hackish incomplete cached feed reader

lib/ComicPage.php

@@ -0,0 +1,15 @@
+<?php
+declare(strict_types = 1);
+
+class ComicPage {
+    public string $href = '';
+    public string $pageNo = '';
+    public string $title = '';
+    public string $imageUrl = '';
+    
+    function __construct() {}
+    function __toString() {
+        return "[{$this->href}] [{$this->imageUrl}] {$this->pageNo} // {$this->title}";
+    }
+};
+

lib/fetch-site-content.php

@@ -3,22 +3,13 @@ declare(strict_types = 1);
 
 include_once('config/default.php');
 
+include_once('lib/ComicPage.php');
 include_once('lib/log.php');
 include_once('lib/fetch-url.php');
 
-class ComicPage {
-    public string $href = '';
-    public string $pageNo = '';
-    public string $title = '';
-    public string $imageUrl = '';
-    
-    function __construct() {}
-    function __toString() {
-        return "[{$this->href}] [{$this->imageUrl}] {$this->pageNo} // {$this->title}";
-    }
-};
-
-function fetchSiteContent() {
+// i don't know why i'm trying to use php's pathetic excuse for a type
+// system lol
+function fetchSiteContent(array $knownLinks) {
     $comicPages = array();
 
     $archivePage = fetchUrl(Config::archiveUrl);
@@ -33,6 +24,11 @@ function fetchSiteContent() {
             $link->href = Config::baseUrl . "/" . $el->href;
             $link->pageNo = $el->innerText;
 
+            if (in_array($link->href, $knownLinks)) {
+                Log::info("Skipping known link {$link->href}");
+                continue;
+            };
+
             // we'll get the image URL from this later, but fetch it early
             // in order to check that the page exists; if not, we'll
             // exclude it from the feed

lib/read-feed.php

@@ -0,0 +1,31 @@
+<?php
+declare(strict_types = 1);
+
+include_once('lib/log.php');
+include_once('lib/ComicPage.php');
+
+function getKnownItemsFromFeed($feedPath) {
+    $feed = simplexml_load_file($feedPath);
+    $knownItems = array();
+    
+    if (!$feed) {
+        Log::warn("Failed to load existing feed from {$feedPath} - rebuilding");
+        return array();
+    };
+
+    $items = $feed->xpath('//item/link');
+    foreach ($items as $item) {
+        $known = new ComicPage;
+        $known->href = $item->link;
+        $known->pageNo = 
+    };
+    
+    // $links = $feed->xpath('//item/link');
+    // return array_unique(
+    //     array_map(function ($el) {
+    //         return strip_tags($el->asXML());
+    //     }, $links)
+    // );
+
+    return $knownItems;
+};

rssmonster.php

@@ -11,8 +11,10 @@ include_once('config/default.php');
 
 include_once('lib/log.php');
 include_once('lib/fetch-site-content.php');
+include_once('lib/read-feed.php');
 include_once('lib/generate-feed.php');
 
+$knownPages = readFeed(Config::feedPath);
 $content = fetchSiteContent();
 $feedXml = generateFeed(array_reverse($content));