<?php

declare(strict_types=1);

namespace R2Manager\Support;

final class Formatter
{
    public static function bytes(int|float $bytes): string
    {
        $units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
        $value = max(0, (float) $bytes);
        $unit = 0;

        while ($value >= 1024 && $unit < count($units) - 1) {
            $value /= 1024;
            $unit++;
        }

        return ($unit === 0 ? number_format($value, 0) : number_format($value, 2)) . ' ' . $units[$unit];
    }

    public static function date(?string $value): string
    {
        if ($value === null || $value === '') {
            return 'Never';
        }

        $timestamp = strtotime($value);
        if ($timestamp === false) {
            return $value;
        }

        return date('M j, Y g:i A', $timestamp);
    }

    /**
     * @param array<string, string> $tags
     */
    public static function tagString(array $tags): string
    {
        $parts = [];
        foreach ($tags as $key => $value) {
            $parts[] = $key . '=' . $value;
        }

        return implode(', ', $parts);
    }
}