<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Customer;
use App\Models\CustomerGroup;
use App\Models\Warehouse;
use App\Models\Biller;
use App\Models\Product;
use App\Models\Unit;
use App\Models\Tax;
use App\Models\Product_Warehouse;
use App\Models\ProductBatch;
use DB;
use App\Models\Returns;
use App\Models\Account;
use App\Models\ProductReturn;
use App\Models\ProductVariant;
use App\Models\Variant;
use App\Models\CashRegister;
use App\Models\Sale;
use App\Models\Product_Sale;
use App\Models\Currency;
use Auth;
use Spatie\Permission\Models\Role;
use Spatie\Permission\Models\Permission;
use App\Mail\ReturnDetails;
use Mail;
use Illuminate\Support\Facades\Validator;
use App\Models\MailSetting;
use App\Traits\MailInfo;
use App\Traits\StaffAccess;
use App\Traits\TenantInfo;

class ReturnController extends Controller
{
    use TenantInfo, MailInfo, StaffAccess;

    public function index(Request $request)
    {
        $role = Role::find(Auth::user()->role_id);
        if($role->hasPermissionTo('returns-index')) {
            $permissions = Role::findByName($role->name)->permissions;
            foreach ($permissions as $permission)
                $all_permission[] = $permission->name;
            if(empty($all_permission))
                $all_permission[] = 'dummy text';

            if($request->input('warehouse_id'))
                $warehouse_id = $request->input('warehouse_id');
            else
                $warehouse_id = 0;

            if($request->input('starting_date')) {
                $starting_date = $request->input('starting_date');
                $ending_date = $request->input('ending_date');
            }
            else {
                $starting_date = date("Y-m-d", strtotime(date('Y-m-d', strtotime('-1 year', strtotime(date('Y-m-d') )))));
                $ending_date = date("Y-m-d");
            }

            $lims_warehouse_list = Warehouse::where('is_active', true)->get();
            return view('backend.return.index',compact('starting_date', 'ending_date', 'warehouse_id', 'all_permission', 'lims_warehouse_list'));
        }
        else
            return redirect()->back()->with('not_permitted', 'Sorry! You are not allowed to access this module');
    }

    public function returnData(Request $request)
    {
        $columns = array(
            1 => 'created_at',
            2 => 'reference_no',
        );

        $warehouse_id = $request->input('warehouse_id');

        if(Auth::user()->role_id > 2 && config('staff_access') == 'own')
            $totalData = Returns::where('user_id', Auth::id())
                        ->whereDate('created_at', '>=' ,$request->input('starting_date'))
                        ->whereDate('created_at', '<=' ,$request->input('ending_date'))
                        ->count();
        elseif(Auth::user()->role_id > 2 && config('staff_access') == 'warehouse')
            $totalData = Returns::where('warehouse_id', Auth::user()->warehouse_id)
                        ->whereDate('created_at', '>=' ,$request->input('starting_date'))
                        ->whereDate('created_at', '<=' ,$request->input('ending_date'))
                        ->count();
        elseif($warehouse_id != 0)
            $totalData = Returns::where('warehouse_id', $warehouse_id)
                        ->whereDate('created_at', '>=' ,$request->input('starting_date'))
                        ->whereDate('created_at', '<=' ,$request->input('ending_date'))
                        ->count();
        else
            $totalData = Returns::whereDate('created_at', '>=' ,$request->input('starting_date'))
                        ->whereDate('created_at', '<=' ,$request->input('ending_date'))
                        ->count();

        $totalFiltered = $totalData;
        if($request->input('length') != -1)
            $limit = $request->input('length');
        else
            $limit = $totalData;
        $start = $request->input('start');
        $order = 'returns.'.$columns[$request->input('order.0.column')];
        $dir = $request->input('order.0.dir');
        if(empty($request->input('search.value'))) {
            $q = Returns::with('biller', 'customer', 'warehouse', 'user')
                ->whereDate('created_at', '>=' ,$request->input('starting_date'))
                ->whereDate('created_at', '<=' ,$request->input('ending_date'))
                ->offset($start)
                ->limit($limit)
                ->orderBy($order, $dir);
            if(Auth::user()->role_id > 2 && config('staff_access') == 'own')
                $q = $q->where('user_id', Auth::id());
            elseif(Auth::user()->role_id > 2 && config('staff_access') == 'warehouse')
                $q->where('warehouse_id', Auth::user()->warehouse_id);
            elseif($warehouse_id != 0)
                $q = $q->where('warehouse_id', $warehouse_id);
            $returnss = $q->get();
        }
        else
        {
            $search = $request->input('search.value');
            $q = Returns::join('customers', 'returns.customer_id', '=', 'customers.id')
                ->join('billers', 'returns.biller_id', '=', 'billers.id')
                ->whereDate('returns.created_at', '=' , date('Y-m-d', strtotime(str_replace('/', '-', $search))))
                ->offset($start)
                ->limit($limit)
                ->orderBy($order,$dir);
            if(Auth::user()->role_id > 2 && config('staff_access') == 'own') {
                $returnss =  $q->select('returns.*')
                            ->with('biller', 'customer', 'warehouse', 'user')
                            ->where('returns.user_id', Auth::id())
                            ->orwhere([
                                ['returns.reference_no', 'LIKE', "%{$search}%"],
                                ['returns.user_id', Auth::id()]
                            ])
                            ->orwhere([
                                ['customers.name', 'LIKE', "%{$search}%"],
                                ['returns.user_id', Auth::id()]
                            ])
                            ->orwhere([
                                ['customers.phone_number', 'LIKE', "%{$search}%"],
                                ['returns.user_id', Auth::id()]
                            ])
                            ->orwhere([
                                ['billers.name', 'LIKE', "%{$search}%"],
                                ['returns.user_id', Auth::id()]
                            ])->get();

                $totalFiltered = $q->where('returns.user_id', Auth::id())
                                ->orwhere([
                                    ['returns.reference_no', 'LIKE', "%{$search}%"],
                                    ['returns.user_id', Auth::id()]
                                ])
                                ->orwhere([
                                    ['customers.name', 'LIKE', "%{$search}%"],
                                    ['returns.user_id', Auth::id()]
                                ])
                                ->orwhere([
                                    ['customers.phone_number', 'LIKE', "%{$search}%"],
                                    ['returns.user_id', Auth::id()]
                                ])
                                ->orwhere([
                                    ['billers.name', 'LIKE', "%{$search}%"],
                                    ['returns.user_id', Auth::id()]
                                ])
                                ->count();
            }
            elseif(Auth::user()->role_id > 2 && config('staff_access') == 'warehouse') {
                $returnss =  $q->select('returns.*')
                            ->with('biller', 'customer', 'warehouse', 'user')
                            ->where('returns.user_id', Auth::id())
                            ->orwhere([
                                ['returns.reference_no', 'LIKE', "%{$search}%"],
                                ['returns.warehouse_id', Auth::user()->warehouse_id]
                            ])
                            ->orwhere([
                                ['customers.name', 'LIKE', "%{$search}%"],
                                ['returns.warehouse_id', Auth::user()->warehouse_id]
                            ])
                            ->orwhere([
                                ['customers.phone_number', 'LIKE', "%{$search}%"],
                                ['returns.warehouse_id', Auth::user()->warehouse_id]
                            ])
                            ->orwhere([
                                ['billers.name', 'LIKE', "%{$search}%"],
                                ['returns.warehouse_id', Auth::user()->warehouse_id]
                            ])->get();

