8 files changed, 96 insertions, 3 deletions
diff --git a/Backend/Api/Api/Api.csproj b/Backend/Api/Api/Api.csproj
index f8d2732..eeacb93 100644
--- a/Backend/Api/Api/Api.csproj
+++ b/Backend/Api/Api/Api.csproj
@@ -13,8 +13,6 @@
 
   <ItemGroup>
     <Folder Include="Controllers\" />
-    <Folder Include="Models\" />
-    <Folder Include="Services\" />
   </ItemGroup>
 
 </Project>
diff --git a/Backend/Api/Api/Database/DatabaseConnection.cs b/Backend/Api/Api/Database/DatabaseConnection.cs
index 560eaee..65f4f52 100644
--- a/Backend/Api/Api/Database/DatabaseConnection.cs
+++ b/Backend/Api/Api/Database/DatabaseConnection.cs
@@ -6,5 +6,6 @@ namespace Api.Database
     {
         public string ConnectionString { get; set; } = String.Empty;
         public string DatabaseName { get; set; } = String.Empty;
+        public string UserCollectionName { get; set; } = String.Empty;
     }
 }
diff --git a/Backend/Api/Api/Interfaces/IDatabaseConnection.cs b/Backend/Api/Api/Interfaces/IDatabaseConnection.cs
index ca5e320..8938127 100644
--- a/Backend/Api/Api/Interfaces/IDatabaseConnection.cs
+++ b/Backend/Api/Api/Interfaces/IDatabaseConnection.cs
@@ -4,5 +4,6 @@
     {
         string ConnectionString { get; set; }
         string DatabaseName { get; set; }
+        string UserCollectionName { get; set; }
     }
 }
diff --git a/Backend/Api/Api/Interfaces/IUserService.cs b/Backend/Api/Api/Interfaces/IUserService.cs
new file mode 100644
index 0000000..6de648e
--- /dev/null
+++ b/Backend/Api/Api/Interfaces/IUserService.cs
@@ -0,0 +1,14 @@
+using Api.Models;
+
+namespace Api.Interfaces
+{
+    public interface IUserService
+    {
+        User createUser(User user);
+        List<User> getUsers();
+        User getUserByEmail(String email);
+        User getUserByUsername(String username);
+        User updateUser(User user);
+        Boolean deleteUser(String email);
+    }
+}
diff --git a/Backend/Api/Api/Models/User.cs b/Backend/Api/Api/Models/User.cs
new file mode 100644
index 0000000..eb7d1e8
--- /dev/null
+++ b/Backend/Api/Api/Models/User.cs
@@ -0,0 +1,17 @@
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace Api.Models
+{
+    public class User
+    {
+        [BsonId]
+        [BsonRepresentation(BsonType.ObjectId)]
+        public String _id { get; set; }
+        public String name { get; set; }
+        public String username { get; set; }
+        public String email { get; set; }
+        public String password { get; set; }
+        public DateTime creationDate { get; set; }
+    }
+}
diff --git a/Backend/Api/Api/Program.cs b/Backend/Api/Api/Program.cs
index 2dfd84d..7ae8798 100644
--- a/Backend/Api/Api/Program.cs
+++ b/Backend/Api/Api/Program.cs
@@ -1,5 +1,6 @@
 using Api.Database;
 using Api.Interfaces;
+using Api.Services;
 using Microsoft.Extensions.Options;
 using MongoDB.Driver;
 
@@ -16,6 +17,8 @@ builder.Services.AddSingleton<IDatabaseConnection>(sp =>
 builder.Services.AddSingleton<IMongoClient>(s =>
     new MongoClient(builder.Configuration.GetValue<string>("DatabaseSettings:ConnectionString")));
 
+builder.Services.AddScoped<IUserService, UserService>();
+
 builder.Services.AddControllers();
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
 builder.Services.AddEndpointsApiExplorer();
diff --git a/Backend/Api/Api/Services/UserService.cs b/Backend/Api/Api/Services/UserService.cs
new file mode 100644
index 0000000..787cf6a
--- /dev/null
+++ b/Backend/Api/Api/Services/UserService.cs
@@ -0,0 +1,58 @@
+using Api.Interfaces;
+using Api.Models;
+using MongoDB.Driver;
+
+namespace Api.Services
+{
+    public class UserService : IUserService
+    {
+        private readonly IMongoCollection<User> _users;
+        public UserService(IDatabaseConnection settings, IMongoClient mongoClient)
+        {
+            var database = mongoClient.GetDatabase(settings.DatabaseName);
+            _users = database.GetCollection<User>(settings.UserCollectionName);
+
+        }
+
+        public User createUser(User user)
+        {
+            _users.InsertOne(user);
+            return user;
+        }
+
+        public bool deleteUser(string email)
+        {
+            _users.FindOneAndDelete(x => x.email == email);
+            return true;
+        }
+
+        public User getUserByEmail(string email)
+        {
+            return _users.Find(x => x.email == email).First();
+        }
+
+        public User getUserByUsername(string username)
+        {
+            return _users.Find(x => x.username == username).First();
+        }
+
+        public List<User> getUsers()
+        {
+            return _users.Find(_=>true).ToList();
+        }
+
+        public User updateUser(User user)
+        {
+            /*
+             * ovako je odradjeno da bi radilo i kada se posalje potpuno novi objekat User-a bez generisanog _id polja
+             */
+            User foundUser = _users.Find(x => x.email == user.email).First();
+            if (foundUser!=null && user._id==null)
+            {
+                user._id = foundUser._id;
+            }
+            _users.ReplaceOne(x => x.email == user.email, user);
+            return user;
+        }
+    }
+}
diff --git a/Backend/Api/Api/appsettings.json b/Backend/Api/Api/appsettings.json
index c2cbe28..e02ac8d 100644
--- a/Backend/Api/Api/appsettings.json
+++ b/Backend/Api/Api/appsettings.json
@@ -9,7 +9,8 @@
   "DatabaseSettings": {
 
     "ConnectionString": "mongodb://127.0.0.1:27017/",
-    "DatabaseName": "Odyssey"
+    "DatabaseName": "Odyssey",
+    "UserCollectionName": "users"
 
   }
 }