Added Jenkins Source (#514)

lib/app_sources/jenkins.dart

@@ -0,0 +1,66 @@
+import 'dart:convert';
+
+import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class Jenkins extends AppSource {
+  @override
+  String trimJobUrl(String url) {
+    RegExp standardUrlRegEx = RegExp('.*/job/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url);
+    if (match == null) {
+      throw InvalidURLError(name);
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) =>
+      '$standardUrl/-/releases';
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+    String standardUrl,
+    Map<String, dynamic> additionalSettings,
+  ) async {
+    standardUrl = trimJobUrl(standardUrl);
+    Response res =
+        await get(Uri.parse('$standardUrl/lastSuccessfulBuild/api/json'));
+    if (res.statusCode == 200) {
+      var json = jsonDecode(res.body);
+      var releaseDate = json['timestamp'] == null
+          ? null
+          : DateTime.fromMillisecondsSinceEpoch(json['timestamp'] as int);
+      var version =
+          json['number'] == null ? null : (json['number'] as int).toString();
+      if (version == null) {
+        throw NoVersionError();
+      }
+      var apkUrls = (json['artifacts'] as List<dynamic>)
+          .map((e) {
+            var path = (e['relativePath'] as String?);
+            if (path != null && path.isNotEmpty) {
+              path = '$standardUrl/lastSuccessfulBuild/artifact/$path';
+            }
+            return path == null
+                ? const MapEntry<String, String>('', '')
+                : MapEntry<String, String>(
+                    (e['fileName'] ?? e['relativePath']) as String, path);
+          })
+          .where((url) =>
+              url.value.isNotEmpty && url.key.toLowerCase().endsWith('.apk'))
+          .toList();
+      if (apkUrls.isEmpty) {
+        throw NoAPKError();
+      }
+      return APKDetails(
+          version,
+          apkUrls,
+          releaseDate: releaseDate,
+          AppNames(Uri.parse(standardUrl).host, standardUrl.split('/').last));
+    } else {
+      throw getObtainiumHttpError(res);
+    }
+  }
+}

lib/providers/source_provider.dart

@@ -15,6 +15,7 @@ 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/html.dart';
+import 'package:obtainium/app_sources/jenkins.dart';
 import 'package:obtainium/app_sources/mullvad.dart';
 import 'package:obtainium/app_sources/neutroncode.dart';
 import 'package:obtainium/app_sources/signal.dart';
@@ -440,6 +441,7 @@ class SourceProvider {
         FDroid(),
         IzzyOnDroid(),
         FDroidRepo(),
+        Jenkins(),
         SourceForge(),
         APKMirror(),
         Mullvad(),