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PrivaPub/Services/ClientToServer/Private/IPrivateAvatarUsersService.cs

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+using Microsoft.Extensions.Localization;
+
+using MongoDB.Entities;
+
+using PrivaPub.ClientModels;
+using PrivaPub.ClientModels.User.Avatar;
+using PrivaPub.Models;
+using PrivaPub.Models.User;
+using PrivaPub.Resources;
+using PrivaPub.StaticServices;
+
+using System.Security.Cryptography;
+
+namespace PrivaPub.Services.ClientToServer.Private
+{
+	public interface IPrivateAvatarUsersService
+	{
+		Task<WebResult> UpdateAvatar(UpdateAvatarForm form);
+		Task<WebResult> InsertAvatar(InsertAvatarForm form);
+	}
+
+	public class PrivateAvatarUsersService : IPrivateAvatarUsersService
+	{
+		readonly AppConfigurationService _appConfiguration;
+		readonly DbEntities _dbEntities;
+		readonly IStringLocalizer<GenericRes> _localizer;
+		readonly ILogger<PrivateAvatarUsersService> _logger;
+
+		public PrivateAvatarUsersService(AppConfigurationService appConfiguration,
+			DbEntities dbEntities,
+			IStringLocalizer<GenericRes> localizer,
+			ILogger<PrivateAvatarUsersService> logger)
+		{
+			_appConfiguration = appConfiguration;
+			_dbEntities = dbEntities;
+			_localizer = localizer;
+			_logger = logger;
+		}
+
+		public async Task<WebResult> InsertAvatar(InsertAvatarForm form)
+		{
+			var result = new WebResult();
+			try
+			{
+				if (await _dbEntities.Avatars.Match(a => a.UserName == form.UserName).ExecuteAnyAsync())
+					return result.Invalidate(_localizer["The username '{0}' is already take.", form.UserName]);
+
+				if (!await IsValidRootUser(form.RootId))
+					return result.Invalidate(_localizer["You can't do this action because of your account status."]);
+
+				var newAvatar = new Avatar
+				{
+					Name = form.Name,
+					UserName = form.UserName,
+					Biography = form.Biography,
+					Fields = form.Fields,
+					PersonalNote = form.PersonalNote,
+				};
+				if (!form.Settings.IsDefault)
+					newAvatar.Settings = new()
+					{
+						IsDefault = false,
+						DarkThemeIndexColour = form.Settings.DarkThemeIndexColour,
+						IconsThemeIndexColour = form.Settings.IconsThemeIndexColour,
+						LanguageCode = form.Settings.LanguageCode,
+						LightThemeIndexColour = form.Settings.LightThemeIndexColour,
+						PreferSystemTheming = form.Settings.PreferSystemTheming,
+						ThemeIsDarkGray = form.Settings.ThemeIsDarkGray,
+						ThemeIsDarkMode = form.Settings.ThemeIsDarkMode,
+						ThemeIsLightGray = form.Settings.ThemeIsLightGray
+					};
+
+				if (_appConfiguration.AppConfiguration == default)
+					await _appConfiguration.Init();
+
+				newAvatar.Url = _appConfiguration.AppConfiguration.BackendBaseAddress + $"/peasants/{form.UserName}";
+				newAvatar.Domain = _appConfiguration.AppConfiguration.BackendBaseAddress;
+				newAvatar.InboxURL = _appConfiguration.AppConfiguration.BackendBaseAddress + $"/peasants/{form.UserName}/mouth";
+				newAvatar.OutboxURL = _appConfiguration.AppConfiguration.BackendBaseAddress + $"/peasants/{form.UserName}/anus";
+				var rsa = RSA.Create();
+				newAvatar.PrivateKey = rsa.ExportRSAPrivateKeyPem();
+				newAvatar.PublicKey = rsa.ExportRSAPublicKeyPem();
+
+				await newAvatar.SaveAsync();
+				result.Data = newAvatar;
+
+				return result;
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, $"{nameof(PrivateAvatarUsersService)}.{nameof(InsertAvatar)}");
+				return result.Invalidate(_localizer["Error: {0}", ex.ToString()], exception: ex);
+			}
+		}
+
+		public async Task<WebResult> UpdateAvatar(UpdateAvatarForm form)
+		{
+			var result = new WebResult();
+			try
+			{
+
+			}
+			catch (Exception ex)
+			{
+				_logger.LogError(ex, $"{nameof(PrivateAvatarUsersService)}.{nameof(UpdateAvatar)}");
+				return result.Invalidate(_localizer["Error: {0}", ex.ToString()], exception: ex);
+			}
+		}
+
+		async ValueTask<bool> IsValidRootUser(string rootUserId) =>
+			await _dbEntities.RootUsers.MatchID(rootUserId)
+			.Match(ru => !ru.DeletedAt.HasValue)
+			.ExecuteAnyAsync();
+	}
+}