                $totalFiltered = $q->where('returns.user_id', Auth::id())
                                ->orwhere([
                                    ['returns.reference_no', 'LIKE', "%{$search}%"],
                                    ['returns.warehouse_id', Auth::user()->warehouse_id]
                                ])
                                ->orwhere([
                                    ['customers.name', 'LIKE', "%{$search}%"],
                                    ['returns.warehouse_id', Auth::user()->warehouse_id]
                                ])
                                ->orwhere([
                                    ['customers.phone_number', 'LIKE', "%{$search}%"],
                                    ['returns.warehouse_id', Auth::user()->warehouse_id]
                                ])
                                ->orwhere([
                                    ['billers.name', 'LIKE', "%{$search}%"],
                                    ['returns.warehouse_id', Auth::user()->warehouse_id]
                                ])
                                ->count();
            }           
            else {
                $returnss =  $q->select('returns.*')
                            ->with('biller', 'customer', 'warehouse', 'user')
                            ->orwhere('returns.reference_no', 'LIKE', "%{$search}%")
                            ->orwhere('customers.name', 'LIKE', "%{$search}%")
                            ->orwhere('customers.phone_number', 'LIKE', "%{$search}%")
                            ->orwhere('billers.name', 'LIKE', "%{$search}%")
                            ->get();

                $totalFiltered = $q->orwhere('returns.reference_no', 'LIKE', "%{$search}%")
                                ->orwhere('customers.name', 'LIKE', "%{$search}%")
                                ->orwhere('customers.phone_number', 'LIKE', "%{$search}%")
                                ->orwhere('billers.name', 'LIKE', "%{$search}%")
                                ->count();
            }
        }
        $data = array();
        if(!empty($returnss))
        {
            foreach ($returnss as $key=>$returns)
            {
                $nestedData['id'] = $returns->id;
                $nestedData['key'] = $key;
                $nestedData['date'] = date(config('date_format'), strtotime($returns->created_at->toDateString()));
                $nestedData['reference_no'] = $returns->reference_no;
                if($returns->sale_id) {
                    $sale_data = Sale::select('reference_no')->find($returns->sale_id);
                    if($sale_data)
                        $nestedData['sale_reference'] = $sale_data->reference_no;
                    else
                        $nestedData['sale_reference'] = 'N/A';
                }
                else
                    $nestedData['sale_reference'] = 'N/A';
                $nestedData['warehouse'] = $returns->warehouse->name;
                $nestedData['biller'] = $returns->biller->name;
                $nestedData['customer'] = $returns->customer->name;
                $nestedData['grand_total'] = number_format($returns->grand_total, config('decimal'));
                $nestedData['options'] = '<div class="btn-group">
                            <button type="button" class="btn btn-default btn-sm dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">'.trans("file.action").'
                              <span class="caret"></span>
                              <span class="sr-only">Toggle Dropdown</span>
                            </button>
                            <ul class="dropdown-menu edit-options dropdown-menu-right dropdown-default" user="menu">
                                <li>
                                    <button type="button" class="btn btn-link view"><i class="fa fa-eye"></i> '.trans('file.View').'</button>
                                </li>';
                if(in_array("returns-edit", $request['all_permission'])) {
                    $nestedData['options'] .= '<li>
                        <a href="'.route('return-sale.edit', $returns->id).'" class="btn btn-link"><i class="dripicons-document-edit"></i> '.trans('file.edit').'</a>
                        </li>';
                }
                if(in_array("returns-delete", $request['all_permission']))
                    $nestedData['options'] .= \Form::open(["route" => ["return-sale.destroy", $returns->id], "method" => "DELETE"] ).'
                            <li>
                              <button type="submit" class="btn btn-link" onclick="return confirmDelete()"><i class="dripicons-trash"></i> '.trans("file.delete").'</button>
                            </li>'.\Form::close().'
                        </ul>
                    </div>';

                if($returns->currency_id)
                    $currency_code = Currency::select('code')->find($returns->currency_id)->code;
                else
                    $currency_code = 'N/A';

                $nestedData['return'] = array( '[ "'.date(config('date_format'), strtotime($returns->created_at->toDateString())).'"', ' "'.$returns->reference_no.'"', ' "'.$returns->warehouse->name.'"', ' "'.$returns->biller->name.'"', ' "'.$returns->biller->company_name.'"', ' "'.$returns->biller->email.'"', ' "'.$returns->biller->phone_number.'"', ' "'.$returns->biller->address.'"', ' "'.$returns->biller->city.'"', ' "'.$returns->customer->name.'"', ' "'.$returns->customer->phone_number.'"', ' "'.$returns->customer->address.'"', ' "'.$returns->customer->city.'"', ' "'.$returns->id.'"', ' "'.$returns->total_tax.'"', ' "'.$returns->total_discount.'"', ' "'.$returns->total_price.'"', ' "'.$returns->order_tax.'"', ' "'.$returns->order_tax_rate.'"', ' "'.$returns->grand_total.'"', ' "'.preg_replace('/[\n\r]/', "<br>", $returns->return_note).'"', ' "'.preg_replace('/[\n\r]/', "<br>", $returns->staff_note).'"', ' "'.$returns->user->name.'"', ' "'.$returns->user->email.'"', ' "'.$nestedData['sale_reference'].'"', ' "'.$returns->document.'"', ' "'.$currency_code.'"', ' "'.$returns->exchange_rate.'"]'
                );
                $data[] = $nestedData;
            }
        }
        $json_data = array(
            "draw"            => intval($request->input('draw')),
            "recordsTotal"    => intval($totalData),
            "recordsFiltered" => intval($totalFiltered),
            "data"            => $data
        );

        echo json_encode($json_data);
    }

    public function create(Request $request)
    {
        $role = Role::find(Auth::user()->role_id);
        if($role->hasPermissionTo('returns-add')) {
            $lims_sale_data = Sale::where([
                ['reference_no', $request->input('reference_no')],
                ['sale_status', 1]
            ])->select('id', 'sale_status')->first();
            if(!$lims_sale_data)
                return redirect()->back()->with('not_permitted', 'This reference either does not exist or status not completed!');
            $lims_product_sale_data = Product_Sale::where('sale_id', $lims_sale_data->id)->get();
            $lims_tax_list = Tax::where('is_active',true)->get();
            $lims_warehouse_list = Warehouse::where('is_active',true)->get();
            return view('backend.return.create', compact('lims_tax_list', 'lims_sale_data', 'lims_product_sale_data', 'lims_warehouse_list'));
        }
        else
            return redirect()->back()->with('not_permitted', 'Sorry! You are not allowed to access this module');
    }

    public function getCustomerGroup($id)
    {
         $lims_customer_data = Customer::find($id);
         $lims_customer_group_data = CustomerGroup::find($lims_customer_data->customer_group_id);
         return $lims_customer_group_data->percentage;
    }

    public function getProduct($id)
    {
        //retrieve data of product without variant
        $lims_product_warehouse_data = Product::join('product_warehouse', 'products.id', '=', 'product_warehouse.product_id')
        ->where([
            ['products.is_active', true],
            ['product_warehouse.warehouse_id', $id],
        ])
        ->whereNull('product_warehouse.variant_id')
        ->whereNull('product_warehouse.product_batch_id')
        ->select('product_warehouse.*')
        ->get();

        config()->set('database.connections.mysql.strict', false);
        \DB::reconnect(); //important as the existing connection if any would be in strict mode

