IM/backend/IM_API/Application/EventHandlers/MessageCreatedHandler/ConversationEventHandler.cs

using AutoMapper;
using IM_API.Application.Interfaces;
using IM_API.Domain.Events;
using IM_API.Dtos;
using IM_API.Exceptions;
using IM_API.Interface.Services;
using IM_API.Models;
using IM_API.Services;
using IM_API.Tools;
using MassTransit;
using Microsoft.EntityFrameworkCore;
using Newtonsoft.Json;

namespace IM_API.Application.EventHandlers.MessageCreatedHandler
{
    public class ConversationEventHandler : IConsumer<MessageCreatedEvent>
    {
        private readonly IConversationService _conversationService;
        private readonly ILogger<ConversationEventHandler> _logger;
        private readonly ImContext _context;
        private readonly IMapper _mapper;
        public ConversationEventHandler(
            IConversationService conversationService,
            ILogger<ConversationEventHandler> logger,
            ImContext imContext,
            IMapper mapper
            )
        {
            _conversationService = conversationService;
            _logger = logger;
            _context = imContext;
            _mapper = mapper;
        }

        public async Task Consume(ConsumeContext<MessageCreatedEvent> context)
        {
            var @event = context.Message;
            await _conversationService.UpdateConversationAfterSentAsync(new Dtos.Conversation.UpdateConversationDto
            {
                LastMessage = @event.MessageContent,
                LastSequenceId = @event.SequenceId,
                ReceiptId = @event.MsgRecipientId,
                SenderId = @event.MsgSenderId,
                StreamKey = @event.StreamKey,
                DateTime = @event.MessageCreated
            });
        }

    }
}