Prevent overriding the existing model class

src/Generators/ModelGenerator.php

@@ -14,11 +14,13 @@ class ModelGenerator extends BaseGenerator
     {
         $modelPath = $this->modelNames['model_path'];
         $modelDirectory = $this->makeDirectory(app_path($modelPath));
+        $modelClassPath = $modelDirectory.'/'.$this->modelNames['model_name'].'.php';
 
-        $this->generateFile(
-            $modelDirectory.'/'.$this->modelNames['model_name'].'.php',
-            $this->getContent('models/model')
-        );
+        if ($this->files->exists($modelClassPath)) {
+            return;
+        }
+
+        $this->generateFile($modelClassPath, $this->getContent('models/model'));
 
         $this->command->info($this->modelNames['model_name'].' model generated.');
     }

tests/Generators/ModelGeneratorTest.php

@@ -97,4 +97,30 @@ class Category extends Model
         $this->removeFileOrDir(resource_path('views/categories'));
         $this->removeFileOrDir(resource_path("lang/en/category.php"));
     }
+
+    /** @test */
+    public function it_doesnt_override_the_existing_model()
+    {
+        $this->mockConsoleOutput = true;
+        config(['auth.providers.users.model' => 'App\Models\User']);
+        $this->artisan('make:model', ['name' => 'Models/'.$this->model_name, '--no-interaction' => true]);
+        $this->artisan('make:crud', ['name' => $this->model_name, '--no-interaction' => true])
+            ->expectsQuestion('Model file exists, are you sure to generate CRUD files?', true);
+
+        $modelPath = app_path('Models/'.$this->model_name.'.php');
+        $this->assertFileExists($modelPath);
+        $modelClassContent = "<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class {$this->model_name} extends Model
+{
+    use HasFactory;
+}
+";
+        $this->assertEquals($modelClassContent, file_get_contents($modelPath));
+    }
 }