Updated version

Still no auto retry for rate-limit. Instead, rate-limit errors are ignored and the unchecked Apps have to wait until the next cycle. Even this needs more testing before release.

lib/app_sources/fdroid.dart

@@ -9,8 +9,14 @@ class FDroid implements AppSource {
 
   @override
   String standardizeURL(String url) {
-    RegExp standardUrlRegEx = RegExp('^https?://$host/[^/]+/packages/[^/]+');
+    RegExp standardUrlRegExB =
-    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+        RegExp('^https?://$host/+[^/]+/+packages/+[^/]+');
+    RegExpMatch? match = standardUrlRegExB.firstMatch(url.toLowerCase());
+    if (match != null) {
+      url = 'https://$host/packages/${Uri.parse(url).pathSegments.last}';
+    }
+    RegExp standardUrlRegExA = RegExp('^https?://$host/+packages/+[^/]+');
+    match = standardUrlRegExA.firstMatch(url.toLowerCase());
     if (match == null) {
       throw notValidURL(runtimeType.toString());
     }
@@ -54,4 +60,7 @@ class FDroid implements AppSource {
 
   @override
   List<String> additionalDataDefaults = [];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [];
 }

lib/app_sources/github.dart

@@ -1,7 +1,11 @@
 import 'dart:convert';
+import 'package:flutter/material.dart';
 import 'package:http/http.dart';
 import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/settings_provider.dart';
 import 'package:obtainium/providers/source_provider.dart';
+import 'package:url_launcher/url_launcher_string.dart';
 
 class GitHub implements AppSource {
   @override
@@ -17,6 +21,14 @@ class GitHub implements AppSource {
     return url.substring(0, match.end);
   }
 
+  Future<String> getCredentialPrefixIfAny() async {
+    SettingsProvider settingsProvider = SettingsProvider();
+    await settingsProvider.initializeSettings();
+    String? creds =
+        settingsProvider.getSettingString(moreSourceSettingsFormItems[0].id);
+    return creds != null && creds.isNotEmpty ? '$creds@' : '';
+  }
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {
@@ -28,7 +40,7 @@ class GitHub implements AppSource {
         ? additionalData[2]
         : null;
     Response res = await get(Uri.parse(
-        'https://api.$host/repos${standardUrl.substring('https://$host'.length)}/releases'));
+        'https://${await getCredentialPrefixIfAny()}api.$host/repos${standardUrl.substring('https://$host'.length)}/releases'));
     if (res.statusCode == 200) {
       var releases = jsonDecode(res.body) as List<dynamic>;
 
@@ -76,7 +88,10 @@ class GitHub implements AppSource {
       return APKDetails(version, targetRelease['apkUrls']);
     } else {
       if (res.headers['x-ratelimit-remaining'] == '0') {
-        throw 'Rate limit reached - try again in ${(int.parse(res.headers['x-ratelimit-reset'] ?? '1800000000') / 60000000).toString()} minutes';
+        throw RateLimitError(
+            (int.parse(res.headers['x-ratelimit-reset'] ?? '1800000000') /
+                    60000000)
+                .round());
       }
 
       throw couldNotFindReleases;
@@ -120,4 +135,43 @@ class GitHub implements AppSource {
 
   @override
   List<String> additionalDataDefaults = ['true', 'true', ''];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [
+    GeneratedFormItem(
+        label: 'GitHub Personal Access Token (Increases Rate Limit)',
+        id: 'github-creds',
+        required: false,
+        additionalValidators: [
+          (value) {
+            if (value != null && value.trim().isNotEmpty) {
+              if (value
+                      .split(':')
+                      .where((element) => element.trim().isNotEmpty)
+                      .length !=
+                  2) {
+                return 'PAT must be in this format: username:token';
+              }
+            }
+            return null;
+          }
+        ],
+        hint: 'username:token',
+        belowWidgets: [
+          const SizedBox(
+            height: 8,
+          ),
+          GestureDetector(
+              onTap: () {
+                launchUrlString(
+                    'https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token',
+                    mode: LaunchMode.externalApplication);
+              },
+              child: const Text(
+                'About GitHub PATs',
+                style: TextStyle(
+                    decoration: TextDecoration.underline, fontSize: 12),
+              ))
+        ])
+  ];
 }

lib/app_sources/gitlab.dart

@@ -68,4 +68,7 @@ class GitLab implements AppSource {
 
   @override
   List<String> additionalDataDefaults = [];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [];
 }

lib/app_sources/izzyondroid.dart

@@ -62,4 +62,7 @@ class IzzyOnDroid implements AppSource {
 
   @override
   List<String> additionalDataDefaults = [];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [];
 }

lib/app_sources/mullvad.dart

@@ -48,4 +48,7 @@ class Mullvad implements AppSource {
 
   @override
   List<String> additionalDataDefaults = [];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [];
 }

lib/app_sources/signal.dart

@@ -41,4 +41,7 @@ class Signal implements AppSource {
 
   @override
   List<String> additionalDataDefaults = [];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [];
 }

lib/app_sources/sourceforge.dart

@@ -65,4 +65,7 @@ class SourceForge implements AppSource {
 
   @override
   List<String> additionalDataDefaults = [];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [];
 }

lib/components/generated_form.dart

@@ -10,13 +10,19 @@ class GeneratedFormItem {
   late bool required;
   late int max;
   late List<String? Function(String? value)> additionalValidators;
+  late String id;
+  late List<Widget> belowWidgets;
+  late String? hint;
 
   GeneratedFormItem(
       {this.label = 'Input',
       this.type = FormItemType.string,
       this.required = true,
       this.max = 1,
-      this.additionalValidators = const []});
+      this.additionalValidators = const [],
+      this.id = 'input',
+      this.belowWidgets = const [],
+      this.hint});
 }
 
 class GeneratedForm extends StatefulWidget {
@@ -89,7 +95,8 @@ class _GeneratedFormState extends State<GeneratedForm> {
               });
             },
             decoration: InputDecoration(
-                helperText: e.value.label + (e.value.required ? ' *' : '')),
+                helperText: e.value.label + (e.value.required ? ' *' : ''),
+                hintText: e.value.hint),
             minLines: e.value.max <= 1 ? null : e.value.max,
             maxLines: e.value.max <= 1 ? 1 : e.value.max,
             validator: (value) {
@@ -155,7 +162,13 @@ class _GeneratedFormState extends State<GeneratedForm> {
             width: 20,
           ));
         }
-        rowItems.add(Expanded(child: rowInput.value));
+        rowItems.add(Expanded(
+            child: Column(
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+              rowInput.value,
+              ...widget.items[rowInputs.key][rowInput.key].belowWidgets
+            ])));
       });
       rows.add(rowItems);
     });

lib/custom_errors.dart

@@ -0,0 +1,8 @@
+class RateLimitError {
+  late int remainingMinutes;
+  RateLimitError(this.remainingMinutes);
+
+  @override
+  String toString() =>
+      'Too many requests (rate limited) - try again in $remainingMinutes minutes';
+}

