#ifndef USER_MANAGER_H
#define USER_MANAGER_H

#include <map>
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <sstream>

/**
 * @Class UserManager
 *
 * Handle differnt users with passwords and store them
 */
class UserManager {
public:

  /**
   * Makes shure that there is a user storage.
   * If not. It creates a new one
   */
  static void init();

  /**
   * Checks if a given user with password is valid
   *
   * @param user the name of the users
   * @param pw password in plain text
   */
  static bool isAllowed(std::string user, std::string pw);

  /**
   * Add a new user and write to storage.
   *
   * @param user the name of the users
   * @param pw password in plain text
   */
  static void addUser(std::string name, std::string pw);

  /**
   * Delete a new user and delete from storage.
   *
   * @param user the name of the users
   * @param pw password in plain text
   */
  static void deleteUser(std::string name, std::string pw);
private:

  /**
   * Read data from file and create map.
   *
   * @param user_map pointer to the map
   */
  static void readFromFile(std::map<std::string,std::string> *user_map);

  /**
   * Write data to afile
   *
   * @param user_map pointer to the map
   */
  static void writeToFile(std::map<std::string,std::string> *user_map);
};


#endif