using Amazon.Auth.AccessControlPolicy;
using BeautySaloonContracts.BindingModels;
using BeautySaloonContracts.SearchModels;
using BeautySaloonContracts.StoragesContracts;
using BeautySaloonContracts.ViewModels;
using MongoDB.Bson;
using MongoDB.Driver;

namespace BeautySaloonNoSQLDatabaseImplement.Implements
{
    public class PositionStorage : IPositionStorage
    {
        private readonly NewdbContext _source;
        public PositionStorage()
        {
            _source = NewdbContext.GetInstance();
        }
        public PositionViewModel? Delete(PositionBindingModel model)
        {
            var element = _source.Positions
                .FindOneAndDelete(new BsonDocument("id", model.Id));
            if (element != null)
                return element.GetViewModel;
            return null;
        }

        public PositionViewModel? GetElement(PositionSearchModel model)
        {
            if (model.Id.HasValue)
                return _source.Positions
                    .Find(new BsonDocument("id", model.Id)).FirstOrDefault()?.GetViewModel;
            if (!string.IsNullOrEmpty(model.Name))
                return _source.Positions
                    .Find(new BsonDocument("name", model.Name)).FirstOrDefault()?.GetViewModel;
            return null;
        }

        public List<PositionViewModel> GetFilteredList(PositionSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name))
            {
                return new();
            }
            var filter = Builders<Position>.Filter.Regex("name", new BsonRegularExpression(model.Name));
            return _source.Positions.Find(filter).ToList().Select(x => x.GetViewModel).ToList();
        }

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

        public PositionViewModel? Insert(PositionBindingModel model)
        {
            model.Id = _source.Positions.AsQueryable()
                .Count() > 0 ? _source.Positions.AsQueryable().Max(x => x.Id) + 1 : 1;
            var newPosition = Position.Create(model);
            if (newPosition == null)
            {
                return null;
            }
            _source.Positions.InsertOne(newPosition);
            return newPosition.GetViewModel;
        }

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