Контракты

backend/src/Contracts/Knot.Modules.Admin.Contracts/Knot.Modules.Admin.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Abstractions/IAuthDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace Knot.Modules.Auth.Contracts.Application.Abstractions;
+
+public interface IAuthDbContext
+{
+    DbSet<T> Set<T>() where T : class;
+    Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Abstractions/IAuthUnitOfWork.cs

@@ -0,0 +1,11 @@
+using Knot.Modules.Auth.Contracts.Domain;
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Auth.Contracts.Application.Abstractions;
+
+public interface IAuthUnitOfWork : IUnitOfWork
+{
+    IUserRepository UserRepository { get; }
+    void Add(UserContract user);
+    Task<int> SaveChangesAsync(CancellationToken ct = default);
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Abstractions/IIdentityDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace Knot.Modules.Auth.Contracts.Application.Abstractions;
+
+public interface IIdentityDbContext
+{
+    DbSet<T> Set<T>() where T : class;
+    Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Abstractions/IIdentityUnitOfWork.cs

@@ -0,0 +1,9 @@
+using Knot.Modules.Auth.Contracts.Domain;
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Auth.Contracts.Application.Abstractions;
+
+public interface IIdentityUnitOfWork : IUnitOfWork
+{
+    IUserRepository UserRepository { get; }
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Abstractions/IJwtTokenProvider.cs

@@ -0,0 +1,8 @@
+namespace Knot.Modules.Auth.Contracts.Application.Abstractions;
+
+public interface IJwtTokenProvider
+{
+    string GenerateAccessToken(Guid userId, string username);
+    string GenerateRefreshToken();
+    string Generate(Guid userId, string username, string displayName, string? avatar);
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Auth/DTOs/AuthErrors.cs

@@ -0,0 +1,11 @@
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Auth.Contracts.Application.Auth.DTOs;
+
+public static class AuthErrors
+{
+    public static Error IdentityInvalidCredentials => new("Auth.InvalidCredentials", "Invalid credentials");
+    public static Error IdentityRegistrationDisabled => new("Auth.RegistrationDisabled", "Registration is disabled");
+    public static Error IdentityUsernameNotUnique => new("Auth.UsernameNotUnique", "Username is already taken");
+    public static Error UserNotFound => new("Auth.UserNotFound", "User not found");
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Auth/DTOs/AuthResponseDto.cs

@@ -0,0 +1,16 @@
+namespace Knot.Modules.Auth.Contracts.Application.Auth.DTOs;
+
+public class AuthResponseDto
+{
+    public required string AccessToken { get; set; }
+    public required string RefreshToken { get; set; }
+    public Guid UserId { get; set; }
+    public string Username { get; set; } = string.Empty;
+    public string? DisplayName { get; set; }
+}
+
+public class ResetPasswordDto
+{
+    public required string Token { get; set; }
+    public required string NewPassword { get; set; }
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Users/GetMe/GetMeQuery.cs

@@ -0,0 +1,6 @@
+using Knot.Modules.Auth.Contracts.Domain;
+using MediatR;
+
+namespace Knot.Modules.Auth.Contracts.Application.Users.GetMe;
+
+public record GetMeQuery() : IRequest<UserContract>;

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Users/Login/LoginUserCommand.cs

@@ -0,0 +1,10 @@
+using Knot.Modules.Auth.Contracts.Application.Auth.DTOs;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Auth.Contracts.Application.Users.Login;
+
+public record LoginUserCommand(
+    string Username,
+    string Password
+) : IRequest<Result<AuthResponseDto>>;

backend/src/Contracts/Knot.Modules.Auth.Contracts/Application/Users/Register/RegisterUserCommand.cs

