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| author | 杨宇千 <crupest@outlook.com> | 2019-10-31 15:02:03 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-10-31 15:02:03 +0800 |
| commit | 2de7fa95bb5ad0a10f74fb390bac464a250dee42 (patch) | |
| tree | ba42530cf4f13621a7a3a7ff661e383117119883 /Timeline/Services/UserDetailService.cs | |
| parent | f08f53d6fcd9baf9dd3b95209f7c7448ae8168d4 (diff) | |
| parent | cf2055f956695bc0b9ecdb6d8023d0d199b98462 (diff) | |
| download | timeline-2de7fa95bb5ad0a10f74fb390bac464a250dee42.tar.gz timeline-2de7fa95bb5ad0a10f74fb390bac464a250dee42.tar.bz2 timeline-2de7fa95bb5ad0a10f74fb390bac464a250dee42.zip | |
Merge pull request #53 from crupest/nickname
Add nickname support.
Diffstat (limited to 'Timeline/Services/UserDetailService.cs')
| -rw-r--r-- | Timeline/Services/UserDetailService.cs | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/Timeline/Services/UserDetailService.cs b/Timeline/Services/UserDetailService.cs new file mode 100644 index 00000000..0b24e4e2 --- /dev/null +++ b/Timeline/Services/UserDetailService.cs @@ -0,0 +1,102 @@ +using Microsoft.Extensions.Logging;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using Timeline.Entities;
+using static Timeline.Resources.Services.UserDetailService;
+
+namespace Timeline.Services
+{
+ public interface IUserDetailService
+ {
+ /// <summary>
+ /// Get the nickname of the user with given username.
+ /// If the user does not set a nickname, the username is returned as the nickname.
+ /// </summary>
+ /// <param name="username">The username of the user to get nickname of.</param>
+ /// <returns>The nickname of the user.</returns>
+ /// <exception cref="ArgumentNullException">Thrown when <paramref name="username"/> is null.</exception>
+ /// <exception cref="UsernameBadFormatException">Thrown when <paramref name="username"/> is of bad format.</exception>
+ /// <exception cref="UserNotExistException">Thrown when the user does not exist.</exception>
+ Task<string> GetNickname(string username);
+
+ /// <summary>
+ /// Set the nickname of the user with given username.
+ /// </summary>
+ /// <param name="username">The username of the user to set nickname of.</param>
+ /// <param name="nickname">The nickname. Pass null to unset.</param>
+ /// <exception cref="ArgumentNullException">Thrown when <paramref name="username"/> is null.</exception>
+ /// <exception cref="ArgumentException">Thrown when <paramref name="nickname"/> is not null but its length is bigger than 10.</exception>
+ /// <exception cref="UsernameBadFormatException">Thrown when <paramref name="username"/> is of bad format.</exception>
+ /// <exception cref="UserNotExistException">Thrown when the user does not exist.</exception>
+ Task SetNickname(string username, string? nickname);
+ }
+
+ public class UserDetailService : IUserDetailService
+ {
+ private readonly DatabaseContext _database;
+
+ private readonly ILogger<UserDetailService> _logger;
+
+ public UserDetailService(DatabaseContext database, ILogger<UserDetailService> logger)
+ {
+ _database = database;
+ _logger = logger;
+ }
+
+ public async Task<string> GetNickname(string username)
+ {
+ var userId = await DatabaseExtensions.CheckAndGetUser(_database.Users, username);
+ var nickname = _database.UserDetails.Where(d => d.UserId == userId).Select(d => new { d.Nickname }).SingleOrDefault()?.Nickname;
+ return nickname ?? username;
+ }
+
+ public async Task SetNickname(string username, string? nickname)
+ {
+ if (nickname != null && nickname.Length > 10)
+ {
+ throw new ArgumentException(ExceptionNicknameTooLong, nameof(nickname));
+ }
+ var userId = await DatabaseExtensions.CheckAndGetUser(_database.Users, username);
+ var userDetail = _database.UserDetails.Where(d => d.UserId == userId).SingleOrDefault();
+ if (nickname == null)
+ {
+ if (userDetail == null || userDetail.Nickname == null)
+ {
+ return;
+ }
+ else
+ {
+ userDetail.Nickname = null;
+ await _database.SaveChangesAsync();
+ _logger.LogInformation(LogEntityNicknameSetToNull, userId);
+ }
+ }
+ else
+ {
+ var create = userDetail == null;
+ if (create)
+ {
+ userDetail = new UserDetail
+ {
+ UserId = userId
+ };
+ }
+ userDetail!.Nickname = nickname;
+ if (create)
+ {
+ _database.UserDetails.Add(userDetail);
+ }
+ await _database.SaveChangesAsync();
+ if (create)
+ {
+ _logger.LogInformation(LogEntityNicknameCreate, userId, nickname);
+ }
+ else
+ {
+ _logger.LogInformation(LogEntityNicknameSetNotNull, userId, nickname);
+ }
+ }
+ }
+ }
+}
|