using BeautySaloonContracts.BindingModels;
using BeautySaloonContracts.SearchModels;
using BeautySaloonContracts.StoragesContracts;
using BeautySaloonContracts.ViewModels;
using MongoDB.Bson;
using MongoDB.Driver;

namespace BeautySaloonNoSQLDatabaseImplement.Implements
{
    public class ClientStorage : IClientStorage
    {
        private readonly NewdbContext _source;
        public ClientStorage()
        {
            _source = NewdbContext.GetInstance();
        }
        public ClientViewModel? Delete(ClientBindingModel model)
        {
            var element = _source.Clients
               .FindOneAndDelete(new BsonDocument("id", model.Id));
            if (element != null)
                return element.GetViewModel;
            return null;
        }

        public ClientViewModel? GetElement(ClientSearchModel model)
        {
            if (model.Id.HasValue)
                return _source.Clients
                    .Find(new BsonDocument("id", model.Id)).FirstOrDefault()?.GetViewModel;
            if (!string.IsNullOrEmpty(model.Phone))
                return _source.Clients
                    .Find(new BsonDocument("phone", model.Phone)).FirstOrDefault()?.GetViewModel;
            return null;
        }

        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
        {
            if (!string.IsNullOrEmpty(model.Surname))
            {
                var filter = Builders<Client>.Filter.Regex("surname", new BsonRegularExpression(model.Surname));
                return _source.Clients.Find(filter).ToList().Select(x => x.GetViewModel).ToList();
            }
            return new();
        }

        public List<ClientViewModel> GetFullList()
        {
            var filterDefinition = Builders<Client>.Filter.Empty;
            return _source.Clients.Find(filterDefinition).ToList().Select(x => x.GetViewModel).ToList();
        }

        public ClientViewModel? Insert(ClientBindingModel model)
        {
            model.Id = _source.Clients.AsQueryable()
                .Count() > 0 ? _source.Clients.AsQueryable().Max(x => x.Id) + 1 : 1;
            var newElement = Client.Create(model);
            if (newElement == null)
            {
                return null;
            }
            _source.Clients.InsertOne(newElement);
            return newElement.GetViewModel;
        }

        public ClientViewModel? Update(ClientBindingModel model)
        {
            var element = _source.Clients.Find(new BsonDocument("id", model.Id)).FirstOrDefault();
            if (element == null)
            {
                return null;
            }
            element.Update(model);
            _source.Clients.FindOneAndReplace(new BsonDocument("id", model.Id), element);
            return element.GetViewModel;
        }
    }
}