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<?php

namespace FluentMail\Includes\Support;

use Closure;
use ArrayAccess;
use FluentMail\Includes\Support\Collection;
use FluentMail\Includes\Support\MacroableTrait;

class Arr {

use MacroableTrait;

/**
     * Add an element to an array using "dot" notation if it doesn't exist.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $value
     * @return array
     */
    public static function add($array, $key, $value)
    {
        if (is_null(static::get($array, $key)))
        {
            static::set($array, $key, $value);
        }

return $array;
    }

/**
     * Build a new array using a callback.
     *
     * @param  array     $array
     * @param  \Closure  $callback
     * @return array
     */
    public static function build($array, Closure $callback)
    {
        $results = array();

foreach ($array as $key => $value)
        {
            list($innerKey, $innerValue) = call_user_func($callback, $key, $value);

$results[$innerKey] = $innerValue;
        }

return $results;
    }

/**
     * Divide an array into two arrays. One with keys and the other with values.
     *
     * @param  array  $array
     * @return array
     */
    public static function divide($array)
    {
        return array(array_keys($array), array_values($array));
    }

/**
     * Flatten a multi-dimensional associative array with dots.
     *
     * @param  array   $array
     * @param  string  $prepend
     * @return array
     */
    public static function dot($array, $prepend = '')
    {
        $results = array();

foreach ($array as $key => $value)
        {
            if (is_array($value))
            {
                $results = array_merge($results, static::dot($value, $prepend.$key.'.'));
            }
            else
            {
                $results[$prepend.$key] = $value;
            }
        }

return $results;
    }

/**
     * Get all of the given array except for a specified array of items.
     *
     * @param  array  $array
     * @param  array|string  $keys
     * @return array
     */
    public static function except($array, $keys)
    {
        return array_diff_key($array, array_flip((array) $keys));
    }

/**
     * Fetch a flattened array of a nested array element.
     *
     * @param  array   $array
     * @param  string  $key
     * @return array
     */
    public static function fetch($array, $key)
    {
        foreach (explode('.', $key) as $segment)
        {
            $results = array();

foreach ($array as $value)
            {
                if (array_key_exists($segment, $value = (array) $value))
                {
                    $results[] = $value[$segment];
                }
            }

$array = array_values($results);
        }

return array_values($results);
    }

/**
     * Return the first element in an array passing a given truth test.
     *
     * @param  array     $array
     * @param  \Closure  $callback
     * @param  mixed     $default
     * @return mixed
     */
    public static function first($array, $callback, $default = null)
    {
        foreach ($array as $key => $value)
        {
            if (call_user_func($callback, $key, $value)) return $value;
        }

return static::value($default);
    }

/**
     * Return the last element in an array passing a given truth test.
     *
     * @param  array     $array
     * @param  \Closure  $callback
     * @param  mixed     $default
     * @return mixed
     */
    public static function last($array, $callback, $default = null)
    {
        return static::first(array_reverse($array), $callback, $default);
    }

/**
     * Flatten a multi-dimensional array into a single level.
     *
     * @param  array  $array
     * @return array
     */
    public static function flatten($array)
    {
        $return = array();

array_walk_recursive($array, function($x) use (&$return) { $return[] = $x; });

return $return;
    }

/**
     * Remove one or many array items from a given array using "dot" notation.
     *
     * @param  array  $array
     * @param  array|string  $keys
     * @return void
     */
    public static function forget(&$array, $keys)
    {
        $original =& $array;

foreach ((array) $keys as $key)
        {
            $parts = explode('.', $key);

while (count($parts) > 1)
            {
                $part = array_shift($parts);

if (isset($array[$part]) && is_array($array[$part]))
                {
                    $array =& $array[$part];
                }
            }

unset($array[array_shift($parts)]);

// clean up after each pass
            $array =& $original;
        }
    }

/**
     * Get an item from an array using "dot" notation.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $default
     * @return mixed
     */
    public static function get($array, $key, $default = null)
    {
        return static::getItem($array, $key, $default);
    }