        $lims_product_with_batch_warehouse_data = Product::join('product_warehouse', 'products.id', '=', 'product_warehouse.product_id')
        ->where([
            ['products.is_active', true],
            ['product_warehouse.warehouse_id', $id],
        ])
        ->whereNull('product_warehouse.variant_id')
        ->whereNotNull('product_warehouse.product_batch_id')
        ->select('product_warehouse.*')
        ->groupBy('product_warehouse.product_id')
        ->get();

        //now changing back the strict ON
        config()->set('database.connections.mysql.strict', true);
        \DB::reconnect();

        //retrieve data of product with variant
        $lims_product_with_variant_warehouse_data = Product::join('product_warehouse', 'products.id', '=', 'product_warehouse.product_id')
        ->where([
            ['products.is_active', true],
            ['product_warehouse.warehouse_id', $id],
        ])->whereNotNull('product_warehouse.variant_id')->select('product_warehouse.*')->get();

        $product_code = [];
        $product_name = [];
        $product_qty = [];
        $product_price = [];
        $product_type = [];
        $is_batch = [];
        $product_data = [];
        foreach ($lims_product_warehouse_data as $product_warehouse)
        {
            $product_qty[] = $product_warehouse->qty;
            $product_price[] = $product_warehouse->price;
            $lims_product_data = Product::select('code', 'name', 'type', 'is_batch')->find($product_warehouse->product_id);
            $product_code[] =  $lims_product_data->code;
            $product_name[] = htmlspecialchars($lims_product_data->name);
            $product_type[] = $lims_product_data->type;
            $is_batch[] = null;
        }
        //product with batches
        foreach ($lims_product_with_batch_warehouse_data as $product_warehouse)
        {
            $product_qty[] = $product_warehouse->qty;
            $product_price[] = $product_warehouse->price;
            $lims_product_data = Product::select('code', 'name', 'type', 'is_batch')->find($product_warehouse->product_id);
            $product_code[] =  $lims_product_data->code;
            $product_name[] = htmlspecialchars($lims_product_data->name);
            $product_type[] = $lims_product_data->type;
            $product_batch_data = ProductBatch::select('id', 'batch_no')->find($product_warehouse->product_batch_id);
            $is_batch[] = $lims_product_data->is_batch;
        }
        foreach ($lims_product_with_variant_warehouse_data as $product_warehouse)
        {
            $product_qty[] = $product_warehouse->qty;
            $lims_product_data = Product::select('name', 'type')->find($product_warehouse->product_id);
            $lims_product_variant_data = ProductVariant::select('item_code')->FindExactProduct($product_warehouse->product_id, $product_warehouse->variant_id)->first();
            $product_code[] =  $lims_product_variant_data->item_code;
            $product_name[] = htmlspecialchars($lims_product_data->name);
            $product_type[] = $lims_product_data->type;
            $is_batch[] = null;
        }
        $lims_product_data = Product::select('code', 'name', 'type')->where('is_active', true)->whereNotIn('type', ['standard'])->get();
        foreach ($lims_product_data as $product)
        {
            $product_qty[] = $product->qty;
            $product_code[] =  $product->code;
            $product_name[] = htmlspecialchars($product->name);
            $product_type[] = $product->type;
            $is_batch[] = null;
        }
        $product_data[] = $product_code;
        $product_data[] = $product_name;
        $product_data[] = $product_qty;
        $product_data[] = $product_type;
        $product_data[] = $product_price;
        $product_data[] = $is_batch;
        return $product_data;
    }

    public function limsProductSearch(Request $request)
    {
        $todayDate = date('Y-m-d');
        $product_code = explode("(", $request['data']);
        $product_code[0] = rtrim($product_code[0], " ");
        $lims_product_data = Product::where('code', $product_code[0])->first();
        $product_variant_id = null;
        if(!$lims_product_data) {
            $lims_product_data = Product::join('product_variants', 'products.id', 'product_variants.product_id')
                ->select('products.*', 'product_variants.id as product_variant_id', 'product_variants.item_code', 'product_variants.additional_price')
                ->where('product_variants.item_code', $product_code[0])
                ->first();
            $lims_product_data->code = $lims_product_data->item_code;
            $lims_product_data->price += $lims_product_data->additional_price;
            $product_variant_id = $lims_product_data->product_variant_id;
        }
        $product[] = $lims_product_data->name;
        $product[] = $lims_product_data->code;
        if($lims_product_data->promotion && $todayDate <= $lims_product_data->last_date){
            $product[] = $lims_product_data->promotion_price;
        }
        else
            $product[] = $lims_product_data->price;

        if($lims_product_data->tax_id) {
            $lims_tax_data = Tax::find($lims_product_data->tax_id);
            $product[] = $lims_tax_data->rate;
            $product[] = $lims_tax_data->name;
        }
        else{
            $product[] = 0;
            $product[] = 'No Tax';
        }
        $product[] = $lims_product_data->tax_method;
        if($lims_product_data->type == 'standard'){
            $units = Unit::where("base_unit", $lims_product_data->unit_id)
                    ->orWhere('id', $lims_product_data->unit_id)
                    ->get();
            $unit_name = array();
            $unit_operator = array();
            $unit_operation_value = array();
            foreach ($units as $unit) {
                if($lims_product_data->sale_unit_id == $unit->id) {
                    array_unshift($unit_name, $unit->unit_name);
                    array_unshift($unit_operator, $unit->operator);
                    array_unshift($unit_operation_value, $unit->operation_value);
                }
                else {
                    $unit_name[]  = $unit->unit_name;
                    $unit_operator[] = $unit->operator;
                    $unit_operation_value[] = $unit->operation_value;
                }
            }
            $product[] = implode(",",$unit_name) . ',';
            $product[] = implode(",",$unit_operator) . ',';
            $product[] = implode(",",$unit_operation_value) . ',';
        }