@@ -0,0 +1,14 @@
+using Knot.Modules.Auth.Contracts.Application.Auth.DTOs;
+using Knot.Modules.Auth.Contracts.Domain;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Auth.Contracts.Application.Users.Register;
+
+public record RegisterUserCommand(
+    string Username,
+    string Password,
+    string DisplayName,
+    string? PhoneNumber,
+    bool IsBot = false
+) : IRequest<Result<AuthResponseDto>>;

backend/src/Contracts/Knot.Modules.Auth.Contracts/Domain/IUserRepository.cs

@@ -0,0 +1,16 @@
+namespace Knot.Modules.Auth.Contracts.Domain;
+
+public interface IUserRepository
+{
+    Task<UserContract?> GetByIdAsync(Guid id, CancellationToken cancellationToken = default);
+    Task<List<UserContract>> GetByIdsAsync(IEnumerable<Guid> ids, CancellationToken cancellationToken = default);
+    Task<UserContract?> GetByUsernameAsync(string username, CancellationToken cancellationToken = default);
+    Task<bool> IsUsernameUniqueAsync(string username, CancellationToken cancellationToken = default);
+    Task<List<UserContract>> SearchUsersAsync(string query, CancellationToken cancellationToken = default);
+    Task<bool> IsBannedAsync(Guid userId, CancellationToken cancellationToken = default);
+    Task<UserContract?> GetByRefreshTokenAsync(string refreshToken, CancellationToken cancellationToken = default);
+    Task UpdateAsync(UserContract user, CancellationToken cancellationToken = default);
+    void Add(UserContract user);
+    Task RemoveAsync(UserContract user, CancellationToken cancellationToken = default);
+    void Update(UserContract user);
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Domain/UserContract.cs

@@ -0,0 +1,22 @@
+namespace Knot.Modules.Auth.Contracts.Domain;
+
+public class UserContract
+{
+    public Guid Id { get; set; }
+    public string Username { get; set; } = string.Empty;
+    public string DisplayName { get; set; } = string.Empty;
+    public string PasswordHash { get; set; } = string.Empty;
+    public string? PhoneNumber { get; set; }
+    public string? Email { get; set; }
+    public string? Bio { get; set; }
+    public string? Avatar { get; set; }
+    public DateTime? Birthday { get; set; }
+    public bool IsBot { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime? BannedUntil { get; set; }
+    public bool IsBanned { get; set; }
+    public bool IsOnline { get; set; }
+    public bool IsExternal { get; set; }
+    public string? Domain { get; set; }
+    public DateTime? LastSeen { get; set; }
+}

backend/src/Contracts/Knot.Modules.Auth.Contracts/Knot.Modules.Auth.Contracts.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.4" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Conversations.Contracts/Knot.Modules.Conversations.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Federation.Contracts/Knot.Modules.Federation.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Klipy.Contracts/Knot.Modules.Klipy.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Messaging.Contracts/Knot.Modules.Messaging.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/DTOs/ProfilesErrors.cs

@@ -0,0 +1,12 @@
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Profiles.Contracts.Application.DTOs;
+
+public static class ProfilesErrors
+{
+    public static Error ProfileNotFound => new("Profiles.NotFound", "Profile not found");
+    public static Error UsernameAlreadyExists => new("Profiles.UsernameExists", "Username already exists");
+    public static Error AvatarNotFound => new("Profiles.AvatarNotFound", "Avatar not found");
+    public static Error InvalidAvatarFormat => new("Profiles.InvalidAvatarFormat", "Invalid avatar format");
+    public static Error AvatarUploadFailed => new("Profiles.AvatarUploadFailed", "Avatar upload failed");
+}

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/DTOs/ProfilesRequests.cs

@@ -0,0 +1,21 @@
+using MediatR;
+
+namespace Knot.Modules.Profiles.Contracts.Application.DTOs;
+
+public record SearchProfilesRequest(string Query, int Limit = 20) : IRequest<List<UserProfileDto>>;
+
+public record UpdateProfileRequest(
+    string? DisplayName,
+    string? About,
+    string? Avatar,
+    bool RemoveAvatar = false
+) : IRequest<UserProfileDto>;
+
+public record UpdateSettingsRequest(
+    bool? ShowLastSeen,
+    bool? ShowAvatar,
+    bool? ShowAbout,
+    bool? ShowPhoneNumber,
+    bool? ShowForwardedMessages,
+    bool? ShowAddToGroupPermission
+) : IRequest<UserProfileDto>;

