Refactor HttpClient out of JIRA controller

[MAILPOET-1885]

tasks/release/HttpClient.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace MailPoetTasks\Release;
+
+class HttpClient {
+  /** @var string|null */
+  private $base_uri;
+
+  public function __construct($base_uri = null) {
+    $this->base_uri = $base_uri === null ? null : rtrim($base_uri, '/');
+  }
+
+  public function get($url) {
+    return $this->request($url, 'GET');
+  }
+
+  public function post($url, array $data) {
+    return $this->request($url, 'POST', $data);
+  }
+
+  public function put($url, array $data) {
+    return $this->request($url, 'PUT', $data);
+  }
+
+  private function request($path, $method, array $data = null) {
+    $url = $this->base_uri === null ? $path : ("$this->base_uri/" . ltrim($path, '/'));
+    $options = [];
+    if ($method === 'POST' || $method === 'PUT') {
+      $options = [
+        'http' => [
+          'method' => $method,
+          'header' => "Content-type: application/json\r\n",
+          'content' => json_encode($data),
+        ]
+      ];
+    }
+    $context = stream_context_create($options);
+    $result = file_get_contents($url, false, $context);
+    if ($result === false) {
+      $error = error_get_last();
+      throw new \Exception('Request error: ' . $error['message']);
+    }
+    return json_decode($result, true);
+  }
+}