        else{
            $product[] = 'n/a'. ',';
            $product[] = 'n/a'. ',';
            $product[] = 'n/a'. ',';
        }
        $product[] = $lims_product_data->id;
        $product[] = $product_variant_id;
        $product[] = $lims_product_data->promotion;
        $product[] = $lims_product_data->is_imei;
        return $product;
    }

    public function store(Request $request)
    {
        $data = $request->except('document');
        $data['reference_no'] = 'rr-' . date("Ymd") . '-'. date("his");
        $data['user_id'] = Auth::id();
        $lims_sale_data = Sale::select('id', 'warehouse_id', 'customer_id', 'biller_id', 'currency_id', 'exchange_rate', 'sale_status')->find($data['sale_id']);
        $data['user_id'] = Auth::id();
        $data['customer_id'] = $lims_sale_data->customer_id;
        $data['warehouse_id'] = $lims_sale_data->warehouse_id;
        $data['biller_id'] = $lims_sale_data->biller_id;
        $data['currency_id'] = $lims_sale_data->currency_id;
        $data['exchange_rate'] = $lims_sale_data->exchange_rate;
        $cash_register_data = CashRegister::where([
            ['user_id', $data['user_id']],
            ['warehouse_id', $data['warehouse_id']],
            ['status', true]
        ])->first();
        if($cash_register_data)
            $data['cash_register_id'] = $cash_register_data->id;
        $lims_account_data = Account::where('is_default', true)->first();
        $data['account_id'] = $lims_account_data->id;
        $document = $request->document;
        if ($document) {
            $v = Validator::make(
                [
                    'extension' => strtolower($request->document->getClientOriginalExtension()),
                ],
                [
                    'extension' => 'in:jpg,jpeg,png,gif,pdf,csv,docx,xlsx,txt',
                ]
            );
            if ($v->fails())
                return redirect()->back()->withErrors($v->errors());

            $ext = pathinfo($document->getClientOriginalName(), PATHINFO_EXTENSION);
            $documentName = date("Ymdhis");
            if(!config('database.connections.saleprosaas_landlord')) {
                $documentName = $documentName . '.' . $ext;
                $document->move('public/documents/sale_return', $documentName);
            }
            else {
                $documentName = $this->getTenantId() . '_' . $documentName . '.' . $ext;
                $document->move('public/documents/sale_return', $documentName);
            }
            $data['document'] = $documentName;
        }

        $lims_return_data = Returns::create($data);
        $lims_customer_data = Customer::find($data['customer_id']);
        //collecting male data
        $mail_data['email'] = $lims_customer_data->email;
        $mail_data['reference_no'] = $lims_return_data->reference_no;
        $mail_data['total_qty'] = $lims_return_data->total_qty;
        $mail_data['total_price'] = $lims_return_data->total_price;
        $mail_data['order_tax'] = $lims_return_data->order_tax;
        $mail_data['order_tax_rate'] = $lims_return_data->order_tax_rate;
        $mail_data['grand_total'] = $lims_return_data->grand_total;

        $product_id = $data['is_return'];
        $imei_number = $data['imei_number'];
        $product_batch_id = $data['product_batch_id'];
        $product_code = $data['product_code'];
        $qty = $data['qty'];
        $sale_unit = $data['sale_unit'];
        $net_unit_price = $data['net_unit_price'];
        $discount = $data['discount'];
        $tax_rate = $data['tax_rate'];
        $tax = $data['tax'];
        $total = $data['subtotal'];

        foreach ($product_id as $pro_id) {
            $key = array_search($pro_id, $data['product_id']);
            //return $key;
            $lims_product_data = Product::find($pro_id);
            $variant_id = null;
            if($sale_unit[$key] != 'n/a') {
                $lims_sale_unit_data  = Unit::where('unit_name', $sale_unit[$key])->first();
                $sale_unit_id = $lims_sale_unit_data->id;
                if($lims_sale_unit_data->operator == '*')
                    $quantity = $qty[$key] * $lims_sale_unit_data->operation_value;
                elseif($lims_sale_unit_data->operator == '/')
                    $quantity = $qty[$key] / $lims_sale_unit_data->operation_value;

                if($lims_product_data->is_variant) {
                    $lims_product_variant_data = ProductVariant::
                        select('id', 'variant_id', 'qty')
                        ->FindExactProductWithCode($pro_id, $product_code[$key])
                        ->first();
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithVariant($pro_id, $lims_product_variant_data->variant_id, $data['warehouse_id'])->first();
                    $lims_product_variant_data->qty += $quantity;
                    $lims_product_variant_data->save();
                    $variant_data = Variant::find($lims_product_variant_data->variant_id);
                    $variant_id = $variant_data->id;
                }
                elseif($product_batch_id[$key]) {
                    $lims_product_warehouse_data = Product_Warehouse::where([
                        ['product_batch_id', $product_batch_id[$key] ],
                        ['warehouse_id', $data['warehouse_id'] ]
                    ])->first();
                    $lims_product_batch_data = ProductBatch::find($product_batch_id[$key]);
                    //increase product batch quantity
                    $lims_product_batch_data->qty += $quantity;
                    $lims_product_batch_data->save();
                }
                else
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithoutVariant($pro_id, $data['warehouse_id'])->first();

                $lims_product_data->qty +=  $quantity;
                $lims_product_warehouse_data->qty += $quantity;

                $lims_product_data->save();
                $lims_product_warehouse_data->save();
            }
            else {
                if($lims_product_data->type == 'combo') {
                    $product_list = explode(",", $lims_product_data->product_list);
                    if($lims_product_data->variant_list)
                        $variant_list = explode(",", $lims_product_data->variant_list);
                    else
                        $variant_list = [];
                    $qty_list = explode(",", $lims_product_data->qty_list);
                    $price_list = explode(",", $lims_product_data->price_list);
                    foreach ($product_list as $index => $child_id) {
                        $child_data = Product::find($child_id);
                        if(count($variant_list) && $variant_list[$index]) {
                            $child_product_variant_data = ProductVariant::where([
                                ['product_id', $child_id],
                                ['variant_id', $variant_list[$index]]
                            ])->first();

                            $child_warehouse_data = Product_Warehouse::where([
                                ['product_id', $child_id],
                                ['variant_id', $variant_list[$index]],
                                ['warehouse_id', $data['warehouse_id'] ],
                            ])->first();

                            $child_product_variant_data->qty += $qty[$key] * $qty_list[$index];
                            $child_product_variant_data->save();
                        }
                        else {
                            $child_warehouse_data = Product_Warehouse::where([
                                ['product_id', $child_id],
                                ['warehouse_id', $data['warehouse_id'] ],
                            ])->first();
                        }

                        $child_data->qty += $qty[$key] * $qty_list[$index];
                        $child_warehouse_data->qty += $qty[$key] * $qty_list[$index];

