PIbd-23_Vrazhkin_S_A_FurnitureAssembly/FurnitureAssembly/FurnitureAssemblyFileImplement/Implements/MessageInfoStorage.cs

using FurnitureAssemblyContracts.BindingModels;
using FurnitureAssemblyContracts.SearchModels;
using FurnitureAssemblyContracts.StoragesContracts;
using FurnitureAssemblyContracts.ViewModels;
using FurnitureAssemblyFileImplement.Models;

namespace FurnitureAssemblyFileImplement.Implements
{
    public class MessageInfoStorage : IMessageInfoStorage
    {
        private readonly DataFileSingleton _source;
        public MessageInfoStorage()
        {
            _source = DataFileSingleton.GetInstance();
        }
        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
        {
            if (model.MessageId == null)
            {
                return null;
            }
            return _source.Messages.FirstOrDefault(x => x.MessageId.Equals(model.MessageId))?.GetViewModel;
        }

        public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
        {
            if (!model.ClientId.HasValue)
            {
                return new();
            }
            return _source.Messages.Where(x => x.ClientId.Equals(model.ClientId)).Select(x => x.GetViewModel).ToList();
        }

        public List<MessageInfoViewModel> GetFullList()
        {
            return _source.Messages
            .Select(x => x.GetViewModel)
           .ToList();
        }

        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
        {

            var newClient = MessageInfo.Create(model);
            if (newClient == null)
            {
                return null;
            }
            _source.Messages.Add(newClient);
            _source.SaveMessages();
            return newClient.GetViewModel;
        }
    }
}