<?php

//class Set Email

class SetEmail extends ChangeAttribute

{

        //Constructor
            public function __construct($arguments)
                {
                    parent::__construct($arguments, "Email");
                }




        //Change Email
            public function Execute ($message)
                {
                    parent::Execute($message);
                }



}
?>




<?php

//class changes an attribute

class ChangeAttribute extends Operation

{

    protected $attribute;
    protected $VkId;

        //Constructor
            public function __construct($arguments, $attribute)
                {
                    $this -> attribute = $attribute;
                    parent::__construct($arguments);
                }

        //Get Attribute ID
                public function AttributeId()
                    {
                        return intval($this->arguments["database"]->select("UsersAttributes", ["Id"], ["AttributeName" => $this -> attribute])[0]["Id"]);
                    }


        //Updates the attribute in DB
            public function UpdateAttribute($value)
                {
                    $this->arguments["database"]->update("UserAtrLinkage",
                    ["Value" => $value],
                    ["AND" => ["UserId" => $this->arguments["user"]->VkId, "AttrId" => $this -> AttributeId()]]);

                }

        //Add the attribute to DB
            public function AddAttribute($value)
                {
                    $this->arguments["database"]->insert("UserAtrLinkage", [
                    "AttrId" => $this -> AttributeId(),
                    "UserId" => $this->arguments["user"]->VkId,
                    "Value" => $value
                    ]);
                }



        //Add or Update
            public function Execute ($message)
                {
                    if (!empty(reset($this -> arguments["parameters"])))
                        {

                          if ($this->arguments["database"]->has("UserAtrLinkage", ["AND" => ["UserId" => $this->arguments["user"]->VkId, "AttrId" => $this -> AttributeId()]]))
                                {
                                    $this -> UpdateAttribute((reset($this -> arguments["parameters"])));
                                }
                                 else
                                         {
                                            $this -> AddAttribute((reset($this -> arguments["parameters"])));
                                         }

                        }

                    $this -> Say ($message);

                }





}
?>




<?php



//класс операции

abstract class Operation

{

        //Arguments
            protected $arguments;



        //Constructor
            public function __construct($arguments)
                {

                    $this->arguments = $arguments;
                }


        // Class factory
            public static function initial($operation, $arguments)
                {
                    return new $operation($arguments);
                }

        //Say $message to current user
            public function Say ($message)
                {

                    $this -> request_params = array(
                    'message' => $message,
                    'user_id' => $this -> arguments["user"] -> VkId,
                    'access_token' => VkBot\Settings\CommunityToken,
                    'v' => '5.0'
                     );

                    $this -> get_params = http_build_query($this -> request_params);

                    file_get_contents('https://api.vk.com/method/messages.send?'. $this -> get_params);

                }

        //Abstract method execute
            abstract public function Execute($message);




}
?>