From 79ab2b304d93b1029515bd3f954db4e5a73f4168 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 30 Jan 2020 20:26:52 +0800
Subject: ...

---
 Timeline/Services/DatabaseExtensions.cs | 36 ---------------------------------
 1 file changed, 36 deletions(-)
 delete mode 100644 Timeline/Services/DatabaseExtensions.cs

(limited to 'Timeline/Services/DatabaseExtensions.cs')

diff --git a/Timeline/Services/DatabaseExtensions.cs b/Timeline/Services/DatabaseExtensions.cs
deleted file mode 100644
index e77dd01a..00000000
--- a/Timeline/Services/DatabaseExtensions.cs
+++ /dev/null
@@ -1,36 +0,0 @@
-using Microsoft.EntityFrameworkCore;
-using System;
-using System.Linq;
-using System.Threading.Tasks;
-using Timeline.Entities;
-using Timeline.Models.Validation;
-
-namespace Timeline.Services
-{
-    internal static class DatabaseExtensions
-    {
-        private static readonly UsernameValidator usernameValidator = new UsernameValidator();
-
-        /// <summary>
-        /// Check the existence and get the id of the user.
-        /// </summary>
-        /// <param name="username">The username of the user.</param>
-        /// <returns>The user id.</returns>
-        /// <exception cref="ArgumentNullException">Thrown if <paramref name="username"/> is null.</exception>
-        /// <exception cref="UsernameBadFormatException">Thrown if <paramref name="username"/> is of bad format.</exception>
-        /// <exception cref="UserNotExistException">Thrown if user does not exist.</exception>
-        internal static async Task<long> CheckAndGetUser(DbSet<UserEntity> userDbSet, string? username)
-        {
-            if (username == null)
-                throw new ArgumentNullException(nameof(username));
-            var (result, message) = usernameValidator.Validate(username);
-            if (!result)
-                throw new UsernameBadFormatException(username, message);
-
-            var userId = await userDbSet.Where(u => u.Username == username).Select(u => u.Id).SingleOrDefaultAsync();
-            if (userId == 0)
-                throw new UserNotExistException(username);
-            return userId;
-        }
-    }
-}
-- 
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