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1 files changed, 0 insertions, 95 deletions

diff --git a/BackEnd/Timeline/Services/BasicUserService.cs b/BackEnd/Timeline/Services/BasicUserService.cs
deleted file mode 100644
index de0829ee..00000000
--- a/BackEnd/Timeline/Services/BasicUserService.cs
+++ /dev/null
@@ -1,95 +0,0 @@
-using Microsoft.EntityFrameworkCore;

-using System;

-using System.Linq;

-using System.Threading.Tasks;

-using Timeline.Entities;

-using Timeline.Models.Validation;

-using Timeline.Services.Exceptions;

-

-namespace Timeline.Services

-{

-    /// <summary>

-    /// This service provide some basic user features, which should be used internally for other services.

-    /// </summary>

-    public interface IBasicUserService

-    {

-        /// <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> CheckUserExistence(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="UserNotExistException">Thrown when the user with given username does not exist.</exception>

-        Task<long> GetUserIdByUsername(string username);

-

-        /// <summary>

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

-        /// </summary>

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

-        /// <returns>The time.</returns>

-        /// <exception cref="UserNotExistException">Thrown when user does not exist.</exception>

-        Task<DateTime> GetUsernameLastModifiedTime(long userId);

-    }

-

-    public class BasicUserService : IBasicUserService

-    {

-        private readonly DatabaseContext _database;

-

-        private readonly UsernameValidator _usernameValidator = new UsernameValidator();

-

-        public BasicUserService(DatabaseContext database)

-        {

-            _database = database;

-        }

-

-        public async Task<bool> CheckUserExistence(long id)

-        {

-            return await _database.Users.AnyAsync(u => u.Id == id);

-        }

-

-        public async Task<long> GetUserIdByUsername(string username)

-        {

-            if (username == null)

-                throw new ArgumentNullException(nameof(username));

-

-            if (!_usernameValidator.Validate(username, out var message))

-                throw new ArgumentException(message);

-

-            var entity = await _database.Users.Where(user => user.Username == username).Select(u => new { u.Id }).SingleOrDefaultAsync();

-

-            if (entity == null)

-                throw new UserNotExistException(username);

-

-            return entity.Id;

-        }

-

-        public async Task<DateTime> GetUsernameLastModifiedTime(long userId)

-        {

-            var entity = await _database.Users.Where(u => u.Id == userId).Select(u => new { u.UsernameChangeTime }).SingleOrDefaultAsync();

-

-            if (entity is null)

-                throw new UserNotExistException(userId);

-

-            return entity.UsernameChangeTime;

-        }

-    }

-

-    public static class BasicUserServiceExtensions

-    {

-        public static async Task ThrowIfUserNotExist(this IBasicUserService service, long userId)

-        {

-            if (!await service.CheckUserExistence(userId))

-            {

-                throw new UserNotExistException(userId);

-            }

-        }

-    }

-}