Enforce readonly modifier on class properties

CHANGELOG.md

@@ -13,6 +13,7 @@ All notable changes to `cybercog/youtrack-rest-php` will be documented in this f
 - ([#58]) Bumped minimum Guzzle version to v7
 - ([#59]) Raised minimum PHP version to v8.1
 - ([#60]) Enforced class properties strict types
+- ([#61]) Enforced readonly modifier on class properties
 
 ## [7.0.0] - 2022-10-02
 
@@ -155,6 +156,7 @@ All notable changes to `cybercog/youtrack-rest-php` will be documented in this f
 [3.0.0]: https://github.com/cybercog/youtrack-rest-php/compare/2.0.1...3.0.0
 [2.0.1]: https://github.com/cybercog/youtrack-rest-php/compare/1.0.0...2.0.1
 
+[#61]: https://github.com/cybercog/youtrack-rest-php/pull/61
 [#60]: https://github.com/cybercog/youtrack-rest-php/pull/60
 [#59]: https://github.com/cybercog/youtrack-rest-php/pull/59
 [#58]: https://github.com/cybercog/youtrack-rest-php/pull/58

contracts/Authenticator/Authenticator.php

@@ -22,7 +22,9 @@ interface Authenticator
      *
      * @throws \Cog\Contracts\YouTrack\Rest\Authenticator\Exceptions\AuthenticationException
      */
-    public function authenticate(ClientInterface $client): void;
+    public function authenticate(
+        ClientInterface $client,
+    ): void;
 
     /**
      * Retrieve authentication token.

contracts/Authorizer/Authorizer.php

@@ -20,5 +20,7 @@ interface Authorizer
     /**
      * Append authorization headers to REST client.
      */
-    public function appendHeadersTo(ClientInterface $client): void;
+    public function appendHeadersTo(
+        ClientInterface $client,
+    ): void;
 }

contracts/Client/Client.php

@@ -35,7 +35,12 @@ interface Client
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function request(string $method, string $uri, array $params = [], array $options = []): ResponseInterface;
+    public function request(
+        string $method,
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface;
 
     /**
      * Create and send an GET HTTP request.
@@ -49,7 +54,11 @@ public function request(string $method, string $uri, array $params = [], array $
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function get(string $uri, array $params = [], array $options = []): ResponseInterface;
+    public function get(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface;
 
     /**
      * Create and send an POST HTTP request.
@@ -63,7 +72,11 @@ public function get(string $uri, array $params = [], array $options = []): Respo
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function post(string $uri, array $params = [], array $options = []): ResponseInterface;
+    public function post(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface;
 
     /**
      * Create and send an PUT HTTP request.
@@ -77,7 +90,11 @@ public function post(string $uri, array $params = [], array $options = []): Resp
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function put(string $uri, array $params = [], array $options = []): ResponseInterface;
+    public function put(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface;
 
     /**
      * Create and send an DELETE HTTP request.
@@ -91,18 +108,27 @@ public function put(string $uri, array $params = [], array $options = []): Respo
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function delete(string $uri, array $params = [], array $options = []): ResponseInterface;
+    public function delete(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface;
 
     /**
      * Write header value.
      */
-    public function withHeader(string $key, string $value): void;
+    public function withHeader(
+        string $key,
+        string $value,
+    ): void;
 
     /**
      * Write header values.
      *
      * @param array $headers
      * @return void
      */
-    public function withHeaders(array $headers): void;
+    public function withHeaders(
+        array $headers,
+    ): void;
 }

contracts/HttpClient/HttpClient.php

@@ -27,5 +27,9 @@ interface HttpClient
      *
      * @throws \Cog\Contracts\YouTrack\Rest\HttpClient\Exceptions\HttpClientException
      */
-    public function request(string $method, string $uri, array $options = []): PsrResponseInterface;
+    public function request(
+        string $method,
+        string $uri,
+        array $options = [],
+    ): PsrResponseInterface;
 }

contracts/Response/Response.php

@@ -33,7 +33,9 @@ public function statusCode(): int;
     /**
      * Retrieves a comma-separated string of the values for a single header.
      */
-    public function header(string $header): string;
+    public function header(
+        string $header,
+    ): string;
 
     /**
      * Transform response cookie headers to string.
@@ -60,7 +62,9 @@ public function toArray(): array;
     /**
      * Assert the status code of the response.
      */
-    public function isStatusCode(int $code): bool;
+    public function isStatusCode(
+        int $code,
+    ): bool;
 
     /**
      * Determine if response has successful status code.

src/Authenticator/CookieAuthenticator.php

@@ -27,8 +27,8 @@ class CookieAuthenticator implements
     private string $cookie = '';
 
     public function __construct(
-        private string $username,
-        private string $password,
+        private readonly string $username,
+        private readonly string $password,
     ) {
     }
 
@@ -37,8 +37,9 @@ public function __construct(
      *
      * @throws \Cog\Contracts\YouTrack\Rest\Authenticator\Exceptions\AuthenticationException
      */
-    public function authenticate(ClientInterface $client): void
-    {
+    public function authenticate(
+        ClientInterface $client,
+    ): void {
         if ($this->cookie !== '' || $this->isAuthenticating) {
             return;
         }

src/Authorizer/CookieAuthorizer.php

@@ -21,7 +21,7 @@ class CookieAuthorizer implements
     AuthorizerInterface
 {
     public function __construct(
-        private AuthenticatorInterface $authenticator,
+        private readonly AuthenticatorInterface $authenticator,
     ) {
     }
 
@@ -30,8 +30,9 @@ public function __construct(
      *
      * @throws \Cog\Contracts\YouTrack\Rest\Authenticator\Exceptions\AuthenticationException
      */
-    public function appendHeadersTo(ClientInterface $client): void
-    {
+    public function appendHeadersTo(
+        ClientInterface $client,
+    ): void {
         $this->authenticator->authenticate($client);
 