lib/main.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:obtainium/app_sources/github.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/pages/home.dart';
 import 'package:obtainium/providers/apps_provider.dart';
 import 'package:obtainium/providers/notifications_provider.dart';
@@ -13,47 +14,75 @@ import 'package:dynamic_color/dynamic_color.dart';
 import 'package:device_info_plus/device_info_plus.dart';
 
 const String currentReleaseTag =
-    'v0.4.0-beta'; // KEEP THIS IN SYNC WITH GITHUB RELEASES
+    'v0.5.2-beta'; // KEEP THIS IN SYNC WITH GITHUB RELEASES
+
+const String bgUpdateCheckTaskName = 'bg-update-check';
+
+bgUpdateCheck(int? ignoreAfterMicroseconds) async {
+  DateTime? ignoreAfter = ignoreAfterMicroseconds != null
+      ? DateTime.fromMicrosecondsSinceEpoch(ignoreAfterMicroseconds)
+      : null;
+  var notificationsProvider = NotificationsProvider();
+  await notificationsProvider.notify(checkingUpdatesNotification);
+  try {
+    var appsProvider = AppsProvider();
+    await notificationsProvider.cancel(ErrorCheckingUpdatesNotification('').id);
+    await appsProvider.loadApps();
+    // List<String> existingUpdateIds = // TODO: Uncomment this and below when it works
+    //     appsProvider.getExistingUpdates(installedOnly: true);
+    List<String> existingUpdateIds =
+        appsProvider.getExistingUpdates(installedOnly: true);
+    DateTime nextIgnoreAfter = DateTime.now();
+    try {
+      await appsProvider.checkUpdates(ignoreAfter: ignoreAfter);
+    } catch (e) {
+      if (e is RateLimitError) {
+        String nextTaskName =
+            '$bgUpdateCheckTaskName-${nextIgnoreAfter.microsecondsSinceEpoch.toString()}';
+        Workmanager().registerOneOffTask(nextTaskName, nextTaskName,
+            constraints: Constraints(networkType: NetworkType.connected),
+            initialDelay: Duration(minutes: e.remainingMinutes),
+            inputData: {'ignoreAfter': nextIgnoreAfter.microsecondsSinceEpoch});
+      } else {
+        rethrow;
+      }
+    }
+    List<App> newUpdates = appsProvider
+        .getExistingUpdates(installedOnly: true)
+        .where((id) => !existingUpdateIds.contains(id))
+        .map((e) => appsProvider.apps[e]!.app)
+        .toList();
+    // List<String> silentlyUpdated = await appsProvider
+    //     .downloadAndInstallLatestApp(
+    //         [...newUpdates.map((e) => e.id), ...existingUpdateIds], null);
+    // if (silentlyUpdated.isNotEmpty) {
+    //   newUpdates
+    //       .where((element) => !silentlyUpdated.contains(element.id))
+    //       .toList();
+    //   notificationsProvider.notify(
+    //       SilentUpdateNotification(
+    //           silentlyUpdated.map((e) => appsProvider.apps[e]!.app).toList()),
+    //       cancelExisting: true);
+    // }
+    if (newUpdates.isNotEmpty) {
+      notificationsProvider.notify(UpdateNotification(newUpdates),
+          cancelExisting: true);
+    }
+    return Future.value(true);
+  } catch (e) {
+    notificationsProvider.notify(ErrorCheckingUpdatesNotification(e.toString()),
+        cancelExisting: true);
+    return Future.error(false);
+  } finally {
+    await notificationsProvider.cancel(checkingUpdatesNotification.id);
+  }
+}
 
 @pragma('vm:entry-point')
 void bgTaskCallback() {
-  // Background update checking process
+  // Background process callback
-  Workmanager().executeTask((task, taskName) async {
+  Workmanager().executeTask((task, inputData) async {
-    var notificationsProvider = NotificationsProvider();
+    return await bgUpdateCheck(inputData?['ignoreAfter']);
-    await notificationsProvider.notify(checkingUpdatesNotification);
-    try {
-      var appsProvider = AppsProvider();
-      await notificationsProvider
-          .cancel(ErrorCheckingUpdatesNotification('').id);
-      await appsProvider.loadApps();
-      // List<String> existingUpdateIds = // TODO: Uncomment this and below when it works
-      //     appsProvider.getExistingUpdates(installedOnly: true);
-      List<App> newUpdates = await appsProvider.checkUpdates();
-      // List<String> silentlyUpdated = await appsProvider
-      //     .downloadAndInstallLatestApp(
-      //         [...newUpdates.map((e) => e.id), ...existingUpdateIds], null);
-      // if (silentlyUpdated.isNotEmpty) {
-      //   newUpdates
-      //       .where((element) => !silentlyUpdated.contains(element.id))
-      //       .toList();
-      //   notificationsProvider.notify(
-      //       SilentUpdateNotification(
-      //           silentlyUpdated.map((e) => appsProvider.apps[e]!.app).toList()),
-      //       cancelExisting: true);
-      // }
-      if (newUpdates.isNotEmpty) {
-        notificationsProvider.notify(UpdateNotification(newUpdates),
-            cancelExisting: true);
-      }
-      return Future.value(true);
-    } catch (e) {
-      notificationsProvider.notify(
-          ErrorCheckingUpdatesNotification(e.toString()),
-          cancelExisting: true);
-      return Future.value(false);
-    } finally {
-      await notificationsProvider.cancel(checkingUpdatesNotification.id);
-    }
   });
 }
 
@@ -95,16 +124,6 @@ class MyApp extends StatelessWidget {
     if (settingsProvider.prefs == null) {
       settingsProvider.initializeSettings();
     } else {
-      // Register the background update task according to the user's setting
-      if (settingsProvider.updateInterval > 0) {
-        Workmanager().registerPeriodicTask('bg-update-check', 'bg-update-check',
-            frequency: Duration(minutes: settingsProvider.updateInterval),
-            initialDelay: Duration(minutes: settingsProvider.updateInterval),
-            constraints: Constraints(networkType: NetworkType.connected),
-            existingWorkPolicy: ExistingWorkPolicy.replace);
-      } else {
-        Workmanager().cancelByUniqueName('bg-update-check');
-      }
       bool isFirstRun = settingsProvider.checkAndFlipFirstRun();
       if (isFirstRun) {
         // If this is the first run, ask for notification permissions and add Obtainium to the Apps list
@@ -119,9 +138,24 @@ class MyApp extends StatelessWidget {
               currentReleaseTag,
               [],
               0,
-              ['true'])
+              ['true'],
+              null)
         ]);
       }
+      // Register the background update task according to the user's setting
+      if (settingsProvider.updateInterval == 0) {
+        Workmanager().cancelByUniqueName(bgUpdateCheckTaskName);
+      } else {
+        Workmanager().registerPeriodicTask(
+            bgUpdateCheckTaskName, bgUpdateCheckTaskName,
+            frequency: Duration(minutes: settingsProvider.updateInterval),
+            initialDelay: Duration(minutes: settingsProvider.updateInterval),
+            constraints: Constraints(networkType: NetworkType.connected),
+            existingWorkPolicy: ExistingWorkPolicy.keep,
+            backoffPolicy: BackoffPolicy.linear,
+            backoffPolicyDelay:
+                const Duration(minutes: minUpdateIntervalMinutes));
+      }
     }
 
     return DynamicColorBuilder(

lib/mass_app_sources/githubstars.dart

@@ -1,6 +1,8 @@
 import 'dart:convert';
 
 import 'package:http/http.dart';
+import 'package:obtainium/app_sources/github.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/providers/source_provider.dart';
 
 class GitHubStars implements MassAppSource {
@@ -10,23 +12,40 @@ class GitHubStars implements MassAppSource {
   @override
   late List<String> requiredArgs = ['Username'];
 