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/DTOs/UserProfileDto.cs

@@ -0,0 +1,14 @@
+namespace Knot.Modules.Profiles.Contracts.Application.DTOs;
+
+public class UserProfileDto
+{
+    public Guid UserId { get; set; }
+    public string? DisplayName { get; set; }
+    public string? Username { get; set; }
+    public string? About { get; set; }
+    public string? Avatar { get; set; }
+    public bool IsBot { get; set; }
+    public DateTime? LastSeen { get; set; }
+    public bool IsPremium { get; set; }
+    public DateTime CreatedAt { get; set; }
+}

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/Profiles/Avatar/UploadAvatar.cs

@@ -0,0 +1,10 @@
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Profiles.Contracts.Application.Profiles.Avatar;
+
+public record UploadAvatarCommand(Stream Stream, string FileName) : IRequest<Result<string>>;
+
+public record DeleteAvatarCommand() : IRequest<Result>;
+
+public record CropAvatarCommand(int X, int Y, int Width, int Height) : IRequest<Result<string>>;

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/Profiles/GetUser/GetProfile.cs

@@ -0,0 +1,9 @@
+using Knot.Modules.Profiles.Contracts.Application.DTOs;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Profiles.Contracts.Application.Profiles.GetUser;
+
+public record GetProfileQuery(Guid UserId) : IRequest<Result<UserProfileDto>>;
+
+public record GetCurrentUserQuery() : IRequest<Result<UserProfileDto>>;

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/Profiles/Search/SearchUsers.cs

@@ -0,0 +1,6 @@
+using Knot.Modules.Profiles.Contracts.Application.DTOs;
+using MediatR;
+
+namespace Knot.Modules.Profiles.Contracts.Application.Profiles.Search;
+
+public record SearchProfilesQuery(string Query, int Limit = 20) : IRequest<List<UserProfileDto>>;

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/Profiles/UpdateProfile/UpdateProfile.cs

@@ -0,0 +1,12 @@
+using Knot.Modules.Profiles.Contracts.Application.DTOs;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Profiles.Contracts.Application.Profiles.UpdateProfile;
+
+public record UpdateProfileCommand(
+    string? DisplayName,
+    string? About,
+    string? Avatar,
+    bool RemoveAvatar = false
+) : IRequest<Result<UserProfileDto>>;

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Application/Profiles/UpdateSettings/UpdateSettings.cs

@@ -0,0 +1,14 @@
+using Knot.Modules.Profiles.Contracts.Application.DTOs;
+using Knot.Shared.Kernel;
+using MediatR;
+
+namespace Knot.Modules.Profiles.Contracts.Application.Profiles.UpdateSettings;
+
+public record UpdateSettingsCommand(
+    bool? ShowLastSeen,
+    bool? ShowAvatar,
+    bool? ShowAbout,
+    bool? ShowPhoneNumber,
+    bool? ShowForwardedMessages,
+    bool? ShowAddToGroupPermission
+) : IRequest<Result<UserProfileDto>>;

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Domain/IAvatarStorageService.cs

@@ -0,0 +1,11 @@
+using Knot.Shared.Kernel.Storage;
+
+namespace Knot.Modules.Profiles.Contracts.Domain;
+
+public interface IAvatarStorageService
+{
+    Task<string> UploadAsync(Stream stream, string fileName, string contentType, CancellationToken cancellationToken = default);
+    Task DeleteAsync(string fileKey, CancellationToken cancellationToken = default);
+    Task<Stream?> GetAsync(string fileKey, CancellationToken cancellationToken = default);
+    string GetFileUrl(string fileKey);
+}

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Domain/IProfileRepository.cs

