Added production characteristic importer and exporter file

app/Filament/Imports/ProductionCharacteristicImporter.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace App\Filament\Imports;
+
+use App\Models\ProductionCharacteristic;
+use Filament\Actions\Imports\ImportColumn;
+use Filament\Actions\Imports\Importer;
+use Filament\Actions\Imports\Models\Import;
+
+class ProductionCharacteristicImporter extends Importer
+{
+    protected static ?string $model = ProductionCharacteristic::class;
+
+    public static function getColumns(): array
+    {
+        return [
+            ImportColumn::make('plant')
+                ->requiredMapping()
+                ->relationship()
+                ->rules(['required']),
+            ImportColumn::make('line')
+                ->requiredMapping()
+                ->relationship()
+                ->rules(['required']),
+            ImportColumn::make('item')
+                ->requiredMapping()
+                ->relationship()
+                ->rules(['required']),
+            ImportColumn::make('machine')
+                ->requiredMapping()
+                ->relationship()
+                ->rules(['required']),
+            ImportColumn::make('production_order'),
+            ImportColumn::make('serial_number'),
+            ImportColumn::make('characteristic_name'),
+            ImportColumn::make('observed_value'),
+            ImportColumn::make('status'),
+            ImportColumn::make('inspection_status'),
+            ImportColumn::make('remark'),
+            ImportColumn::make('created_by'),
+            ImportColumn::make('updated_by'),
+        ];
+    }
+
+    public function resolveRecord(): ?ProductionCharacteristic
+    {
+        // return ProductionCharacteristic::firstOrNew([
+        //     // Update existing records, matching them by `$this->data['column_name']`
+        //     'email' => $this->data['email'],
+        // ]);
+
+        return new ProductionCharacteristic();
+    }
+
+    public static function getCompletedNotificationBody(Import $import): string
+    {
+        $body = 'Your production characteristic import has completed and ' . number_format($import->successful_rows) . ' ' . str('row')->plural($import->successful_rows) . ' imported.';
+
+        if ($failedRowsCount = $import->getFailedRowsCount()) {
+            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to import.';
+        }
+
+        return $body;
+    }
+}