Merge branch 'dev' of http://gitlab.pmf.kg.ac.rs/igrannonica/neuronstellar into dev

# Conflicts:
#	backend/api/api/appsettings.json

21 files changed, 250 insertions, 33 deletions

diff --git a/backend/api/api/Controllers/DatasetController.cs b/backend/api/api/Controllers/DatasetController.cs
index 8a622138..6eb1b9e6 100644
--- a/backend/api/api/Controllers/DatasetController.cs
+++ b/backend/api/api/Controllers/DatasetController.cs
@@ -14,11 +14,15 @@ namespace api.Controllers
     public class DatasetController : ControllerBase
     {
         private readonly IDatasetService _datasetService;
+        private readonly IMlConnectionService _mlConnectionService;
+        private readonly IFileService _fileService;
         private IJwtToken jwtToken;
 
-        public DatasetController(IDatasetService datasetService, IConfiguration configuration,IJwtToken Token)
+        public DatasetController(IDatasetService datasetService, IConfiguration configuration,IJwtToken Token,IMlConnectionService mlConnectionService, IFileService fileService)
         {
             _datasetService = datasetService;
+            _mlConnectionService = mlConnectionService;
+            _fileService = fileService;
             jwtToken = Token;
         }
 
@@ -135,9 +139,8 @@ namespace api.Controllers
                 return BadRequest();
 
             var dataset = _datasetService.GetOneDataset(username, name);
-
             if (dataset == null)
-                return NotFound($"Dataset with name = {name} not found or dataset is not public");
+                return NotFound($"Dataset with name = {name} not found or dataset is not public or not preprocessed");
 
             return dataset;
         }
@@ -159,7 +162,7 @@ namespace api.Controllers
         // POST api/<DatasetController>/add
         [HttpPost("add")]
         [Authorize(Roles = "User,Guest")]
-        public ActionResult<Dataset> Post([FromBody] Dataset dataset)
+        public async Task<ActionResult<Dataset>> Post([FromBody] Dataset dataset)
         {
             //da li ce preko tokena da se ubaci username ili front salje
             //dataset.username = usernameToken;
@@ -170,9 +173,12 @@ namespace api.Controllers
                 return NotFound($"Dateset with name = {dataset.name} exisits");
             else
             {
-                _datasetService.Create(dataset);
 
-                return CreatedAtAction(nameof(Get), new { id = dataset._id }, dataset);
+                FileModel fileModel = _fileService.getFile(dataset.fileId);
+                dataset.isPreProcess = false;
+                _datasetService.Create(dataset);
+                _mlConnectionService.PreProcess(dataset,fileModel.path);
+                return Ok();
             }
         }
 
diff --git a/backend/api/api/Controllers/ExperimentController.cs b/backend/api/api/Controllers/ExperimentController.cs
new file mode 100644
index 00000000..2a2db31e
--- /dev/null
+++ b/backend/api/api/Controllers/ExperimentController.cs
@@ -0,0 +1,75 @@
+using System.Net.Http.Headers;
+using api.Models;
+using api.Services;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Net.Http.Headers;
+
+namespace api.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class ExperimentController : ControllerBase
+    {
+
+        private readonly IExperimentService _experimentService;
+        private IJwtToken jwtToken;
+
+        public ExperimentController(IExperimentService experimentService, IConfiguration configuration, IJwtToken Token)
+        {
+            _experimentService = experimentService;
+            jwtToken = Token;
+        }
+
+        [HttpPost("add")]
+        [Authorize(Roles = "User,Guest")]
+        public async Task<ActionResult<Experiment>> Post([FromBody] Experiment experiment)
+        {
+            string uploaderId;
+            var header = Request.Headers[HeaderNames.Authorization];
+            if (AuthenticationHeaderValue.TryParse(header, out var headerValue))
+            {
+                var scheme = headerValue.Scheme;
+                var parameter = headerValue.Parameter;
+                uploaderId = jwtToken.TokenToId(parameter);
+                if (uploaderId == null)
+                    return null;
+            }
+            else
+                return BadRequest();
+
+            experiment.uploaderId = uploaderId;
+
+            _experimentService.Create(experiment);
+            return Ok(experiment);
+        }
+
+        [HttpGet("get")]
+        [Authorize(Roles = "User,Guest")]
+        public async Task<ActionResult<Experiment>> Get(string id)
+        {
+            string uploaderId;
+            var header = Request.Headers[HeaderNames.Authorization];
+            if (AuthenticationHeaderValue.TryParse(header, out var headerValue))
+            {
+                var scheme = headerValue.Scheme;
+                var parameter = headerValue.Parameter;
+                uploaderId = jwtToken.TokenToId(parameter);
+                if (uploaderId == null)
+                    return null;
+            }
+            else
+                return BadRequest();
+
+            var experiment = _experimentService.Get(id);
+            if(experiment.uploaderId!=uploaderId)
+                return BadRequest("Not your experiment");
+
+            return Ok(experiment);
+        }
+
+
+
+    }
+}
diff --git a/backend/api/api/Controllers/ModelController.cs b/backend/api/api/Controllers/ModelController.cs
index 210d37c8..97e7c7a7 100644
--- a/backend/api/api/Controllers/ModelController.cs
+++ b/backend/api/api/Controllers/ModelController.cs
@@ -17,15 +17,17 @@ namespace api.Controllers
         private readonly IDatasetService _datasetService;
         private readonly IFileService _fileService;
         private readonly IModelService _modelService;
+        private readonly IExperimentService _experimentService;
         private IJwtToken jwtToken;
 
