Import data from GoogleSheet

WebAPI/GoogleSheetsHelper.cs

@@ -0,0 +1,35 @@
+using Google.Apis.Auth.OAuth2;
+using Google.Apis.Services;
+using Google.Apis.Sheets.v4;
+
+namespace WebAPI
+{
+    public class GoogleSheetsHelper
+    {
+        public SheetsService Service { get; set; }
+        const string APPLICATION_NAME = "Diuna";
+        static readonly string[] Scopes = { SheetsService.Scope.Spreadsheets };
+        public GoogleSheetsHelper()
+        {
+            InitializeService();
+        }
+        private void InitializeService()
+        {
+            var credential = GetCredentialsFromFile();
+            Service = new SheetsService(new BaseClientService.Initializer()
+            {
+                HttpClientInitializer = credential,
+                ApplicationName = APPLICATION_NAME
+            });
+        }
+        private GoogleCredential GetCredentialsFromFile()
+        {
+            GoogleCredential credential;
+            using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
+            {
+                credential = GoogleCredential.FromStream(stream).CreateScoped(Scopes);
+            }
+            return credential;
+        }
+    }
+}