chore: added type safety to Dio requests and fixed unsafe type casting

lib/modules/phigros/services/phigros_api_service.dart

@@ -1,11 +1,14 @@
 import 'dart:convert';
 import 'dart:typed_data';
+
 import 'package:dio/dio.dart';
 
 /// Phigros API 服务
 class PhigrosApiService {
   static final PhigrosApiService _instance = PhigrosApiService._internal();
+
   factory PhigrosApiService() => _instance;
+
   static PhigrosApiService get instance => _instance;
 
   PhigrosApiService._internal();
@@ -32,13 +35,16 @@ class PhigrosApiService {
   /// 返回用户信息，包括昵称、头像等
   Future<PhigrosUserInfo> getUserInfo(String sessionToken) async {
     try {
-      final response = await _dio.get(
+      final response = await _dio.get<Map<String, dynamic>>(
         '/users/me',
         options: Options(headers: {'X-LC-Session': sessionToken}),
       );
-
+      final responseData = response.data;
+      if (responseData == null) {
+        throw Exception("获取用户信息失败: 空返回");
+      }
       if (response.statusCode == 200) {
-        return PhigrosUserInfo.fromJson(response.data);
+        return PhigrosUserInfo.fromJson(responseData);
       } else {
         throw Exception('获取用户信息失败: ${response.statusCode}');
       }
@@ -58,14 +64,14 @@ class PhigrosApiService {
   /// 返回游戏存档数据
   Future<PhigrosGameSave?> getGameSave(String sessionToken) async {
     try {
-      final response = await _dio.get(
+      final response = await _dio.get<Map<String, dynamic>>(
         '/classes/_GameSave',
         queryParameters: {'limit': 1},
         options: Options(headers: {'X-LC-Session': sessionToken}),
       );
 
       if (response.statusCode == 200) {
-        final results = response.data['results'] as List?;
+        final results = response.data?['results'] as List?;
         if (results != null && results.isNotEmpty) {
           return PhigrosGameSave.fromJson(results[0]);
         }

lib/modules/phigros/services/phigros_resource_api_service.dart

@@ -1,16 +1,18 @@
 import 'dart:convert';
 
 import 'package:dio/dio.dart';
-import 'package:rank_hub/models/phigros/song.dart';
-import 'package:rank_hub/models/phigros/collection.dart';
 import 'package:rank_hub/models/phigros/avatar.dart';
 import 'package:rank_hub/models/phigros/chart.dart';
+import 'package:rank_hub/models/phigros/collection.dart';
+import 'package:rank_hub/models/phigros/song.dart';
 
 /// Phigros 资源 API 服务
 class PhigrosResourceApiService {
   static final PhigrosResourceApiService _instance =
       PhigrosResourceApiService._internal();
+
   factory PhigrosResourceApiService() => _instance;
+
   static PhigrosResourceApiService get instance => _instance;
 
   PhigrosResourceApiService._internal();
@@ -28,10 +30,11 @@ class PhigrosResourceApiService {
   Future<Map<String, Map<String, double>>> fetchDifficulties() async {
     try {
       print('📥 开始获取定数表...');
-      final response = await _dio.get('/info/difficulty.tsv');
+      final response = await _dio.get<String>('/info/difficulty.tsv');
+      final responseData = response.data;
 
-      if (response.statusCode == 200 && response.data != null) {
-        final lines = (response.data as String).split('\n');
+      if (response.statusCode == 200 && responseData != null) {
+        final lines = responseData.split('\n');
         final difficulties = <String, Map<String, double>>{};
         int invalidLineCount = 0;
 
@@ -86,11 +89,12 @@ class PhigrosResourceApiService {
       print('📥 开始获取乐曲信息...');
 
       // 同时获取乐曲信息和定数表
-      final infoResponse = await _dio.get('/info/info.tsv');
+      final infoResponse = await _dio.get<String>('/info/info.tsv');
       final difficulties = await fetchDifficulties();
+      final infoResponseData = infoResponse.data;
 
-      if (infoResponse.statusCode == 200 && infoResponse.data != null) {
-        final lines = (infoResponse.data as String).split('\n');
+      if (infoResponse.statusCode == 200 && infoResponseData != null) {
+        final lines = infoResponseData.split('\n');
         final songs = <PhigrosSong>[];
         int missingDifficultyCount = 0;
 
@@ -170,10 +174,11 @@ class PhigrosResourceApiService {
   Future<List<PhigrosCollection>> fetchCollections() async {
     try {
       print('📥 开始获取收藏品...');
-      final response = await _dio.get('/info/collection.tsv');
+      final response = await _dio.get<String>('/info/collection.tsv');
+      final responseData = response.data;
 
-      if (response.statusCode == 200 && response.data != null) {
-        final lines = (response.data as String).split('\n');
+      if (response.statusCode == 200 && responseData != null) {
+        final lines = responseData.split('\n');
         final collections = <PhigrosCollection>[];
 
         for (final line in lines) {
@@ -200,10 +205,11 @@ class PhigrosResourceApiService {
   Future<List<PhigrosAvatar>> fetchAvatars() async {
     try {
       print('📥 开始获取头像列表...');
-      final response = await _dio.get('/info/avatar.txt');
+      final response = await _dio.get<String>('/info/avatar.txt');
+      final responseData = response.data;
 
-      if (response.statusCode == 200 && response.data != null) {
-        final lines = (response.data as String).split('\n');
+      if (response.statusCode == 200 && responseData != null) {
+        final lines = responseData.split('\n');
         final avatars = <PhigrosAvatar>[];
 
         for (final line in lines) {
@@ -233,11 +239,12 @@ class PhigrosResourceApiService {
       print('📥 开始获取谱面: $songId - $difficulty');
       print('   URL: $url');
 
-      final response = await _dio.get(url);
+      final response = await _dio.get<String>(url);
+      final responseData = response.data;
 
-      if (response.statusCode == 200 && response.data != null) {
+      if (response.statusCode == 200 && responseData != null) {
         final chart = PhigrosChart.fromJson(
-          jsonDecode(response.data) as Map<String, dynamic>,
+          jsonDecode(responseData) as Map<String, dynamic>,
         );
         print('✅ 获取谱面完成: ${chart.totalNotes} 个音符');
         return chart;

lib/modules/phigros/services/taptap_service.dart

@@ -1,8 +1,9 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:math';
-import 'package:dio/dio.dart';
+
 import 'package:crypto/crypto.dart';
+import 'package:dio/dio.dart';
 
 class ShareClient {
   final Dio _dio;
@@ -160,13 +161,13 @@ open.tapapis.cn
   ) async {
     final auth = generateMac(token);
 
-    final resp = await _dio.get(
+    final resp = await _dio.get<Map<String, dynamic>>(
       'https://open.tapapis.cn/account/basic-info/v1',
       queryParameters: {'client_id': clientId},
       options: Options(headers: {...tapHeaders, 'Authorization': auth}),
     );
 
-    return resp.data['data'];
+    return resp.data!['data'];
   }
 
   Future<String> registerUser(