 
-        public ModelController(IMlConnectionService mlService, IModelService modelService, IDatasetService datasetService, IFileService fileService, IConfiguration configuration,IJwtToken token)
+        public ModelController(IMlConnectionService mlService, IModelService modelService, IDatasetService datasetService, IFileService fileService, IConfiguration configuration,IJwtToken token,IExperimentService experiment)
         {
             _mlService = mlService;
             _modelService = modelService;
             _datasetService = datasetService;
             _fileService = fileService;
+            _experimentService = experiment;
             jwtToken = token;
         }
 
@@ -45,7 +47,8 @@ namespace api.Controllers
             }
             else
                 return BadRequest();
-            var dataset = _datasetService.GetOneDataset(model.datasetId);
+            var experiment=_experimentService.Get(model.experimentId);
+            var dataset = _datasetService.GetOneDataset(experiment.datasetId);
             var filepath = _fileService.GetFilePath(dataset.fileId, uploaderId);
             var result = await _mlService.SendModelAsync(model, filepath);
             return Ok(result);
@@ -145,7 +148,8 @@ namespace api.Controllers
         {
             bool overwrite = false;
             //username="" ako je GUEST
-            model.inputNeurons = model.inputColumns.Length;
+            Experiment e = _experimentService.Get(model.experimentId);
+            model.inputNeurons = e.inputColumns.Length;
             if (_modelService.CheckHyperparameters(model.inputNeurons, model.hiddenLayerNeurons, model.hiddenLayers, model.outputNeurons) == false)
                 return BadRequest("Bad parameters!");
 
diff --git a/backend/api/api/Data/UserStoreDatabaseSettings.cs b/backend/api/api/Data/UserStoreDatabaseSettings.cs
index e83d2b54..822f9bf5 100644
--- a/backend/api/api/Data/UserStoreDatabaseSettings.cs
+++ b/backend/api/api/Data/UserStoreDatabaseSettings.cs
@@ -13,5 +13,6 @@ namespace api.Data
         public string PredictorCollectionName { get; set; } = String.Empty;
         public string ModelCollectionName { get; set; } = String.Empty;
         public string FilesCollectionName { get; set; } = String.Empty;
+        public string ExperimentCollectionName { get; set; } = String.Empty;
     }
 }
diff --git a/backend/api/api/Interfaces/IUserStoreDatabaseSettings.cs b/backend/api/api/Interfaces/IUserStoreDatabaseSettings.cs
index a5b5f5eb..05c41701 100644
--- a/backend/api/api/Interfaces/IUserStoreDatabaseSettings.cs
+++ b/backend/api/api/Interfaces/IUserStoreDatabaseSettings.cs
@@ -9,5 +9,6 @@
         string PredictorCollectionName { get; set; }
         string ModelCollectionName { get; set; }
         string FilesCollectionName { get; set; }
+        string ExperimentCollectionName { get; set; }
     }
 }
diff --git a/backend/api/api/Models/ColumnInfo.cs b/backend/api/api/Models/ColumnInfo.cs
new file mode 100644
index 00000000..ee4cee0d
--- /dev/null
+++ b/backend/api/api/Models/ColumnInfo.cs
@@ -0,0 +1,13 @@
+namespace api.Models
+{
+    public class ColumnInfo
+    {
+        public string columnName { get; set; }
+        public bool isNumber { get; set; }
+        public int numNulls { get; set; }
+        public float mean { get; set; }
+        public float median { get; set; }
+        public string[] uniqueValues { get; set; }
+
+    }
+}
diff --git a/backend/api/api/Models/Dataset.cs b/backend/api/api/Models/Dataset.cs
index dcfde3b1..2b3efa3c 100644
--- a/backend/api/api/Models/Dataset.cs
+++ b/backend/api/api/Models/Dataset.cs
@@ -22,6 +22,11 @@ namespace api.Models
         public DateTime lastUpdated { get; set; }
         public string delimiter { get; set; }
         public bool hasHeader { get; set; }
+
+        public ColumnInfo[] columnInfo { get; set; }
+        public int totalNulls;
+        public bool isPreProcess { get; set; }
+
     }
 }
 
