add auth api

app/Repos/UserRepo.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace App\Repos;
+
+use App\Models\User;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Str;
+
+class UserRepo
+{
+    /**
+     * Register new user
+     */
+    public static function registerUser(Request $request): User
+    {
+        return User::create([
+            'phone_number' => $request->phone_number,
+            'name' => $request->name,
+            'username' => static::generateUsername($request->name),
+            'locale' => app()->getLocale(),
+            'password' => Str::random(6),
+            'active' => true,
+        ]);
+    }
+
+    /**
+     * Generate random and unique username
+     */
+    public static function generateUsername(string $name): string
+    {
+        // Convert the full name to lowercase and replace spaces with underscores
+        $username = Str::slug($name, '_');
+
+        $count = DB::table('users')->where('username', $username)->count();
+
+        if ($count > 0) {
+            $username = $username.'_'.($count + 1);
+        }
+
+        return $username;
+    }
+}