Create github release

[MAILPOET-2004]

RoboFile.php

@@ -539,6 +539,9 @@ class RoboFile extends \Robo\Tasks {
       ->addCode(function () use ($version) {
         return $this->releaseChangelogWrite($version);
       })
+      ->addCode(function () use ($version) {
+        $this->releaseCreatePullRequest($version);
+      })
       ->run();
   }
 
@@ -595,6 +598,18 @@ class RoboFile extends \Robo\Tasks {
       ->run();
   }
 
+  public function releaseCreatePullRequest($version) {
+    $this->taskGitStack()
+      ->stopOnFail()
+      ->add('-A')
+      ->commit('Release ' . $version)
+      ->tag($version)
+      ->exec('git push --set-upstream git@github.com:mailpoet/mailpoet.git release --follow-tags')
+      ->run();
+    $this->createGitHubController()
+      ->createReleasePullRequest($version);
+  }
+
   public function releasePublish($version = null) {
     $version = $this->releaseVersionGetNext($version);
     return $this->collectionBuilder()

tasks/release/GitHubController.php

@@ -14,6 +14,8 @@ class GitHubController {
 
   const RELEASE_SOURCE_BRANCH = 'release';
 
+  const QA_GITHUB_LOGIN = 'michelleshull';
+
   /** @var string */
   private $zip_filename;
 
@@ -32,6 +34,31 @@ class GitHubController {
     ]);
   }
 
+  public function createReleasePullRequest($version) {
+    $response = $this->http_client->post('pulls', [
+      'json' => [
+        'title' => 'Release ' . $version,
+        'head' => self::RELEASE_SOURCE_BRANCH,
+        'base' => 'master',
+      ],
+    ]);
+    $response = json_decode($response->getBody()->getContents(), true);
+    $pull_request_number = $response['number'];
+    if (!$pull_request_number) {
+      throw new \Exception('Failed to create a new release pull request');
+    }
+    $this->assignPullRequest($pull_request_number);
+  }
+
+  private function assignPullRequest($pull_request_number) {
+    $this->http_client->post("pulls/$pull_request_number/requested_reviewers", [
+      'json' => ['reviewers' => [self::QA_GITHUB_LOGIN]],
+    ]);
+    $this->http_client->post("issues/$pull_request_number/assignees", [
+      'json' => ['assignees' => [self::QA_GITHUB_LOGIN]],
+    ]);
+  }
+
   public function publishRelease($version, $changelog, $release_zip_path) {
     $this->ensureNoDraftReleaseExists();
     $this->ensureReleaseDoesNotExistYet($version);