diff --git a/backend/api/api/Models/Experiment.cs b/backend/api/api/Models/Experiment.cs
new file mode 100644
index 00000000..6de3f169
--- /dev/null
+++ b/backend/api/api/Models/Experiment.cs
@@ -0,0 +1,23 @@
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace api.Models
+{
+    public class Experiment
+    {
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        public string _id { get; set; }
+
+        public string datasetId { get; set; }
+        public string uploaderId { get; set; }
+        public string[] inputColumns { get; set; }
+        public string outputColumn { get; set; }
+        public bool randomOrder { get; set; }
+        public bool randomTestSet { get; set; }
+        public float randomTestSetDistribution { get; set; }
+        public string nullValues { get; set; }
+        public NullValues[] nullValuesReplacers { get; set; }
+
+    }
+}
diff --git a/backend/api/api/Models/Model.cs b/backend/api/api/Models/Model.cs
index 86541767..e88e7e74 100644
--- a/backend/api/api/Models/Model.cs
+++ b/backend/api/api/Models/Model.cs
@@ -18,14 +18,8 @@ namespace api.Models
         public DateTime dateCreated { get; set; }
         public DateTime lastUpdated { get; set; }
         //proveriti id
-        public string datasetId { get; set; }
+        public string experimentId { get; set; }
 
-        //Test set settings
-        public string[] inputColumns { get; set; }
-        public string columnToPredict { get; set; }
-        public bool randomOrder {get;set;}
-        public bool randomTestSet { get; set; }
-        public float randomTestSetDistribution { get; set; }
 
         //Neural net training
         public string type { get; set; }
@@ -44,8 +38,6 @@ namespace api.Models
         public string[] metrics { get; set; }
         public int epochs { get; set; }
 
-        public string nullValues { get; set; }
-        public NullValues[] nullValuesReplacers { get; set; }
 
         //public NullValues[] nullValues { get; set; }
     }
diff --git a/backend/api/api/Models/Predictor.cs b/backend/api/api/Models/Predictor.cs
index 9c8d362f..5fd2aa09 100644
--- a/backend/api/api/Models/Predictor.cs
+++ b/backend/api/api/Models/Predictor.cs
@@ -17,6 +17,7 @@ namespace api.Models
 		public bool isPublic { get; set; }
 		public bool accessibleByLink { get; set; }
 		public DateTime dateCreated { get; set; }
+		public string experimentId { get; set; }
 	}
 }
 
diff --git a/backend/api/api/Program.cs b/backend/api/api/Program.cs
index 2bb97e45..7d5d0c45 100644
--- a/backend/api/api/Program.cs
+++ b/backend/api/api/Program.cs
@@ -34,6 +34,7 @@ builder.Services.AddScoped<IModelService, ModelService>();
 builder.Services.AddScoped<IPredictorService, PredictorService>();
 builder.Services.AddScoped<IFileService, FileService>();
 builder.Services.AddScoped<IJwtToken, JwtToken>();
+builder.Services.AddScoped<IExperimentService, ExperimentService>();
 
 var mlwss = new MLWebSocketService();
 
diff --git a/backend/api/api/Services/DatasetService.cs b/backend/api/api/Services/DatasetService.cs
index 2ff271f3..c43bd236 100644
--- a/backend/api/api/Services/DatasetService.cs
+++ b/backend/api/api/Services/DatasetService.cs
@@ -16,7 +16,7 @@ namespace api.Services
 
         public List<Dataset> SearchDatasets(string name, string username)
         {
-            return _dataset.Find(dataset => dataset.name == name && dataset.isPublic == true).ToList();
+            return _dataset.Find(dataset => dataset.name == name && dataset.isPublic == true && dataset.isPreProcess).ToList();
         }
 