-  @override
+  Future<List<String>> getOnePageOfUserStarredUrls(
-  Future<List<String>> getUrls(List<String> args) async {
+      String username, int page) async {
-    if (args.length != requiredArgs.length) {
+    Response res = await get(Uri.parse(
-      throw 'Wrong number of arguments provided';
+        'https://${await GitHub().getCredentialPrefixIfAny()}api.github.com/users/$username/starred?per_page=100&page=$page'));
-    }
-    Response res =
-        await get(Uri.parse('https://api.github.com/users/${args[0]}/starred'));
     if (res.statusCode == 200) {
       return (jsonDecode(res.body) as List<dynamic>)
           .map((e) => e['html_url'] as String)
           .toList();
     } else {
       if (res.headers['x-ratelimit-remaining'] == '0') {
-        throw 'Rate limit reached - try again in ${(int.parse(res.headers['x-ratelimit-reset'] ?? '1800000000') / 60000000).toString()} minutes';
+        throw RateLimitError(
+            (int.parse(res.headers['x-ratelimit-reset'] ?? '1800000000') /
+                    60000000)
+                .round());
       }
 
       throw 'Unable to find user\'s starred repos';
     }
   }
+
+  @override
+  Future<List<String>> getUrls(List<String> args) async {
+    if (args.length != requiredArgs.length) {
+      throw 'Wrong number of arguments provided';
+    }
+    List<String> urls = [];
+    var page = 1;
+    while (true) {
+      var pageUrls = await getOnePageOfUserStarredUrls(args[0], page++);
+      urls.addAll(pageUrls);
+      if (pageUrls.length < 100) {
+        break;
+      }
+    }
+    return urls;
+  }
 }

lib/pages/add_app.dart

@@ -52,7 +52,7 @@ class _AddAppPageState extends State<AddAppPage> {
                                                 sourceProvider
                                                     .getSource(value ?? '')
                                                     .standardizeURL(
-                                                        makeUrlHttps(
+                                                        preStandardizeUrl(
                                                             value ?? ''));
                                               } catch (e) {
                                                 return e is String

lib/pages/app.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:obtainium/components/generated_form.dart';
 import 'package:obtainium/components/generated_form_modal.dart';
 import 'package:obtainium/providers/apps_provider.dart';
 import 'package:obtainium/providers/settings_provider.dart';
@@ -35,58 +36,84 @@ class _AppPageState extends State<AppPage> {
     return Scaffold(
       appBar: settingsProvider.showAppWebpage ? AppBar() : null,
       backgroundColor: Theme.of(context).colorScheme.surface,
-      body: settingsProvider.showAppWebpage
+      body: RefreshIndicator(
-          ? WebView(
+          child: settingsProvider.showAppWebpage
-              initialUrl: app?.app.url,
+              ? WebView(
-              javascriptMode: JavascriptMode.unrestricted,
+                  initialUrl: app?.app.url,
-            )
+                  javascriptMode: JavascriptMode.unrestricted,
-          : Column(
+                )
-              mainAxisAlignment: MainAxisAlignment.center,
+              : CustomScrollView(
-              crossAxisAlignment: CrossAxisAlignment.stretch,
+                  slivers: [
-              children: [
+                    SliverFillRemaining(
-                Text(
+                        child: Column(
-                  app?.app.name ?? 'App',
+                      mainAxisAlignment: MainAxisAlignment.center,
-                  textAlign: TextAlign.center,
+                      crossAxisAlignment: CrossAxisAlignment.stretch,
-                  style: Theme.of(context).textTheme.displayLarge,
+                      children: [
-                ),
+                        Text(
-                Text(
+                          app?.app.name ?? 'App',
-                  'By ${app?.app.author ?? 'Unknown'}',
+                          textAlign: TextAlign.center,
-                  textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.displayLarge,
-                  style: Theme.of(context).textTheme.headlineMedium,
+                        ),
-                ),
+                        Text(
-                const SizedBox(
+                          'By ${app?.app.author ?? 'Unknown'}',
-                  height: 32,
+                          textAlign: TextAlign.center,
-                ),
+                          style: Theme.of(context).textTheme.headlineMedium,
-                GestureDetector(
+                        ),
-                    onTap: () {
+                        const SizedBox(
-                      if (app?.app.url != null) {
+                          height: 32,
-                        launchUrlString(app?.app.url ?? '',
+                        ),
-                            mode: LaunchMode.externalApplication);
+                        GestureDetector(
-                      }
+                            onTap: () {
-                    },
+                              if (app?.app.url != null) {
-                    child: Text(
+                                launchUrlString(app?.app.url ?? '',
-                      app?.app.url ?? '',
+                                    mode: LaunchMode.externalApplication);
-                      textAlign: TextAlign.center,
+                              }
-                      style: const TextStyle(
+                            },
-                          decoration: TextDecoration.underline,
+                            child: Text(
-                          fontStyle: FontStyle.italic,
+                              app?.app.url ?? '',
-                          fontSize: 12),
+                              textAlign: TextAlign.center,
+                              style: const TextStyle(
+                                  decoration: TextDecoration.underline,
+                                  fontStyle: FontStyle.italic,
+                                  fontSize: 12),
+                            )),
+                        const SizedBox(
+                          height: 32,
+                        ),
+                        Text(
+                          'Latest Version: ${app?.app.latestVersion ?? 'Unknown'}',
+                          textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.bodyLarge,
+                        ),
+                        Text(
+                          'Installed Version: ${app?.app.installedVersion ?? 'None'}',
+                          textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.bodyLarge,
+                        ),
+                        const SizedBox(
+                          height: 32,
+                        ),
+                        Text(
+                          'Last Update Check: ${app?.app.lastUpdateCheck == null ? 'Never' : '\n${app?.app.lastUpdateCheck?.toLocal()}'}',
+                          textAlign: TextAlign.center,
+                          style: const TextStyle(
+                              fontStyle: FontStyle.italic, fontSize: 12),
+                        )
+                      ],
                     )),
-                const SizedBox(
+                  ],
-                  height: 32,
                 ),
-                Text(
+          onRefresh: () async {
-                  'Latest Version: ${app?.app.latestVersion ?? 'Unknown'}',
+            if (app != null) {
-                  textAlign: TextAlign.center,
+              try {
-                  style: Theme.of(context).textTheme.bodyLarge,
+                await appsProvider.getUpdate(app.app.id);
-                ),
+              } catch (e) {
-                Text(
+                ScaffoldMessenger.of(context).showSnackBar(
-                  'Installed Version: ${app?.app.installedVersion ?? 'None'}',
+                  SnackBar(content: Text(e.toString())),
-                  textAlign: TextAlign.center,
+                );
-                  style: Theme.of(context).textTheme.bodyLarge,
+              }
-                ),
+            }
-              ],
+          }),
-            ),
       bottomSheet: Padding(
           padding: EdgeInsets.fromLTRB(
               0, 0, 0, MediaQuery.of(context).padding.bottom),
@@ -187,20 +214,35 @@ class _AppPageState extends State<AppPage> {
                               onPressed: app?.downloadProgress != null
                                   ? null
                                   : () {
-                                      showDialog(
+                                      showDialog<List<String>>(
                                           context: context,
                                           builder: (BuildContext ctx) {
                                             return GeneratedFormModal(
                                                 title: 'Additional Options',
-                                                items: source
+                                                items: [
-                                                    .additionalDataFormItems,
+                                                  ...source
+                                                      .additionalDataFormItems,
+                                                  [
+                                                    GeneratedFormItem(
+                                                        label: 'App Name',
+                                                        required: true)
+                                                  ]
+                                                ],
                                                 defaultValues: app != null
-                                                    ? app.app.additionalData
+                                                    ? [
-                                                    : source
+                                                        ...app
-                                                        .additionalDataDefaults);
+                                                            .app.additionalData,
+                                                        app.app.name
+                                                      ]
+                                                    : [
+                                                        ...source
+                                                            .additionalDataDefaults
+                                                      ]);
                                           }).then((values) {
                                         if (app != null && values != null) {
                                           var changedApp = app.app;
+                                          var name = values.removeLast();
+                                          changedApp.name = name;
                                           changedApp.additionalData = values;
                                           appsProvider.saveApps([changedApp]);
                                         }