                        $child_data->save();
                        $child_warehouse_data->save();
                    }
                }
                $sale_unit_id = 0;
            }
            //add imei number if available
            if($imei_number[$key]) {
                if($lims_product_warehouse_data->imei_number)
                    $lims_product_warehouse_data->imei_number .= ',' . $imei_number[$key];
                 else
                    $lims_product_warehouse_data->imei_number = $imei_number[$key];
                $lims_product_warehouse_data->save();
            }
            if($lims_product_data->is_variant)
                $mail_data['products'][$key] = $lims_product_data->name . ' [' . $variant_data->name . ']';
            else
                $mail_data['products'][$key] = $lims_product_data->name;

            if($sale_unit_id)
                $mail_data['unit'][$key] = $lims_sale_unit_data->unit_code;
            else
                $mail_data['unit'][$key] = '';

            $mail_data['qty'][$key] = $qty[$key];
            $mail_data['total'][$key] = $total[$key];
            ProductReturn::insert(
                ['return_id' => $lims_return_data->id, 'product_id' => $pro_id, 'product_batch_id' => $product_batch_id[$key], 'variant_id' => $variant_id, 'imei_number' => $imei_number[$key], 'qty' => $qty[$key], 'sale_unit_id' => $sale_unit_id, 'net_unit_price' => $net_unit_price[$key], 'discount' => $discount[$key], 'tax_rate' => $tax_rate[$key], 'tax' => $tax[$key], 'total' => $total[$key], 'created_at' => \Carbon\Carbon::now(),  'updated_at' => \Carbon\Carbon::now()]
            );
            $product_sale_data = Product_Sale::where([
                                    ['product_id', $pro_id],
                                    ['sale_id', $data['sale_id']]
                                ])->select('id', 'return_qty')->first();
            $product_sale_data->return_qty += $qty[$key];
            $product_sale_data->save();
        }
        $message = 'Return created successfully';
        if($data['change_sale_status'])
            $lims_sale_data->update(['sale_status' => 4]);
        $mail_setting = MailSetting::latest()->first();
        if($mail_data['email'] && $mail_setting) {
            $this->setMailInfo($mail_setting);
            try{
                Mail::to($mail_data['email'])->send(new ReturnDetails($mail_data));
            }
            catch(\Exception $e){
                $message = 'Return created successfully. Please setup your <a href="setting/mail_setting">mail setting</a> to send mail.';
            }
        }
        return redirect('return-sale')->with('message', $message);
    }

    public function sendMail(Request $request)
    {
        $data = $request->all();
        $lims_return_data = Returns::find($data['return_id']);
        $lims_product_return_data = ProductReturn::where('return_id', $data['return_id'])->get();
        $lims_customer_data = Customer::find($lims_return_data->customer_id);
        $mail_setting = MailSetting::latest()->first();

        if(!$mail_setting) {
            $message = 'Please setup your <a href="setting/mail_setting">mail setting</a> to send mail.';
        }else if(!$lims_customer_data->email) {
            $message = 'Customer doesnt have email!';
        }
        else if($lims_customer_data->email && $mail_setting) {
            //collecting male data
            $mail_data['email'] = $lims_customer_data->email;
            $mail_data['reference_no'] = $lims_return_data->reference_no;
            $mail_data['total_qty'] = $lims_return_data->total_qty;
            $mail_data['total_price'] = $lims_return_data->total_price;
            $mail_data['order_tax'] = $lims_return_data->order_tax;
            $mail_data['order_tax_rate'] = $lims_return_data->order_tax_rate;
            $mail_data['grand_total'] = $lims_return_data->grand_total;

            foreach ($lims_product_return_data as $key => $product_return_data) {
                $lims_product_data = Product::find($product_return_data->product_id);
                if($product_return_data->variant_id){
                    $variant_data = Variant::find($product_return_data->variant_id);
                    $mail_data['products'][$key] = $lims_product_data->name . ' [' . $variant_data->name .']';
                }
                else
                    $mail_data['products'][$key] = $lims_product_data->name;

                if($product_return_data->sale_unit_id){
                    $lims_unit_data = Unit::find($product_return_data->sale_unit_id);
                    $mail_data['unit'][$key] = $lims_unit_data->unit_code;
                }
                else
                    $mail_data['unit'][$key] = '';

                $mail_data['qty'][$key] = $product_return_data->qty;
                $mail_data['total'][$key] = $product_return_data->qty;
            }
            $this->setMailInfo($mail_setting);
            try{
                Mail::to($mail_data['email'])->send(new ReturnDetails($mail_data));
                $message = 'Mail sent successfully';
            }
            catch(\Exception $e){
                $message = 'Please setup your <a href="setting/mail_setting">mail setting</a> to send mail.';
            }
        }


        return redirect()->back()->with('message', $message);
    }

    public function productReturnData($id)
    {
        $lims_product_return_data = ProductReturn::where('return_id', $id)->get();
        foreach ($lims_product_return_data as $key => $product_return_data) {
            $product = Product::find($product_return_data->product_id);
            if($product_return_data->sale_unit_id != 0){
                $unit_data = Unit::find($product_return_data->sale_unit_id);
                $unit = $unit_data->unit_code;
            }
            else
                $unit = '';
            if($product_return_data->variant_id) {
                $lims_product_variant_data = ProductVariant::select('item_code')->FindExactProduct($product_return_data->product_id, $product_return_data->variant_id)->first();
                $product->code = $lims_product_variant_data->item_code;
            }
            if($product_return_data->product_batch_id) {
                $product_batch_data = ProductBatch::select('batch_no')->find($product_return_data->product_batch_id);
                $product_return[7][$key] = $product_batch_data->batch_no;
            }
            else
                $product_return[7][$key] = 'N/A';
            $product_return[0][$key] = $product->name . ' [' . $product->code . ']';
            if($product_return_data->imei_number)
                $product_return[0][$key] .= '<br>IMEI or Serial Number: ' . $product_return_data->imei_number;
            $product_return[1][$key] = $product_return_data->qty;
            $product_return[2][$key] = $unit;
            $product_return[3][$key] = $product_return_data->tax;
            $product_return[4][$key] = $product_return_data->tax_rate;
            $product_return[5][$key] = $product_return_data->discount;
            $product_return[6][$key] = $product_return_data->total;
        }
        return $product_return;
    }

    public function edit($id)
    {
        $role = Role::find(Auth::user()->role_id);
        if($role->hasPermissionTo('returns-edit')){
            $lims_customer_list = Customer::where('is_active',true)->get();
            $lims_warehouse_list = Warehouse::where('is_active',true)->get();
            $lims_biller_list = Biller::where('is_active',true)->get();
            $lims_tax_list = Tax::where('is_active',true)->get();
            $lims_return_data = Returns::find($id);
            $lims_product_return_data = ProductReturn::where('return_id', $id)->get();
            return view('backend.return.edit',compact('lims_customer_list', 'lims_warehouse_list', 'lims_biller_list', 'lims_tax_list', 'lims_return_data','lims_product_return_data'));
        }
        else
            return redirect()->back()->with('not_permitted', 'Sorry! You are not allowed to access this module');
    }

    public function update(Request $request, $id)
    {
        $data = $request->except('document');
        //return dd($data);
        $document = $request->document;
        $lims_return_data = Returns::find($id);

        if ($document) {
            $v = Validator::make(
                [
                    'extension' => strtolower($request->document->getClientOriginalExtension()),
                ],
                [
                    'extension' => 'in:jpg,jpeg,png,gif,pdf,csv,docx,xlsx,txt',
                ]
            );
            if ($v->fails())
                return redirect()->back()->withErrors($v->errors());

