finalizare 1.0

backend/Application/Endpoints/Chats/GetChats/GetConversationsHandler.cs

@@ -0,0 +1,59 @@
+using Application.Services.Database.MongoDB;
+using Application.Services.Database.PostgreSQL;
+using Domain.Entities;
+
+namespace Application.Endpoints.Chats.GetChats;
+
+public class GetConversationsHandler(
+    IChatMongoDbService chatMongoDbService,
+    IPatientRepository patientRepository,
+    IDoctorRepository doctorRepository)
+{
+    public async Task<BaseResponse> HandleGetConversation(GetConversationsCommand getConversationCommand,
+        CancellationToken token)
+    {
+        var validation = new GetConversationsValidator(doctorRepository, patientRepository);
+        var validationResult = await validation.ValidateAsync(getConversationCommand, token);
+
+        if (!validationResult.IsValid)
+        {
+            var firstError = validationResult.Errors.FirstOrDefault();
+            var errorCode = int.TryParse(firstError.ErrorCode, out var code) ? code : -1;
+            var errorMessage = firstError.ErrorMessage;
+
+            return new BaseResponse
+            {
+                StatusCode = errorCode,
+                Message = errorMessage,
+                Data = null
+            };
+        }
+
+        var chatId = IdentifierGenerator.GenerateId(getConversationCommand.IdUser1, getConversationCommand.IdUser2);
+
+        var criteria = new List<(string, string)>();
+        criteria.Add(("_id", chatId));
+
+        Chat? chat = null;
+
+        var documents = await chatMongoDbService.FindAsync<Chat>(criteria, token);
+        if (!documents.Any())
+        {
+            chat = new Chat();
+            chat.SetId(chatId);
+
+            await chatMongoDbService.AddAsync(chat, token);
+        }
+        else
+        {
+            chat = documents[0];
+        }
+
+        return new BaseResponse
+        {
+            StatusCode = HttpStatusCodes.OK,
+            Message = "Fetching messages.",
+            Data = chat
+        };
+    }
+}