CareerCup

login_info = { 'tries' : 0 , 'last_successful' : time() }

def is_account_hacked( user_name , max_tries ){
    login_info = LOGIN_INFO[ user_name ]
    #atomic {
    success = login( user_name )
    current = time() 
    if ( success ){
       login_info.last_successful = current
       login_info.tries = 0 
       return false
    }
    login_info.tries += 1 
    return (  current - login_info.last_successful <= 36000000 &&
         login_info.tries >= n )
  }
}

class LoginFailureInfo {
    long initialFailureTime
    int attempt = 0
}

class LoginHelper {
    def failureTable = [:] // Hash Map of User to LoginFailureInfo
    
    def login(String user, String password) {
        if (loginFailed) {
            def hacked = isAccountHacked(user) // isAccountHacked is called when login fails
            // Do something appropriate if hacked
        } else {
            // Successful login. Remove failure info from hash map
            if (failureTable[user]) {
                failureTable.remove(user)
            }
        }
    }
    
    def isAccountHacked(String user) {
        // Check for previous attempts and reset counter
        // if the current failure is occuring after 36000 millis
        def currentTime = new Date().getTime()
        
        if (failureTable[user]) { // If a previous failed attempt exists
            if (currentTime - failureTable[user].initialFailureTime > 36000) {
                failureTable[user].initialFailureTime = currentTime // reset the time
                failureTable[user].attempt = 1 // reset the counter to 1
            } else {
                failureTable[user].attempt++
            }
        } else {
            // If this is the first failure, add a new entry to map
            failureTable << [user: new LoginFailureInfo(initialFailureTime: currentTime, attempt: 1)]
        }
        
        // Check the number of failures from hash map
        if (failureTable[user].attempts >= 5) {
            true
        } else {
            false
        }
    }
}

class LoginFailureInfo {
    long initialFailureTime
    int attempt = 0
}

class LoginHelper {
    def failureTable = [:] // Hash Map of User to LoginFailureInfo
    
    def login(String user, String password) {
        if (loginFailed) {
            def hacked = isAccountHacked(user) // isAccountHacked is called when login fails
            // Do something appropriate if hacked
        } else {
            // Successful login. Remove failure info from hash map
            if (failureTable[user]) {
                failureTable.remove(user)
            }
        }
    }
    
    def isAccountHacked(String user) {
        // Check for previous attempts and reset counter
        // if the current failure is occuring after 36000 millis
        def currentTime = new Date().getTime()
        
        if (failureTable[user]) { // If a previous failed attempt exists
            if (currentTime - failureTable[user].initialFailureTime > 36000) {
                failureTable[user].initialFailureTime = currentTime // reset the time
                failureTable[user].attempt = 1 // reset the counter to 1
            } else {
                failureTable[user].attempt++
            }
        } else {
            // If this is the first failure, add a new entry to map
            failureTable << [user: new LoginFailureInfo(initialFailureTime: currentTime, attempt: 1)]
        }
        
        // Check the number of failures from hash map
        if (failureTable[user].attempts >= 5) {
            true
        } else {
            false
        }
    }
}

public class AccountHackHelper
{
int n;
SortedList<DateTime, DateTime> store;

public AccountHackHelper(int n)
{
this.n = n;
store = new SortedList<DateTime, DateTime>(n);
}



public bool IsAccountHacked(string userName, DateTime currentDate)
{
StoreFailedLogin(currentDate);

if (store.Count == n && (currentDate - store.First().Value).TotalSeconds < 3600 )
{
return true;
}

return false;
}

private void StoreFailedLogin(DateTime currentDate)
{
if (store.Count == n) { store.RemoveAt(0); }
store.Add(currentDate, currentDate);
}

}