<?php

namespace Modules\Business\App\Http\Controllers;

use App\Models\Product;
use App\Http\Controllers\Controller;
use App\Services\PdfService;
use Maatwebsite\Excel\Facades\Excel;
use Modules\Business\App\Exports\ExportCurrentStock;

class AcnooStockController extends Controller
{
    public function __construct()
    {
        $this->middleware('check.permission:stocks.read')->only(['index']);
    }

    public function index()
    {
        $businessId = auth()->user()->business_id;
        $alert_qty_filter = request('alert_qty');
        $search_term = request('search');
        $per_page = request('per_page', 20);

        $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 = $query
                ->withSum('stocks as total_stock', 'productStock')
                ->whereRaw('(SELECT COALESCE(SUM("productStock"),0) FROM stocks WHERE stocks.product_id = products.id) <= products.alert_qty')
                ->latest()
                ->paginate($per_page)
                ->appends(request()->query());

            $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 = $query
                ->withSum('stocks as total_stock', 'productStock')
                ->latest()
                ->paginate($per_page)
                ->appends(request()->query());

            $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;
                });
            });
        }

        if (request()->ajax()) {
            return response()->json([
                'data' => view('business::stocks.datas', compact('products', 'total_stock_value', 'total_stock_qty'))->render(),
                'total_stock_qty' => $total_stock_qty,
                'total_stock_value' => currency_format($total_stock_value, currency: business_currency())
            ]);
        }

        return view('business::stocks.index', [
            'products' => $products,
            'total_stock_value' => $total_stock_value,
            'total_stock_qty' => $total_stock_qty,
        ]);
    }

    public function exportExcel()
    {
        return Excel::download(new ExportCurrentStock, 'stock-list.xlsx');
    }

    public function exportCsv()
    {
        return Excel::download(new ExportCurrentStock, 'stock-list.csv');
    }

    public function exportPdf()
    {
        $businessId = auth()->user()->business_id;
        $alert_qty_filter = request('alert_qty');
        $search_term = request('search');
        $per_page = request('per_page', 20);

        $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 = $query
                ->withSum('stocks as total_stock', 'productStock')
                ->havingRaw('total_stock <= products.alert_qty')
                ->latest()
                ->limit($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 PdfService::render('business::stocks.pdf', compact('products', 'total_stock_qty', 'total_stock_value'), 'stock-list.pdf');
    }
}