Added command to add a new admin user

Closes #609

app/Console/Commands/CreateAdmin.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace BookStack\Console\Commands;
+
+use BookStack\Repos\UserRepo;
+use Illuminate\Console\Command;
+
+class CreateAdmin extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'bookstack:create-admin
+                            {--email= : The email address for the new admin user}
+                            {--name= : The name of the new admin user}
+                            {--password= : The password to assign to the new admin user}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Add a new admin user to the system';
+
+    protected $userRepo;
+
+    /**
+     * Create a new command instance.
+     *
+     * @param UserRepo $userRepo
+     */
+    public function __construct(UserRepo $userRepo)
+    {
+        $this->userRepo = $userRepo;
+        parent::__construct();
+    }
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     * @throws \BookStack\Exceptions\NotFoundException
+     */
+    public function handle()
+    {
+        $email = trim($this->option('email'));
+        if (empty($email)) {
+            $email = $this->ask('Please specify an email address for the new admin user');
+        }
+        if (strlen($email) < 5 || !filter_var($email, FILTER_VALIDATE_EMAIL)) {
+            return $this->error('Invalid email address provided');
+        }
+
+        if ($this->userRepo->getByEmail($email) !== null) {
+            return $this->error('A user with the provided email already exists!');
+        }
+
+        $name = trim($this->option('name'));
+        if (empty($name)) {
+            $name = $this->ask('Please specify an name for the new admin user');
+        }
+        if (strlen($name) < 2) {
+            return $this->error('Invalid name provided');
+        }
+
+        $password = trim($this->option('password'));
+        if (empty($password)) {
+            $password = $this->secret('Please specify a password for the new admin user');
+        }
+        if (strlen($password) < 5) {
+            return $this->error('Invalid password provided, Must be at least 5 characters');
+        }
+
+
+        $user = $this->userRepo->create(['email' => $email, 'name' => $name, 'password' => $password]);
+        $this->userRepo->attachSystemRole($user, 'admin');
+        $this->userRepo->downloadGravatarToUserAvatar($user);
+        $user->email_confirmed = true;
+        $user->save();
+
+        $this->info("Admin account with email \"{$user->email}\" successfully created!");
+    }
+}