<?php

declare(strict_types=1);

namespace PmConverter;

class Environment implements \ArrayAccess
{
    /**
     * @var array
     */
    protected array $vars = [];

    /**
     * @param object $env
     */
    public function __construct(protected object $env)
    {
        foreach ($env->values as $var) {
            $this->vars["{{{$var->key}}}"] = $var->value;
        }
    }

    /**
     * Tells if there are some vars or not
     *
     * @return bool
     */
    public function hasVars(): bool
    {
        return !empty($this->vars);
    }

    /**
     * @inheritDoc
     */
    public function offsetExists(mixed $offset): bool
    {
        return array_key_exists($offset, $this->vars);
    }

    /**
     * @inheritDoc
     */
    public function offsetGet(mixed $offset): mixed
    {
        return $this->vars[$offset];
    }

    /**
     * @inheritDoc
     */
    public function offsetSet(mixed $offset, mixed $value): void
    {
        $this->vars[$offset] = $value;
    }

    /**
     * @inheritDoc
     */
    public function offsetUnset(mixed $offset): void
    {
        unset($this->vars[$offset]);
    }
}