lib/pages/apps.dart

@@ -18,6 +18,8 @@ class AppsPage extends StatefulWidget {
 
 class AppsPageState extends State<AppsPage> {
   AppsFilter? filter;
+  var updatesOnlyFilter =
+      AppsFilter(includeUptodate: false, includeNonInstalled: false);
   Set<String> selectedIds = {};
 
   clearSelected() {
@@ -45,6 +47,8 @@ class AppsPageState extends State<AppsPage> {
     var appsProvider = context.watch<AppsProvider>();
     var settingsProvider = context.watch<SettingsProvider>();
     var sortedApps = appsProvider.apps.values.toList();
+    var currentFilterIsUpdatesOnly =
+        filter?.isIdenticalTo(updatesOnlyFilter) ?? false;
 
     selectedIds = selectedIds
         .where((element) => sortedApps.map((e) => e.app.id).contains(element))
@@ -112,6 +116,19 @@ class AppsPageState extends State<AppsPage> {
       sortedApps = sortedApps.reversed.toList();
     }
 
+    var existingUpdateIdsAllOrSelected = appsProvider
+        .getExistingUpdates(installedOnly: true)
+        .where((element) => selectedIds.isEmpty
+            ? sortedApps.where((a) => a.app.id == element).isNotEmpty
+            : selectedIds.contains(element))
+        .toList();
+    var newInstallIdsAllOrSelected = appsProvider
+        .getExistingUpdates(nonInstalledOnly: true)
+        .where((element) => selectedIds.isEmpty
+            ? sortedApps.where((a) => a.app.id == element).isNotEmpty
+            : selectedIds.contains(element))
+        .toList();
+
     return Scaffold(
       backgroundColor: Theme.of(context).colorScheme.surface,
       body: RefreshIndicator(
@@ -133,8 +150,9 @@ class AppsPageState extends State<AppsPage> {
                           : Text(
                               appsProvider.apps.isEmpty
                                   ? 'No Apps'
-                                  : 'No Search Results',
+                                  : 'No Apps for Filter',
                               style: Theme.of(context).textTheme.headlineMedium,
+                              textAlign: TextAlign.center,
                             ))),
             SliverList(
                 delegate: SliverChildBuilderDelegate(
@@ -175,154 +193,156 @@ class AppsPageState extends State<AppsPage> {
       persistentFooterButtons: [
         Row(
           children: [
-            TextButton.icon(
+            IconButton(
                 onPressed: () {
                   selectedIds.isEmpty
                       ? selectThese(sortedApps.map((e) => e.app.id).toList())
                       : clearSelected();
                 },
-                icon: Icon(selectedIds.isEmpty
+                icon: Icon(
-                    ? Icons.select_all_outlined
+                  selectedIds.isEmpty
-                    : Icons.deselect_outlined),
+                      ? Icons.select_all_outlined
-                label: Text(selectedIds.isEmpty
+                      : Icons.deselect_outlined,
+                  color: Theme.of(context).colorScheme.primary,
+                ),
+                tooltip: selectedIds.isEmpty
                     ? 'Select All'
-                    : 'Deselect ${selectedIds.length.toString()}')),
+                    : 'Deselect ${selectedIds.length.toString()}'),
             const VerticalDivider(),
             Expanded(
-                child: selectedIds.isEmpty
+                child: Row(
-                    ? Container()
+              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
-                    : Row(
+              children: [
-                        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+                selectedIds.isEmpty
-                        children: [
+                    ? const SizedBox()
-                          IconButton(
+                    : IconButton(
-                            visualDensity: VisualDensity.compact,
+                        visualDensity: VisualDensity.compact,
-                            onPressed: () {
+                        onPressed: () {
-                              showDialog<List<String>?>(
+                          showDialog<List<String>?>(
-                                  context: context,
+                              context: context,
-                                  builder: (BuildContext ctx) {
+                              builder: (BuildContext ctx) {
-                                    return GeneratedFormModal(
+                                return GeneratedFormModal(
-                                      title: 'Remove Selected Apps?',
+                                  title: 'Remove Selected Apps?',
-                                      items: const [],
+                                  items: const [],
-                                      defaultValues: const [],
+                                  defaultValues: const [],
-                                      initValid: true,
+                                  initValid: true,
-                                      message:
+                                  message:
-                                          '${selectedIds.length} App${selectedIds.length == 1 ? '' : 's'} will be removed from Obtainium but remain installed. You still need to uninstall ${selectedIds.length == 1 ? 'it' : 'them'} manually.',
+                                      '${selectedIds.length} App${selectedIds.length == 1 ? '' : 's'} will be removed from Obtainium but remain installed. You still need to uninstall ${selectedIds.length == 1 ? 'it' : 'them'} manually.',
-                                    );
+                                );
-                                  }).then((values) {
+                              }).then((values) {
-                                if (values != null) {
+                            if (values != null) {
-                                  appsProvider.removeApps(selectedIds.toList());
+                              appsProvider.removeApps(selectedIds.toList());
-                                }
+                            }
-                              });
+                          });
-                            },
+                        },
-                            tooltip: 'Remove Selected Apps',
+                        tooltip: 'Remove Selected Apps',
-                            icon: const Icon(Icons.delete_outline_outlined),
+                        icon: const Icon(Icons.delete_outline_outlined),
-                          ),
+                      ),
-                          IconButton(
+                IconButton(
-                              visualDensity: VisualDensity.compact,
+                    visualDensity: VisualDensity.compact,
-                              onPressed: appsProvider.areDownloadsRunning() ||
+                    onPressed: appsProvider.areDownloadsRunning() ||
-                                      selectedIds
+                            (existingUpdateIdsAllOrSelected.isEmpty &&
-                                          .where((id) =>
+                                newInstallIdsAllOrSelected.isEmpty)
-                                              appsProvider.apps[id]!.app
+                        ? null
-                                                  .installedVersion !=
+                        : () {
-                                              appsProvider
+                            HapticFeedback.heavyImpact();
-                                                  .apps[id]!.app.latestVersion)
+                            List<List<GeneratedFormItem>> formInputs = [];
-                                          .isEmpty
+                            if (existingUpdateIdsAllOrSelected.isNotEmpty &&
-                                  ? null
+                                newInstallIdsAllOrSelected.isNotEmpty) {
-                                  : () {
+                              formInputs.add([
-                                      HapticFeedback.heavyImpact();
+                                GeneratedFormItem(
-                                      var existingUpdateIdsSelected =
+                                    label:
-                                          appsProvider
+                                        'Update ${existingUpdateIdsAllOrSelected.length} App${existingUpdateIdsAllOrSelected.length == 1 ? '' : 's'}',
-                                              .getExistingUpdates(
+                                    type: FormItemType.bool)
-                                                  installedOnly: true)
+                              ]);
-                                              .where((element) =>
+                              formInputs.add([
-                                                  selectedIds.contains(element))
+                                GeneratedFormItem(
-                                              .toList();
+                                    label:
-                                      var newInstallIdsSelected = appsProvider
+                                        'Install ${newInstallIdsAllOrSelected.length} new App${newInstallIdsAllOrSelected.length == 1 ? '' : 's'}',
-                                          .getExistingUpdates(
+                                    type: FormItemType.bool)
-                                              nonInstalledOnly: true)
+                              ]);
-                                          .where((element) =>
+                            }
-                                              selectedIds.contains(element))
