add first version

aisee_flutter/lib/services/api_service.dart

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+import 'dart:typed_data';
+import 'package:dio/dio.dart';
+import '../utils/app_config.dart';
+
+class ApiService {
+  late final Dio _dio;
+
+  ApiService() {
+    _dio = Dio(BaseOptions(
+      baseUrl: AppConfig.apiBaseUrl,
+      connectTimeout: const Duration(seconds: 10),
+      receiveTimeout: const Duration(seconds: 10),
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    ));
+
+    // 添加日志拦截器
+    _dio.interceptors.add(LogInterceptor(
+      requestBody: false, // 不打印请求体（图片太大）
+      responseBody: true,
+      error: true,
+    ));
+  }
+
+  /// 上传图像到后端
+  Future<Map<String, dynamic>> uploadImage(Uint8List imageBytes) async {
+    try {
+      final formData = FormData.fromMap({
+        'file': MultipartFile.fromBytes(
+          imageBytes,
+          filename: 'image_${DateTime.now().millisecondsSinceEpoch}.jpg',
+        ),
+      });
+
+      final response = await _dio.post(
+        '/api/v1/images/upload',
+        data: formData,
+      );
+
+      return response.data;
+    } catch (e) {
+      print('上传图像失败: $e');
+      rethrow;
+    }
+  }
+
+  /// 请求 AI 分析
+  Future<Map<String, dynamic>> analyzeImage(String imageUrl) async {
+    try {
+      final response = await _dio.post(
+        '/api/v1/analysis/analyze',
+        data: {'image_url': imageUrl},
+      );
+
+      return response.data;
+    } catch (e) {
+      print('分析图像失败: $e');
+      rethrow;
+    }
+  }
+
+  /// 一步到位：上传并分析
+  Future<Map<String, dynamic>> uploadAndAnalyze(Uint8List imageBytes) async {
+    try {
+      // 1. 上传图像
+      final uploadResult = await uploadImage(imageBytes);
+      final imageUrl = uploadResult['url'];
+
+      // 2. 请求分析
+      final analysisResult = await analyzeImage(imageUrl);
+
+      return analysisResult;
+    } catch (e) {
+      print('上传并分析失败: $e');
+      rethrow;
+    }
+  }
+}