            $this->fileDelete('documents/sale_return/', $lims_return_data->document);

            $ext = pathinfo($document->getClientOriginalName(), PATHINFO_EXTENSION);
            $documentName = date("Ymdhis");
            if(!config('database.connections.saleprosaas_landlord')) {
                $documentName = $documentName . '.' . $ext;
                $document->move('public/documents/sale_return', $documentName);
            }
            else {
                $documentName = $this->getTenantId() . '_' . $documentName . '.' . $ext;
                $document->move('public/documents/sale_return', $documentName);
            }
            $data['document'] = $documentName;
        }

        $lims_product_return_data = ProductReturn::where('return_id', $id)->get();

        $product_id = $data['product_id'];
        $imei_number = $data['imei_number'];
        $product_batch_id = $data['product_batch_id'];
        $product_code = $data['product_code'];
        $product_variant_id = $data['product_variant_id'];
        $qty = $data['qty'];
        $sale_unit = $data['sale_unit'];
        $net_unit_price = $data['net_unit_price'];
        $discount = $data['discount'];
        $tax_rate = $data['tax_rate'];
        $tax = $data['tax'];
        $total = $data['subtotal'];

        foreach ($lims_product_return_data as $key => $product_return_data) {
            $old_product_id[] = $product_return_data->product_id;
            $old_product_variant_id[] = null;
            $lims_product_data = Product::find($product_return_data->product_id);
            if($lims_product_data->type == 'combo') {
                $product_list = explode(",", $lims_product_data->product_list);
                $variant_list = explode(",", $lims_product_data->variant_list);
                $qty_list = explode(",", $lims_product_data->qty_list);

                foreach ($product_list as $index=>$child_id) {
                    $child_data = Product::find($child_id);
                    if($variant_list[$index]) {
                        $child_product_variant_data = ProductVariant::where([
                            ['product_id', $child_id],
                            ['variant_id', $variant_list[$index]]
                        ])->first();

                        $child_warehouse_data = Product_Warehouse::where([
                            ['product_id', $child_id],
                            ['variant_id', $variant_list[$index]],
                            ['warehouse_id', $lims_return_data->warehouse_id ],
                        ])->first();

                        $child_product_variant_data->qty -= $qty[$key] * $qty_list[$index];
                        $child_product_variant_data->save();
                    }
                    else {
                        $child_warehouse_data = Product_Warehouse::where([
                            ['product_id', $child_id],
                            ['warehouse_id', $lims_return_data->warehouse_id ],
                        ])->first();
                    }

                    $child_data->qty -= $product_return_data->qty * $qty_list[$index];
                    $child_warehouse_data->qty -= $product_return_data->qty * $qty_list[$index];

                    $child_data->save();
                    $child_warehouse_data->save();
                }
            }
            elseif($product_return_data->sale_unit_id != 0) {
                $lims_sale_unit_data = Unit::find($product_return_data->sale_unit_id);
                if ($lims_sale_unit_data->operator == '*')
                    $quantity = $product_return_data->qty * $lims_sale_unit_data->operation_value;
                elseif($lims_sale_unit_data->operator == '/')
                    $quantity = $product_return_data->qty / $lims_sale_unit_data->operation_value;

                if($product_return_data->variant_id) {
                    $lims_product_variant_data = ProductVariant::select('id', 'qty')->FindExactProduct($product_return_data->product_id, $product_return_data->variant_id)->first();
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithVariant($product_return_data->product_id, $product_return_data->variant_id, $lims_return_data->warehouse_id)
                    ->first();
                    $old_product_variant_id[$key] = $lims_product_variant_data->id;
                    $lims_product_variant_data->qty -= $quantity;
                    $lims_product_variant_data->save();
                }
                elseif($product_return_data->product_batch_id) {
                    $lims_product_warehouse_data = Product_Warehouse::where([
                        ['product_id', $product_return_data->product_id],
                        ['product_batch_id', $product_return_data->product_batch_id],
                        ['warehouse_id', $lims_return_data->warehouse_id]
                    ])->first();

                    $product_batch_data = ProductBatch::find($product_return_data->product_batch_id);
                    $product_batch_data->qty -= $quantity;
                    $product_batch_data->save();
                }
                else
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithoutVariant($product_return_data->product_id, $lims_return_data->warehouse_id)
                    ->first();

                $lims_product_data->qty -= $quantity;
                $lims_product_warehouse_data->qty -= $quantity;
                $lims_product_data->save();
                $lims_product_warehouse_data->save();
            }
            //deduct imei number if available
            if($product_return_data->imei_number) {
                $imei_numbers = explode(",", $product_return_data->imei_number);
                $all_imei_numbers = explode(",", $lims_product_warehouse_data->imei_number);
                foreach ($imei_numbers as $number) {
                    if (($j = array_search($number, $all_imei_numbers)) !== false) {
                        unset($all_imei_numbers[$j]);
                    }
                }
                $lims_product_warehouse_data->imei_number = implode(",", $all_imei_numbers);
                $lims_product_warehouse_data->save();
            }
            if($product_return_data->variant_id && !(in_array($old_product_variant_id[$key], $product_variant_id)) ){
                $product_return_data->delete();
            }
            elseif( !(in_array($old_product_id[$key], $product_id)) )
                $product_return_data->delete();
        }
        foreach ($product_id as $key => $pro_id) {
            $lims_product_data = Product::find($pro_id);
            $product_return['variant_id'] = null;
            if($sale_unit[$key] != 'n/a') {
                $lims_sale_unit_data = Unit::where('unit_name', $sale_unit[$key])->first();
                $sale_unit_id = $lims_sale_unit_data->id;
                if ($lims_sale_unit_data->operator == '*')
                    $quantity = $qty[$key] * $lims_sale_unit_data->operation_value;
                elseif($lims_sale_unit_data->operator == '/')
                    $quantity = $qty[$key] / $lims_sale_unit_data->operation_value;

                if($lims_product_data->is_variant) {
                    $lims_product_variant_data = ProductVariant::select('id', 'variant_id', 'qty')->FindExactProductWithCode($pro_id, $product_code[$key])->first();
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithVariant($pro_id, $lims_product_variant_data->variant_id, $data['warehouse_id'])
                    ->first();
                    $variant_data = Variant::find($lims_product_variant_data->variant_id);