+                            showDialog<List<String>?>(
-                                          .toList();
+                                context: context,
-                                      List<List<GeneratedFormItem>> formInputs =
+                                builder: (BuildContext ctx) {
-                                          [];
+                                  return GeneratedFormModal(
-                                      if (existingUpdateIdsSelected
+                                    title:
-                                              .isNotEmpty &&
+                                        'Install${selectedIds.isEmpty ? ' ' : ' Selected '}Apps?',
-                                          newInstallIdsSelected.isNotEmpty) {
+                                    message:
-                                        formInputs.add([
+                                        '${existingUpdateIdsAllOrSelected.length} update${existingUpdateIdsAllOrSelected.length == 1 ? '' : 's'} and ${newInstallIdsAllOrSelected.length} new install${newInstallIdsAllOrSelected.length == 1 ? '' : 's'}.',
-                                          GeneratedFormItem(
+                                    items: formInputs,
-                                              label:
+                                    defaultValues: const ['true', 'true'],
-                                                  'Update ${existingUpdateIdsSelected.length} Apps?',
+                                    initValid: true,
-                                              type: FormItemType.bool)
+                                  );
-                                        ]);
+                                }).then((values) {
-                                        formInputs.add([
+                              if (values != null) {
-                                          GeneratedFormItem(
+                                bool shouldInstallUpdates =
-                                              label:
+                                    values.length < 2 || values[0] == 'true';
-                                                  'Install ${newInstallIdsSelected.length} new Apps?',
+                                bool shouldInstallNew =
-                                              type: FormItemType.bool)
+                                    values.length < 2 || values[1] == 'true';
-                                        ]);
+                                settingsProvider
-                                      }
+                                    .getInstallPermission()
-                                      showDialog<List<String>?>(
+                                    .then((_) {
-                                          context: context,
+                                  List<String> toInstall = [];
-                                          builder: (BuildContext ctx) {
+                                  if (shouldInstallUpdates) {
-                                            return GeneratedFormModal(
+                                    toInstall
-                                              title: 'Install Selected Apps?',
+                                        .addAll(existingUpdateIdsAllOrSelected);
-                                              message:
+                                  }
-                                                  '${existingUpdateIdsSelected.length} update${existingUpdateIdsSelected.length == 1 ? '' : 's'} and ${newInstallIdsSelected.length} new install${newInstallIdsSelected.length == 1 ? '' : 's'}.',
+                                  if (shouldInstallNew) {
-                                              items: formInputs,
+                                    toInstall
-                                              defaultValues: const [
+                                        .addAll(newInstallIdsAllOrSelected);
-                                                'true',
+                                  }
-                                                'true'
+                                  appsProvider.downloadAndInstallLatestApp(
-                                              ],
+                                      toInstall, context);
-                                              initValid: true,
+                                });
-                                            );
-                                          }).then((values) {
-                                        if (values != null) {
-                                          bool shouldInstallUpdates =
-                                              values.length < 2 ||
-                                                  values[0] == 'true';
-                                          bool shouldInstallNew =
-                                              values.length < 2 ||
-                                                  values[1] == 'true';
-                                          settingsProvider
-                                              .getInstallPermission()
-                                              .then((_) {
-                                            List<String> toInstall = [];
-                                            if (shouldInstallUpdates) {
-                                              toInstall.addAll(
-                                                  existingUpdateIdsSelected);
-                                            }
-                                            if (shouldInstallNew) {
-                                              toInstall.addAll(
-                                                  newInstallIdsSelected);
-                                            }
-                                            appsProvider
-                                                .downloadAndInstallLatestApp(
-                                                    toInstall, context);
-                                          });
-                                        }
-                                      });
-                                    },
-                              tooltip: 'Install/Update Selected Apps',
-                              icon: const Icon(
-                                Icons.file_download_outlined,
-                              )),
-                          IconButton(
-                            visualDensity: VisualDensity.compact,
-                            onPressed: () {
-                              String urls = '';
-                              for (var id in selectedIds) {
-                                urls += '${appsProvider.apps[id]!.app.url}\n';
                               }
-                              urls = urls.substring(0, urls.length - 1);
+                            });
-                              Share.share(urls,
+                          },
-                                  subject: 'Selected App URLs from Obtainium');
+                    tooltip:
-                            },
+                        'Install/Update${selectedIds.isEmpty ? ' ' : ' Selected '}Apps',
-                            tooltip: 'Share Selected App URLs',
+                    icon: const Icon(
-                            icon: const Icon(Icons.share),
+                      Icons.file_download_outlined,
-                          ),
+                    )),
-                        ],
+                selectedIds.isEmpty
-                      )),
+                    ? const SizedBox()
+                    : IconButton(
+                        visualDensity: VisualDensity.compact,
+                        onPressed: () {
+                          String urls = '';
+                          for (var id in selectedIds) {
+                            urls += '${appsProvider.apps[id]!.app.url}\n';
+                          }
+                          urls = urls.substring(0, urls.length - 1);
+                          Share.share(urls,
+                              subject: 'Selected App URLs from Obtainium');
+                        },
+                        tooltip: 'Share Selected App URLs',
+                        icon: const Icon(Icons.share),
+                      ),
+              ],
+            )),
             const VerticalDivider(),
+            IconButton(
+              visualDensity: VisualDensity.compact,
+              onPressed: () {
+                setState(() {
+                  if (currentFilterIsUpdatesOnly) {
+                    filter = null;
+                  } else {
+                    filter = updatesOnlyFilter;
+                  }
+                });
+              },
+              tooltip: currentFilterIsUpdatesOnly
+                  ? 'Remove Out-of-Date App Filter'
+                  : 'Show Out-of-Date Apps Only',
+              icon: Icon(
+                currentFilterIsUpdatesOnly
+                    ? Icons.update_disabled_rounded
+                    : Icons.update_rounded,
+                color: Theme.of(context).colorScheme.primary,
+              ),
+            ),
             appsProvider.apps.isEmpty
                 ? const SizedBox()
                 : TextButton.icon(
@@ -368,10 +388,6 @@ class AppsPageState extends State<AppsPage> {
                               filter = null;
                             }
                           });
-                        } else {
-                          setState(() {
-                            filter = null;
-                          });
                         }
                       });
                     },

