first commit

common/Settings/Validators/CacheConfigValidator.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace Common\Settings\Validators;
+
+use Common\Settings\DotEnvEditor;
+use Exception;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Str;
+use Throwable;
+
+class CacheConfigValidator
+{
+    const KEYS = ['cache_driver'];
+
+    public function fails($settings)
+    {
+        $this->setConfigDynamically($settings);
+
+        try {
+            $driverName = Arr::get(
+                $settings,
+                'cache_driver',
+                config('cache.default'),
+            );
+            $driver = Cache::driver($driverName);
+            $driver->put('foo', 'bar', 1);
+            if ($driver->get('foo') !== 'bar') {
+                return $this->getDefaultErrorMessage();
+            }
+        } catch (Exception $e) {
+            return $this->getErrorMessage($e);
+        } catch (Throwable $e) {
+            return $this->getErrorMessage($e);
+        }
+    }
+
+    private function setConfigDynamically($settings)
+    {
+        app(DotEnvEditor::class)->write(
+            Arr::except($settings, ['cache_driver']),
+        );
+    }
+
+    private function getErrorMessage($e): array
+    {
+        $message = $e->getMessage();
+
+        if (Str::contains($message, 'apc_fetch')) {
+            return ['cache_group' => "Could not enable APC. $message"];
+        } elseif (Str::contains($message, 'Memcached')) {
+            return ['cache_group' => "Could not enable Memcached. $message"];
+        } elseif (Str::contains($message, 'Connection refused')) {
+            return ['cache_group' => 'Could not connect to redis server.'];
+        } else {
+            return $this->getDefaultErrorMessage();
+        }
+    }
+
+    private function getDefaultErrorMessage(): array
+    {
+        return ['cache_group' => 'Could not enable this cache method.'];
+    }
+}