                    $product_return['variant_id'] = $lims_product_variant_data->variant_id;
                    $lims_product_variant_data->qty += $quantity;
                    $lims_product_variant_data->save();
                }
                elseif($product_batch_id[$key]) {
                    $lims_product_warehouse_data = Product_Warehouse::where([
                        ['product_id', $pro_id],
                        ['product_batch_id', $product_batch_id[$key] ],
                        ['warehouse_id', $data['warehouse_id'] ]
                    ])->first();

                    $product_batch_data = ProductBatch::find($product_batch_id[$key]);
                    $product_batch_data->qty += $quantity;
                    $product_batch_data->save();
                }
                else {
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithoutVariant($pro_id, $data['warehouse_id'])
                    ->first();
                }

                $lims_product_data->qty +=  $quantity;
                $lims_product_warehouse_data->qty += $quantity;

                $lims_product_data->save();
                $lims_product_warehouse_data->save();
            }
            else {
                if($lims_product_data->type == 'combo'){
                    $product_list = explode(",", $lims_product_data->product_list);
                    $variant_list = explode(",", $lims_product_data->variant_list);
                    $qty_list = explode(",", $lims_product_data->qty_list);

                    foreach ($product_list as $index=>$child_id) {
                        $child_data = Product::find($child_id);
                        if($variant_list[$index]) {
                            $child_product_variant_data = ProductVariant::where([
                                ['product_id', $child_id],
                                ['variant_id', $variant_list[$index]]
                            ])->first();

                            $child_warehouse_data = Product_Warehouse::where([
                                ['product_id', $child_id],
                                ['variant_id', $variant_list[$index]],
                                ['warehouse_id', $data['warehouse_id'] ],
                            ])->first();

                            $child_product_variant_data->qty += $qty[$key] * $qty_list[$index];
                            $child_product_variant_data->save();
                        }
                        else {
                            $child_warehouse_data = Product_Warehouse::where([
                                ['product_id', $child_id],
                                ['warehouse_id', $data['warehouse_id'] ],
                            ])->first();
                        }

                        $child_data->qty += $qty[$key] * $qty_list[$index];
                        $child_warehouse_data->qty += $qty[$key] * $qty_list[$index];

                        $child_data->save();
                        $child_warehouse_data->save();
                    }
                }
                $sale_unit_id = 0;
            }

            //add imei number if available
            if($imei_number[$key]) {
                if($lims_product_warehouse_data->imei_number)
                    $lims_product_warehouse_data->imei_number .= ',' . $imei_number[$key];
                 else
                    $lims_product_warehouse_data->imei_number = $imei_number[$key];
                $lims_product_warehouse_data->save();
            }

            if($lims_product_data->is_variant)
                $mail_data['products'][$key] = $lims_product_data->name . ' [' . $variant_data->name .']';
            else
                $mail_data['products'][$key] = $lims_product_data->name;

            if($sale_unit_id)
                $mail_data['unit'][$key] = $lims_sale_unit_data->unit_code;
            else
                $mail_data['unit'][$key] = '';

            $mail_data['qty'][$key] = $qty[$key];
            $mail_data['total'][$key] = $total[$key];

            $product_return['return_id'] = $id ;
            $product_return['product_id'] = $pro_id;
            $product_return['imei_number'] = $imei_number[$key];
            $product_return['product_batch_id'] = $product_batch_id[$key];
            $product_return['qty'] = $qty[$key];
            $product_return['sale_unit_id'] = $sale_unit_id;
            $product_return['net_unit_price'] = $net_unit_price[$key];
            $product_return['discount'] = $discount[$key];
            $product_return['tax_rate'] = $tax_rate[$key];
            $product_return['tax'] = $tax[$key];
            $product_return['total'] = $total[$key];

            if($product_return['variant_id'] && in_array($product_variant_id[$key], $old_product_variant_id)) {
                ProductReturn::where([
                    ['product_id', $pro_id],
                    ['variant_id', $product_return['variant_id']],
                    ['return_id', $id]
                ])->update($product_return);
            }
            elseif( $product_return['variant_id'] === null && (in_array($pro_id, $old_product_id)) ) {
                ProductReturn::where([
                    ['return_id', $id],
                    ['product_id', $pro_id]
                    ])->update($product_return);
            }
            else
                ProductReturn::create($product_return);
        }
        $lims_return_data->update($data);
        $lims_customer_data = Customer::find($data['customer_id']);
        $mail_setting = MailSetting::latest()->first();


        if(!$lims_customer_data->email && !$mail_setting) {
            $message = 'Return updated successfully. Please setup your <a href="setting/mail_setting">mail setting</a> to send mail.';
        }else{
            //collecting male data
            $mail_data['email'] = $lims_customer_data->email;
            $mail_data['reference_no'] = $lims_return_data->reference_no;
            $mail_data['total_qty'] = $lims_return_data->total_qty;
            $mail_data['total_price'] = $lims_return_data->total_price;
            $mail_data['order_tax'] = $lims_return_data->order_tax;
            $mail_data['order_tax_rate'] = $lims_return_data->order_tax_rate;
            $mail_data['grand_total'] = $lims_return_data->grand_total;
            $message = 'Return updated successfully';
            try{
                $this->setMailInfo($mail_setting);
                Mail::to($mail_data['email'])->send(new ReturnDetails($mail_data));
            }
            catch(\Exception $e){
                $message = $e->getMessage();
            }
        }
        return redirect('return-sale')->with('message', $message);
    }

    public function deleteBySelection(Request $request)
    {
        $return_id = $request['returnIdArray'];
        foreach ($return_id as $id) {
            $lims_return_data = Returns::find($id);
            $lims_product_return_data = ProductReturn::where('return_id', $id)->get();

            foreach ($lims_product_return_data as $key => $product_return_data) {
                $lims_product_data = Product::find($product_return_data->product_id);
                if( $lims_product_data->type == 'combo' ){
                    $product_list = explode(",", $lims_product_data->product_list);
                    $variant_list = explode(",", $lims_product_data->variant_list);
                    $qty_list = explode(",", $lims_product_data->qty_list);

                    foreach ($product_list as $index => $child_id) {
                        $child_data = Product::find($child_id);
                        if($variant_list[$index]) {
                            $child_product_variant_data = ProductVariant::where([
                                ['product_id', $child_id],
                                ['variant_id', $variant_list[$index]]
                            ])->first();

                            $child_warehouse_data = Product_Warehouse::where([
                                ['product_id', $child_id],
                                ['variant_id', $variant_list[$index]],
                                ['warehouse_id', $lims_return_data->warehouse_id ],
                            ])->first();

                            $child_product_variant_data->qty -= $product_return_data->qty * $qty_list[$index];
                            $child_product_variant_data->save();
                        }
                        else {
                            $child_warehouse_data = Product_Warehouse::where([
                                ['product_id', $child_id],
                                ['warehouse_id', $lims_return_data->warehouse_id ],
                            ])->first();
                        }

                        $child_data->qty -= $product_return_data->qty * $qty_list[$index];
                        $child_warehouse_data->qty -= $product_return_data->qty * $qty_list[$index];