lib/pages/import_export.dart

@@ -40,7 +40,8 @@ class _ImportExportPageState extends State<ImportExportPage> {
 
     Future<List<List<String>>> addApps(List<String> urls) async {
       await settingsProvider.getInstallPermission();
-      List<dynamic> results = await sourceProvider.getApps(urls);
+      List<dynamic> results = await sourceProvider.getApps(urls,
+          ignoreUrls: appsProvider.apps.values.map((e) => e.app.url).toList());
       List<App> apps = results[0];
       Map<String, dynamic> errorsMap = results[1];
       for (var app in apps) {
@@ -266,42 +267,67 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                                       );
                                                     }).then((values) {
                                                   if (values != null) {
+                                                    setState(() {
+                                                      importInProgress = true;
+                                                    });
                                                     source
                                                         .getUrls(values)
                                                         .then((urls) {
-                                                      setState(() {
+                                                      showDialog<List<String>?>(
-                                                        importInProgress = true;
-                                                      });
-                                                      addApps(urls)
-                                                          .then((errors) {
-                                                        if (errors.isEmpty) {
-                                                          ScaffoldMessenger.of(
-                                                                  context)
-                                                              .showSnackBar(
-                                                            SnackBar(
-                                                                content: Text(
-                                                                    'Imported ${urls.length} Apps')),
-                                                          );
-                                                        } else {
-                                                          showDialog(
                                                               context: context,
                                                               builder:
                                                                   (BuildContext
                                                                       ctx) {
-                                                                return ImportErrorDialog(
+                                                                return UrlSelectionModal(
-                                                                    urlsLength: urls
+                                                                    urls: urls);
-                                                                        .length,
+                                                              })
-                                                                    errors:
+                                                          .then((selectedUrls) {
-                                                                        errors);
+                                                        if (selectedUrls !=
-                                                              });
+                                                            null) {
+                                                          addApps(selectedUrls)
+                                                              .then((errors) {
+                                                            if (errors
+                                                                .isEmpty) {
+                                                              ScaffoldMessenger
+                                                                      .of(context)
+                                                                  .showSnackBar(
+                                                                SnackBar(
+                                                                    content: Text(
+                                                                        'Imported ${selectedUrls.length} Apps')),
+                                                              );
+                                                            } else {
+                                                              showDialog(
+                                                                  context:
+                                                                      context,
+                                                                  builder:
+                                                                      (BuildContext
+                                                                          ctx) {
+                                                                    return ImportErrorDialog(
+                                                                        urlsLength:
+                                                                            selectedUrls
+                                                                                .length,
+                                                                        errors:
+                                                                            errors);
+                                                                  });
+                                                            }
+                                                          }).whenComplete(() {
+                                                            setState(() {
+                                                              importInProgress =
+                                                                  false;
+                                                            });
+                                                          });
+                                                        } else {
+                                                          setState(() {
+                                                            importInProgress =
+                                                                false;
+                                                          });
                                                         }
-                                                      }).whenComplete(() {
-                                                        setState(() {
-                                                          importInProgress =
-                                                              false;
-                                                        });
                                                       });
                                                     }).catchError((e) {
+                                                      setState(() {
+                                                        importInProgress =
+                                                            false;
+                                                      });
                                                       ScaffoldMessenger.of(
                                                               context)
                                                           .showSnackBar(
@@ -375,3 +401,67 @@ class _ImportErrorDialogState extends State<ImportErrorDialog> {
     );
   }
 }
+
+// ignore: must_be_immutable
+class UrlSelectionModal extends StatefulWidget {
+  UrlSelectionModal({super.key, required this.urls});
+
+  List<String> urls;
+
+  @override
+  State<UrlSelectionModal> createState() => _UrlSelectionModalState();
+}
+
+class _UrlSelectionModalState extends State<UrlSelectionModal> {
+  Map<String, bool> urlSelections = {};
+  @override
+  void initState() {
+    super.initState();
+    for (var url in widget.urls) {
+      urlSelections.putIfAbsent(url, () => true);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      scrollable: true,
+      title: const Text('Select URLs to Import'),
+      content: Column(children: [
+        ...urlSelections.keys.map((url) {
+          return Row(children: [
+            Checkbox(
+                value: urlSelections[url],
+                onChanged: (value) {
+                  setState(() {
+                    urlSelections[url] = value ?? false;
+                  });
+                }),
+            const SizedBox(
+              width: 8,
+            ),
+            Expanded(
+                child: Text(
+              Uri.parse(url).path.substring(1),
+            ))
+          ]);
+        })
+      ]),
+      actions: [
+        TextButton(
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+            child: const Text('Cancel')),
+        TextButton(
+            onPressed: () {
+              Navigator.of(context).pop(urlSelections.keys
+                  .where((url) => urlSelections[url] ?? false)
+                  .toList());
+            },
+            child: Text(
+                'Import ${urlSelections.values.where((b) => b).length} URLs'))
+      ],
+    );
+  }
+}

lib/pages/settings.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:obtainium/components/custom_app_bar.dart';
+import 'package:obtainium/components/generated_form.dart';
 import 'package:obtainium/providers/settings_provider.dart';
+import 'package:obtainium/providers/source_provider.dart';
 import 'package:provider/provider.dart';
 import 'package:url_launcher/url_launcher_string.dart';
 
