Add Robofile commands for changelog update and get

[MAILPOET-1770]

.env.sample

@@ -25,3 +25,5 @@ WP_TEST_MAILER_SMTP_PASSWORD=""
 WP_SVN_USERNAME=""
 WP_SVN_PASSWORD=""
 WP_TRANSIFEX_API_TOKEN=""
+WP_JIRA_USER="" // Jira username/email
+WP_JIRA_TOKEN="" // Jira token (https://confluence.atlassian.com/cloud/api-tokens-938839638.html) or password

README.md

@@ -101,6 +101,9 @@ $ ./do qa:lint:javascript  # JS code linter.
 $ ./do qa:phpstan          # PHP code static analysis using PHPStan.
 $ ./do qa                  # PHP and JS linters.
 
+$ ./do changelog:get  [--version-name=...]     # Prints out changelog and release notes for given version or for newest version.
+$ ./do changelog:update  [--version-name=...] [--quiet] # Updates changelog in readme.txt for given version or for newest version.
+
 $ ./do container:dump      # Generates DI container cache.
 ```
 

RoboFile.php

@@ -550,6 +550,22 @@ class RoboFile extends \Robo\Tasks {
       ->run();
   }
 
+  function changelogUpdate($opts = ['version-name' => null]) {
+    $this->say("Updating changelog");
+    $outputs = $this->getChangelogController()->update($opts['version-name']);
+    if($opts['quiet']) {
+      return;
+    }
+    $this->say("Changelog \n{$outputs[0]} \n{$outputs[1]}\n\n");
+    $this->say("IMPORTANT NOTES \n" . ($outputs[2] ?: 'none'));
+  }
+
+  function changelogGet($opts = ['version-name' => null]) {
+    $outputs = $this->getChangelogController()->get($opts['version-name']);
+    $this->say("Changelog \n{$outputs[0]} \n{$outputs[1]}\n");
+    $this->say("IMPORTANT NOTES \n" . ($outputs[2] ?: 'none'));
+  }
+
   protected function loadEnv() {
     $dotenv = new Dotenv\Dotenv(__DIR__);
     $dotenv->load();
@@ -561,6 +577,17 @@ class RoboFile extends \Robo\Tasks {
     return !empty($m[1]) ? trim($m[1]) : false;
   }
 
+  protected function getChangelogController() {
+    require_once './tasks/release/ChangelogController.php';
+    $this->loadEnv();
+    return \MailPoetTasks\Release\ChangelogController::createWithJiraCredentials(
+      getenv('WP_JIRA_TOKEN'),
+      getenv('WP_JIRA_USER'),
+      \MailPoetTasks\Release\Jira::PROJECT_MAILPOET,
+      __DIR__ . '/readme.txt'
+    );
+  }
+
   public function testAcceptanceGroupTests() {
     return $this->taskSplitTestFilesByGroups(4)
       ->projectRoot('.')