Work on registration of existing systems to users

app/Models/Address.php

@@ -7,6 +7,7 @@ use Exception;
 use Illuminate\Database\Eloquent\Collection;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Support\Facades\Crypt;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Log;
 
@@ -369,6 +370,41 @@ class Address extends Model
 		return ($o && $o->system->active) ? $o : NULL;
 	}
 
+	/**
+	 * Create an activation code for this address
+	 *
+	 * @param User $uo
+	 * @return string
+	 */
+	public function set_activation(User $uo): string
+	{
+		return sprintf('%x:%s',
+			$this->id,
+			substr(md5(sprintf('%d:%x',$uo->id,timew($this->updated_at))),0,10)
+		);
+	}
+
+	/**
+	 * Check the user's activation code for this address is correct
+	 *
+	 * @param User $uo
+	 * @param string $code
+	 * @return bool
+	 */
+	public function check_activation(User $uo,string $code): bool
+	{
+		try {
+			Log::info(sprintf('%s:Checking Activation code [%s] invalid for user [%d]',self::LOGKEY,$code,$uo->id));
+
+			return ($code == $this->set_activation($uo));
+
+		} catch (\Exception $e) {
+			Log::error(sprintf('%s:! Activation code [%s] invalid for user [%d]',self::LOGKEY,$code,$uo->id));
+
+			return FALSE;
+		}
+	}
+
 	/**
 	 * Netmail waiting to be sent to this system
 	 *