         //kreiranje dataseta
@@ -34,12 +34,12 @@ namespace api.Services
 
         public List<Dataset> GetMyDatasets(string username)
         {
-            return _dataset.Find(dataset => dataset.username == username).ToList();
+            return _dataset.Find(dataset => dataset.username == username && dataset.isPreProcess).ToList();
         }
         public List<Dataset> GetGuestDatasets()
         {
             //Join Igranonica public datasetove sa svim temp uploadanim datasetovima
-            List<Dataset> datasets= _dataset.Find(dataset => dataset.username == "Igrannonica" && dataset.isPublic == true).ToList();
+            List<Dataset> datasets= _dataset.Find(dataset => dataset.username == "Igrannonica" && dataset.isPublic == true && dataset.isPreProcess).ToList();
             datasets.AddRange(_dataset.Find(dataset => dataset.username == "").ToList());
             return datasets;
         }
@@ -47,7 +47,7 @@ namespace api.Services
         //poslednji datasetovi
         public List<Dataset> SortDatasets(string username, bool ascdsc, int latest)
         {
-            List<Dataset> list = _dataset.Find(dataset => dataset.username == username).ToList();
+            List<Dataset> list = _dataset.Find(dataset => dataset.username == username && dataset.isPreProcess).ToList();
 
             if(ascdsc)
                 list = list.OrderBy(dataset => dataset.lastUpdated).ToList();
@@ -59,25 +59,29 @@ namespace api.Services
 
         public List<Dataset> GetPublicDatasets()
         {
-            return _dataset.Find(dataset => dataset.isPublic == true).ToList();
+            return _dataset.Find(dataset => dataset.isPublic == true && dataset.isPreProcess).ToList();
         }
 
         public Dataset GetOneDataset(string username, string name)
         {
-            return _dataset.Find(dataset => dataset.username == username && dataset.name == name).FirstOrDefault();
+            return _dataset.Find(dataset => dataset.username == username && dataset.name == name && dataset.isPreProcess).FirstOrDefault();
         }
         //odraditi za pretragu getOne
 
         public Dataset GetOneDataset(string id)
         {
-            return _dataset.Find(dataset => dataset._id == id).FirstOrDefault();
+            return _dataset.Find(dataset => dataset._id == id && dataset.isPreProcess).FirstOrDefault();
         }
 
         //ako je potrebno da se zameni name  ili ekstenzija
-        public void Update(string username, string name, Dataset dataset)
+        public void Update(string username, string name, Dataset dataset )
         {
             _dataset.ReplaceOne(dataset => dataset.username == username && dataset.name == name, dataset);
         }
+        public void Update(Dataset dataset)
+        {
+            _dataset.ReplaceOne(x=>x._id==dataset._id, dataset);
+        }
 
         
     }
diff --git a/backend/api/api/Services/ExperimentService.cs b/backend/api/api/Services/ExperimentService.cs
new file mode 100644
index 00000000..712568d4
--- /dev/null
+++ b/backend/api/api/Services/ExperimentService.cs
@@ -0,0 +1,26 @@
+using api.Interfaces;
+using api.Models;
+using MongoDB.Driver;
+
+namespace api.Services
+{
+    public class ExperimentService : IExperimentService
+    {
+        private readonly IMongoCollection<Experiment> _experiment;
+        public ExperimentService(IUserStoreDatabaseSettings settings, IMongoClient mongoClient)
+        {
+            var database = mongoClient.GetDatabase(settings.DatabaseName);
+            _experiment = database.GetCollection<Experiment>(settings.ExperimentCollectionName);
+        }
+
+        public Experiment Create(Experiment experiment)
+        {
+            _experiment.InsertOne(experiment);
+            return experiment;
+        }
+        public Experiment Get(string id)
+        {
+            return _experiment.Find(exp=>exp._id == id).FirstOrDefault();
+        }
+    }
+}
diff --git a/backend/api/api/Services/FileService.cs b/backend/api/api/Services/FileService.cs
index 24491124..13f596d0 100644
--- a/backend/api/api/Services/FileService.cs
+++ b/backend/api/api/Services/FileService.cs
@@ -36,6 +36,10 @@ namespace api.Services
                 return null;
             return file.path;
         }
+        public FileModel getFile(string id)
+        {
+            return _file.Find(x=>x._id==id).FirstOrDefault();
+        }
         
