using HotelContracts.BindingModels;
using HotelContracts.SearchModels;
using HotelContracts.StoragesContracts;
using HotelContracts.ViewModels;
using HotelDatabaseImplement.Models;

namespace HotelDatabaseImplement.Implements;

public class RoomStorage : IRoomStorage
{
    public List<RoomViewModel> GetFullList()
    {
        using var context = new HotelDataBase();
        return context.Rooms
            .Select(x => x.GetView)
            .ToList();
    }

    public List<RoomViewModel> GetFilteredList(RoomSearchModel model)
    {
        if (string.IsNullOrEmpty(model.Type))
        {
            return new List<RoomViewModel>();
        }
        
        using var context = new HotelDataBase();
        if (model.Cost.HasValue)
        {
            return context.Rooms
                .Where(x => x.Cost <= model.Cost)
                .Select(x => x.GetView)
                .ToList();
        }

        return context.Rooms
            .Where(x => x.Type == model.Type)
            .Select(x => x.GetView)
            .ToList();
    }

    public RoomViewModel? GetElement(RoomSearchModel model)
    {
        if (!model.Id.HasValue) return null;
        using var context = new HotelDataBase();
        return context.Rooms.FirstOrDefault(x => x.Id == model.Id)?.GetView;
    }

    public RoomViewModel? Insert(RoomBindingModel model)
    {
        var item = Room.Create(model);
        if (item == null) return null;
        
        using var context = new HotelDataBase();
        context.Rooms.Add(item);
        context.SaveChanges();

        return item.GetView;
    }

    public RoomViewModel? Update(RoomBindingModel model)
    {
        using var context = new HotelDataBase();
        var item = context.Rooms.FirstOrDefault(x => x.Id == model.Id);
        if (item == null) return null;
        
        item.Update(model);
        context.SaveChanges();
        return item.GetView;
    }

    public RoomViewModel? Delete(RoomBindingModel model)
    {
        using var context = new HotelDataBase();
        var item = context.Rooms.FirstOrDefault(x => x.Id == model.Id);
        if (item == null) return null;
        context.Rooms.Remove(item);
        context.SaveChanges();
        return item.GetView;
    }
}