Add AutoMapper and message response models

Introduced AutoMapper to the API project and registered it in the DI container. Added mapping profiles for core models to DTOs and response objects. Refactored controllers to use AutoMapper for mapping entities to response DTOs. Implemented new response models for messages, media attachments, reactions, and views. Updated MessagesLoader to load messages with related data. Added a migration to support ChatGroupId in messages. Updated dependencies and fixed minor issues in related files.

Govor.API/Controllers/ChatLoadController.cs

@@ -1,4 +1,7 @@
+using AutoMapper;
 using Govor.Application.Interfaces;
+using Govor.Application.Interfaces.Infrastructure.Extensions;
+using Govor.Contracts.Responses;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 
@@ -9,8 +12,85 @@ namespace Govor.API.Controllers;
 [Route("api/chats")]
 public class ChatLoadController : Controller
 {
-    public ChatLoadController(ILogger<ChatLoadController> logger, IMessagesLoader messagesLoader)
+    private readonly ICurrentUserService _currentUser;
+    private readonly ILogger<ChatLoadController> _logger;
+    private readonly IMessagesLoader _messagesLoader;
+    private readonly IMapper _mapper;
+    public ChatLoadController(
+        ILogger<ChatLoadController> logger,
+        IMessagesLoader messagesLoader,
+        ICurrentUserService currentUser,
+        IMapper mapper)
     {
-        
+        _logger = logger;
+        _messagesLoader = messagesLoader;
+        _currentUser = currentUser;
+        _mapper = mapper;
     }
+    
+    [HttpGet("group-messages")]
+    public async Task<IActionResult> GetChatMessages( 
+        [FromQuery] Guid chatId,
+        [FromQuery] Guid? startMessageId,
+        [FromQuery] int pageSize = 20)
+    {
+        try
+        {
+            var result = await _messagesLoader.LoadLastMessagesInChatGroup(
+                chatId,
+                _currentUser.GetCurrentUserId(),
+                startMessageId,
+                pageSize);
+
+            var response = _mapper.Map<List<MessageResponse>>(result);
+
+            return Ok(response);
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            _logger.LogWarning(ex.Message);
+            return Unauthorized(ex.Message);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, ex.Message);
+            return StatusCode(500, "Unexpected Error! Please try again later.");
+        }
+    }
+    
+    [HttpGet("user-messages")]
+    public async Task<IActionResult> GetUserMessages(
+        [FromQuery] Guid userId,
+        [FromQuery] Guid? startMessageId,
+        [FromQuery] int pageSize = 20)
+    {
+        try
+        {
+            var result = await _messagesLoader.LoadLastMessagesInUserChat(
+                userId,
+                _currentUser.GetCurrentUserId(),
+                startMessageId,
+                pageSize);
+
+            var response = _mapper.Map<List<MessageResponse>>(result);
+
+            return Ok(response);
+        }
+        catch (InvalidOperationException ex)
+        {
+            _logger.LogWarning(ex, ex.Message);
+            return BadRequest(ex.Message);
+        }
+        catch (UnauthorizedAccessException ex)
+        {
+            _logger.LogWarning(ex.Message);
+            return Unauthorized(ex.Message);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, ex.Message);
+            return StatusCode(500, "Unexpected Error! Please try again later.");
+        }
+    }
+
 }