backend/Gridient.Core/Features/FieldGroups/Commands/UpdateFieldGroupCommandHandler.cs - master - softailor/gridient

backend/Gridient.Core/Features/FieldGroups/Commands/UpdateFieldGroupCommandHandler.cs

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18 фев 2026, 10:19

18 фев 2026, 10:191e6c4f8

using Gridient.Core.Exceptions;
using Gridient.Core.Models;
using Gridient.Core.Repositories;
using MediatR;

namespace Gridient.Core.Features.FieldGroups.Commands
{
    /// <summary>
    /// Обработчик команды для обновления группы полей
    /// </summary>
    public class UpdateFieldGroupCommandHandler : IRequestHandler<UpdateFieldGroupCommand, int>
    {
        private readonly ListsRepositoryFactory _factory;

        public UpdateFieldGroupCommandHandler(ListsRepositoryFactory factory)
        {
            _factory = factory;
        }

        public async Task<int> Handle(UpdateFieldGroupCommand request, CancellationToken cancellationToken)
        {
            var group = request.Group;
            group.ListId = request.ListId;
            group.Id = request.GroupId;

            if (group.Id > 0)
            {
                await ValidateFieldGroupBelongsToList(request.ListId, group.Id, cancellationToken);
            }

            return await _factory.FieldGroupsRepository.UpdateGroup(group, request.ListId, cancellationToken);
        }

        private async Task ValidateFieldGroupBelongsToList(int listId, int groupId, CancellationToken cancellationToken)
        {
            var actualListId = await GetFieldGroupListIdById(groupId, cancellationToken);
            if (actualListId != listId)
            {
                throw ListsException.Error($"Группа полей с ID {groupId} не принадлежит списку с ID {listId}");
            }
        }

        private async Task<int> GetFieldGroupListIdById(int id, CancellationToken cancellationToken)
        {
            var entities = await _factory.FieldGroupsRepository
                .GetEntitiesByQueryAsync(e => e.Id == id, cancellationToken);
            var group = entities.FirstOrDefault();
            if (group == null)
                throw ListsException.EntityNotFound(id);
            return group.ListId;
        }
    }
}