@@ -15,6 +17,7 @@ class _SettingsPageState extends State<SettingsPage> {
   @override
   Widget build(BuildContext context) {
     SettingsProvider settingsProvider = context.watch<SettingsProvider>();
+    SourceProvider sourceProvider = SourceProvider();
     if (settingsProvider.prefs == null) {
       settingsProvider.initializeSettings();
     }
@@ -22,8 +25,7 @@ class _SettingsPageState extends State<SettingsPage> {
         backgroundColor: Theme.of(context).colorScheme.surface,
         body: CustomScrollView(slivers: <Widget>[
           const CustomAppBar(title: 'Settings'),
-          SliverFillRemaining(
+          SliverToBoxAdapter(
-              hasScrollBody: true,
               child: Padding(
                   padding: const EdgeInsets.all(16),
                   child: settingsProvider.prefs == null
@@ -160,7 +162,7 @@ class _SettingsPageState extends State<SettingsPage> {
                               height: 16,
                             ),
                             Text(
-                              'More',
+                              'Updates',
                               style: TextStyle(
                                   color: Theme.of(context).colorScheme.primary),
                             ),
@@ -169,68 +171,108 @@ class _SettingsPageState extends State<SettingsPage> {
                                     labelText:
                                         'Background Update Checking Interval'),
                                 value: settingsProvider.updateInterval,
-                                items: const [
+                                items: updateIntervals.map((e) {
-                                  DropdownMenuItem(
+                                  int displayNum = (e < 60
-                                    value: 15,
+                                          ? e
-                                    child: Text('15 Minutes'),
+                                          : e < 1440
-                                  ),
+                                              ? e / 60
-                                  DropdownMenuItem(
+                                              : e / 1440)
-                                    value: 30,
+                                      .round();
-                                    child: Text('30 Minutes'),
+                                  var displayUnit = (e < 60
-                                  ),
+                                      ? 'Minute'
-                                  DropdownMenuItem(
+                                      : e < 1440
-                                    value: 60,
+                                          ? 'Hour'
-                                    child: Text('1 Hour'),
+                                          : 'Day');
-                                  ),
+
-                                  DropdownMenuItem(
+                                  String display = e == 0
-                                    value: 360,
+                                      ? 'Never - Manual Only'
-                                    child: Text('6 Hours'),
+                                      : '$displayNum $displayUnit${displayNum == 1 ? '' : 's'}';
-                                  ),
+                                  return DropdownMenuItem(
-                                  DropdownMenuItem(
+                                      value: e, child: Text(display));
-                                    value: 720,
+                                }).toList(),
-                                    child: Text('12 Hours'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 1440,
-                                    child: Text('1 Day'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 0,
-                                    child: Text('Never - Manual Only'),
-                                  ),
-                                ],
                                 onChanged: (value) {
                                   if (value != null) {
                                     settingsProvider.updateInterval = value;
                                   }
                                 }),
-                            const Spacer(),
+                            const SizedBox(
-                            Row(
+                              height: 8,
-                              mainAxisAlignment: MainAxisAlignment.center,
-                              children: [
-                                TextButton.icon(
-                                  style: ButtonStyle(
-                                    foregroundColor:
-                                        MaterialStateProperty.resolveWith<
-                                            Color>((Set<MaterialState> states) {
-                                      return Colors.grey;
-                                    }),
-                                  ),
-                                  onPressed: () {
-                                    launchUrlString(settingsProvider.sourceUrl,
-                                        mode: LaunchMode.externalApplication);
-                                  },
-                                  icon: const Icon(Icons.code),
-                                  label: Text(
-                                    'Source',
-                                    style:
-                                        Theme.of(context).textTheme.bodySmall,
-                                  ),
-                                )
-                              ],
                             ),
+                            Text(
+                              'Longer intervals recommended for large App collections',
+                              style: Theme.of(context)
+                                  .textTheme
+                                  .labelMedium!
+                                  .merge(const TextStyle(
+                                      fontStyle: FontStyle.italic)),
+                            ),
+                            const Divider(
+                              height: 48,
+                            ),
+                            Text(
+                              'Source-Specific',
+                              style: TextStyle(
+                                  color: Theme.of(context).colorScheme.primary),
+                            ),
+                            ...sourceProvider.sources.map((e) {
+                              if (e.moreSourceSettingsFormItems.isNotEmpty) {
+                                return GeneratedForm(
+                                    items: e.moreSourceSettingsFormItems
+                                        .map((e) => [e])
+                                        .toList(),
+                                    onValueChanges: (values, valid) {
+                                      if (valid) {
+                                        for (var i = 0;
+                                            i < values.length;
+                                            i++) {
+                                          settingsProvider.setSettingString(
+                                              e.moreSourceSettingsFormItems[i]
+                                                  .id,
+                                              values[i]);
+                                        }
+                                      }
+                                    },
+                                    defaultValues:
+                                        e.moreSourceSettingsFormItems.map((e) {
+                                      return settingsProvider
+                                              .getSettingString(e.id) ??
+                                          '';
+                                    }).toList());
+                              } else {
+                                return Container();
+                              }
+                            }),
                           ],
-                        )))
+                        ))),
+          SliverToBoxAdapter(
+            child: Column(
+              children: [
+                const SizedBox(
+                  height: 16,
+                ),
+                TextButton.icon(
+                  style: ButtonStyle(
+                    foregroundColor: MaterialStateProperty.resolveWith<Color>(
+                        (Set<MaterialState> states) {
+                      return Colors.grey;
+                    }),
+                  ),
+                  onPressed: () {
+                    launchUrlString(settingsProvider.sourceUrl,
+                        mode: LaunchMode.externalApplication);
+                  },
+                  icon: const Icon(Icons.code),
+                  label: Text(
+                    'Source',
+                    style: Theme.of(context).textTheme.bodySmall,
+                  ),
+                ),
+                const SizedBox(
+                  height: 16,
+                ),
+              ],
+            ),
+          )
         ]));
   }
 }

lib/providers/apps_provider.dart

@@ -293,16 +293,32 @@ class AppsProvider with ChangeNotifier {
       }
       await saveApps([newApp]);
       return newApp;
+    } else if ((newApp.lastUpdateCheck?.microsecondsSinceEpoch ?? 0) -
+            (currentApp.lastUpdateCheck?.microsecondsSinceEpoch ?? 0) >
+        5000000) {
+      currentApp.lastUpdateCheck = newApp.lastUpdateCheck;
+      await saveApps([currentApp]);
     }
     return null;
   }
 
-  Future<List<App>> checkUpdates() async {
+  Future<List<App>> checkUpdates({DateTime? ignoreAfter}) async {
     List<App> updates = [];
     if (!gettingUpdates) {
       gettingUpdates = true;
 
       List<String> appIds = apps.keys.toList();
+      if (ignoreAfter != null) {
+        appIds = appIds
+            .where((id) =>
+                apps[id]!.app.lastUpdateCheck == null ||
+                apps[id]!.app.lastUpdateCheck!.isBefore(ignoreAfter))
+            .toList();
+      }
+      appIds.sort((a, b) => (apps[a]!.app.lastUpdateCheck ??
+              DateTime.fromMicrosecondsSinceEpoch(0))
+          .compareTo(apps[b]!.app.lastUpdateCheck ??
+              DateTime.fromMicrosecondsSinceEpoch(0)));
       for (int i = 0; i < appIds.length; i++) {
         App? newApp = await getUpdate(appIds[i]);
         if (newApp != null) {

lib/providers/settings_provider.dart

@@ -13,6 +13,16 @@ enum SortColumnSettings { added, nameAuthor, authorName }
 
 enum SortOrderSettings { ascending, descending }
 
+const maxAPIRateLimitMinutes = 30;
+const minUpdateIntervalMinutes = maxAPIRateLimitMinutes + 30;
+const maxUpdateIntervalMinutes = 4320;
+List<int> updateIntervals = [15, 30, 60, 120, 180, 360, 720, 1440, 4320, 0]
+    .where((element) =>
+        (element >= minUpdateIntervalMinutes &&
+            element <= maxUpdateIntervalMinutes) ||
+        element == 0)
+    .toList();
+
 class SettingsProvider with ChangeNotifier {
   SharedPreferences? prefs;
 
