Added Steam as a Source (#159) + Bugfixes

lib/app_sources/steammobile.dart

@@ -0,0 +1,69 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:html/parser.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class SteamMobile extends AppSource {
+  SteamMobile() {
+    host = 'store.steampowered.com';
+    name = tr('steam');
+    additionalSourceAppSpecificFormItems = [
+      [
+        GeneratedFormItem(
+            label: tr('app'),
+            key: 'app',
+            required: true,
+            opts: apks.entries.toList())
+      ]
+    ];
+  }
+
+  final apks = {'steam': tr('steamMobile'), 'steam-chat-app': tr('steamChat')};
+
+  @override
+  String standardizeURL(String url) {
+    return 'https://$host';
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) => null;
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    Response res = await get(Uri.parse('https://$host/mobile'));
+    if (res.statusCode == 200) {
+      var apkNamePrefix = findGeneratedFormValueByKey(
+          additionalSourceAppSpecificFormItems
+              .reduce((value, element) => [...value, ...element]),
+          additionalData,
+          'app');
+      if (apkNamePrefix == null) {
+        throw NoReleasesError();
+      }
+      String apkInURLRegexPattern = '/$apkNamePrefix-[^/]+\\.apk\$';
+      var links = parse(res.body)
+          .querySelectorAll('a')
+          .map((e) => e.attributes['href'] ?? '')
+          .where((e) => RegExp('https://.*$apkInURLRegexPattern').hasMatch(e))
+          .toList();
+
+      if (links.isEmpty) {
+        throw NoReleasesError();
+      }
+      var versionMatch = RegExp(apkInURLRegexPattern).firstMatch(links[0]);
+      if (versionMatch == null) {
+        throw NoVersionError();
+      }
+      var version = links[0].substring(
+          versionMatch.start + apkNamePrefix.length + 2, versionMatch.end - 4);
+      var apkUrls = [links[0]];
+      return APKDetails(version, apkUrls, AppNames(name, apks[apkNamePrefix]!));
+    } else {
+      throw NoReleasesError();
+    }
+  }
+}

lib/components/generated_form.dart

@@ -16,7 +16,7 @@ class GeneratedFormItem {
   late String id;
   late List<Widget> belowWidgets;
   late String? hint;
-  late List<String>? opts;
+  late List<MapEntry<String, String>>? opts;
 
   GeneratedFormItem(
       {this.label = 'Input',
@@ -86,7 +86,7 @@ class _GeneratedFormState extends State<GeneratedForm> {
               return j < widget.defaultValues.length
                   ? widget.defaultValues[j++]
                   : e.opts != null
-                      ? e.opts!.first
+                      ? e.opts!.first.key
                       : '';
             }).toList())
         .toList();
@@ -130,14 +130,15 @@ class _GeneratedFormState extends State<GeneratedForm> {
             return Text(tr('dropdownNoOptsError'));
           }
           return DropdownButtonFormField(
-              decoration: InputDecoration(labelText: tr('colour')),
+              decoration: InputDecoration(labelText: e.value.label),
               value: values[row.key][e.key],
               items: e.value.opts!
-                  .map((e) => DropdownMenuItem(value: e, child: Text(e)))
+                  .map((e) =>
+                      DropdownMenuItem(value: e.key, child: Text(e.value)))
                   .toList(),
               onChanged: (value) {
                 setState(() {
-                  values[row.key][e.key] = value ?? e.value.opts!.first;
+                  values[row.key][e.key] = value ?? e.value.opts!.first.key;
                   someValueChanged();
                 });
               });

lib/providers/apps_provider.dart

@@ -274,9 +274,14 @@ class AppsProvider with ChangeNotifier {
             );
           });
     }
+    getHost(String url) {
+      var temp = Uri.parse(url).host.split('.');
+      return temp.sublist(temp.length - 2).join('.');
+    }
+
     // If the picked APK comes from an origin different from the source, get user confirmation (if context provided)
     if (apkUrl != null &&
-        Uri.parse(apkUrl).origin != Uri.parse(app.url).origin &&
+        getHost(apkUrl) != getHost(app.url) &&
         context != null) {
       if (await showDialog(
               context: context,

lib/providers/source_provider.dart

@@ -8,13 +8,14 @@ import 'package:html/dom.dart';
 import 'package:http/http.dart';
 import 'package:obtainium/app_sources/apkmirror.dart';
 import 'package:obtainium/app_sources/fdroid.dart';
-import 'package:obtainium/app_sources/fdroidRepo.dart';
+import 'package:obtainium/app_sources/fdroidrepo.dart';
 import 'package:obtainium/app_sources/github.dart';
 import 'package:obtainium/app_sources/gitlab.dart';
 import 'package:obtainium/app_sources/izzyondroid.dart';
 import 'package:obtainium/app_sources/mullvad.dart';
 import 'package:obtainium/app_sources/signal.dart';
 import 'package:obtainium/app_sources/sourceforge.dart';
+import 'package:obtainium/app_sources/steammobile.dart';
 import 'package:obtainium/components/generated_form.dart';
 import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/mass_app_sources/githubstars.dart';
@@ -212,7 +213,8 @@ class SourceProvider {
     Signal(),
     SourceForge(),
     APKMirror(),
-    FDroidRepo()
+    FDroidRepo(),
+    SteamMobile()
   ];
 
   // Add more mass url source classes here so they are available via the service
@@ -247,7 +249,7 @@ class SourceProvider {
   bool ifSourceAppsRequireAdditionalData(AppSource source) {
     for (var row in source.additionalSourceAppSpecificFormItems) {
       for (var element in row) {
-        if (element.required) {
+        if (element.required && element.opts == null) {
           return true;
         }
       }