<?php

namespace LdapRecord\Support;

use ArrayAccess;

class Arr
{
    /**
     * Determine whether the given value is array accessible.
     *
     * @param mixed $value
     *
     * @return bool
     */
    public static function accessible($value)
    {
        return is_array($value) || $value instanceof ArrayAccess;
    }

    /**
     * Determine if the given key exists in the provided array.
     *
     * @param \ArrayAccess|array $array
     * @param string|int         $key
     *
     * @return bool
     */
    public static function exists($array, $key)
    {
        if ($array instanceof ArrayAccess) {
            return $array->offsetExists($key);
        }

        return array_key_exists($key, $array);
    }

    /**
     * If the given value is not an array and not null, wrap it in one.
     *
     * @param mixed $value
     *
     * @return array
     */
    public static function wrap($value)
    {
        if (is_null($value)) {
            return [];
        }

        return is_array($value) ? $value : [$value];
    }

    /**
     * Return the first element in an array passing a given truth test.
     *
     * @param iterable      $array
     * @param callable|null $callback
     * @param mixed         $default
     *
     * @return mixed
     */
    public static function first($array, callable $callback = null, $default = null)
    {
        if (is_null($callback)) {
            if (empty($array)) {
                return Helpers::value($default);
            }

            foreach ($array as $item) {
                return $item;
            }
        }

        foreach ($array as $key => $value) {
            if ($callback($value, $key)) {
                return $value;
            }
        }

        return Helpers::value($default);
    }

    /**
     * Return the last element in an array passing a given truth test.
     *
     * @param array         $array
     * @param callable|null $callback
     * @param mixed         $default
     *
     * @return mixed
     */
    public static function last($array, callable $callback = null, $default = null)
    {
        if (is_null($callback)) {
            return empty($array) ? Helpers::value($default) : end($array);
        }

        return static::first(array_reverse($array, true), $callback, $default);
    }

    /**
     * Get an item from an array using "dot" notation.
     *
     * @param ArrayAccess|array $array
     * @param string|int|null   $key
     * @param mixed             $default
     *
     * @return mixed
     */
    public static function get($array, $key, $default = null)
    {
        if (! static::accessible($array)) {
            return Helpers::value($default);
        }

        if (is_null($key)) {
            return $array;
        }

        if (static::exists($array, $key)) {
            return $array[$key];
        }

        if (strpos($key, '.') === false) {
            return $array[$key] ?? Helpers::value($default);
        }

        foreach (explode('.', $key) as $segment) {
            if (static::accessible($array) && static::exists($array, $segment)) {
                $array = $array[$segment];
            } else {
                return Helpers::value($default);
            }
        }

        return $array;
    }
}