@@ -0,0 +1,15 @@
+using Knot.Modules.Profiles.Contracts.Application.DTOs;
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Profiles.Contracts.Domain;
+
+public interface IProfileRepository
+{
+    Task<UserProfileDto?> GetAsync(Guid userId, CancellationToken cancellationToken = default);
+    Task<UserProfileDto?> GetByUsernameAsync(string username, CancellationToken cancellationToken = default);
+    Task<List<UserProfileDto>> GetAsync(IEnumerable<Guid> userIds, CancellationToken cancellationToken = default);
+    Task<List<UserProfileDto>> SearchAsync(string query, int limit = 20, CancellationToken cancellationToken = default);
+    Task<Result<UserProfileDto>> CreateAsync(UserProfileDto dto, CancellationToken cancellationToken = default);
+    Task<Result<UserProfileDto>> UpdateAsync(UserProfileDto dto, CancellationToken cancellationToken = default);
+    Task<Result> DeleteAsync(Guid userId, CancellationToken cancellationToken = default);
+}

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Domain/IProfilesUnitOfWork.cs

@@ -0,0 +1,8 @@
+using Knot.Shared.Kernel;
+
+namespace Knot.Modules.Profiles.Contracts.Domain;
+
+public interface IProfilesUnitOfWork : IUnitOfWork
+{
+    IProfileRepository ProfileRepository { get; }
+}

backend/src/Contracts/Knot.Modules.Profiles.Contracts/Knot.Modules.Profiles.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Relations.Contracts/Knot.Modules.Relations.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Settings.Contracts/Application/Abstractions/ISettingsService.cs

@@ -0,0 +1,50 @@
+using Knot.Modules.Settings.Contracts.Application.DTOs;
+
+namespace Knot.Modules.Settings.Contracts.Application.Abstractions;
+
+public interface ISettingsService
+{
+    Task<SystemSettingsDto> GetSettingsAsync(CancellationToken cancellationToken = default);
+    Task UpdateSettingsAsync(SystemSettingsDto settings, CancellationToken cancellationToken = default);
+    SystemSettingsDto Current { get; }
+}
+
+public interface ISystemSettings
+{
+    SystemConfig Current { get; }
+}
+
+public interface IStoriesSettings
+{
+    StoriesConfig Current { get; }
+}
+
+public interface IChatsSettings
+{
+    ChatsConfig Current { get; }
+}
+
+public interface IMessagesSettings
+{
+    MessagesConfig Current { get; }
+}
+
+public interface IWebRtcSettings
+{
+    WebRtcConfig Current { get; }
+}
+
+public interface IKlipySettings
+{
+    KlipyConfig Current { get; }
+}
+
+public interface IImportSettings
+{
+    ImportConfig Current { get; }
+}
+
+public interface IFederationSettings
+{
+    FederationConfig Current { get; }
+}

backend/src/Contracts/Knot.Modules.Settings.Contracts/Application/DTOs/SystemSettingsDto.cs

