WIP on adding feed items (#4)

src/lib/Feed.php

@@ -52,6 +52,40 @@ class Feed {
         return $result;
     }
 
+    /**
+     * Update a feed's items
+     * @param int $feedId The ID of the feed to which these items belong
+     * @param SimpleXMLElement $channel The RSS feed items
+     * @return array [ 'ok' => true ] if successful, [ 'error' => message ] if not
+     */
+    public static function updateItems(int $feedId, SimpleXMLElement $channel): array {
+        try {
+            for ($i = 0; $i < sizeof($channel->item); $i++) {
+                $item = $channel->item[$i];
+                $itemGuid = (string)$item->guid ? $item->guid : $item->link;
+                $isNew = !Data::itemExists($feedId, $itemGuid);
+                if ($isNew) {
+                    $title = (string)$item->title;
+                    $link = (string)$item->link;
+                    $published = (string)$item->pubDate;
+                    // TODO: why is this getting all encoded content, and not just the one for the current item?
+                    $encodedContent = $item->xpath('//content:encoded');
+                    if ($encodedContent) {
+                        $content = (string) $encodedContent[$i];
+                        $isEncoded = true;
+                    } else {
+                        $content = $item->description;
+                        $isEncoded = false;
+                    }
+                    Data::addItem($feedId, $itemGuid, $link, $title, $published, $content, $isEncoded);
+                } // TODO: else check updated date; may want to return that from the isNew check instead
+            }
+        } catch (Exception $ex) {
+            return [ 'error' => $ex->getMessage() ];
+        }
+        return [ 'ok', true ];
+    }
+
     /**
      * Add an RSS feed
      * @param string $url The URL of the RSS feed to add
@@ -64,6 +98,9 @@ class Feed {
         $channel = $feed['ok']->channel;
         $feedId = Data::addFeed($feed['url'], (string) $channel->title, (string) $channel->lastBuildDate);
 
+        $result = self::updateItems($feedId, $channel);
+        if (array_key_exists('error', $result)) return $result;
+
         return [ 'ok' => true ];
     }
 }