public void DeleteUser(User user)
{
if (user == null)
throw new ArgumentNullException(nameof(user));
if (user.Id == null)
throw new ArgumentNullException(nameof(user.Id));
if (_userRepo.GetById(user.Id) == null)
throw new ArgumentException(nameof(user));
_userRepo.Delete(user);
}
public void AddUser(User user)
{
if (user == null)
throw new ArgumentNullException(nameof(user));
if (user.Name == null)
throw new ArgumentNullException(nameof(user.Name));
user.Id = ObjectId.GenerateNewId().ToString();
_userRepo.Add(user);
}
public void Delete(User user)
{
_db.AppUsers()
.DeleteOne(x => x.Id == user.Id);
}
public void Update(User user)
{
_db.AppUsers()
.FindOneAndReplace(x => x.Id == user.Id, user);
}
public void Add(User user)
{
_db.AppUsers()
.InsertOne(user);
}
public void Run()
{
Console.WriteLine("Welcome to a MongoDB Sample program.");
var userService = GetNewUserService();
while (true)
{
var opt = Menu();
switch (opt)
{
case 1:
var users = userService.GetAllUsers();
foreach (var user in users)
{
Console.WriteLine(user.ToString());
}
break;
case 2:
Console.Write("Please enter a name to lookup |> ");
var name = Console.ReadLine();
var queriedUser = userService.GetUserByName(name);
if (queriedUser == null)
{
Console.WriteLine("Could not find user by that name");
break;
}
Console.WriteLine(queriedUser.ToString());
break;
case 3:
Console.Write("Please enter a name |> ");
var newName = Console.ReadLine();
Console.Write("Please enter a value for the mutable field |> ");
var newMutableValue = Console.ReadLine();
if (userService.GetUserByName(newName) != null)
{
Console.WriteLine("A user by this name already exists!");
break;
}
var newUser = new User
{
Name = newName,
MutableField = newMutableValue
};
userService.AddUser(newUser);
break;
case 4:
Console.Write("Please enter the name of the user to update |> ");
name = Console.ReadLine();
if (name == "Will" || name == "Tim" || name == "Tari" || name == "Richard")
{
Console.WriteLine("These users cannot be deleted");
break;
}
var userToUpdate = userService.GetUserByName(name);
if (userToUpdate == null)
{
Console.WriteLine("Could not find user by that name");
break;
}
Console.WriteLine("Please enter a new mutable value |> ");
userToUpdate.MutableField = Console.ReadLine();
userService.UpdateUser(userToUpdate);
break;
case 5:
Console.Write("Please enter the name of the user to delete |> ");
name = Console.ReadLine();
if (name == "Will" || name == "Tim" || name == "Tari" || name == "Richard")
{
Console.WriteLine("These users cannot be deleted");
break;
}
var userToDelete = userService.GetUserByName(name);
if (userToDelete == null)
{
Console.WriteLine("Could not find user by that name");
break;
}
userService.DeleteUser(userToDelete);
break;
case 6:
Console.WriteLine("Goodbye!");
return;
}
}
}