@@ -0,0 +1,112 @@
+using System.Collections.Generic;
+
+namespace Knot.Modules.Settings.Contracts.Application.DTOs;
+
+public class SystemConfig
+{
+    public string ServerTimezone { get; set; } = "UTC";
+    public string DomainUrl { get; set; } = "https://example.com";
+    public string AdminRoute { get; set; } = "admin";
+    public bool EnableRegistration { get; set; } = true;
+}
+
+public class StoriesConfig
+{
+    public bool Enabled { get; set; } = true;
+    public int MaxStoriesPerPeriod { get; set; } = 5;
+    public int StoryLifetimeHours { get; set; } = 24;
+    public bool TextStoriesEnabled { get; set; } = true;
+    public int TextStoryDurationSeconds { get; set; } = 15;
+    public int MediaStoryMaxDurationSeconds { get; set; } = 30;
+    public int MaxMediaSizeBytes { get; set; } = 15 * 1024 * 1024;
+}
+
+public class ChatsConfig
+{
+    public bool SupportGroups { get; set; } = true;
+    public int MaxGroupParticipants { get; set; } = 200000;
+    public bool EnableAutoClean { get; set; } = false;
+    public bool AllowChatToGroupConversion { get; set; } = true;
+    public bool EnableFolders { get; set; } = true;
+}
+
+public class MessagesConfig
+{
+    public int DailyMessageLimitPerUser { get; set; } = 0;
+    public int ChatMessageLimit { get; set; } = 0;
+    public bool AllowMedia { get; set; } = true;
+    public int MaxMediaSizeBytes { get; set; } = 50 * 1024 * 1024;
+    public int MaxFileSize { get; set; } = 100 * 1024 * 1024;
+    public List<string> AllowedMediaTypes { get; set; } = new() { "image/jpeg", "image/png", "video/mp4", "image/gif" };
+    public bool AllowVoiceMessages { get; set; } = true;
+    public bool AllowForwarding { get; set; } = true;
+    public bool AllowReactions { get; set; } = true;
+    public bool AllowReplies { get; set; } = true;
+    public bool AllowQuoting { get; set; } = true;
+    public bool AllowMessageDeletion { get; set; } = true;
+    public bool ForbidCopying { get; set; } = false;
+    public bool AllowLinks { get; set; } = true;
+    public bool AllowPolls { get; set; } = true;
+    public bool AllowPinning { get; set; } = true;
+}
+
+public class WebRtcConfig
+{
+    public bool Enabled { get; set; } = false;
+    public bool EnableVideoCalls { get; set; } = true;
+    public bool EnableScreenSharing { get; set; } = true;
+    public string TurnHost { get; set; } = string.Empty;
+    public int TurnPort { get; set; } = 3478;
+    public string TurnUser { get; set; } = string.Empty;
+    public string TurnSecret { get; set; } = string.Empty;
+}
+
+public class KlipyConfig
+{
+    public bool Enabled { get; set; } = false;
+    public string ApiKey { get; set; } = string.Empty;
+    public string AppName { get; set; } = string.Empty;
+}
+
+public class ImportConfig
+{
+    public bool EnableTelegramImport { get; set; } = false;
+}
+
+public class FederationDomainConfig
+{
+    public string Domain { get; set; } = string.Empty;
+    public bool IsEnabled { get; set; } = true;
+    public string? PublicKey { get; set; }
+    public RemoteCapabilities? Capabilities { get; set; }
+}
+
+public class RemoteCapabilities
+{
+    public bool AllowMedia { get; set; }
+    public bool AllowPolls { get; set; }
+    public bool AllowVoiceMessages { get; set; }
+    public bool AllowVideoCalls { get; set; }
+    public bool AllowScreenSharing { get; set; }
+}
+
+public class FederationConfig
+{
+    public bool Enabled { get; set; } = false;
+    public string ServerDescription { get; set; } = string.Empty;
+    public string? PrivateKey { get; set; }
+    public string? PublicKey { get; set; }
+    public List<FederationDomainConfig> AllowedDomains { get; set; } = new();
+}
+
+public class SystemSettingsDto
+{
+    public SystemConfig System { get; set; } = new();
+    public StoriesConfig Stories { get; set; } = new();
+    public ChatsConfig Chats { get; set; } = new();
+    public MessagesConfig Messages { get; set; } = new();
+    public WebRtcConfig WebRtc { get; set; } = new();
+    public KlipyConfig Klipy { get; set; } = new();
+    public ImportConfig Import { get; set; } = new();
+    public FederationConfig Federation { get; set; } = new();
+}

backend/src/Contracts/Knot.Modules.Settings.Contracts/Knot.Modules.Settings.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Storage.Contracts/Knot.Modules.Storage.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.Stories.Contracts/Knot.Modules.Stories.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.TelegramImport.Contracts/Knot.Modules.TelegramImport.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>

backend/src/Contracts/Knot.Modules.WebRtc.Contracts/Knot.Modules.WebRtc.Contracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Shared\Knot.Shared.Kernel\Knot.Shared.Kernel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MediatR" Version="12.0.1" />
+  </ItemGroup>
+
+</Project>