/// <summary>
/// Adds user and returns reference it. If the user already exists
/// return the reference to the existing user instead.
/// </summary>
/// <param name="user"> The user. </param>
/// <returns> Added User. </returns>
public User Add(User user)
{
// Check if the collection contains the user.
if (!_users.Values.Any(x => x.Id == user.Id && x.Name == user.Name && x.DateOfBirth == user.DateOfBirth))
{
int lastId = _users.Count == 0
? 0
: _users.Keys.Max();
user.Id = lastId + 1;
_users.Add(user.Id, user);
foreach (int awardId in UsersAwardsDao.GetByUserId(user.Id))
{
user.Awards.Add(AwardDao._awards[awardId]);
}
ExportListToFile();
return(user);
}
else
{
return(_users.Values.FirstOrDefault(x => x.Equals(user)));
}
}
/// <summary>
/// Initializes the dictionary of users.
/// </summary>
static UserDao()
{
// Check if containing users file exists.
if (File.Exists(_usersFileName))
{
string temp = string.Empty;
using (var sr = new StreamReader(_usersFileName))
{
temp = sr.ReadToEnd();
}
_users = JsonConvert.DeserializeObject <Dictionary <int, User> >(temp);
if (_users == null)
{
_users = new Dictionary <int, User>();
}
else
{
using (var sw = new StreamWriter(_usersFileName))
{
sw.WriteLine(JsonConvert.SerializeObject(_users));
}
}
}
else
{
// Create new dictionary of users.
_users = new Dictionary <int, User>();
}
// Add all users awards.
foreach (var user in _users.Values)
{
foreach (int awardId in UsersAwardsDao.GetByUserId(user.Id))
{
user.Awards.Add(AwardDao._awards[awardId]);
}
}
}