backend/Gridient.Core/Features/Views/Queries/GetViewsQueryHandler.cs - master - softailor/gridient

backend/Gridient.Core/Features/Views/Queries/GetViewsQueryHandler.cs
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18 фев 2026, 10:19
18 фев 2026, 10:191e6c4f8
using Gridient.Core.Constants;
using Gridient.Core.Models;
using Gridient.Core.Repositories;
using MediatR;
using Field = Gridient.Core.Models.Field;

namespace Gridient.Core.Features.Views.Queries
{
    /// <summary>
    /// Обработчик запроса для получения представлений списка
    /// Авторизация выполняется в AuthorizationBehavior
    /// </summary>
    public class GetViewsQueryHandler : IRequestHandler<GetViewsQuery, View[]>
    {
        private readonly ListsRepositoryFactory _factory;

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

        public async Task<View[]> Handle(GetViewsQuery request, CancellationToken cancellationToken)
        {
            // Авторизация уже проверена в AuthorizationBehavior через IRequiresListAuthorization

            // Получаем поля с ViewOrder > 0 для представления по умолчанию
            var defaultViewFieldEntities = await _factory.FieldsRepository
                .GetFields(request.ListId, cancellationToken, f => f.ViewOrder > 0);
            
            var defaultView = new View
            {
                Id = 0,
                ListId = request.ListId,
                Fields = defaultViewFieldEntities.Select(ToViewField).ToArray(),
                Title = DefaultNames.DefaultViewTitle
            };

            // Получаем пользовательские представления
            var customViews = await _factory.ViewsRepository
                .GetEntitiesByQueryAsync(e => e.ListId == request.ListId, cancellationToken);

            // Загружаем все поля списка для использования в представлениях
            var allFields = await _factory.FieldsRepository
                .GetFields(request.ListId, cancellationToken);
            var fieldsLookup = allFields.ToDictionary(f => f.Id);

            foreach (var view in customViews)
            {
                if (view.ViewFields == null || view.ViewFields.Length == 0)
                {
                    view.Fields = Array.Empty<ViewField>();
                    continue;
                }

                view.Fields = view.ViewFields
                    .Where(vf => fieldsLookup.ContainsKey(vf.FieldId))
                    .Select(vf =>
                    {
                        var field = fieldsLookup[vf.FieldId];
                        var viewField = ToViewField(field);
                        viewField.ViewOrder = vf.FieldOrder;
                        return viewField;
                    })
                    .OrderBy(f => f.ViewOrder)
                    .ToArray();
            }

            return [defaultView, .. customViews];
        }

        private static ViewField ToViewField(Field field) => new ViewField
        {
            Id = field.Id,
            Name = field.Name,
            Title = field.Title,
            FieldType = field.FieldType,
            IsDecimal = field.IsDecimal,
            IsTimeAdded = field.IsTimeAdded,
            Options = field.Options,
            ViewOrder = field.ViewOrder
        };
    }
}