pds/app/Filament/Imports/ItemImporter.php

<?php

namespace App\Filament\Imports;

use App\Models\Item;
use App\Models\Plant;
use Filament\Actions\Imports\Exceptions\RowImportFailedException;
use Filament\Actions\Imports\ImportColumn;
use Filament\Actions\Imports\Importer;
use Filament\Actions\Imports\Models\Import;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Str;

class ItemImporter extends Importer
{
    protected static ?string $model = Item::class;

    public static function getColumns(): array
    {
        return [
            ImportColumn::make('category')
                ->requiredMapping()
                ->exampleHeader('Category')
                ->example('Submersible Motor')
                ->label('Category'),
            ImportColumn::make('code')
                ->requiredMapping()
                ->exampleHeader('Item Code')
                ->example('123456')
                ->label('Item Code')
                ->rules(['required']),
            ImportColumn::make('description')
                ->requiredMapping()
                ->exampleHeader('Description')
                ->example('Testing Model Description 1')
                ->label('Description')
                ->rules(['required']),
            ImportColumn::make('hourly_quantity')
                ->requiredMapping()
                ->exampleHeader('Hourly Quantity')
                ->example('25')
                ->label('Hourly Quantity')
                ->numeric()
                ->rules(['required', 'integer']),
            ImportColumn::make('uom')
                ->requiredMapping()
                ->exampleHeader('Unit of Measure')
                ->example('EA')
                ->label('Unit of Measure'),
            ImportColumn::make('plant')
                ->requiredMapping()
                ->exampleHeader('Plant Code')
                ->example('1000')
                ->label('Plant Code')
                ->relationship(resolveUsing: 'code')   // Lookup Plant by code column
                ->rules(['required']),
        ];
    }

    public function resolveRecord(): ?Item
    {
        $warnMsg = [];
        $plantCod = $this->data['plant'];
        $plant = null;
        Log::info('ResolveRecord triggered', $this->data);
        $iCode = trim($this->data['code']);
        $description = trim($this->data['description']);

        if (Str::length($plantCod) < 4 || ! is_numeric($plantCod) || ! preg_match('/^[1-9]\d{3,}$/', $plantCod)) {
            $warnMsg[] = 'Invalid plant code found';
        } else {
            $plant = Plant::where('code', $plantCod)->first();
            if (! $plant) {
                $warnMsg[] = 'Plant not found'; // '" . $plantCod . "'
            }
        }

        if (Str::length($iCode) < 6 || ! ctype_alnum($iCode)) {
            $warnMsg[] = 'Invalid item code found';
        }
        // if (Str::length($this->data['uom']) <= 0) {
        //     $warnMsg[] = "Invalid unit of measure found";
        // }
        if (Str::length($description) < 5) {
            $warnMsg[] = 'Invalid description found';
        }
        if (Str::length($this->data['hourly_quantity']) < 0 || ! is_numeric($this->data['hourly_quantity']) || $this->data['hourly_quantity'] <= 0) {
            $warnMsg[] = 'Invalid hourly quantity found';
        }
        if (! empty($warnMsg)) {
            throw new RowImportFailedException(implode(', ', $warnMsg));
        }

        return Item::updateOrCreate([
            'code' => $iCode,
            'plant_id' => $plant->id,
        ],
            [
                'category' => trim($this->data['category']),
                'description' => $description,
                'hourly_quantity' => $this->data['hourly_quantity'],
                'uom' => trim($this->data['uom']),
            ]
        );
        // return new Item;
    }

    public static function getCompletedNotificationBody(Import $import): string
    {
        $body = 'Your item import has completed and '.number_format($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;
    }
}