Added sticker prinitng import and export file

app/Filament/Imports/StickerPrintingImporter.php

@@ -0,0 +1,106 @@
+<?php
+
+namespace App\Filament\Imports;
+
+use App\Models\StickerPrinting;
+use Filament\Actions\Imports\ImportColumn;
+use Filament\Actions\Imports\Importer;
+use Filament\Actions\Imports\Models\Import;
+use Filament\Actions\Imports\Exceptions\RowImportFailedException;
+use App\Models\Plant;
+use App\Models\User;
+use Str;
+use Filament\Facades\Filament;
+
+class StickerPrintingImporter extends Importer
+{
+    protected static ?string $model = StickerPrinting::class;
+
+    public static function getColumns(): array
+    {
+        return [
+            ImportColumn::make('plant')
+                ->requiredMapping()
+                ->exampleHeader('PLANT CODE')
+                ->example('1000')
+                ->label('PLANT CODE')
+                ->relationship(resolveUsing: 'code')
+                ->rules(['required']),
+            ImportColumn::make('reference_number')
+                ->exampleHeader('REFERENCE NUMBER')
+                ->example('REF123456')
+                ->label('REFERENCE NUMBER'),
+            ImportColumn::make('serial_number')
+                ->exampleHeader('SERIAL NUMBER')
+                ->example('135245325212')
+                ->label('SERIAL NUMBER'),
+            // ImportColumn::make('created_by')
+            //     ->exampleHeader('CREATED BY')
+            //     ->example('RAW01234')
+            //     ->label('CREATED BY'),
+        ];
+    }
+
+    public function resolveRecord(): ?StickerPrinting
+    {
+        // return StickerPrinting::firstOrNew([
+        //     // Update existing records, matching them by `$this->data['column_name']`
+        //     'email' => $this->data['email'],
+        // ]);
+
+        $warnMsg = [];
+        $plant = Plant::where('code', $this->data['plant'])->first();
+
+        if (Str::length($this->data['serial_number']) < 9 || !ctype_alnum($this->data['serial_number'])) {
+            $warnMsg[] = "Invalid serial number found";
+        }
+
+        $existing = StickerPrinting::where('plant_id', $plant->id)
+            ->where('serial_number', $this->data['serial_number'])
+            ->first();
+
+        if ($existing) {
+            $warnMsg[] = "Serial number already exists for this plant!";//throw new RowImportFailedException("Serial number already exists for this plant!");
+        }
+
+        $serial = $this->data['serial_number'];
+
+        // --- Check duplicate in DB ---
+        $existsInDB = StickerPrinting::where('plant_id', $plant->id)
+            ->where('serial_number', $serial)
+            ->first();
+
+        if ($existsInDB) {
+            //throw new RowImportFailedException("Serial number '{$serial}' already exists in DB for this plant!");
+            $warnMsg[] = "Serial number '{$serial}' already exists in DB for this plant!";
+        }
+
+        if (!empty($warnMsg)) {
+            throw new RowImportFailedException(implode(', ', $warnMsg));
+        }
+
+        StickerPrinting::Create([
+            'plant_id' => $plant->id,
+            'reference_number' => $this->data['reference_number'],
+            'serial_number' => $this->data['serial_number'],
+            'created_at' => now(),
+            'updated_at' =>now(),
+            'created_by' => Filament::auth()->user()?->name,
+        ]);
+
+        return null;
+
+        //return new StickerPrinting();
+    }
+
+    public static function getCompletedNotificationBody(Import $import): string
+    {
+        $body = 'Your sticker printing import has completed and ' . number_format($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;
+    }
+}