Implement API for Premium plugin installation and activation

[MAILPOET-2431]

lib/API/JSON/v1/Premium.php

@@ -0,0 +1,74 @@
+<?php
+
+namespace MailPoet\API\JSON\v1;
+
+use MailPoet\API\JSON\Endpoint as APIEndpoint;
+use MailPoet\API\JSON\Error as APIError;
+use MailPoet\Config\AccessControl;
+use MailPoet\Config\ServicesChecker;
+use MailPoet\WP\Functions as WPFunctions;
+use WP_Error;
+
+class Premium extends APIEndpoint {
+  const PREMIUM_PLUGIN_SLUG = 'mailpoet-premium';
+  const PREMIUM_PLUGIN_PATH = 'mailpoet-premium/mailpoet-premium.php';
+
+  public $permissions = [
+    'global' => AccessControl::PERMISSION_MANAGE_SETTINGS,
+  ];
+
+  /** @var ServicesChecker */
+  private $services_checker;
+
+  /** @var WPFunctions */
+  private $wp;
+
+  public function __construct(
+    ServicesChecker $services_checker,
+    WPFunctions $wp
+  ) {
+    $this->services_checker = $services_checker;
+    $this->wp = $wp;
+  }
+
+  public function installPlugin() {
+    $premium_key_valid = $this->services_checker->isPremiumKeyValid(false);
+    if (!$premium_key_valid) {
+      return $this->error($this->wp->__('Premium key is not valid.', 'mailpoet'));
+    }
+
+    $plugin_info = $this->wp->pluginsApi('plugin_information', [
+      'slug' => self::PREMIUM_PLUGIN_SLUG,
+    ]);
+
+    if (!$plugin_info || $plugin_info instanceof WP_Error) {
+      return $this->error($this->wp->__('Error when installing MailPoet Premium plugin.', 'mailpoet'));
+    }
+
+    $plugin_info = (array)$plugin_info;
+    $result = $this->wp->installPlugin($plugin_info['download_link']);
+    if ($result !== true) {
+      return $this->error($this->wp->__('Error when installing MailPoet Premium plugin.', 'mailpoet'));
+    }
+    return $this->successResponse();
+  }
+
+  public function activatePlugin() {
+    $premium_key_valid = $this->services_checker->isPremiumKeyValid(false);
+    if (!$premium_key_valid) {
+      return $this->error($this->wp->__('Premium key is not valid.', 'mailpoet'));
+    }
+
+    $result = $this->wp->activatePlugin(self::PREMIUM_PLUGIN_PATH);
+    if ($result !== null) {
+      return $this->error($this->wp->__('Error when activating MailPoet Premium plugin.', 'mailpoet'));
+    }
+    return $this->successResponse();
+  }
+
+  private function error($message) {
+    return $this->badRequest([
+      APIError::BAD_REQUEST => $message,
+    ]);
+  }
+}