From 9c2fef6cf906042ca1454c16edd20c2ce55d007c Mon Sep 17 00:00:00 2001
From: oldkid <oldkid@sekretaerbaer.net>
Date: Wed, 23 Apr 2025 13:55:23 +0200
Subject: [PATCH] add invidious

---
 invidious/README.md              |   6 ++
 invidious/invidious.php          | 110 +++++++++++++++++++++++++++++++
 invidious/lang/C/messages.po     |  58 ++++++++++++++++
 invidious/templates/admin.tpl    |   5 ++
 invidious/templates/settings.tpl |   2 +
 5 files changed, 181 insertions(+)
 create mode 100644 invidious/README.md
 create mode 100644 invidious/invidious.php
 create mode 100644 invidious/lang/C/messages.po
 create mode 100644 invidious/templates/admin.tpl
 create mode 100644 invidious/templates/settings.tpl

diff --git a/invidious/README.md b/invidious/README.md
new file mode 100644
index 0000000..f5fa08c
--- /dev/null
+++ b/invidious/README.md
@@ -0,0 +1,6 @@
+invidious Addon for Friendica
+==========================
+
+This addon will replace "youtube.com" with the chosen Invidious instance
+
+These addons are not intended to be used on productive systems. The use of these addons is at your own risk.
diff --git a/invidious/invidious.php b/invidious/invidious.php
new file mode 100644
index 0000000..59899ca
--- /dev/null
+++ b/invidious/invidious.php
@@ -0,0 +1,110 @@
+<?php
+/*
+ * Name: invidious
+ * Description: Replaces links to youtube.com to an invidious instance in all displays of postings on a node.
+ * Version: 0.7
+ * Author: Matthias Ebers <https://loma.ml/profile/feb>
+ * Author: Michael Vogel <https://pirati.ca/profile/heluecht>
+ * Status:
+ * Note: Please use the URL Replace addon instead
+ */
+
+use Friendica\Core\Hook;
+use Friendica\Core\Renderer;
+use Friendica\DI;
+
+CONST INVIDIOUS_DEFAULT = 'https://invidio.us';
+
+function invidious_install()
+{
+	Hook::register('prepare_body_final',  __FILE__, 'invidious_render');
+	Hook::register('addon_settings',      __FILE__, 'invidious_settings');
+	Hook::register('addon_settings_post', __FILE__, 'invidious_settings_post');
+}
+
+/* Handle the send data from the admin settings
+ */
+function invidious_addon_admin_post()
+{
+	// Sanitize and validate the input as a valid URL
+	$url = filter_var(trim($_POST['invidiousserver'], " \n\r\t\v\x00/"), FILTER_VALIDATE_URL);
+	if ($url !== false) {
+		DI::config()->set('invidious', 'server', $url);
+	}
+}
+
+/* Hook into the admin settings to let the admin choose an
+ * invidious server to use for the replacement.
+ */
+function invidious_addon_admin(string &$o)
+{
+	$invidiousserver = DI::config()->get('invidious', 'server', INVIDIOUS_DEFAULT);
+	$t = Renderer::getMarkupTemplate('admin.tpl', 'addon/invidious/');
+	$o = Renderer::replaceMacros($t, [
+		'$settingdescription' => DI::l10n()->t('Which Invidious server shall be used for the replacements in the post bodies? Use the URL with servername and protocol. See %s for a list of available public Invidious servers.', 'https://redirect.invidious.io'),
+		'$invidiousserver'    => ['invidiousserver', DI::l10n()->t('Invidious server'), $invidiousserver, DI::l10n()->t('See %s for a list of available Invidious servers.', '<a href="https://api.invidious.io/">https://api.invidious.io/</a>')],
+		'$submit'             => DI::l10n()->t('Save Settings'),
+	]);
+}
+
+function invidious_settings(array &$data)
+{
+	if (!DI::userSession()->getLocalUserId()) {
+		return;
+	}
+
+	$enabled = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'invidious', 'enabled');
+	$server  = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'invidious', 'server', DI::config()->get('invidious', 'server', INVIDIOUS_DEFAULT));
+
+	$t    = Renderer::getMarkupTemplate('settings.tpl', 'addon/invidious/');
+	$html = Renderer::replaceMacros($t, [
+		'$enabled' => ['enabled', DI::l10n()->t('Replace Youtube links with links to an Invidious server'), $enabled, DI::l10n()->t('If enabled, Youtube links are replaced with the links to the specified Invidious server.')],
+		'$server'  => ['server', DI::l10n()->t('Invidious server'), $server, DI::l10n()->t('See %s for a list of available Invidious servers.', '<a href="https://api.invidious.io/">https://api.invidious.io/</a>')],
