hajeebtok-backend/app/Types/DatabaseObjects/Follow.php

<?php

namespace app\Types\DatabaseObjects;

use app\Exceptions\FollowNotFoundException;
use app\Interfaces\IDatabaseObject;
use app\Hajeebtok;
use app\Logger;
use app\Exceptions\SecurityFaultException;

class Follow implements IDatabaseObject
{

	public private(set) ?int $follower_id;
	public private(set) ?int $followee_id;
	public function __construct(?int $follower_id = null, ?int $followee_id = null)
	{
        $this->follower_id = $follower_id;
        $this->followee_id = $followee_id;
	}

	/**
	 * Creates the table for the object type in the database.
	 */
	public static function CreateTable(): void
	{
		throw new SecurityFaultException("Attempt to create table on follow object.");
	}

	/**
	 * Drops the table for the object type from the database.
	 */
	public static function DropTable(): void
	{
		throw new SecurityFaultException("Attempt to drop table on follow object.");
	}
	
	/**
	 * Saves the object to the database.
	 */
	public function Save()
	{
		Hajeebtok::$Database->Query("INSERT INTO follows (follower_id, followee_id) VALUES (:follower_id, :followee_id)", [
			"follower_id" => $this->follower_id,
            "followee_id" => $this->followee_id
		]);
		$id = Hajeebtok::$Database->LastInsertId();
		Logger::Debug("Saved account id ($id).");
	}

	/**
	 * Deletes the object from the database.
	 */
	public function Delete()
	{
        if(empty($this->follower_id) || empty($this->followee_id)) throw new FollowNotFoundException(0, 404);
		Hajeebtok::$Database->Query("DELETE FROM follows WHERE follower_id = :follower_id AND followee_id = :followee_id", [
            "follower_id" => $this->follower_id,
            "followee_id" => $this->followee_id
        ]);
	}

	/**
	 * Loads the object from the database.
	 */

	public function Load()
	{
        // unimplemented
	}

    public function LoadMany(): array {
        if(!empty($this->follower_id) && empty($this->followee_id)) {
            $command = "SELECT * FROM follows WHERE follower_id = :follower_id";
            $array = ["follower_id" => $this->follower_id];
        } else if(empty($this->follower_id) && !empty($this->followee_id)) {
            $command = "SELECT * FROM follows WHERE followee_id = :followee_id";
            $array = ["followee_id" => $this->followee_id];
        } else {
            throw new FollowNotFoundException(0, 404);
        }
        
        return Hajeebtok::$Database->Query($command, $array);
    }

    public function Exists(): bool {
        if(empty($this->follower_id) || empty($this->followee_id)) throw new FollowNotFoundException(0, 400);
        $data = Hajeebtok::$Database->Query("SELECT * FROM follows WHERE follower_id = :follower_id AND followee_id = :followee_id", [
            "follower_id" => $this->follower_id,
            "followee_id" => $this->followee_id
        ]);

        return !empty($data);
    }
}