Improved GitHub starred import + other tweaks

lib/mass_app_sources/githubstars.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 
 import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/providers/source_provider.dart';
 
 class GitHubStars implements MassAppSource {
@@ -10,23 +11,40 @@ class GitHubStars implements MassAppSource {
   @override
   late List<String> requiredArgs = ['Username'];
 
-  @override
-  Future<List<String>> getUrls(List<String> args) async {
-    if (args.length != requiredArgs.length) {
-      throw 'Wrong number of arguments provided';
-    }
+  Future<List<String>> getOnePageOfUserStarredUrls(
+      String username, int page) async {
     Response res = await get(Uri.parse(
-        'https://api.github.com/users/${args[0]}/starred?per_page=100')); //TODO: Make requests for more pages until you run out
+        'https://api.github.com/users/$username/starred?per_page=100&page=$page'));
     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;
+  }
 }