using AbstractShopContracts.StoragesContracts;
using AutomobilePlantContracts.BindingModels;
using AutomobilePlantContracts.SearchModel;
using AutomobilePlantContracts.ViewModel;
using AutomobilePlantDataModels.Models;
using AutomomilePlantFileImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AutomomilePlantFileImplement.Implements
{
    public class MessageStorage : IMessageInfoStorage
    {
        private readonly DataFileSingleton source;
        public MessageStorage()
        {
            source = DataFileSingleton.GetInstance();
        }

        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
        {
            if (string.IsNullOrEmpty(model.MessageId) )
            {
                return null;
            }
            return source.Messages
            .FirstOrDefault(x =>
           (!string.IsNullOrEmpty(model.MessageId) && 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== model.ClientId)
           .Select(x => x.GetViewModel)
           .ToList();
        }

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

        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
        {
            if (source.Messages.Count > 0)
            {
                var id = source.Messages.Count + 1;
                model.MessageId = id.ToString();
            }
            else
                model.MessageId = "1";

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