added wallet functionality

lib/http/http.dart

@@ -1,6 +1,7 @@
 import 'package:dio/dio.dart';
 import 'package:flutter_dotenv/flutter_dotenv.dart';
 import 'package:logger/logger.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 var logger = Logger(printer: PrettyPrinter());
 
@@ -24,9 +25,22 @@ class Http {
     );
   }
 
+  Future<Map<String, String>> getHeaders() async {
+    Map<String, String> headers = {'Content-Type': 'application/json'};
+
+    var prefs = await SharedPreferences.getInstance();
+    String token = prefs.getString("token") ?? "";
+
+    headers['Authorization'] = 'Bearer $token';
+
+    return headers;
+  }
+
   Future<dynamic> get(String url) async {
+    Map<String, String> headers = await getHeaders();
+
     Response response;
-    response = await dio.get(baseUrl + url);
+    response = await dio.get(baseUrl + url, options: Options(headers: headers));
     logger.i(response.data.toString());
     return response.data;
   }
@@ -45,7 +59,7 @@ class Http {
   }
 
   Future<dynamic> put(String url, dynamic data) async {
-    Map<String, String> headers = {'Content-Type': 'application/json'};
+    Map<String, String> headers = await getHeaders();
 
     Response response;
     response = await dio.put(
@@ -58,8 +72,13 @@ class Http {
   }
 
   Future<dynamic> delete(String url) async {
+    Map<String, String> headers = await getHeaders();
+
     Response response;
-    response = await dio.delete(baseUrl + url);
+    response = await dio.delete(
+      baseUrl + url,
+      options: Options(headers: headers),
+    );
     logger.i(response.data.toString());
     return response.data;
   }