add xml sitemap

app/Http/Controllers/SitemapController.php

@@ -0,0 +1,125 @@
+<?php
+
+
+namespace App\Http\Controllers;
+
+
+use App\Models\Table;
+use App\Models\User;
+use XMLWriter;
+
+class SitemapController extends Controller
+{
+    public function sitemap()
+    {
+        ob_end_clean();
+
+        // Redirect output to a client’s web browser
+        header("Content-Type: text/xml; charset=utf-8");
+        // Cache headers
+        header('Cache-Control: max-age=0');
+        // IE9
+        header('Cache-Control: max-age=1');
+        // Other IE headers
+        header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
+        header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); // always modified
+        header('Cache-Control: cache, must-revalidate'); // HTTP/1.1
+        header('Pragma: no-cache'); // HTTP/1.0
+
+        $xmlWriter = new XMLWriter();
+        $xmlWriter->openURI('php://output');
+        $xmlWriter->startDocument('1.0', 'UTF-8');
+        $xmlWriter->setIndent(true);
+        {
+            $xmlWriter->startElement('urlset');
+            {
+                $xmlWriter->writeAttribute('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');
+                foreach ($this->iterateTables() as $entry) {
+                    $xmlWriter->startElement('url');
+                    $xmlWriter->writeElement('loc', $entry->url);
+
+                    if (isset($entry->priority)) {
+                        $xmlWriter->writeElement('priority', $entry->priority);
+                    }
+
+                    if (isset($entry->changefreq)) {
+                        $xmlWriter->writeElement('changefreq', $entry->changefreq);
+                    }
+
+                    if (isset($entry->lastmodified)) {
+                        $xmlWriter->writeElement('lastmod', $entry->lastmodified->format(\DateTime::W3C));
+                    }
+                    $xmlWriter->endElement();
+                }
+            }
+            $xmlWriter->endElement();
+        }
+        $xmlWriter->endDocument();
+    }
+
+    private function iterateTables()
+    {
+        $prio_info = .9;
+        $prio_user = .8;
+        $prio_table = .6;
+        $prio_table_rev = .5;
+        $prio_misc = .5;
+
+        yield (object)[
+            'url' => route('dash'),
+            'priority' => 1,
+        ];
+
+        yield (object)[
+            'url' => route('terms'),
+            'priority' => $prio_info,
+        ];
+
+        yield (object)[
+            'url' => route('faq'),
+            'priority' => $prio_info,
+        ];
+
+        yield (object)[
+            'url' => route('donate'),
+            'priority' => $prio_info,
+        ];
+
+        yield (object)[
+            'url' => route('privacy'),
+            'priority' => $prio_info,
+        ];
+
+        yield (object)[
+            'url' => route('login'),
+            'priority' => $prio_misc,
+        ];
+
+        yield (object)[
+            'url' => route('register'),
+            'priority' => $prio_misc,
+        ];
+
+        foreach (User::all() as $user) {
+            yield (object)[
+                'url' => route('profile.view', $user->name),
+                'lastmodified' => $user->updated_at,
+                'priority' => $prio_user,
+            ];
+        }
+
+        foreach (Table::all() as $table) {
+            yield (object)[
+                'url' => $table->viewRoute,
+                'lastmodified' => $table->updated_at,
+                'priority' => $prio_table,
+            ];
+
+            yield (object)[
+                'url' => $table->revisionsRoute,
+                'lastmodified' => $table->updated_at,
+                'priority' => $prio_table_rev,
+            ];
+        }
+    }
+}

routes/web.php

@@ -3,6 +3,8 @@
 
 require "login.php";
 
+Route::get('/sitemap', 'SitemapController@sitemap')->name('sitemap');
+
 Route::get('/ping', function () {
     die(
         json_encode([