move requests to backend (#18)

source/includes/EventsListShortcut.php

@@ -0,0 +1,48 @@
+<?php
+namespace MobilizonConnector;
+
+class EventsListShortcut {
+  
+  public static function init() {
+    add_shortcode(NAME . '-events-list', 'MobilizonConnector\EventsListShortcut::inflate');
+  }
+
+  public static function inflate($atts = [], $content = null) {
+    // Normalize attribute keys, lowercase.
+    $atts = array_change_key_case((array) $atts, CASE_LOWER);
+ 
+    // Override default attributes with user attributes.
+    $atts_with_overriden_defaults = shortcode_atts(
+      array(
+        'events-count' => DEFAULT_EVENTS_COUNT,
+        'group-name' => '',
+      ), $atts
+    );
+
+    $url = Settings::getUrl();
+    $eventsCount = $atts_with_overriden_defaults['events-count'];
+    $groupName = $atts_with_overriden_defaults['group-name'];
+
+    ob_start();
+    try {
+      if ($groupName) {
+        $events = GraphQlClient::get_upcoming_events_by_group_name($url, (int) $eventsCount, $groupName);
+      } else {
+        $events = GraphQlClient::get_upcoming_events($url, (int) $eventsCount);
+      }
+
+      $classNamePrefix = NAME;
+      $locale = get_locale();
+      $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
+      $timeZone = wp_timezone_string();
+
+      require dirname(__DIR__) . '/view/events-list.php';
+    } catch (GeneralException $e) {
+      require dirname(__DIR__) . '/view/events-list-not-loaded.php';
+    } catch (GroupNotFoundException $e) {
+      require dirname(__DIR__) . '/view/events-list-group-not-found.php';
+    }
+    $output = ob_get_clean();
+    return $output;
+  }
+}