From e8106abb8006f5e60e1f2d42621c64ae3d78e372 Mon Sep 17 00:00:00 2001
From: winter
Date: Sun, 26 Jan 2025 16:24:10 +0000
Subject: infinite scroll

---
 routes/timelines.php | 44 +++++++++++++++++++++++++++-----------------
 1 file changed, 27 insertions(+), 17 deletions(-)

(limited to 'routes/timelines.php')

diff --git a/routes/timelines.php b/routes/timelines.php
index f70c0d6..8bd2873 100644
--- a/routes/timelines.php
+++ b/routes/timelines.php
@@ -1,30 +1,40 @@
 <?php
 
 use Digitigrade\HttpResponseStatus\BadRequest;
-use Digitigrade\HttpResponseStatus\TemporaryRedirect;
 use Digitigrade\Model\UserAccount;
 use Digitigrade\Router;
 use Digitigrade\Timeline\GlobalTimeline;
 use Digitigrade\Timeline\HomeTimeline;
 use Digitigrade\Timeline\LocalTimeline;
 
-Router::getInstance()->mount('/feed/global', function (array $args) {
-    $items = (new GlobalTimeline())->getPage();
-    render_template('timeline', ['kind' => 'global', 'items' => $items]);
-});
-
-Router::getInstance()->mount('/feed/local', function (array $args) {
-    $items = (new LocalTimeline())->getPage();
-    render_template('timeline', ['kind' => 'local', 'items' => $items]);
-});
-
-Router::getInstance()->mount('/feed/home', function (array $args) {
-    $user = UserAccount::findByCurrentSession();
-    if ($user == null) {
-        throw new TemporaryRedirect('/feed/global');
+Router::getInstance()->mount('/feed/:kind', function (array $args) {
+    /** @var \Digitigrade\Timeline\Timeline $provider */
+    $provider = match ($args['kind']) {
+        'global' => new GlobalTimeline(),
+        'local' => new LocalTimeline(),
+        'home' => new HomeTimeline(UserAccount::requireByCurrentSession())
+    };
+    $page = $_GET['page'] ?? 0;
+    $items = $provider->getPage($page);
+    if (isset($_GET['infinite'])) {
+        // infinite scroll update
+        if (count($items) > 0) {
+            foreach ($items as $item) {
+                $item->getReason()?->renderAsHtml();
+                $item->getObject()->renderAsHtml();
+            }
+            render_template('infinite_scroll_trigger', [
+                'kind' => $args['kind'],
+                'isUpdate' => true,
+                'nextPage' => $page + 1
+            ]);
+        } else {
+            render_template('infinite_scroll_trigger', ['isEnd' => true]);
+        }
+    } else {
+        // regular timeline page
+        render_template('timeline', ['kind' => $args['kind'], 'items' => $items]);
     }
-    $items = (new HomeTimeline($user))->getPage();
-    render_template('timeline', ['kind' => 'home', 'items' => $items]);
 });
 
 Router::getInstance()->mount('/feed/home/partial', function (array $args) {
-- 
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