using MongoDB.Driver;
using SportCompetitionsContracts.BindingModels;
using SportCompetitionsContracts.SearchModels;
using SportCompetitionsContracts.StoragesContracts;
using SportCompetitionsContracts.ViewModels;
using SportCompetitionsMongo.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SportCompetitionsMongo.Implements
{
    public class ResultStorage : IResultStorage
    {

        public void ClearEntity()
        {
            using var context = new SportCompetitionsMongoDB();
            context.GetCollection<Result>("Results")
                .DeleteMany(Builders<Result>.Filter.Empty);
        }

        public List<ResultViewModel> GetFullList()
        {
            using var context = new SportCompetitionsMongoDB();
            var results = context.GetCollection<Result>("Results").Find(Builders<Result>.Filter.Empty).ToList();

            return results.Select(x => x.GetViewModel).ToList();
        }
        public List<ResultViewModel> GetFilteredList(ResultSearchModel model)
        {
            using var context = new SportCompetitionsMongoDB();
            if (!model.Id.HasValue) return new List<ResultViewModel>();

            var filterBuilder = Builders<Result>.Filter;
            var filter = filterBuilder.Empty;
            filter = filterBuilder.Eq("Id", model.Id);

            var results = context.GetCollection<Result>("Results").Find(filter).ToList();

            return results.Select(x => x.GetViewModel).ToList();
        }

        public ResultViewModel? GetElement(ResultSearchModel model)
        {
            using var context = new SportCompetitionsMongoDB();
            var results = context.GetCollection<Result>("Results");
            if (!model.Id.HasValue) return null;
            return results.Find(x => x.Id == model.Id).FirstOrDefault()?.GetViewModel;
        }
        public ResultViewModel? Insert(ResultBindingModel model)
        {
            using var context = new SportCompetitionsMongoDB();


            var results = context.GetCollection<Result>("Results");

            model.Id = (int)results.CountDocuments(FilterDefinition<Result>.Empty);

            var newResult = Result.Create(model);

            if (newResult == null) return null;


            results.InsertOne(newResult);
            return newResult.GetViewModel;
        }
        public ResultViewModel? Update(ResultBindingModel model)
        {
            using var context = new SportCompetitionsMongoDB();
            var result = context.GetCollection<Result>("Results").Find(x => x.Id == model.Id).FirstOrDefault();
            if (result == null) return null;
            result.Update(model);
            context.GetCollection<Result>("Results").ReplaceOne(x => x.Id == model.Id, result);
            return result.GetViewModel;
        }
        public ResultViewModel? Delete(ResultBindingModel model)
        {
            using var context = new SportCompetitionsMongoDB();
            var element = context.GetCollection<Result>("Results").Find(x => x.Id == model.Id).FirstOrDefault();
            if (element != null)
            {
                context.GetCollection<Result>("Results").DeleteOne(x => x.Id == model.Id);
                return element.GetViewModel;
            }
            return null;
        }
    }
}