Added exporter file

app/Filament/Exports/LeakTestReadingExporter.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace App\Filament\Exports;
+
+use App\Models\LeakTestReading;
+use Filament\Actions\Exports\ExportColumn;
+use Filament\Actions\Exports\Exporter;
+use Filament\Actions\Exports\Models\Export;
+
+class LeakTestReadingExporter extends Exporter
+{
+    protected static ?string $model = LeakTestReading::class;
+
+    public static function getColumns(): array
+    {
+        static $rowNumber = 0;
+
+        return [
+            ExportColumn::make('no')
+                ->label('NO')
+                ->state(function ($record) use (&$rowNumber) {
+                    // Increment and return the row number
+                    return ++$rowNumber;
+                }),
+            ExportColumn::make('plant.code')
+                ->label('PLANT CODE'),
+            ExportColumn::make('item_code')
+                ->label('ITEM CODE'),
+            ExportColumn::make('serial_number')
+                ->label('SERIAL NUMBER'),
+            ExportColumn::make('test_status')
+                ->label('TEST STATUS')
+                ->formatStateUsing(function ($state) {
+                    if (! $state || $state == '' || $state == null) {
+                        return '-';
+                    }
+
+                    return match ($state) {
+                        'P' => 'PASS',
+                        'F' => 'FAIL',
+                        default => '-',
+                    };
+                }),
+            ExportColumn::make('created_at')
+                ->label('CREATED AT'),
+            ExportColumn::make('updated_at')
+                ->label('UPDATED AT'),
+            ExportColumn::make('deleted_at')
+                ->enabledByDefault(false)
+                ->label('DELETED AT'),
+        ];
+    }
+
+    public static function getCompletedNotificationBody(Export $export): string
+    {
+        $body = 'Your leak test reading export has completed and '.number_format($export->successful_rows).' '.str('row')->plural($export->successful_rows).' exported.';
+
+        if ($failedRowsCount = $export->getFailedRowsCount()) {
+            $body .= ' '.number_format($failedRowsCount).' '.str('row')->plural($failedRowsCount).' failed to export.';
+        }
+
+        return $body;
+    }
+}