MaxTotalFileSize rule

Author: tanthammar

resources/lang/en/messages.php

@@ -18,4 +18,5 @@
     'vat-service-unavailable' => 'Sorry, but the "VIES EU Vat service" is unavailable. Unable to validate your Vat ID. Please try again later or contact support for personal assistance.',
     'vat-invalid' => 'The :attribute is not a valid VAT ID number.',
     'vat-name-unknown' => 'Unknown legal name',
+    'total-file-sizes' => 'The sum of all file sizes should not exeed :kb Kb.',
 ];

resources/lang/sv/messages.php

@@ -18,4 +18,5 @@
     'vat-service-unavailable' => 'Tyvärr svarar inte "VIES EU Vat test service". Det är därför omöjligt att verifiera ditt Moms-nr. Vänligen försök om en stund igen eller kontakta support för manuell hantering.',
     'vat-invalid' => ':Attribute är ej ett giltigt momsregistreringsnummer',
     'vat-name-unknown' => 'Juridiskt namn saknas',
+    'total-file-sizes' => 'Summan av filernas storlek får inte överstiga :kb Kb.',
 ];

src/Rules/MaxTotalFileSize.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace App\Rules;
+
+namespace TantHammar\LaravelRules\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+use Storage;
+
+/**
+ * $value must be an array with files
+ * Default max is 5 MB (5000Kb)
+ */
+class MaxTotalFileSize implements Rule
+{
+    public function __construct(
+        public int $maxKb = 5000
+    ) {}
+
+    public function passes($attribute, $value): bool
+    {
+        if(!is_array($value)) {
+            return false;
+        }
+
+        if(blank($value)) {
+            return true;
+        }
+
+        $total_size = array_reduce($value, static function ($sum, $file) {
+            // each item is UploadedFile Object
+            $sum += Storage::size((Storage::path($file)));
+            return $sum;
+        });
+
+        return $total_size <= ($this->maxKb * 1024);
+    }
+
+    public function message(): string
+    {
+        return __('laravel-rules::messages.total-file-sizes', ['kb' => $this->maxKb]);
+    }
+}