add reading history to /about

www/internals/modules/ebookhistory.php

@@ -0,0 +1,36 @@
+<?php
+
+class EbookHistory implements IWebsiteModule
+{
+    /** @var Website */
+    private $site;
+
+    public function __construct(Website $site)
+    {
+        $this->site = $site;
+    }
+
+    public function dir(): string
+    {
+        return __DIR__ . '/../../dynamic/ehr/';
+    }
+
+    public function checkConsistency(): array
+    {
+        $fn = $this->dir().'/snippet.html';
+
+        if (!file_exists($fn)) return ['result'=>'err', 'message' => 'File not found: ' . $fn];
+
+        if (filemtime($fn) < time()-(10*24*60*60)) return ['result'=>'warn', 'message' => 'Rendered data is older than 10 days'];
+
+        return ['result' => 'ok', 'message' => ''];
+    }
+
+    public function get(): string
+    {
+        $fn = $this->dir().'/snippet.html';
+        if (!file_exists($fn)) return '';
+
+        return file_get_contents($fn);
+    }
+}