Remove the explicit Guzzle dependency

.gitattributes

@@ -5,3 +5,5 @@
 /phpcs.xml.dist export-ignore
 /phpstan.neon export-ignore
 /phpunit.xml.dist export-ignore
+/.php-cs-fixer.dist.php export-ignore
+/bump-version.sh export-ignore

.gitignore

@@ -4,4 +4,5 @@ vendor
 .idea
 composer.lock
 .phpunit.result.cache
-.phpunit.cache
+.phpunit.cache
+.php-cs-fixer.cache

.php-cs-fixer.dist.php

@@ -0,0 +1,25 @@
+<?php
+
+$finder = (new PhpCsFixer\Finder())
+    ->in(__DIR__)
+    ->append([__FILE__]);
+
+return (new PhpCsFixer\Config())
+    ->setRules([
+        '@PER-CS' => true,
+        'no_empty_phpdoc' => true,
+        'no_superfluous_phpdoc_tags' => [
+            'allow_mixed' => true,
+        ],
+        'no_unused_imports' => true,
+        'not_operator_with_successor_space' => true,
+        'phpdoc_trim' => true,
+        'phpdoc_trim_consecutive_blank_line_separation' => true,
+        'trailing_comma_in_multiline' => [
+            'after_heredoc' => true,
+            // https://cs.symfony.com/doc/rules/control_structure/trailing_comma_in_multiline.html
+            // only enable for the elements that are safe to use with PHP 7.4+
+            'elements' => ['arguments', 'arrays'],
+        ],
+    ])
+    ->setFinder($finder);

README.md

@@ -99,6 +99,51 @@ $connection->setClientId('your-client-id')
     });
 ```
 
+### Transports
+
+By default, the SDK will create a `Transport` with the `TransportFactory` if you do not supply one.
+
+To create your own `Transport` you have to create a class which implements `Sendy\Api\Http\Tranport\TransportInterface`.
+
+An example for the Laravel framework could look like this
+
+```php
+use Illuminate\Foundation\Application;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Facades\Http;
+use Sendy\Api\Exceptions\TransportException;
+use Sendy\Api\Http\Request;
+use Sendy\Api\Http\Response;
+use Sendy\Api\Http\Transport\TransportInterface
+
+class LaravelTransport implements TransportInterface
+{
+    public function send(Request $request): Response
+    {
+        $headers = $request->getHeaders();
+        $contentType = Arr::pull($headers, 'Content-Type', 'application/json');
+
+        try {
+            $response = Http::withHeaders($headers)
+                ->withBody($request->getBody(), $contentType)
+                ->withMethod($request->getMethod())
+                ->withUrl($request->getUrl())
+                ->send();
+        } catch (\Throwable $e) {
+            throw new TransportException($e->getMessage(), $e->getCode(), $e);
+        }
+
+        return new Response($response->status(), $response->headers(), $response->body());
+    }
+
+    public function getUserAgent() : string
+    {
+        return 'LaravelHttpClient/' . Application::VERSION;
+    }
+}
+
+```
+
 ### Endpoints
 
 The endpoints in the API documentation are mapped to the resource as defined in the Resources directory. Please consult

bump_version.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Print the current version of the project and bump it to the given version.
+
+set -e
+
+current_version=$(echo "echo Connection::VERSION . PHP_EOL;" | cat src/Connection.php - | php)
+echo "Current version: $current_version"
+
+if [[ -z "$1" ]]
+then
+  echo "To bump the version, provide the new version number as an argument."
+  exit 1
+fi
+
+# Remove the 'v' prefix if it exists
+new_version=${1#v}
+
+echo "New version: $new_version"
+
+if ! [[ "$new_version" =~ ^[0-9]+\.[0-9]+\.[0-9](-[a-z]+\.[0-9]+)?$ ]]
+then
+  echo "Invalid version format. Please use semantic versioning (https://semver.org/)."
+  exit 1
+fi
+
+echo "Bumping version to: $new_version"
+
+perl -pi -e "s/^    public const VERSION = .*/    public const VERSION = '$new_version';/" src/Connection.php
+
+echo
+echo "To release the new version, first, commit the changes:"
+echo "  git add --all"
+echo "  git commit -m "$new_version""
+echo "  git push"
+echo
+echo "Once the commit is pushed to the master branch, create a release on GitHub to distribute the new version:"
+echo "  https://github.com/sendynl/php-sdk/releases/new?tag=v$new_version"

composer.json

@@ -27,8 +27,7 @@
     },
     "require": {
         "php": ">=7.4.0",
-        "ext-json": "*",
-        "guzzlehttp/guzzle": "~6.0|~7.0"
+        "ext-json": "*"
     },
     "config": {
         "platform": {
@@ -38,12 +37,15 @@
     "require-dev": {
         "phpunit/phpunit": "^9.0",
         "phpstan/phpstan": "^1",
-        "squizlabs/php_codesniffer": "^3.7",
-        "mockery/mockery": "^1.5"
+        "mockery/mockery": "^1.5",
+        "php-cs-fixer/shim": "^3.87",
+        "psr/http-client": "^1.0",
+        "psr/http-factory": "^1.1"
     },
     "scripts": {
-        "lint": "vendor/bin/phpcs",
-        "analyze": "vendor/bin/phpstan --xdebug",
+        "lint": "vendor/bin/php-cs-fixer fix --dry-run --diff",
+        "fix": "vendor/bin/php-cs-fixer fix",
+        "analyze": "vendor/bin/phpstan",
         "test": "vendor/bin/phpunit"
     }
 }

src/ApiException.php

@@ -2,29 +2,8 @@
 
 namespace Sendy\Api;
 
-final class ApiException extends \Exception
-{
-    /** @var array<string, string[]> */
-    private array $errors = [];
-
-    /**
-     * @param string $message
-     * @param int $code
-     * @param \Throwable|null $previous
-     * @param string[][] $errors
-     */
-    public function __construct(string $message = "", int $code = 0, ?\Throwable $previous = null, array $errors = [])
-    {
-        $this->errors = $errors;
-
-        parent::__construct($message, $code, $previous);
-    }
-
-    /**
-     * @return array<string, string[]>
-     */
-    public function getErrors(): array
-    {
-        return $this->errors;
-    }
-}
+/**
+ * @deprecated This interface exists for backwards compatibility and may be removed in a future version.
+ * @internal
+ */
+interface ApiException extends \Throwable {}