Add admin/themes/{theme}/embed module

- This module allows editing the site settings for a theme with a different user theme

src/App/Router.php

@@ -133,6 +133,7 @@ class Router
 			$collector->addRoute(['GET']        , '/queue[/deferred]'       , Module\Admin\Queue::class);
 
 			$collector->addRoute(['GET', 'POST'], '/themes'                 , Module\Admin\Themes\Index::class);
+			$collector->addRoute(['GET', 'POST'], '/themes/{theme}/embed'   , Module\Admin\Themes\Embed::class);
 
 			$collector->addRoute(['GET', 'POST'], '/tos'                    , Module\Admin\Tos::class);
 

src/Module/Admin/Themes/Embed.php

@@ -0,0 +1,92 @@
+<?php
+
+namespace Friendica\Module\Admin\Themes;
+
+use Friendica\Core\L10n;
+use Friendica\Core\Renderer;
+use Friendica\Core\System;
+use Friendica\Core\Theme;
+use Friendica\Module\BaseAdminModule;
+use Friendica\Util\Strings;
+
+class Embed extends BaseAdminModule
+{
+	public static function init()
+	{
+		$a = self::getApp();
+
+		if ($a->argc > 2) {
+			// @TODO: Replace with parameter from router
+			$theme = $a->argv[2];
+			$theme = Strings::sanitizeFilePathItem($theme);
+			if (is_file("view/theme/$theme/config.php")) {
+				$a->setCurrentTheme($theme);
+			}
+		}
+	}
+
+	public static function post()
+	{
+		parent::post();
+
+		$a = self::getApp();
+
+		if ($a->argc > 2) {
+			// @TODO: Replace with parameter from router
+			$theme = $a->argv[2];
+			$theme = Strings::sanitizeFilePathItem($theme);
+			if (is_file("view/theme/$theme/config.php")) {
+				self::checkFormSecurityTokenRedirectOnError('/admin/themes/' . $theme . '/embed?mode=minimal', 'admin_theme_settings');
+
+				require_once "view/theme/$theme/config.php";
+
+				if (function_exists('theme_admin_post')) {
+					theme_admin_post($a);
+				}
+			}
+
+			info(L10n::t('Theme settings updated.'));
+
+			if ($a->isAjax()) {
+				return;
+			}
+
+			$a->internalRedirect('admin/themes/' . $theme . '/embed?mode=minimal');
+		}
+	}
+
+	public static function content()
+	{
+		parent::content();
+
+		$a = self::getApp();
+
+		if ($a->argc > 2) {
+			// @TODO: Replace with parameter from router
+			$theme = $a->argv[2];
+			$theme = Strings::sanitizeFilePathItem($theme);
+			if (!is_dir("view/theme/$theme")) {
+				notice(L10n::t('Unknown theme.'));
+				return '';
+			}
+
+			$admin_form = '';
+			if (is_file("view/theme/$theme/config.php")) {
+				require_once "view/theme/$theme/config.php";
+
+				if (function_exists('theme_admin')) {
+					$admin_form = theme_admin($a);
+				}
+			}
+
+			$t = Renderer::getMarkupTemplate('admin/addons/embed.tpl');
+			return Renderer::replaceMacros($t, [
+				'$action' => '/admin/themes/' . $theme . '/embed?mode=minimal',
+				'$form' => $admin_form,
+				'$form_security_token' => parent::getFormSecurityToken("admin_theme_settings"),
+			]);
+		}
+
+		return '';
+	}
+}

view/templates/admin/addons/embed.tpl

@@ -0,0 +1,5 @@
+
+<form method="post" action="{{$action}}">
+    <input type="hidden" name="form_security_token" value="{{$form_security_token}}">
+	{{$form nofilter}}
+</form>