Check the release pull request before release

[MAILPOET-2004]

RoboFile.php

@@ -613,6 +613,9 @@ class RoboFile extends \Robo\Tasks {
   public function releasePublish($version = null) {
     $version = $this->releaseVersionGetNext($version);
     return $this->collectionBuilder()
+      ->addCode(function ()  use ($version) {
+        return $this->releaseCheckPullRequest($version);
+      })
       ->addCode(function () {
         return $this->releaseDownloadZip();
       })
@@ -640,6 +643,11 @@ class RoboFile extends \Robo\Tasks {
       ->run();
   }
 
+  public function releaseCheckPullRequest($version) {
+    $this->createGitHubController()
+      ->checkReleasePullRequestPassed($version);
+  }
+
   public function releaseVersionGetNext($version = null) {
     if (!$version) {
       $version = $this->getReleaseVersionController()

tasks/release/GitHubController.php

@@ -22,6 +22,9 @@ class GitHubController {
   /** @var HttpClient */
   private $http_client;
 
+  /** @var HttpClient */
+  private $http_client_no_base;
+
   public function __construct($username, $token, $project) {
     $this->zip_filename = $project === self::PROJECT_MAILPOET ? self::FREE_ZIP_FILENAME : self::PREMIUM_ZIP_FILENAME;
     $github_path = $project === self::PROJECT_MAILPOET ? 'mailpoet' : 'mailpoet-premium';
@@ -32,6 +35,12 @@ class GitHubController {
       ],
       'base_uri' => "https://api.github.com/repos/mailpoet/$github_path/",
     ]);
+    $this->http_client_no_base = new Client([
+      'auth' => [$username, $token],
+      'headers' => [
+        'Accept' => 'application/vnd.github.v3+json',
+      ],
+    ]);
   }
 
   public function createReleasePullRequest($version) {
@@ -59,6 +68,74 @@ class GitHubController {
     ]);
   }
 
+  public function checkReleasePullRequestPassed($version) {
+    $response = $this->http_client->get('pulls', [
+      'query' => [
+        'state' => 'all',
+        'head' => self::RELEASE_SOURCE_BRANCH,
+        'base' => 'master',
+        'direction' => 'desc',
+      ]
+    ]);
+    $response = json_decode($response->getBody()->getContents(), true);
+    if (sizeof($response) === 0) {
+      throw new \Exception('Failed to load release pull requests');
+    }
+    $response = array_filter($response, function ($pull_request) use ($version) {
+      return strpos($pull_request['title'], 'Release ' . $version) !== false;
+    });
+    if (sizeof($response) === 0) {
+      throw new \Exception('Release pull request not found');
+    }
+    $release_pull_request = reset($response);
+    if ($release_pull_request['state'] !== 'closed') {
+      throw new \Exception('Release pull request is still opened.');
+    }
+    if (!$release_pull_request['merged']) {
+      throw new \Exception('Release pull request has not been merged.');
+    }
+    $this->checkPullRequestChecks($release_pull_request['statuses_url']);
+    $pull_request_number = $release_pull_request['number'];
+    $this->checkPullRequestReviews($pull_request_number);
+  }
+
+  private function checkPullRequestChecks($statuses_url) {
+    $response = $this->http_client_no_base->get($statuses_url);
+    $response = json_decode($response->getBody()->getContents(), true);
+
+    // Find checks. Statuses are returned in reverse chronological order. We need to get the first of each type
+    $latest_statuses = [];
+    foreach ($response as $status) {
+      if (!isset($latest_statuses[$status['context']])) {
+        $latest_statuses[$status['context']] = $status;
+      }
+    }
+
+    $failed = [];
+    foreach ($latest_statuses as $status) {
+      if ($status['state'] !== 'success') {
+        $failed[] = $status['context'];
+      }
+    }
+    if (!empty($failed)) {
+      throw new \Exception('Release pull request build failed. Failed jobs: ' . join(', ', $failed));
+    }
+  }
+
+  private function checkPullRequestReviews($pull_request_number) {
+    $response = $this->http_client->get("pulls/$pull_request_number/reviews");
+    $response = json_decode($response->getBody()->getContents(), true);
+    $approved = 0;
+    foreach ($response as $review) {
+      if (strtolower($review['state']) === 'approved') {
+        $approved++;
+      }
+    }
+    if ($approved === 0) {
+      throw new \Exception('Pull Request has not been approved');
+    }
+  }
+
   public function publishRelease($version, $changelog, $release_zip_path) {
     $this->ensureNoDraftReleaseExists();
     $this->ensureReleaseDoesNotExistYet($version);