<?php

namespace App\Support;

class ChannelEntrySignature
{
    /**
     * @param  array{channel_code?: mixed, timestamp?: mixed, name?: mixed, mobile?: mixed, company_name?: mixed, state?: mixed}  $parameters
     */
    public static function make(array $parameters, string $sharedSecret): string
    {
        $values = [
            'channel_code' => self::trimmed($parameters['channel_code'] ?? ''),
            'timestamp' => self::trimmed($parameters['timestamp'] ?? ''),
            'name' => self::trimmed($parameters['name'] ?? ''),
            'mobile' => self::trimmed($parameters['mobile'] ?? ''),
            'company_name' => self::trimmed($parameters['company_name'] ?? ''),
            'state' => self::trimmed($parameters['state'] ?? ''),
            'secret' => trim($sharedSecret),
        ];

        $joined = [];
        foreach ($values as $key => $value) {
            $joined[] = $key.'='.$value;
        }

        return hash('sha256', implode('&', $joined));
    }

    private static function trimmed(mixed $value): string
    {
        return is_scalar($value) ? trim((string) $value) : '';
    }
}