Add private chat support and group model enhancements

Introduces repositories, validators, and integration tests for private chats. Refactors group-related models to support invitations and memberships, updates group repository interfaces and implementations, and enhances message service logic to handle private chat creation and retrieval. Also registers new services and validators in DI, and updates related tests.

Govor.Core/Repositories/Groups/IGroupMessagesReader.cs

@@ -0,0 +1,8 @@
+using Govor.Core.Models;
+
+namespace Govor.Core.Repositories.Groups;
+
+public interface IGroupMessagesReader
+{
+    public Task<IEnumerable<Message>> GetMessages(Guid chatId, Guid? startMessageId, int pageSize = 20);
+}

Govor.Core/Repositories/Groups/IGroupsReader.cs

@@ -1,13 +1,13 @@
-using System.Text.RegularExpressions;
+using Govor.Core.Models;
 
 namespace Govor.Core.Repositories.Groups;
 
 public interface IGroupsReader
 {
-    public Task<List<Group>> GetAllAsync();
-    public Task<Group> GetByIdAsync(Guid id);
-    public Task<List<Group>> FindByNameAsync(string name);
-    public Task<List<Group>> GetByAdminIdAsync(Guid adminId);
-    public Task<List<Group>> GetByUserIdAsync(Guid adminId);
-    public bool IsUserMemberOfGroupAsync(Guid userId, Guid groupId);
+    public Task<List<ChatGroup>> GetAllAsync();
+    public Task<ChatGroup> GetByIdAsync(Guid id);
+    public Task<List<ChatGroup>> SearchByNameAsync(string name);
+    public Task<List<ChatGroup>> GetByAdminIdAsync(Guid userId);
+    public Task<List<ChatGroup>> GetByUserIdAsync(Guid userId);
+    public Task<bool> IsUserMemberOfGroupAsync(Guid userId, Guid groupId);
 }

Govor.Core/Repositories/Groups/IGroupsWriter.cs

@@ -1,10 +1,10 @@
-using System.Text.RegularExpressions;
+using Govor.Core.Models;
 
 namespace Govor.Core.Repositories.Groups;
 
 public interface IGroupsWriter
 {
-   Task Add(Group group);
-   Task Update(Group group);
-   Task Remove(Guid groupId);
+   Task AddAsync(ChatGroup group);
+   Task UpdateAsync(ChatGroup group);
+   Task RemoveAsync(Guid groupId);
 }

Govor.Core/Repositories/PrivateChats/IPrivateChatsExist.cs

@@ -0,0 +1,7 @@
+namespace Govor.Core.Repositories.PrivateChats;
+
+public interface IPrivateChatsExist
+{
+    bool Exist(Guid chatId);
+    bool Exist(Guid userAId, Guid userBId);
+}

Govor.Core/Repositories/PrivateChats/IPrivateChatsReader.cs

@@ -0,0 +1,10 @@
+using Govor.Core.Models;
+
+namespace Govor.Core.Repositories.PrivateChats;
+
+public interface IPrivateChatsReader
+{
+    Task<List<PrivateChat>> GetAllAsync();
+    Task<PrivateChat> GetByIdAsync(Guid id);
+    Task<PrivateChat> GetByMembersAsync(Guid memberAId, Guid memberBId);
+}

Govor.Core/Repositories/PrivateChats/IPrivateChatsRepository.cs

@@ -0,0 +1,6 @@
+namespace Govor.Core.Repositories.PrivateChats;
+
+public interface IPrivateChatsRepository : IPrivateChatsReader, IPrivateChatsWriter, IPrivateChatsExist
+{
+    
+}

Govor.Core/Repositories/PrivateChats/IPrivateChatsWriter.cs

@@ -0,0 +1,10 @@
+using Govor.Core.Models;
+
+namespace Govor.Core.Repositories.PrivateChats;
+
+public interface IPrivateChatsWriter
+{
+    Task AddAsync(PrivateChat chat);
+    Task UpdateAsync(PrivateChat chat);
+    Task RemoveAsync(Guid chatId);
+}