                        $child_data->save();
                        $child_warehouse_data->save();
                    }
                }
                elseif($product_return_data->sale_unit_id != 0){
                    $lims_sale_unit_data = Unit::find($product_return_data->sale_unit_id);

                    if ($lims_sale_unit_data->operator == '*')
                        $quantity = $product_return_data->qty * $lims_sale_unit_data->operation_value;
                    elseif($lims_sale_unit_data->operator == '/')
                        $quantity = $product_return_data->qty / $lims_sale_unit_data->operation_value;
                    if($product_return_data->variant_id) {
                        $lims_product_variant_data = ProductVariant::select('id', 'qty')->FindExactProduct($product_return_data->product_id, $product_return_data->variant_id)->first();
                        $lims_product_warehouse_data = Product_Warehouse::FindProductWithVariant($product_return_data->product_id, $product_return_data->variant_id, $lims_return_data->warehouse_id)->first();
                        $lims_product_variant_data->qty -= $quantity;
                        $lims_product_variant_data->save();
                    }
                    elseif($product_return_data->product_batch_id) {
                        $lims_product_batch_data = ProductBatch::find($product_return_data->product_batch_id);
                        $lims_product_warehouse_data = Product_Warehouse::where([
                            ['product_batch_id', $product_return_data->product_batch_id],
                            ['warehouse_id', $lims_return_data->warehouse_id]
                        ])->first();

                        $lims_product_batch_data->qty -= $product_return_data->qty;
                        $lims_product_batch_data->save();
                    }
                    else
                        $lims_product_warehouse_data = Product_Warehouse::FindProductWithoutVariant($product_return_data->product_id, $lims_return_data->warehouse_id)->first();

                    $lims_product_data->qty -= $quantity;
                    $lims_product_warehouse_data->qty -= $quantity;
                    $lims_product_data->save();
                    $lims_product_warehouse_data->save();
                    if($lims_return_data->sale_id) {
                        $product_sale_data = Product_Sale::where([
                            ['sale_id', $lims_return_data->sale_id],
                            ['product_id', $product_return_data->product_id]
                        ])->select('id', 'return_qty')->first();
                        $product_sale_data->return_qty -= $product_return_data->qty;
                        $product_sale_data->save();
                    }
                    $product_return_data->delete();
                }
            }
            $lims_return_data->delete();
            $this->fileDelete('documents/sale_return/', $lims_return_data->document);

        }
        return 'Return deleted successfully!';
    }

    public function destroy($id)
    {
        $lims_return_data = Returns::find($id);
        $lims_product_return_data = ProductReturn::where('return_id', $id)->get();

        foreach ($lims_product_return_data as $key => $product_return_data) {
            $lims_product_data = Product::find($product_return_data->product_id);
            if( $lims_product_data->type == 'combo' ){
                $product_list = explode(",", $lims_product_data->product_list);
                $variant_list = explode(",", $lims_product_data->variant_list);
                $qty_list = explode(",", $lims_product_data->qty_list);

                foreach ($product_list as $index => $child_id) {
                    $child_data = Product::find($child_id);
                    if($variant_list[$index]) {
                        $child_product_variant_data = ProductVariant::where([
                            ['product_id', $child_id],
                            ['variant_id', $variant_list[$index]]
                        ])->first();

                        $child_warehouse_data = Product_Warehouse::where([
                            ['product_id', $child_id],
                            ['variant_id', $variant_list[$index]],
                            ['warehouse_id', $lims_return_data->warehouse_id ],
                        ])->first();

                        $child_product_variant_data->qty -= $product_return_data->qty * $qty_list[$index];
                        $child_product_variant_data->save();
                    }
                    else {
                        $child_warehouse_data = Product_Warehouse::where([
                            ['product_id', $child_id],
                            ['warehouse_id', $lims_return_data->warehouse_id ],
                        ])->first();
                    }

                    $child_data->qty -= $product_return_data->qty * $qty_list[$index];
                    $child_warehouse_data->qty -= $product_return_data->qty * $qty_list[$index];

                    $child_data->save();
                    $child_warehouse_data->save();
                }
            }
            elseif($product_return_data->sale_unit_id != 0){
                $lims_sale_unit_data = Unit::find($product_return_data->sale_unit_id);

                if ($lims_sale_unit_data->operator == '*')
                    $quantity = $product_return_data->qty * $lims_sale_unit_data->operation_value;
                elseif($lims_sale_unit_data->operator == '/')
                    $quantity = $product_return_data->qty / $lims_sale_unit_data->operation_value;

                if($product_return_data->variant_id) {
                    $lims_product_variant_data = ProductVariant::select('id', 'qty')->FindExactProduct($product_return_data->product_id, $product_return_data->variant_id)->first();
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithVariant($product_return_data->product_id, $product_return_data->variant_id, $lims_return_data->warehouse_id)->first();
                    $lims_product_variant_data->qty -= $quantity;
                    $lims_product_variant_data->save();
                }
                elseif($product_return_data->product_batch_id) {
                    $lims_product_batch_data = ProductBatch::find($product_return_data->product_batch_id);
                    $lims_product_warehouse_data = Product_Warehouse::where([
                        ['product_batch_id', $product_return_data->product_batch_id],
                        ['warehouse_id', $lims_return_data->warehouse_id]
                    ])->first();

                    $lims_product_batch_data->qty -= $product_return_data->qty;
                    $lims_product_batch_data->save();
                }
                else
                    $lims_product_warehouse_data = Product_Warehouse::FindProductWithoutVariant($product_return_data->product_id, $lims_return_data->warehouse_id)->first();

                $lims_product_data->qty -= $quantity;
                $lims_product_warehouse_data->qty -= $quantity;
                $lims_product_data->save();
                $lims_product_warehouse_data->save();
            }
            //deduct imei number if available
            if($product_return_data->imei_number) {
                $imei_numbers = explode(",", $product_return_data->imei_number);
                $all_imei_numbers = explode(",", $lims_product_warehouse_data->imei_number);
                foreach ($imei_numbers as $number) {
                    if (($j = array_search($number, $all_imei_numbers)) !== false) {
                        unset($all_imei_numbers[$j]);
                    }
                }
                $lims_product_warehouse_data->imei_number = implode(",", $all_imei_numbers);
                $lims_product_warehouse_data->save();
            }
            if($lims_return_data->sale_id) {
                $product_sale_data = Product_Sale::where([
                    ['sale_id', $lims_return_data->sale_id],
                    ['product_id', $product_return_data->product_id]
                ])->select('id', 'return_qty')->first();
                $product_sale_data->return_qty -= $product_return_data->qty;
                $product_sale_data->save();
            }
            $product_return_data->delete();
        }
        if($lims_return_data->sale_id) {
            Sale::find($lims_return_data->sale_id)->update(['sale_status' => 1]);
        }
        $lims_return_data->delete();
        $this->fileDelete('documents/sale_return/', $lims_return_data->document);

        return redirect('return-sale')->with('not_permitted', 'Data deleted successfully');;
    }
}