<?php

namespace App\Filament\Widgets\Data;

class HelperMoveingAveragePerformens
{
    public static function get(&$data)
    {
        $data['labels'] = array_slice($data['labels'], 2);

        $datasets = $data['datasets'];
        foreach ($datasets as $k => $dataset) {
            $arr = $dataset['data'];

            self::fillHoles($arr);

            $new = [];
            $last = count($arr);
            foreach ($arr as $key => $value) {
                if ($key == 1 && $last > 2) {
                    $new[] = round(($arr[0] + $value + $arr[2]) / 3, 1);
                } elseif ($key > 1 && $key < $last - 1) {
                    $new[] = round(($arr[$key - 1] + $value + $arr[$key + 1]) / 3, 1);
                }
            }
            $data['datasets'][$k]['data'] = $new;
        }
    }

    public static function fillHoles(array &$arr)
    {
        if (! $arr[0]) {
            // get first value in array and copy it to start if start is null
            $arr[0] = current(array_filter($arr));
        }
        foreach ($arr as $key => $value) {
            if ($value) {
                $priv = $value;
            } else {
                $arr[$key] = $priv;
            }
        }
    }
}