Dynamic OPML (#4407)

* Dynamic OPML draft
#fix https://github.com/FreshRSS/FreshRSS/issues/4191

* Export dynamic OPML
http://opml.org/spec2.opml#1629043127000

* Restart with simpler approach

* Minor revert

* Export dynamic OPML also for single feeds

* Special category type for importing dynamic OPML

* Parameter for excludeMutedFeeds

* Details

* More draft

* i18n

* Fix update

* Draft manual import working

* Working manual refresh

* Draft automatic update

* Working Web refresh + fixes

* Import/export dynamic OPML settings

* Annoying numerous lines in SQL logs

* Fix minor JavaScript error

* Fix auto adding new columns

* Add require

* Add missing 🗲

* Missing space

* Disable adding new feeds to dynamic categories

* Link from import

* i18n typo

* Improve theme icon function

* Fix pink-dark

1 files changed, 35 insertions, 6 deletions

diff --git a/app/Models/Themes.php b/app/Models/Themes.php
index ceaa49266..a59f4b663 100644
--- a/app/Models/Themes.php
+++ b/app/Models/Themes.php
@@ -68,6 +68,13 @@ class FreshRSS_Themes extends Minz_Model {
 		return $infos;
 	}
 
+	public static function title($name) {
+		static $titles = [
+			'opml-dyn' => 'sub.category.dynamic_opml',
+		];
+		return $titles[$name] ?? '';
+	}
+
 	public static function alt($name) {
 		static $alts = array(
 			'add' => '➕',	//✚
@@ -94,6 +101,7 @@ class FreshRSS_Themes extends Minz_Model {
 			'next' => '⏩',
 			'non-starred' => '☆',
 			'notice' => 'ℹ️',	//ⓘ
+			'opml-dyn' => '🗲',
 			'prev' => '⏪',
 			'read' => '☑️',	//☑
 			'rss' => '📣',	//☄
@@ -115,7 +123,13 @@ class FreshRSS_Themes extends Minz_Model {
 		return isset($name) ? $alts[$name] : '';
 	}
 
-	public static function icon($name, $urlOnly = false) {
+	// TODO: Change for enum in PHP 8.1+
+	const ICON_DEFAULT = 0;
+	const ICON_IMG = 1;
+	const ICON_URL = 2;
+	const ICON_EMOJI = 3;
+
+	public static function icon(string $name, int $type = self::ICON_DEFAULT): string {
 		$alt = self::alt($name);
 		if ($alt == '') {
 			return '';
@@ -124,14 +138,29 @@ class FreshRSS_Themes extends Minz_Model {
 		$url = $name . '.svg';
 		$url = isset(self::$themeIcons[$url]) ? (self::$themeIconsUrl . $url) : (self::$defaultIconsUrl . $url);
 
-		if ($urlOnly) {
-			return Minz_Url::display($url);
+		$title = self::title($name);
+		if ($title != '') {
+			$title = ' title="' . _t($title) . '"';
 		}
 
-		if (FreshRSS_Context::$user_conf && FreshRSS_Context::$user_conf->icons_as_emojis) {
-			return '<span class="icon">' . $alt . '</span>';
+		if ($type == self::ICON_DEFAULT) {
+			if ((FreshRSS_Context::$user_conf && FreshRSS_Context::$user_conf->icons_as_emojis) ||
+				// default to emoji alternate for some icons
+				in_array($name, [ 'opml-dyn' ])) {
+				$type = self::ICON_EMOJI;
+			} else {
+				$type = self::ICON_IMG;
+			}
 		}
 
-		return '<img class="icon" src="' . Minz_Url::display($url) . '" loading="lazy" alt="' . $alt . '" />';
+		switch ($type) {
+			case self::ICON_URL:
+				return Minz_Url::display($url);
+			case self::ICON_IMG:
+				return '<img class="icon" src="' . Minz_Url::display($url) . '" loading="lazy" alt="' . $alt . '"' . $title . ' />';
+			case self::ICON_EMOJI:
+			default:
+				return '<span class="icon"' . $title . '>' . $alt . '</span>';
+		}
 	}
 }