@@ -45,7 +55,17 @@ class SettingsProvider with ChangeNotifier {
   }
 
   int get updateInterval {
-    return prefs?.getInt('updateInterval') ?? 1440;
+    var min = prefs?.getInt('updateInterval') ?? 180;
+    if (!updateIntervals.contains(min)) {
+      var temp = updateIntervals[0];
+      for (var i in updateIntervals) {
+        if (min > i && i != 0) {
+          temp = i;
+        }
+      }
+      min = temp;
+    }
+    return min;
   }
 
   set updateInterval(int min) {
@@ -95,11 +115,19 @@ class SettingsProvider with ChangeNotifier {
   }
 
   bool get showAppWebpage {
-    return prefs?.getBool('showAppWebpage') ?? true;
+    return prefs?.getBool('showAppWebpage') ?? false;
   }
 
   set showAppWebpage(bool show) {
     prefs?.setBool('showAppWebpage', show);
     notifyListeners();
   }
+
+  String? getSettingString(String settingId) {
+    return prefs?.getString(settingId);
+  }
+
+  void setSettingString(String settingId, String value) {
+    prefs?.setString(settingId, value);
+  }
 }

lib/providers/source_provider.dart

@@ -38,6 +38,7 @@ class App {
   List<String> apkUrls = [];
   late int preferredApkIndex;
   late List<String> additionalData;
+  late DateTime? lastUpdateCheck;
   App(
       this.id,
       this.url,
@@ -47,7 +48,8 @@ class App {
       this.latestVersion,
       this.apkUrls,
       this.preferredApkIndex,
-      this.additionalData);
+      this.additionalData,
+      this.lastUpdateCheck);
 
   @override
   String toString() {
@@ -69,7 +71,10 @@ class App {
       json['preferredApkIndex'] == null ? 0 : json['preferredApkIndex'] as int,
       json['additionalData'] == null
           ? SourceProvider().getSource(json['url']).additionalDataDefaults
-          : List<String>.from(jsonDecode(json['additionalData'])));
+          : List<String>.from(jsonDecode(json['additionalData'])),
+      json['lastUpdateCheck'] == null
+          ? null
+          : DateTime.fromMicrosecondsSinceEpoch(json['lastUpdateCheck']));
 
   Map<String, dynamic> toJson() => {
         'id': id,
@@ -80,7 +85,8 @@ class App {
         'latestVersion': latestVersion,
         'apkUrls': jsonEncode(apkUrls),
         'preferredApkIndex': preferredApkIndex,
-        'additionalData': jsonEncode(additionalData)
+        'additionalData': jsonEncode(additionalData),
+        'lastUpdateCheck': lastUpdateCheck?.microsecondsSinceEpoch
       };
 }
 
@@ -90,7 +96,7 @@ escapeRegEx(String s) {
   });
 }
 
-makeUrlHttps(String url) {
+preStandardizeUrl(String url) {
   if (url.toLowerCase().indexOf('http://') != 0 &&
       url.toLowerCase().indexOf('https://') != 0) {
     url = 'https://$url';
@@ -129,6 +135,7 @@ abstract class AppSource {
   AppNames getAppNames(String standardUrl);
   late List<List<GeneratedFormItem>> additionalDataFormItems;
   late List<String> additionalDataDefaults;
+  late List<GeneratedFormItem> moreSourceSettingsFormItems;
 }
 
 abstract class MassAppSource {
@@ -153,7 +160,7 @@ class SourceProvider {
   List<MassAppSource> massSources = [GitHubStars()];
 
   AppSource getSource(String url) {
-    url = makeUrlHttps(url);
+    url = preStandardizeUrl(url);
     AppSource? source;
     for (var s in sources) {
       if (url.toLowerCase().contains('://${s.host}')) {
@@ -180,7 +187,7 @@ class SourceProvider {
 
   Future<App> getApp(AppSource source, String url, List<String> additionalData,
       {String customName = ''}) async {
-    String standardUrl = source.standardizeURL(makeUrlHttps(url));
+    String standardUrl = source.standardizeURL(preStandardizeUrl(url));
     AppNames names = source.getAppNames(standardUrl);
     APKDetails apk =
         await source.getLatestAPKDetails(standardUrl, additionalData);
@@ -195,15 +202,17 @@ class SourceProvider {
         apk.version,
         apk.apkUrls,
         apk.apkUrls.length - 1,
-        additionalData);
+        additionalData,
+        DateTime.now());
   }
 
   /// Returns a length 2 list, where the first element is a list of Apps and
   /// the second is a Map<String, dynamic> of URLs and errors
-  Future<List<dynamic>> getApps(List<String> urls) async {
+  Future<List<dynamic>> getApps(List<String> urls,
+      {List<String> ignoreUrls = const []}) async {
     List<App> apps = [];
     Map<String, dynamic> errors = {};
-    for (var url in urls) {
+    for (var url in urls.where((element) => !ignoreUrls.contains(element))) {
       try {
         var source = getSource(url);
         apps.add(await getApp(source, url, source.additionalDataDefaults));

pubspec.lock

@@ -175,7 +175,7 @@ packages:
       name: file_picker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.2.0"
+    version: "5.2.0+1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -386,7 +386,7 @@ packages:
       name: path_provider_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.4"
+    version: "2.0.5"
   path_provider_windows:
     dependency: transitive
     description:
@@ -400,7 +400,7 @@ packages:
       name: permission_handler
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "10.0.1"
+    version: "10.0.2"
   permission_handler_android:
     dependency: transitive
     description:
@@ -421,7 +421,7 @@ packages:
       name: permission_handler_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.7.1"
+    version: "3.8.0"
   permission_handler_windows:
     dependency: transitive
     description:
@@ -629,7 +629,7 @@ packages:
       name: url_launcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.1.5"
+    version: "6.1.6"
   url_launcher_android:
     dependency: transitive
     description:
@@ -664,7 +664,7 @@ packages:
       name: url_launcher_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   url_launcher_web:
     dependency: transitive
     description:
@@ -699,21 +699,21 @@ packages:
       name: webview_flutter_android
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.10.2"
+    version: "2.10.3"
   webview_flutter_platform_interface:
     dependency: transitive
     description:
       name: webview_flutter_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.3"
+    version: "1.9.5"
   webview_flutter_wkwebview:
     dependency: transitive
     description:
       name: webview_flutter_wkwebview
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.9.4"
+    version: "2.9.5"
   win32:
     dependency: transitive
     description:

pubspec.yaml

@@ -17,7 +17,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 0.4.0+19 # When changing this, update the tag in main() accordingly
+version: 0.5.2+23 # When changing this, update the tag in main() accordingly
 
 environment:
   sdk: '>=2.19.0-79.0.dev <3.0.0'