// Getting BlindtestClass Object from MainPage, then loading list of users
protected override void OnNavigatedTo(NavigationEventArgs e)
{
// If a parameter is given, and if it's a BlindtestClass element
if (e.Parameter is BlindtestClass)
{
// Get main element
var bt = e.Parameter;
blindtest = (BlindtestClass)bt;
// Filling listView with users according to dataTemplate
ObservableCollection <BTUser> listItems = new ObservableCollection <BTUser>();
foreach (BTUser user in blindtest.getAllUsers())
{
listItems.Add(user);
}
users_listView.ItemsSource = listItems;
selected_user = blindtest.getSelectedUser();
if (!selected_user.Equals(default(BTUser)))
{
// Check if user still exist
if (blindtest.checkIfUserExist(selected_user) == true)
{
userInformation_label.Text = "User information - Selected User : " + selected_user.nickname;
BitmapImage bmpImg = new BitmapImage();
bmpImg.UriSource = new Uri(selected_user.profile_picture);
profilePicture_Image.Source = bmpImg;
users_listView.SelectedIndex = blindtest.getSelectedUserIndex();
}
}
}
}
// Delete playlist
// 0 : no error
// 1 : user doesn't exist in database
// 2 : invalid password
// 42: Get error string to know what happend
public int deletePlaylist(BTUser user_src, string password, int playlist_index)
{
int status = 0;
bool user_exists = false;
BTUser user_selected = new BTUser();
try
{
// First, check if user exists in db (using userID)
foreach (BTUser user in database.user)
{
if (user.user_id == user_src.user_id)
{
user_exists = true;
user_selected = user;
}
}
// If user doesn't exists
if (user_exists == false)
{
status = 1;
}
else
{
// Check if password is incorrect
if (hashPassword(password) != user_selected.password)
{
status = 2;
}
else
{
foreach (BTUser user in database.user)
{
if (user.user_id == user_selected.user_id)
{
// Removing playlist from database
user.playlists.Remove(user.playlists[playlist_index]);
// Saving changes
saveDatabase();
}
}
}
}
}
// In case of other error
catch (Exception ex)
{
status = 42;
error = ex.Message;
}
return(status);
}
// Edit user
// 0 : no error
// 1 : name, password or URL empty
// 2 : invalid PP URL
// 3 : Invalid password
// 42: Get error string to know what happend
public int editUser(int user_index, string src_name, string src_profilepicture_url, string password)
{
int status = 0;
try
{
// checks if source strings are empty
if (src_name == "" || src_profilepicture_url == "" || password == "")
{
status = 1;
}
// If they aren't empty
else
{
// Check if source PP URL is valid
if (Uri.IsWellFormedUriString(src_profilepicture_url, UriKind.Absolute))
{
// Creating new user
BTUser edited_user = database.user[user_index];
edited_user.nickname = src_name;
edited_user.profile_picture = src_profilepicture_url;
// Check if password is the same as user's one
if (edited_user.password == hashPassword(password))
{
// Editing user in database
database.user[user_index] = edited_user;
// Saving changes to database.json file
saveDatabase();
}
else
{
status = 3;
}
}
else
{
status = 2;
}
}
}
catch (Exception ex)
{
status = 42;
error = ex.Message;
}
return(status);
}
// Check if users exists in database (by given BTUser Object)
// Returns true if user exists, false if it doesn't
public bool checkIfUserExist(BTUser user_src)
{
bool status = false;
// Check if user exists according to userID
foreach (BTUser user in database.user)
{
if (user.user_id == user_src.user_id)
{
status = true;
}
}
return(status);
}
// Get specified user by userID
public BTUser getUserByUserID(int userID)
{
BTUser user_to_return = new BTUser();
user_to_return.nickname = "INVALID";
// Check if user exists in database
foreach (BTUser user in database.user)
{
if (user.user_id == userID)
{
user_to_return = user;
}
}
return(user_to_return);
}
// When an item is selected in listView, display info in UI
private void Users_listView_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (users_listView.SelectedIndex != -1)
{
selected_user = (BTUser)users_listView.SelectedItem;
userInformation_label.Text = "User information - Selected User : "******"ms-appx:///Assets/Users/unselected-user.png");
profilePicture_Image.Source = bmpImg;
}
}
// Create new user
// 0 : no error
// 1 : name, password or URL empty
// 2 : invalid PP URL
// 3 : username already gaven
// 42: Get error string to know what happend
public int createUser(string src_name, string src_profilepicture_url, string password)
{
int status = 0;
try
{
// checks if source strings are empty
if (src_name == "" || src_profilepicture_url == "" || password == "")
{
status = 1;
}
// If they aren't empty
else
{
// Check if source PP URL is valid
if (Uri.IsWellFormedUriString(src_profilepicture_url, UriKind.Absolute))
{
// Default userID is equal to 0 (first one)
int userID = 0;
// if users already exists, generating random userID between 0 and 10000
if (database.user.Count != 0)
{
List <int> userID_list = new List <int>();
// Getting every existing userID
foreach (BTUser user in database.user)
{
userID_list.Add(user.user_id);
}
// To generate random int between 0 and 10000
Random random_int = new Random();
bool loop_state = false;
while (loop_state == false)
{
// Generating userID
userID = random_int.Next(0, 10000);
// Checking if it exists
foreach (int i in userID_list)
{
// If userID not attributed, exit the loop
if (userID != i)
{
loop_state = true;
}
else
{
loop_state = false;
}
}
}
}
// Creating new user
BTUser new_user = new BTUser();
new_user.user_id = userID;
new_user.nickname = src_name;
new_user.profile_picture = src_profilepicture_url;
new_user.playlists = new List <BTPlaylist>();
// Hashing password
new_user.password = hashPassword(password);
// Check if username is already given to someone in db
if (checkIfUserExist(new_user.nickname) == true)
{
status = 3;
}
else
{
// Adding user to database
database.user.Add(new_user);
// Saving changes to database.json file
saveDatabase();
}
}
else
{
status = 2;
}
}
}
catch (Exception ex)
{
status = 42;
error = ex.Message;
}
return(status);
}
// Set selected user (in this class)
public void setSelectedUser(BTUser user_selected, int user_index)
{
selected_user = user_selected;
selected_user_index = user_index;
}
// Delete game
// 0 : no error
// 1 : user doesn't exist in database
// 2 : game doesn't exist in database
// 3 : game isn't created by given user!
// 4 : invalid password
// 42: Get error string to know what happend
public int deleteGame(BTUser user_src, BTGame game_src, string password)
{
int status = 0;
bool user_exists = false, game_exists = false;
BTUser user_selected = new BTUser();
BTGame game_selected = new BTGame();
try
{
// First, check if user exists in db (using userID)
foreach (BTUser user in database.user)
{
if (user.user_id == user_src.user_id)
{
user_exists = true;
user_selected = user;
}
}
// If user doesn't exists
if (user_exists == false)
{
status = 1;
}
else
{
// Check if game exists in database
foreach (BTGame game in database.game)
{
if (game.game_id == game_src.game_id)
{
game_selected = game;
game_exists = true;
}
}
// if game exists
if (game_exists == true)
{
// Check if game is made by given user
if (user_src.user_id == game_selected.user_id)
{
// Check if password is incorrect
if (hashPassword(password) != user_selected.password)
{
status = 4;
}
else
{
// Delete game in database
database.game.Remove(game_selected);
// Save changes
saveDatabase();
}
}
else
{
status = 3;
}
}
else
{
status = 2;
}
}
}
// In case of other error
catch (Exception ex)
{
status = 42;
error = ex.Message;
}
return(status);
}
