models\Product;
use Illuminate\Contracts\View\View;
use Maatwebsite\Excel\Concerns\FromView;

class ExportCurrentStock implements FromView
{
    public function view(): View
    {
        $businessId = auth()->user()->business_id;
        $alert_qty_filter = request('alert_qty');
        $search_term = request('search');
        $per_page = request('per_page', 20);

        // Base query
        $query = Product::with('stocks', 'category:id,categoryName')
            ->where('product_type', '!=', 'combo')
            ->where('business_id', $businessId);

        if ($search_term) {
            $query->where(function ($q) use ($search_term) {
                $q->where('productName', 'like', '%' . $search_term . '%')
                    ->orWhere('productCode', 'like', '%' . $search_term . '%')
                    ->orWhere('hsn_code', 'like', '%' . $search_term . '%')
                    ->orWhereHas('category', function ($q) use ($search_term) {
                        $q->where('categoryName', 'like', '%' . $search_term . '%');
                    });
            });
        }

        if ($alert_qty_filter) {
            $products = $query
                ->withSum('stocks as total_stock', 'productStock')
                ->havingRaw('total_stock <= alert_qty')
                ->latest()
                ->limit($per_page)
                ->get();

            $total_stock_qty = $products->sum('total_stock');

            $total_stock_value = $products->sum(function ($product) {
                return $product->stocks->sum(function ($stock) {
                    return $stock->productStock * $stock->productPurchasePrice;
                });
            });
        } else {
            $products = $query
                ->withSum('stocks as total_stock', 'productStock')
                ->latest()
                ->limit($per_page)
                ->get();

            $total_stock_qty = $products->sum('total_stock');

            $total_stock_value = $products->sum(function ($product) {
                return $product->stocks->sum(function ($stock) {
                    return $stock->productStock * $stock->productPurchasePrice;
                });
            });
        }

        return view('business::stocks.excel-csv', compact('products', 'total_stock_qty', 'total_stock_value'));
    }
}