<?php

/**
 * Class MC4WP_Array_Bag
 *
 * @access private
 * @ignore
 */
class MC4WP_Array_Bag
{

    /**
     * @var array
     */
    protected $array;

    /**
     * @param array $array
     */
    public function __construct(array $array)
    {
        $this->array = $array;
    }

    /**
     * @return array
     */
    public function keys()
    {
        return array_keys($this->array);
    }

    /**
     * @param string $name
     * @param mixed $value
     */
    public function set($name, $value)
    {
        $this->array[ $name ] = $value;
    }

    /**
     * @param string $name
     * @param mixed $default
     *
     * @return mixed
     */
    public function get($name, $default = null)
    {
        if (isset($this->array[ $name ])) {
            return $this->array[ $name ];
        }

        // allow dot access for nested array keys: key.subkey
        $array = $this->array;
        foreach (explode('.', $name) as $segment) {
            if (! array_key_exists($segment, $array)) {
                return $default;
            }

            $array = $array[$segment];
        }

        return $array;
    }

    /**
     * @return array
     */
    public function all()
    {
        return $this->array;
    }

    /**
     * @param $prefix
     *
     * @return array
     */
    public function all_with_prefix($prefix)
    {
        $return = array();
        $length = strlen($prefix);

        foreach ($this->array as $key => $value) {
            if (strpos($key, $prefix) === 0) {
                $new_key = substr($key, $length);
                $return[ $new_key ] = $value;
            }
        }

        return $return;
    }

    /**
     * @param $prefix
     * @return array
     */
    public function all_without_prefix($prefix)
    {
        $return = array();

        foreach ($this->array as $key => $value) {
            if (strpos($key, $prefix) !== 0) {
                $return[ $key ] = $value;
            }
        }

        return $return;
    }
}