+	]);
+
+	$data = [
+		'addon' => 'invidious',
+		'title' => DI::l10n()->t('Invidious Settings'),
+		'html'  => $html,
+	];
+}
+
+function invidious_settings_post(array &$b)
+{
+	if (!DI::userSession()->getLocalUserId() || empty($_POST['invidious-submit'])) {
+		return;
+	}
+
+	DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'invidious', 'enabled', (bool)$_POST['enabled']);
+
+	$server = trim($_POST['server'], " \n\r\t\v\x00/");
+	// Sanitize and validate the server URL before saving
+	$validatedServer = filter_var($server, FILTER_VALIDATE_URL);
+	if ($validatedServer !== false && $validatedServer != DI::config()->get('invidious', 'server', INVIDIOUS_DEFAULT)) {
+		DI::pConfig()->set(DI::userSession()->getLocalUserId(), 'invidious', 'server', $validatedServer);
+	} else {
+		DI::pConfig()->delete(DI::userSession()->getLocalUserId(), 'invidious', 'server');
+	}
+}
+
+/*
+ *  replace "youtube.com" with the chosen Invidious instance
+ */
+function invidious_render(array &$b)
+{
+	if (!DI::userSession()->getLocalUserId() || !DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'invidious', 'enabled')) {
+		return;
+	}
+
+	$original = $b['html'];
+	$server   = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'invidious', 'server', DI::config()->get('invidious', 'server', INVIDIOUS_DEFAULT));
+
+	// Use optimized regex to replace different YouTube URL formats
+	$b['html'] = preg_replace("~https?://(?:www\.|m\.)?youtube\.com/(watch|embed|shorts)\?v=([a-zA-Z0-9_-]+)~ism", $server . '/$1?v=$2', $b['html']);
+	$b['html'] = preg_replace("~https?://(?:music\.)?youtube\.com/watch\?v=([a-zA-Z0-9_-]+)~ism", $server . '/watch?v=$1', $b['html']);
+	$b['html'] = preg_replace("~https?://?youtu\.be/([a-zA-Z0-9_-]+)~ism", $server . '/watch?v=$1', $b['html']);
+
+	if ($original != $b['html']) {
+		$b['html'] .= '<hr><p><small class="invidious-note">' . DI::l10n()->t('(Invidious addon enabled: YouTube links via %s)', $server) . '</small></p>';
+	}
+}
diff --git a/invidious/lang/C/messages.po b/invidious/lang/C/messages.po
new file mode 100644
index 0000000..b9de496
--- /dev/null
+++ b/invidious/lang/C/messages.po
@@ -0,0 +1,58 @@
+# ADDON invidious
+# Copyright (C) 
+# This file is distributed under the same license as the Friendica invidious addon package.
+# 
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2023-12-18 17:23+0000\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: invidious.php:39
+#, php-format
+msgid ""
+"Which Invidious server shall be used for the replacements in the post "
+"bodies? Use the URL with servername and protocol. See %s for a list of "
+"available public Invidious servers."
+msgstr ""
+
+#: invidious.php:40 invidious.php:57
+msgid "Invidious server"
+msgstr ""
+
+#: invidious.php:40 invidious.php:57
+#, php-format
+msgid "See %s for a list of available Invidious servers."
+msgstr ""
+
+#: invidious.php:41
+msgid "Save Settings"
+msgstr ""
+
+#: invidious.php:56
+msgid "Replace Youtube links with links to an Invidious server"
+msgstr ""
+
+#: invidious.php:56
+msgid ""
+"If enabled, Youtube links are replaced with the links to the specified "
+"Invidious server."
+msgstr ""
+
+#: invidious.php:62
+msgid "Invidious Settings"
+msgstr ""
+
+#: invidious.php:101
+#, php-format
+msgid "(Invidious addon enabled: YouTube links via %s)"
+msgstr ""
diff --git a/invidious/templates/admin.tpl b/invidious/templates/admin.tpl
new file mode 100644
index 0000000..1db85ff
--- /dev/null
+++ b/invidious/templates/admin.tpl
@@ -0,0 +1,5 @@
+<p>{{$settingdescription}}</p>
+
+{{include file="field_input.tpl" field=$invidiousserver}}
+
+<div class="submit"><input type="submit" name="page_site" value="{{$submit}}" /></div>
diff --git a/invidious/templates/settings.tpl b/invidious/templates/settings.tpl
new file mode 100644
index 0000000..387286e
--- /dev/null
+++ b/invidious/templates/settings.tpl
@@ -0,0 +1,2 @@
+{{include file="field_checkbox.tpl" field=$enabled}}
+{{include file="field_input.tpl" field=$server}}