<?php

namespace App\Imports;

use App\Models\Product;
use App\Models\AttributeValue;


use Illuminate\Support\Facades\DB;

use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Log;
use Maatwebsite\Excel\Concerns\SkipsEmptyRows;
use Maatwebsite\Excel\Concerns\ToCollection;
use Maatwebsite\Excel\Concerns\WithChunkReading;
use Maatwebsite\Excel\Concerns\WithHeadingRow;
use Maatwebsite\Excel\Concerns\WithValidation;
use Maatwebsite\Excel\Imports\HeadingRowFormatter;


HeadingRowFormatter::default('none');

class AttributeGroupImport implements
    SkipsEmptyRows,
    ToCollection,
    WithHeadingRow,
    WithValidation,
    WithChunkReading
{
    public function collection(Collection $rows)
    {
        foreach ($rows as $row) {
            try {
                $data = $this->mapRow($row);
  

                if (empty($data['excel_name'])) {
                    continue;
                }

                $product = Product::where('name', 'like', "%{$data['excel_name']}%")->first();
               
                if (!$product) {
                    continue;
                }
                
                
                $values = array_filter([
                    1 => trim($data['val1'] ?? ''),
                    2 => trim($data['val2'] ?? ''),
                    3 => trim($data['val3'] ?? ''),
                    4 => trim($data['val4'] ?? ''),
                    5 => trim($data['val5'] ?? ''),
                    // 6 => trim($data['val6'] ?? ''),
                    // 7 => trim($data['val7'] ?? ''),
                    // 8 => trim($data['val8'] ?? ''),
                ], fn ($val) => $val !== '');
                                      
       

                
                $AttributeValue_val1 = optional(
                        AttributeValue::where('attribute_id',1)
                            ->where('value->fa', $values[1] ?? null)
                            ->first()
                    )->id ?? null;
                    
                    $AttributeValue_val2 = optional(
                        AttributeValue::where('attribute_id',2)
                            ->where('value->fa', $values[2] ?? null)
                            ->first()
                    )->id ?? null;
                    
                    $AttributeValue_val3 = optional(
                        AttributeValue::where('attribute_id',3)
                            ->where('value->fa', $values[3] ?? null)
                            ->first()
                    )->id ?? null;
                    
                    $AttributeValue_val4 = optional(
                        AttributeValue::where('attribute_id',4)
                            ->where('value->fa', $values[4] ?? null)
                            ->first()
                    )->id ?? null;
                    
                    $AttributeValue_val5 = optional(
                        AttributeValue::where('attribute_id',5)
                            ->where('value->fa', $values[5] ?? null)
                            ->first()
                    )->id ?? null;
                    
                    // $AttributeValue_val6 = optional(
                    //     AttributeValue::where('attribute_id',6)
                    //         ->where('value->fa', $values[6] ?? null)
                    //         ->first()
                    // )->id ?? null;
                    
                    // $AttributeValue_val7 = optional(
                    //     AttributeValue::where('attribute_id',7)
                    //         ->where('value->fa', $values[7] ?? null)
                    //         ->first()
                    // )->id ?? null;
                    
                    // $AttributeValue_val8 = optional(
                    //     AttributeValue::where('attribute_id',8)
                    //         ->where('value->fa', $values[8] ?? null)
                    //         ->first()
                    // )->id ?? null;
                
               $selectedAttributes = [
                    1 => $AttributeValue_val1,
                    2 => $AttributeValue_val2,
                    3 => $AttributeValue_val3,
                    4 => $AttributeValue_val4,
                    5 => $AttributeValue_val5,
                    // 6 => $AttributeValue_val6,
                    // 7 => $AttributeValue_val7,
                    // 8 => $AttributeValue_val8,
                ];
                               
                
            
                
 
                $attributes_data = [];
                foreach ($selectedAttributes as $attribute => $value) {
                    if ($value) {
                        $attributes_data[] = [
                            'product_id' => $product->id,
                            'attribute_id' => $attribute,
                            'value_id' => $value,
                        ];
                    }
                }
 
                // dd($attributes_data);
                
                if (count($attributes_data)) {
                    DB::table('attribute_product')->insert($attributes_data);
                }
                
             
                
          
           
            } catch (\Throwable $e) {
                Log::error('attribute Import Error', [
                    'message' => $e->getMessage(),
                    'row' => $row->toArray(),
                ]);
            }
        }
    }

       private function mapRow($row): array
    {
        return [
            'excel_name' => $this->clean($row['نام'] ?? ''),
            'val1' => $this->clean($row['سایر'] ?? ''),
            'val2' => $this->clean($row['رنگ'] ?? ''),
            'val3' => $this->clean($row['برند'] ?? ''),
            'val4' => $this->clean($row['فرم صفحه'] ?? ''),
            'val5' => $this->clean($row['جنس'] ?? ''),
        ];
    }
    
        private function clean($value)
    {
        return trim(str_replace("\u{00A0}", ' ', $value));
    }   

    public function rules(): array
    {
        return [
            'نام' => ['required'],
            'سایر' => ['nullable'],
            'رنگ' => ['nullable'],
            'برند' => ['nullable'],
            'فرم صفحه'  => ['nullable'],
            'جنس'   => ['nullable'],
        ];
    }

    public function chunkSize(): int
    {
        return 2000;
    }
}