Added IzzyOnDroid App Source

+ Bugfix for third party APK URL support
+ F-Droid apps have F-Droid as Author now

lib/providers/source_provider.dart

@@ -296,8 +296,7 @@ class FDroid implements AppSource {
 
   @override
   AppNames getAppNames(String standardUrl) {
-    var name = Uri.parse(standardUrl).pathSegments.last;
-    return AppNames(name, name);
+    return AppNames('F-Droid', Uri.parse(standardUrl).pathSegments.last);
   }
 }
 
@@ -341,8 +340,69 @@ class Mullvad implements AppSource {
   }
 }
 
+class IzzyOnDroid implements AppSource {
+  @override
+  late String host = 'android.izzysoft.de';
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/repo/apk/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw notValidURL;
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(String standardUrl) async {
+    Response res = await get(Uri.parse(standardUrl));
+    if (res.statusCode == 200) {
+      var parsedHtml = parse(res.body);
+      var multipleVersionApkUrls = parsedHtml
+          .querySelectorAll('a')
+          .where((element) =>
+              element.attributes['href']?.toLowerCase().endsWith('.apk') ??
+              false)
+          .map((e) => 'https://$host${e.attributes['href'] ?? ''}')
+          .toList();
+      if (multipleVersionApkUrls.isEmpty) {
+        throw noAPKFound;
+      }
+      var version = parsedHtml
+          .querySelector('#keydata')
+          ?.querySelectorAll('b')
+          .where(
+              (element) => element.innerHtml.toLowerCase().contains('version'))
+          .toList()[0]
+          .parentNode
+          ?.parentNode
+          ?.children[1]
+          .innerHtml;
+      if (version == null) {
+        throw couldNotFindLatestVersion;
+      }
+      return APKDetails(version, [multipleVersionApkUrls[0]]);
+    } else {
+      throw couldNotFindReleases;
+    }
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    return AppNames('IzzyOnDroid', Uri.parse(standardUrl).pathSegments.last);
+  }
+}
+
 class SourceProvider {
-  List<AppSource> sources = [GitHub(), GitLab(), FDroid(), Mullvad(), Signal()];
+  List<AppSource> sources = [
+    GitHub(),
+    GitLab(),
+    FDroid(),
+    Mullvad(),
+    Signal(),
+    IzzyOnDroid()
+  ];
 
   // Add more source classes here so they are available via the service
   AppSource getSource(String url) {