-

2026-07-03 07:31:09 -04:00
commit cebb0d3af1
800 changed files with 89782 additions and 0 deletions
@@ -0,0 +1,87 @@
+<?php
+
+class pluginCanonical extends Plugin {
+
+	public function siteHead()
+	{
+		global $url;
+		global $page;
+		global $WHERE_AM_I;
+
+		$html = '';
+		$canonical = '';
+
+		switch ($WHERE_AM_I) {
+			case 'home':
+				// Handle pagination on homepage
+				$pageNumber = $url->pageNumber();
+				if ($pageNumber > 1) {
+					$canonical = DOMAIN_BASE . 'page/' . $pageNumber . '/';
+				} else {
+					$canonical = DOMAIN_BASE;
+				}
+				break;
+
+			case 'page':
+				$canonical = $page->permalink($absolute = true);
+				break;
+
+			case 'category':
+				// Category pages
+				$categoryKey = $url->slug();
+				$canonical = DOMAIN_CATEGORIES . $categoryKey . '/';
+				$pageNumber = $url->pageNumber();
+				if ($pageNumber > 1) {
+					$canonical .= 'page/' . $pageNumber . '/';
+				}
+				break;
+
+			case 'tag':
+				// Tag pages
+				$tagKey = $url->slug();
+				$canonical = DOMAIN_TAGS . $tagKey . '/';
+				$pageNumber = $url->pageNumber();
+				if ($pageNumber > 1) {
+					$canonical .= 'page/' . $pageNumber . '/';
+				}
+				break;
+
+			default:
+				// For any other page type, use current URI
+				$canonical = DOMAIN_BASE . ltrim($url->uri(), '/');
+				break;
+		}
+
+		if (!empty($canonical)) {
+			$html .= '<link rel="canonical" href="' . htmlspecialchars($canonical, ENT_QUOTES, 'UTF-8') . '">' . PHP_EOL;
+
+			// Add prev/next for paginated content (helps search engines)
+			$pageNumber = $url->pageNumber();
+			if ($pageNumber > 1) {
+				// Previous page
+				if ($pageNumber === 2) {
+					$prevUrl = preg_replace('/page\/\d+\/?$/', '', $canonical);
+				} else {
+					$prevUrl = preg_replace('/page\/\d+\/?$/', 'page/' . ($pageNumber - 1) . '/', $canonical);
+				}
+				$html .= '<link rel="prev" href="' . htmlspecialchars($prevUrl, ENT_QUOTES, 'UTF-8') . '">' . PHP_EOL;
+			}
+
+			// Next page (only if more content exists)
+			// This requires checking if there's a next page of content
+			global $content;
+			global $site;
+			if (isset($content) && is_array($content) && count($content) >= $site->itemsPerPage()) {
+				$nextUrl = preg_replace('/page\/\d+\/?$/', '', $canonical);
+				if ($pageNumber < 1) {
+					$nextUrl .= 'page/2/';
+				} else {
+					$nextUrl = preg_replace('/page\/\d+\/?$/', 'page/' . ($pageNumber + 1) . '/', $canonical);
+				}
+				$html .= '<link rel="next" href="' . htmlspecialchars($nextUrl, ENT_QUOTES, 'UTF-8') . '">' . PHP_EOL;
+			}
+		}
+
+		return $html;
+	}
+}