Update header methods

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## Upcoming
+## Added
+- New header methods
+
 ## [1.1.7] - 2017-07-12
 ## Fixed
 - Fix default property in getProperty()

src/Api/Protocol/Http/HttpRequest.php

@@ -54,6 +54,11 @@ class HttpRequest
      */
     private $headers = [];
 
+    /**
+     * @var array
+     */
+    private $headerKeys = [];
+
     /**
      * @var string
      */
@@ -89,7 +94,11 @@ public function __construct(
         $this->url = $url;
         $this->query = $query;
         $this->postData = $postData;
-        $this->headers = $headers;
+        $this->headers = array_combine(
+            array_map('strtoupper', array_keys($headers)),
+            array_values($headers)
+        );
+        $this->headerKeys = array_keys($headers);
         $this->body = $body;
         $this->files = $files;
     }
@@ -258,27 +267,60 @@ public function getProtocolVersion()
      * @param string $name
      * @return bool
      */
-    public function hasHeader($name)
+    public function hasHeader(string $name): bool
     {
-        return isset($this->headers[$name]);
+        return isset($this->headers[strtoupper($name)]);
     }
 
     /**
      * @param string $name
      * @param string $default
      * @return string
      */
-    public function getHeader($name, $default = '')
+    public function getHeader(string $name, string $default = ''): string
+    {
+        return $this->headers[strtoupper($name)][0] ?? $default;
+    }
+
+    /**
+     * @param string $name
+     * @param array $default
+     * @return array
+     */
+    public function getHeaderArray(string $name, array $default = []): array
+    {
+        return $this->headers[strtoupper($name)] ?? $default;
+    }
+
+    /**
+     * @param array $arr
+     * @return mixed
+     */
+    private function getFirst(array $arr)
+    {
+        return $arr[0];
+    }
+
+    /**
+     * @return array
+     */
+    public function getHeaders(): array
     {
-        return $this->hasHeader($name)? $this->headers[$name] : $default;
+        return array_combine(
+            $this->headerKeys,
+            array_values(array_map([$this, 'getFirst'], $this->headers))
+        );
     }
 
     /**
      * @return array
      */
-    public function getHeaders()
+    public function getHeadersArray(): array
     {
-        return $this->headers;
+        return array_combine(
+            $this->headerKeys,
+            array_values($this->headers)
+        );
     }
 
     /**

src/Api/TransportMeta.php

@@ -216,7 +216,7 @@ public function getLevel()
      */
     public function getProperty(string $name, string $default = ''): string
     {
-        return $this->properties[$name] ?: $default;
+        return $this->properties[$name] ?? $default;
     }
 
     /**