using SecuritySystemContracts.BindingModels;
using SecuritySystemContracts.SearchModels;
using SecuritySystemContracts.StoragesContracts;
using SecuritySystemContracts.ViewModels;
using SecuritySystemFileImplement.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SecuritySystemFileImplement.Implements
{
    //реализация интерфейса хранилища заготовок
    public class SensorStorage : ISensorStorage
    {
        private readonly DataFileSingleton source;

        public SensorStorage()
        {
            source = DataFileSingleton.GetInstance();
        }

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

        public List<SensorViewModel> GetFilteredList(SensorSearchModel model)
        {
            if (string.IsNullOrEmpty(model.SensorName))
            {
                return new();
            }

            return source.Sensors.Where(x => x.SensorName.Contains(model.SensorName)).Select(x => x.GetViewModel).ToList();
        }

        public SensorViewModel? GetElement(SensorSearchModel model)
        {
            if (string.IsNullOrEmpty(model.SensorName) && !model.Id.HasValue)
            {
                return null;
            }

            return source.Sensors.FirstOrDefault(x => (!string.IsNullOrEmpty(model.SensorName) && x.SensorName == model.SensorName)
                || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
        }

        public SensorViewModel? Insert(SensorBindingModel model)
        {
            model.Id = source.Sensors.Count > 0 ? source.Sensors.Max(x => x.Id) + 1 : 1;

            var newSensor = Sensor.Create(model);

            if (newSensor == null)
            {
                return null;
            }

            source.Sensors.Add(newSensor);
            source.SaveSensors();

            return newSensor.GetViewModel;
        }

        public SensorViewModel? Update(SensorBindingModel model)
        {
            var sensor = source.Sensors.FirstOrDefault(x => x.Id == model.Id);

            if (sensor == null)
            {
                return null;
            }

            sensor.Update(model);
            source.SaveSensors();

            return sensor.GetViewModel;
        }

        public SensorViewModel? Delete(SensorBindingModel model)
        {
            var element = source.Sensors.FirstOrDefault(x => x.Id == model.Id);

            if (element != null)
            {
                source.Sensors.Remove(element);
                source.SaveSensors();

                return element.GetViewModel;
            }

            return null;
        }
    }
}