/**
     * Retrieves nested items from array(able) data
     * it's the laravel's date_get global function.
     * 
     * @param  mixed $target
     * @param  string $key
     * @param  mixed $default
     * @return mixed
     */
    public static function getItem($target, $key, $default = null)
    {
        if (is_null($key)) return $target;

foreach (explode('.', $key) as $segment) {
            if (is_array($target)) {
                if (!array_key_exists($segment, $target)) {
                    return static::value($default);
                }
                $target = $target[$segment];
            } elseif ($target instanceof ArrayAccess) {
                if (!isset($target[$segment])) {
                    return static::value($default);
                }
                $target = $target[$segment];
            } elseif (is_object($target)) {
                if (!isset($target->{$segment})) {
                    return static::value($default);
                }
                $target = $target->{$segment};
            } else {
                return static::value($default);
            }
        }

return $target;
    }

/**
     * Check if an item exists in an array using "dot" notation.
     *
     * @param  array   $array
     * @param  string  $key
     * @return bool
     */
    public static function has($array, $key)
    {
        if (empty($array) || is_null($key)) return false;

if (array_key_exists($key, $array)) return true;

foreach (explode('.', $key) as $segment)
        {
            if ( ! is_array($array) || ! array_key_exists($segment, $array))
            {
                return false;
            }

$array = $array[$segment];
        }

return true;
    }

/**
     * Get a subset of the items from the given array.
     *
     * @param  array  $array
     * @param  array|string  $keys
     * @return array
     */
    public static function only($array, $keys)
    {
        return array_intersect_key($array, array_flip((array) $keys));
    }

/**
     * Pluck an array of values from an array.
     *
     * @param  array   $array
     * @param  string  $value
     * @param  string  $key
     * @return array
     */
    public static function pluck($array, $value, $key = null)
    {
        $results = array();

foreach ($array as $item)
        {
            $itemValue = is_object($item) ? $item->{$value} : $item[$value];

// If the key is "null", we will just append the value to the array and keep
            // looping. Otherwise we will key the array using the value of the key we
            // received from the developer. Then we'll return the final array form.
            if (is_null($key))
            {
                $results[] = $itemValue;
            }
            else
            {
                $itemKey = is_object($item) ? $item->{$key} : $item[$key];

$results[$itemKey] = $itemValue;
            }
        }

return $results;
    }

/**
     * Get a value from the array, and remove it.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $default
     * @return mixed
     */
    public static function pull(&$array, $key, $default = null)
    {
        $value = static::get($array, $key, $default);

static::forget($array, $key);

return $value;
    }

/**
     * Set an array item to a given value using "dot" notation.
     *
     * If no key is given to the method, the entire array will be replaced.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $value
     * @return array
     */
    public static function set(&$array, $key, $value)
    {
        if (is_null($key)) return $array = $value;

$keys = explode('.', $key);

while (count($keys) > 1)
        {
            $key = array_shift($keys);

// If the key doesn't exist at this depth, we will just create an empty array
            // to hold the next value, allowing us to create the arrays to hold final
            // values at the correct depth. Then we'll keep digging into the array.
            if ( ! isset($array[$key]) || ! is_array($array[$key]))
            {
                $array[$key] = array();
            }

$array =& $array[$key];
        }

$array[array_shift($keys)] = $value;

return $array;
    }

/**
     * Sort the array using the given Closure.
     *
     * @param  array     $array
     * @param  \Closure  $callback
     * @return array
     */
    public static function sort($array, Closure $callback)
    {
        return Collection::make($array)->sortBy($callback)->all();
    }

/**
     * Filter the array using the given Closure.
     *
     * @param  array     $array
     * @param  \Closure  $callback
     * @return array
     */
    public static function where($array, Closure $callback)
    {
        $filtered = array();

foreach ($array as $key => $value)
        {
            if (call_user_func($callback, $key, $value)) $filtered[$key] = $value;
        }

return $filtered;
    }

public static function value($value)
    {
        return $value instanceof Closure ? $value() : $value;
    }
}