…

1 files changed, 27 insertions, 2 deletions

diff --git a/BackEnd/Timeline/Services/User/IUserService.cs b/BackEnd/Timeline/Services/User/IUserService.cs
index 745bd524..6ea9a4d2 100644
--- a/BackEnd/Timeline/Services/User/IUserService.cs
+++ b/BackEnd/Timeline/Services/User/IUserService.cs
@@ -5,8 +5,33 @@ using Timeline.Entities;
 

 namespace Timeline.Services.User

 {

-    public interface IUserService : IBasicUserService

-    {

+    public interface IUserService

+    {
+        /// <summary>

+        /// Check if a user exists.

+        /// </summary>

+        /// <param name="id">The id of the user.</param>

+        /// <returns>True if exists. Otherwise false.</returns>

+        Task<bool> CheckUserExistenceAsync(long id);

+

+        /// <summary>

+        /// Get the user id of given username.

+        /// </summary>

+        /// <param name="username">Username of the user.</param>

+        /// <returns>The id of the user.</returns>

+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="username"/> is null.</exception>

+        /// <exception cref="ArgumentException">Thrown when <paramref name="username"/> is of bad format.</exception>

+        /// <exception cref="EntityNotExistException">Thrown when the user with given username does not exist.</exception>

+        Task<long> GetUserIdByUsernameAsync(string username);

+

+        /// <summary>

+        /// Get the username modified time of a user.

+        /// </summary>

+        /// <param name="userId">User id.</param>

+        /// <returns>The time.</returns>

+        /// <exception cref="EntityNotExistException">Thrown when user does not exist.</exception>

+        Task<DateTime> GetUsernameLastModifiedTimeAsync(long userId);

+

         /// <summary>

         /// Try to get a user by id.

         /// </summary>