add private key

Author: Sergey Khomushin

lib/emailjs.dart

@@ -3,57 +3,65 @@ library emailjs;
 import 'dart:convert';
 import 'package:http/http.dart' as http;
 
+import 'src/models/emailjs_response_status.dart';
 import 'src/utils/validate_params.dart';
 import 'src/api/send_json.dart';
+import 'src/types/options.dart';
 
 class EmailJS {
   /// Public Key specified in the [init] method
   static String _publicKey = '';
 
+  /// Private Key specified in the [init] method
+  static String? _privateKey;
+
   /// API host specified in the [init] method
-  static String _origin = 'api.emailjs.com';
+  static String _host = 'api.emailjs.com';
 
   /// HTTP Client specified in the [init] method
   static http.Client _httpClient = http.Client();
 
   /// Global configuration for EmailJS
   ///
-  /// Sets globally the [publicKey] for the application
+  /// Sets globally the EmailJS [options]
   static void init(
-    String publicKey, [
-    String? origin,
+    Options options, [
+    String? host,
     http.Client? httpClient,
   ]) {
-    EmailJS._publicKey = publicKey;
-    EmailJS._origin = origin ?? 'api.emailjs.com';
+    EmailJS._publicKey = options.publicKey;
+    EmailJS._privateKey = options.privateKey;
+    EmailJS._host = host ?? 'api.emailjs.com';
     EmailJS._httpClient = httpClient ?? http.Client();
   }
 
   /// Sends the email through the [serviceID] using the ready-made [templateID].
   ///
   /// It's possible to pass [templatePrams] dynamic variables,
-  /// and set the [publicKey] for this call.
-  static Future<String> send(
+  /// and set the [options] for this call.
+  static Future<EmailJSResponseStatus> send(
     String serviceID,
     String templateID, [
     Map<String, dynamic>? templatePrams,
-    String? publicKey,
+    Options? options,
   ]) async {
-    final pubKey = publicKey ?? EmailJS._publicKey;
+    final pubKey = options?.publicKey ?? EmailJS._publicKey;
+    final prKey = options?.privateKey ?? EmailJS._privateKey;
 
     validateParams(pubKey, serviceID, templateID);
 
     final Map<String, dynamic> params = {
       'lib_version': '0.0.3',
       'user_id': pubKey,
+      'accessToken': prKey,
       'service_id': serviceID,
       'template_id': templateID,
       'template_params': templatePrams,
     };
 
     return await sendJSON(
       EmailJS._httpClient,
-      Uri.https(EmailJS._origin, 'api/v1.0/email/send'),
+      Uri.https(EmailJS._host, 'api/v1.0/email/send'),
       json.encode(params),
     );
   }