Added Neutron Code as a Source

lib/app_sources/neutroncode.dart

@@ -0,0 +1,109 @@
+import 'dart:convert';
+import 'package:html/parser.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class NeutronCode extends AppSource {
+  NeutronCode() {
+    host = 'neutroncode.com';
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/downloads/file/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(name);
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) => standardUrl;
+
+  String monthNameToNumberString(String s) {
+    switch (s.toLowerCase()) {
+      case 'january':
+        return '01';
+      case 'february':
+        return '02';
+      case 'march':
+        return '03';
+      case 'april':
+        return '04';
+      case 'may':
+        return '05';
+      case 'june':
+        return '06';
+      case 'july':
+        return '07';
+      case 'august':
+        return '08';
+      case 'september':
+        return '09';
+      case 'october':
+        return '10';
+      case 'november':
+        return '11';
+      case 'december':
+        return '12';
+      default:
+        throw ArgumentError('Invalid month name: $s');
+    }
+  }
+
+  customDateParse(String dateString) {
+    List<String> parts = dateString.split(' ');
+    if (parts.length != 3) {
+      return null;
+    }
+    String result = '';
+    for (var s in parts.reversed) {
+      try {
+        try {
+          int.parse(s);
+          result += '$s-';
+        } catch (e) {
+          result += '${monthNameToNumberString(s)}-';
+        }
+      } catch (e) {
+        return null;
+      }
+    }
+    return result.substring(0, result.length - 1);
+  }
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+    String standardUrl,
+    Map<String, dynamic> additionalSettings,
+  ) async {
+    Response res = await get(Uri.parse(standardUrl));
+    if (res.statusCode == 200) {
+      var http = parse(res.body);
+      var name = http.querySelector('.pd-title')?.innerHtml;
+      var filename = http.querySelector('.pd-filename .pd-float')?.innerHtml;
+      if (filename == null) {
+        throw NoReleasesError();
+      }
+      var version =
+          http.querySelector('.pd-version-txt')?.nextElementSibling?.innerHtml;
+      if (version == null) {
+        throw NoVersionError();
+      }
+      String? apkUrl = 'https://$host/download/$filename';
+      var dateStringOriginal =
+          http.querySelector('.pd-date-txt')?.nextElementSibling?.innerHtml;
+      var dateString = dateStringOriginal != null
+          ? (customDateParse(dateStringOriginal))
+          : null;
+
+      return APKDetails(version, [apkUrl],
+          AppNames(runtimeType.toString(), name ?? standardUrl.split('/').last),
+          releaseDate: dateString != null ? DateTime.parse(dateString) : null);
+    } else {
+      throw getObtainiumHttpError(res);
+    }
+  }
+}