/// <summary>
/// Saving user statistics both in the storage and in the json file database
/// if user is identified by his/her authorization <paramref name="token"/>.
/// </summary>
/// <param name="token">User's authorization token.</param>
/// <param name="outcome">Game outcome. One of <see cref="GameOutcome"/></param>
/// <param name="move">Chosen move option. One of <see cref="MoveOptions"/></param>
/// <returns>Returns true if user was found by token, else returns false.</returns>
public async Task <bool> SaveAsync(string token, GameOutcome outcome, MoveOptions move)
{
// get user id
var userWithToken = (await _tokens.GetAllAsync()).Where(tk => tk.Item == token).FirstOrDefault();
// if user was not found
if (userWithToken == null)
{
// only one logger message here so as not to litter the file with messages
// about saving statistics, since this method will be called very often
_logger.LogInformation($"{nameof(StatisticsService)}: User was not identified for saving statistics. The authorization token did not exist or expired.");
return(false);
}
// get user id
var userId = userWithToken.Id;
// add user statistics to the storage if it doesn't exist
await _statistics.AddAsync(new UserStatistics(userId), userId, new StatisticsEqualityComparer());
// change state
var record = await _statistics.GetAsync(userId);
record.AddRoundInfo(DateTime.Now, outcome, move);
// map with StatisticsDb
var statisticsToSave = ModelsMapper.ToStatisticsDb(record);
//save to file
await _jsonDataService.WriteAsync(_options.StatisticsPath + $"{userId}.json", statisticsToSave);
return(true);
}
/// <summary>
/// Saving user both in the storage and in the json file database.
/// </summary>
/// <param name="login">User login.</param>
/// <param name="password">User password.</param>
/// <returns>Returns whether the user was saved.
/// True if user was saved.
/// False if user was not saved (because already exists).
/// </returns>
public async Task <bool> SaveAsync(string login, string password)
{
_logger.LogInformation($"{nameof(UsersService)}: Saving a new user.");
// add user to the user storage
var userId = await _users.AddAsync(new User(login, password), null, new UserEqualityComparer());
// if user was not added because already exists
if (userId == null)
{
_logger.LogInformation($"{nameof(UsersService)}: User was not added because the login {login} already exists.");
return(false);
}
_logger.LogInformation($"{nameof(UsersService)}: New user with login {login} was added to the storage.");
// create empty statistics for the new user in memory storage
var userStatistics = new UserStatistics((int)userId);
await _statistics.AddAsync(userStatistics, (int)userId);
_logger.LogInformation($"{nameof(UsersService)}: Empty statistics for the new user with login {login} was added to the storage.");
// save empty statistics for the new user to the json-file database
var statisticsToSave = ModelsMapper.ToStatisticsDb(userStatistics);
await _statDataService.WriteAsync($"{_options.StatisticsPath}{userId}.json", statisticsToSave);
_logger.LogInformation($"{nameof(UsersService)}: Empty statistics for the new user with login {login} was saved to the file {_options.StatisticsPath}{userId}.json.");
// get all users
var users = await _users.GetAllAsync();
// map with UserDb
var usersToSave = users.Select(user => ModelsMapper.ToUserDb(user.Id, user.Item));
// save to file
await _userDataService.WriteAsync(_options.UsersPath, usersToSave);
_logger.LogInformation($"{nameof(UsersService)}: All users were rewritten in {_options.UsersPath}.");
return(true);
}