     }
 }
diff --git a/backend/api/api/Services/IDatasetService.cs b/backend/api/api/Services/IDatasetService.cs
index 8e62ba43..89856c5b 100644
--- a/backend/api/api/Services/IDatasetService.cs
+++ b/backend/api/api/Services/IDatasetService.cs
@@ -15,5 +15,6 @@ namespace api.Services
         void Update(string username, string name, Dataset dataset);
         void Delete(string username, string name);
         public List<Dataset> GetGuestDatasets();
+        public void Update(Dataset dataset);
     }
 }
diff --git a/backend/api/api/Services/IExperimentService.cs b/backend/api/api/Services/IExperimentService.cs
new file mode 100644
index 00000000..f16f3eae
--- /dev/null
+++ b/backend/api/api/Services/IExperimentService.cs
@@ -0,0 +1,10 @@
+using api.Models;
+
+namespace api.Services
+{
+    public interface IExperimentService
+    {
+        Experiment Create(Experiment experiment);
+        public Experiment Get(string id);
+    }
+}
\ No newline at end of file
diff --git a/backend/api/api/Services/IFileService.cs b/backend/api/api/Services/IFileService.cs
index 7446e283..d65deb48 100644
--- a/backend/api/api/Services/IFileService.cs
+++ b/backend/api/api/Services/IFileService.cs
@@ -6,5 +6,6 @@ namespace api.Services
     {
         FileModel Create(FileModel file);
         string GetFilePath(string id, string username);
+        public FileModel getFile(string id);
     }
 }
\ No newline at end of file
diff --git a/backend/api/api/Services/IMlConnectionService.cs b/backend/api/api/Services/IMlConnectionService.cs
index ee839d28..ea73fb0f 100644
--- a/backend/api/api/Services/IMlConnectionService.cs
+++ b/backend/api/api/Services/IMlConnectionService.cs
@@ -1,8 +1,12 @@
 
+using api.Models;
+
 namespace api.Services
 {
     public interface IMlConnectionService
     {
         Task<string> SendModelAsync(object model, object dataset);
+        Task PreProcess(Dataset dataset, string filePath);
+        //Task<Dataset> PreProcess(Dataset dataset, byte[] file, string filename);
     }
 }
\ No newline at end of file
diff --git a/backend/api/api/Services/MlConnectionService.cs b/backend/api/api/Services/MlConnectionService.cs
index 9c3b3fd8..66f7882a 100644
--- a/backend/api/api/Services/MlConnectionService.cs
+++ b/backend/api/api/Services/MlConnectionService.cs
@@ -1,16 +1,20 @@
-using RestSharp;
+using api.Models;
+using RestSharp;
 using System.Net.WebSockets;
 using System.Text;
+using Newtonsoft.Json;
 
 namespace api.Services
 {
     public class MlConnectionService : IMlConnectionService
     {
         private RestClient client;
+        private readonly IDatasetService _datasetService;
 
-        public MlConnectionService()
+        public MlConnectionService(IDatasetService datasetService)
         {
             this.client = new RestClient("http://127.0.0.1:5543");
+            _datasetService=datasetService;
         }
 
