Http Client Wrapper for Calling Inter-Service API's

HmacHttpClient.php

<?php

namespace App\Services;

use Illuminate\Support\Facades\Http;
use Illuminate\Http\Client\Response;

class HmacHttpClient
{
    public static function request(
        string $method,
        string $url,
        array|string|null $body = null,
        array $headers = []
    ): Response {
        $timestamp = time();
        $nonce = str()->uuid()->toString();

        if (is_array($body)) {
            $body_payload = json_encode($body, JSON_UNESCAPED_SLASHES);
        } elseif (is_string($body)) {
            $body_payload = $body;
        } else {
            $body_payload = '';
        }

        $body_hash = hash('sha256', $body_payload);

        $path = parse_url($url, PHP_URL_PATH) ?? '/';

        $canonical = implode("\n", [
            strtoupper($method),
            '/' . ltrim($path, '/'),
            $body_hash,
            $timestamp,
            $nonce,
        ]);

        $signature = hash_hmac(
            'sha256',
            $canonical,
            config('services.hmac.key')
        );

        return Http::withHeaders(array_merge([
            'X-Signature' => $signature,
            'X-Timestamp' => $timestamp,
            'X-Nonce' => $nonce,
            'Content-Type' => 'application/json',
            'Accept' => 'application/json'
        ], $headers))
        ->send($method, $url, [
            'body' => $body_payload,
        ]);
    }
}