1 files changed, 104 insertions, 0 deletions
diff --git a/bootstrap/comments/backend/classes/metadata.php b/bootstrap/comments/backend/classes/metadata.php
new file mode 100644
index 0000000..4619ba8
--- /dev/null
+++ b/bootstrap/comments/backend/classes/metadata.php
@@ -0,0 +1,104 @@
+<?php namespace HashOver;
+
+// Copyright (C) 2018 Jacob Barkdull
+// This file is part of HashOver.
+//
+// HashOver is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// HashOver is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with HashOver.  If not, see <http://www.gnu.org/licenses/>.
+
+
+class Metadata
+{
+	public $setup;
+	public $thread;
+	public $data;
+
+	public function __construct (Setup $setup, Thread $thread)
+	{
+		$this->setup = $setup;
+		$this->thread = $thread;
+		$this->data = $thread->data;
+	}
+
+	protected function prependLatestComments ($file, $global = false)
+	{
+		// Add thread to file if metadata is global
+		if ($global === true) {
+			$file = $this->setup->threadName . '/' . $file;
+		}
+
+		// Initial latest comments metadata array
+		$latest = array ($file);
+
+		// Attempt to read existing latest comments metadata
+		$metadata = $this->data->readMeta ('latest-comments', 'auto', $global);
+
+		// Check if latest comments metadata read successfully
+		if ($metadata !== false) {
+			// If so, merge existing comments with initial array
+			$latest = array_merge ($latest, $metadata);
+		}
+
+		// Maximum number of latest comments to store
+		$latest_max = max (10, $this->setup->latestMax);
+
+		// Limit latest comments metadata array to configurable size
+		$latest = array_slice ($latest, 0, $latest_max);
+
+		// Attempt to save latest comments metadata
+		$this->data->saveMeta ('latest-comments', $latest, 'auto', $global);
+	}
+
+	protected function spliceLatestComments ($file, $global = false)
+	{
+		// Add thread to file if metadata is global
+		if ($global === true) {
+			$file = $this->setup->threadName . '/' . $file;
+		}
+
+		// Attempt to read existing latest comments metadata
+		$latest = $this->data->readMeta ('latest-comments', 'auto', $global);
+
+		// Check if latest comments metadata read successfully
+		if ($latest !== false) {
+			$index = array_search ($file, $latest);
+
+			// Check if the comment is in the latest array
+			if ($index !== false) {
+				// If so, remove it from the array
+				array_splice ($latest, $index, 1);
+			}
+
+			// Attempt to save latest comments metadata
+			$this->data->saveMeta ('latest-comments', $latest, 'auto', $global);
+		}
+	}
+
+	public function addLatestComment ($file)
+	{
+		// Add comment to thread-specific latest comments metadata
+		$this->prependLatestComments ($file);
+
+		// Add comment to global latest comments metadata
+		$this->prependLatestComments ($file, true);
+	}
+
+	public function removeFromLatest ($file)
+	{
+		// Add comment to thread-specific latest comments metadata
+		$this->spliceLatestComments ($file);
+
+		// Add comment to global latest comments metadata
+		$this->spliceLatestComments ($file, true);
+	}
+}