         public async Task<string> SendModelAsync(object model, object dataset)
@@ -20,5 +24,20 @@ namespace api.Services
             var result = await this.client.ExecuteAsync(request);
             return result.Content; //Response od ML microservisa
         }
+        public async Task PreProcess(Dataset dataset,string filePath)//(Dataset dataset,byte[] file,string filename)
+        {
+            var request=new RestRequest("preprocess", Method.Post);//USKLADITI SA ML API
+            request.AddParameter("dataset", JsonConvert.SerializeObject(dataset));
+            //request.AddFile("file", file,filename);
+            request.AddFile("file", filePath);
+            request.AddHeader("Content-Type", "multipart/form-data");
+            var result=await this.client.ExecuteAsync(request);
+            Dataset newDataset = JsonConvert.DeserializeObject<Dataset>(result.Content);
+            newDataset.isPreProcess = true;
+            _datasetService.Update(newDataset);
+
+            return;
+
+        }
     }
 }
diff --git a/backend/api/api/Services/TempRemovalService.cs b/backend/api/api/Services/TempRemovalService.cs
index 9741ace2..d72dc89e 100644
--- a/backend/api/api/Services/TempRemovalService.cs
+++ b/backend/api/api/Services/TempRemovalService.cs
@@ -9,6 +9,7 @@ namespace api.Services
         private readonly IMongoCollection<FileModel> _file;
         private readonly IMongoCollection<Model> _model;
         private readonly IMongoCollection<Dataset> _dataset;
+        private readonly IMongoCollection<Experiment> _experiment;
 
         public TempRemovalService(IUserStoreDatabaseSettings settings, IMongoClient mongoClient)
         {
@@ -16,6 +17,7 @@ namespace api.Services
             _file = database.GetCollection<FileModel>(settings.FilesCollectionName);
             _model= database.GetCollection<Model>(settings.ModelCollectionName);
             _dataset = database.GetCollection<Dataset>(settings.DatasetCollectionName);
+            _experiment= database.GetCollection<Experiment>(settings.ExperimentCollectionName);
         }
         public void DeleteTemps()
         {
@@ -29,11 +31,16 @@ namespace api.Services
                     foreach(var dataset in datasets)
                     {
                         DeleteDataset(dataset._id);
-                        List<Model> models = _model.Find(model => model.datasetId == dataset._id && model.username=="").ToList();
-                        foreach(var model in models)
+                        List<Experiment> experiments = _experiment.Find(experiment=>experiment.datasetId== dataset._id && experiment.uploaderId=="").ToList();
+                        foreach(var experiment in experiments)
                         {
-                            DeleteModel(model._id);
-                        }
+                            DeleteExperiment(experiment._id);
+                            List<Model> models = _model.Find(model => model.experimentId == experiment._id && model.username == "").ToList();
+                            foreach (var model in models)
+                            {
+                                DeleteModel(model._id);
+                            }
+                        }     
                     }
                     if (File.Exists(file.path))
                         File.Delete(file.path);
@@ -67,6 +74,10 @@ namespace api.Services
         {
             _dataset.DeleteOne(dataset => dataset._id == id);
         }
+        public void DeleteExperiment(string id)
+        {
+            _experiment.DeleteOne(experiment => experiment._id == id);
+        }
 
 
     }
diff --git a/backend/api/api/appsettings.json b/backend/api/api/appsettings.json
index f8abae88..81255d5c 100644
--- a/backend/api/api/appsettings.json
+++ b/backend/api/api/appsettings.json
@@ -9,6 +9,7 @@
     }
   },
   "AllowedHosts": "*",
+<<<<<<< HEAD
   "UserStoreDatabaseSettings": {
      //LocalHost
     
@@ -21,6 +22,20 @@
     "FilesCollectionName": "Files"
     
     /*
+=======
+    "UserStoreDatabaseSettings": {
+        /* LocalHost
+    */
+        "ConnectionString": "mongodb://127.0.0.1:27017/",
+        "DatabaseName": "si_project",
+        "CollectionName": "users",
+        "DatasetCollectionName": "Dataset",
+        "ModelCollectionName": "Model",
+        "PredictorCollectionName": "Predictor",
+        "FilesCollectionName": "Files",
+        "ExperimentCollectionName": "Experiment"
+        /*
+>>>>>>> 499f641683767d2da735fb760c89f0c611e37596
     "ConnectionString": "mongodb+srv://si_user:si_user@sidatabase.twtfm.mongodb.net/myFirstDatabase?retryWrites=true&w=majority",
     "DatabaseName": "si_db",
     "CollectionName": "users",
@@ -28,5 +43,5 @@
     "ModelCollectionName": "Model",
     "PredictorCollectionName": "Predictor",
     "FilesCollectionName": "Files"*/
-  }
+    }
 }
\ No newline at end of file