<?php

namespace Darksparrow\DeegraphInteractions\DataStructures;

class KeyValuePair
{
    public string $Key;
    public ?string $Value;

    public function __construct(string $key, ?string $value)
    {
        $this->Key = $key;
        $this->Value = $value;
    }

    public function __toString(): string
    {
        if(isset($this->Key) && isset($this->Value))
            return "{$this->Key} => \"{$this->Value}\"";

        if(!isset($this->Key) && isset($this->Value))
            return "NULL => \"{$this->Value}\"";

        if(isset($this->Key) && !isset($this->Value))
            return "{$this->Key} => NULL";

        if(isset($this->Key) && isset($this->Value))
            return "NULL => NULL";

        return "FAIL";
    }
}