using Contracts.BindingModels;
using Contracts.SearchModel;
using Contracts.Storage;
using Contracts.ViewModels;
using MongoDB.Bson;
using MongoDB.Driver;
using System;
using System.Collections.Generic;
using System.Diagnostics.Metrics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MongoDB
{
    public class StatusStorage : IStatusStorage
    {
        public MongoClient contex;
        public StatusStorage()
        {
            contex = MongoDateBase.getInstance().client;
        }
        
        public StatusVM? Delete(StatusBM model)
        {
            IMongoDatabase db = contex.GetDatabase("logistic");
            var collection = db.GetCollection<BsonDocument>("Status");
            var res =  collection.FindOneAndDelete(new BsonDocument("name", model.Title));
            if (res == null)
                return null;
            return new StatusVM
            {
                Title = res["name"].ToString()
            };
        }

        public StatusVM? GetElement(StatusSM model)
        {
            IMongoDatabase db = contex.GetDatabase("logistic");
            var collection = db.GetCollection<BsonDocument>("Status");
            BsonDocument status = collection.Find(new BsonDocument("name",model.Title)).FirstOrDefault();
            if (status == null)
                return null;
            return new StatusVM
            {
                Title = status["name"].ToString()
            };
        }

        public List<StatusVM> GetFullList()
        {
            IMongoDatabase db = contex.GetDatabase("logistic");
            var collection = db.GetCollection<BsonDocument>("Status");
            List<BsonDocument> statuses =  collection.Find(new BsonDocument()).ToList();
            List < StatusVM > res = new List<StatusVM>();
            foreach (var status in statuses)
            {
                res.Add(new StatusVM
                {
                    Title = status["name"].ToString()
                }) ;
            }
            return res;
        }

        public StatusVM? Insert(StatusBM model)
        {
            IMongoDatabase db = contex.GetDatabase("logistic");
            var collection = db.GetCollection<BsonDocument>("Status");
            BsonDocument status = new BsonDocument { { "name", model.Title } };
           collection.InsertOne(status);
            return new StatusVM { Title = model.Title };
        }

        public StatusVM? Update(StatusBM model)
        {
            IMongoDatabase db = contex.GetDatabase("logistic");
            var collection = db.GetCollection<BsonDocument>("Status");
            var result = collection.UpdateOneAsync(new BsonDocument("name", model.oldTitle), new BsonDocument("$set", new BsonDocument("name", model.Title)));
            if(result == null)
                return null;
            return new StatusVM
            {
                Title = model.Title
            };
        }
    }
}