Added APKMirror (Phew!)

README.md

@@ -13,6 +13,7 @@ Currently supported App sources:
 - [IzzyOnDroid](https://android.izzysoft.de/)
 - [Mullvad](https://mullvad.net/en/)
 - [Signal](https://signal.org/)
+- [APKMirror](https://apkmirror.com/)
 
 ## Limitations
 - App installs are assumed to have succeeded; failures and cancelled installs cannot be detected.

lib/app_sources/apkmirror.dart

@@ -0,0 +1,112 @@
+import 'package:html/parser.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class APKMirror implements AppSource {
+  @override
+  late String host = 'apkmirror.com';
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/apk/[^/]+/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw notValidURL(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) =>
+      '$standardUrl#whatsnew';
+
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async {
+    var originalUri = Uri.parse(apkUrl);
+    var res = await get(originalUri);
+    if (res.statusCode != 200) {
+      throw false;
+    }
+    var href =
+        parse(res.body).querySelector('.downloadButton')?.attributes['href'];
+    if (href == null) {
+      throw false;
+    }
+    var res2 = await get(Uri.parse('${originalUri.origin}$href'), headers: {
+      'User-Agent':
+          'Mozilla/5.0 (X11; Linux x86_64; rv:105.0) Gecko/20100101 Firefox/105.0'
+    });
+    if (res2.statusCode != 200) {
+      throw false;
+    }
+    var links = parse(res2.body)
+        .querySelectorAll('a')
+        .where((element) => element.innerHtml == 'here')
+        .map((e) => e.attributes['href'])
+        .where((element) => element != null)
+        .toList();
+    if (links.isEmpty) {
+      throw false;
+    }
+    return '${originalUri.origin}${links[0]}';
+  }
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData) async {
+    Response res = await get(Uri.parse('$standardUrl/feed'));
+    if (res.statusCode != 200) {
+      throw couldNotFindReleases;
+    }
+    var nextUrl = parse(res.body)
+        .querySelector('item')
+        ?.querySelector('link')
+        ?.nextElementSibling
+        ?.innerHtml;
+    if (nextUrl == null) {
+      throw couldNotFindReleases;
+    }
+    Response res2 = await get(Uri.parse(nextUrl), headers: {
+      'User-Agent':
+          'Mozilla/5.0 (X11; Linux x86_64; rv:105.0) Gecko/20100101 Firefox/105.0'
+    });
+    if (res2.statusCode != 200) {
+      throw couldNotFindReleases;
+    }
+    var html2 = parse(res2.body);
+    var origin = Uri.parse(standardUrl).origin;
+    List<String> apkUrls = html2
+        .querySelectorAll('.apkm-badge')
+        .map((e) => e.innerHtml != 'APK'
+            ? ''
+            : e.previousElementSibling?.attributes['href'] ?? '')
+        .where((element) => element.isNotEmpty)
+        .map((e) => '$origin$e')
+        .toList();
+    if (apkUrls.isEmpty) {
+      throw noAPKFound;
+    }
+    var version = html2.querySelector('span.active.accent_color')?.innerHtml;
+    if (version == null) {
+      throw couldNotFindLatestVersion;
+    }
+    return APKDetails(version, apkUrls);
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    String temp = standardUrl.substring(standardUrl.indexOf('://') + 3);
+    List<String> names = temp.substring(temp.indexOf('/') + 1).split('/');
+    return AppNames(names[1], names[2]);
+  }
+
+  @override
+  List<List<GeneratedFormItem>> additionalDataFormItems = [];
+
+  @override
+  List<String> additionalDataDefaults = [];
+
+  @override
+  List<GeneratedFormItem> moreSourceSettingsFormItems = [];
+}

lib/app_sources/fdroid.dart

@@ -26,6 +26,9 @@ class FDroid implements AppSource {
   @override
   String? changeLogPageFromStandardUrl(String standardUrl) => null;
 
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async => apkUrl;
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {

lib/app_sources/github.dart

@@ -33,6 +33,9 @@ class GitHub implements AppSource {
   String? changeLogPageFromStandardUrl(String standardUrl) =>
       '$standardUrl/releases';
 
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async => apkUrl;
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {

lib/app_sources/gitlab.dart

@@ -22,6 +22,9 @@ class GitLab implements AppSource {
   String? changeLogPageFromStandardUrl(String standardUrl) =>
       '$standardUrl/-/releases';
 
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async => apkUrl;
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {

lib/app_sources/izzyondroid.dart

@@ -20,6 +20,9 @@ class IzzyOnDroid implements AppSource {
   @override
   String? changeLogPageFromStandardUrl(String standardUrl) => null;
 
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async => apkUrl;
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {

lib/app_sources/mullvad.dart

@@ -21,6 +21,9 @@ class Mullvad implements AppSource {
   String? changeLogPageFromStandardUrl(String standardUrl) =>
       'https://github.com/mullvad/mullvadvpn-app/blob/master/CHANGELOG.md';
 
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async => apkUrl;
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {

lib/app_sources/signal.dart

@@ -15,6 +15,9 @@ class Signal implements AppSource {
   @override
   String? changeLogPageFromStandardUrl(String standardUrl) => null;
 
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async => apkUrl;
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {

lib/app_sources/sourceforge.dart

@@ -20,6 +20,9 @@ class SourceForge implements AppSource {
   @override
   String? changeLogPageFromStandardUrl(String standardUrl) => null;
 
+  @override
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async => apkUrl;
+
   @override
   Future<APKDetails> getLatestAPKDetails(
       String standardUrl, List<String> additionalData) async {

lib/providers/apps_provider.dart

@@ -64,6 +64,9 @@ class AppsProvider with ChangeNotifier {
   }
 
   Future<ApkFile> downloadApp(String apkUrl, String appId) async {
+    apkUrl = await SourceProvider()
+        .getSource(apps[appId]!.app.url)
+        .apkUrlPrefetchModifier(apkUrl);
     StreamedResponse response =
         await Client().send(Request('GET', Uri.parse(apkUrl)));
     File downloadFile =
@@ -420,7 +423,10 @@ class _APKPickerState extends State<APKPicker> {
         Text('${widget.app.name} has more than one package:'),
         const SizedBox(height: 16),
         ...widget.app.apkUrls.map((u) => RadioListTile<String>(
-            title: Text(Uri.parse(u).pathSegments.last),
+            title: Text(Uri.parse(u)
+                .pathSegments
+                .where((element) => element.isNotEmpty)
+                .last),
             value: u,
             groupValue: apkUrl,
             onChanged: (String? val) {

lib/providers/source_provider.dart

@@ -4,6 +4,7 @@
 import 'dart:convert';
 
 import 'package:html/dom.dart';
+import 'package:obtainium/app_sources/apkmirror.dart';
 import 'package:obtainium/app_sources/fdroid.dart';
 import 'package:obtainium/app_sources/github.dart';
 import 'package:obtainium/app_sources/gitlab.dart';
@@ -137,6 +138,7 @@ abstract class AppSource {
   late List<String> additionalDataDefaults;
   late List<GeneratedFormItem> moreSourceSettingsFormItems;
   String? changeLogPageFromStandardUrl(String standardUrl);
+  Future<String> apkUrlPrefetchModifier(String apkUrl);
 }
 
 abstract class MassAppSource {
@@ -154,7 +156,8 @@ class SourceProvider {
     IzzyOnDroid(),
     Mullvad(),
     Signal(),
-    SourceForge()
+    SourceForge(),
+    APKMirror()
   ];
 
   // Add more mass source classes here so they are available via the service