         $client->withHeader('Cookie', $this->authenticator->token());

src/Authorizer/TokenAuthorizer.php

@@ -23,15 +23,16 @@ class TokenAuthorizer implements
     AuthorizerInterface
 {
     public function __construct(
-        private string $token,
+        private readonly string $token,
     ) {
     }
 
     /**
      * Append authorization headers to REST client.
      */
-    public function appendHeadersTo(ClientInterface $client): void
-    {
+    public function appendHeadersTo(
+        ClientInterface $client,
+    ): void {
         $client->withHeader('Authorization', "Bearer {$this->token}");
     }
 }

src/Client/YouTrackClient.php

@@ -39,13 +39,13 @@ class YouTrackClient implements
     /**
      * Request headers.
      *
-     * @var array
+     * @var array<string, string>
      */
     private array $headers = [];
 
     public function __construct(
-        private HttpClientInterface $httpClient,
-        private AuthorizerInterface $authorizer,
+        private readonly HttpClientInterface $httpClient,
+        private readonly AuthorizerInterface $authorizer,
         string | null $endpointPathPrefix = null,
     ) {
         $this->endpointPathPrefix = $endpointPathPrefix !== null
@@ -66,8 +66,12 @@ public function __construct(
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function request(string $method, string $uri, array $params = [], array $options = []): ResponseInterface
-    {
+    public function request(
+        string $method,
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface {
         try {
             $response = $this->httpClient->request(
                 $method,
@@ -100,8 +104,11 @@ public function request(string $method, string $uri, array $params = [], array $
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function get(string $uri, array $params = [], array $options = []): ResponseInterface
-    {
+    public function get(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface {
         return $this->request('GET', $uri, $params, $options);
     }
 
@@ -117,8 +124,11 @@ public function get(string $uri, array $params = [], array $options = []): Respo
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function post(string $uri, array $params = [], array $options = []): ResponseInterface
-    {
+    public function post(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface {
         return $this->request('POST', $uri, $params, $options);
     }
 
@@ -134,8 +144,11 @@ public function post(string $uri, array $params = [], array $options = []): Resp
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function put(string $uri, array $params = [], array $options = []): ResponseInterface
-    {
+    public function put(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface {
         return $this->request('PUT', $uri, $params, $options);
     }
 
@@ -151,16 +164,21 @@ public function put(string $uri, array $params = [], array $options = []): Respo
      * @throws \Cog\Contracts\YouTrack\Rest\Authorizer\Exceptions\InvalidAuthorizationToken
      * @throws \Cog\Contracts\YouTrack\Rest\Client\Exceptions\ClientException
      */
-    public function delete(string $uri, array $params = [], array $options = []): ResponseInterface
-    {
+    public function delete(
+        string $uri,
+        array $params = [],
+        array $options = [],
+    ): ResponseInterface {
         return $this->request('DELETE', $uri, $params, $options);
     }
 
     /**
      * Write header value.
      */
-    public function withHeader(string $key, string $value): void
-    {
+    public function withHeader(
+        string $key,
+        string $value,
+    ): void {
         $this->headers[$key] = $value;
     }
 
@@ -170,16 +188,18 @@ public function withHeader(string $key, string $value): void
      * @param array $headers
      * @return void
      */
-    public function withHeaders(array $headers): void
-    {
+    public function withHeaders(
+        array $headers,
+    ): void {
         $this->headers = array_merge_recursive($this->headers, $headers);
     }
 
     /**
      * Build endpoint URI.
      */
-    protected function buildUri(string $uri): string
-    {
+    protected function buildUri(
+        string $uri,
+    ): string {
         return $this->endpointPathPrefix . '/' . ltrim($uri, '/');
     }
 
@@ -190,8 +210,10 @@ protected function buildUri(string $uri): string
      * @param array $options
      * @return array
      */
-    protected function buildOptions(array $params = [], array $options = []): array
-    {
+    protected function buildOptions(
+        array $params = [],
+        array $options = [],
+    ): array {
         $defaultOptions = [
             'form_params' => $params,
             'headers' => $this->buildHeaders(),

src/HttpClient/GuzzleHttpClient.php

@@ -26,7 +26,7 @@ class GuzzleHttpClient implements
     HttpClientInterface
 {
     public function __construct(
-        private ClientInterface $httpClient,
+        private readonly ClientInterface $httpClient,
     ) {
     }
 
@@ -40,8 +40,11 @@ public function __construct(
      *
      * @throws \Cog\Contracts\YouTrack\Rest\HttpClient\Exceptions\HttpClientException
      */
-    public function request(string $method, string $uri, array $options = []): ResponseInterface
-    {
+    public function request(
+        string $method,
+        string $uri,
+        array $options = [],
+    ): ResponseInterface {
         try {
             return $this->httpClient->request($method, $uri, $this->buildOptions($options));
         } catch (BadResponseException | RequestException $e) {
@@ -61,8 +64,9 @@ public function request(string $method, string $uri, array $options = []): Respo
      * @param array $options
      * @return array
      */
-    private function buildOptions(array $options): array
-    {
+    private function buildOptions(
+        array $options,
+    ): array {
         return $this->appendUserAgent($options);
     }
 
@@ -72,8 +76,9 @@ private function buildOptions(array $options): array
      * @param array $options
      * @return array
      */
-    private function appendUserAgent(array $options): array
-    {
+    private function appendUserAgent(
+        array $options,
+    ): array {
         $defaultAgent = Utils::defaultUserAgent();
         if (extension_loaded('curl') && function_exists('curl_version')) {
             $curlVersion = \curl_version();