#include <iostream>
#include "bboard.h"
#include "user.h"
#include "message.h"
#include <cstdlib>

using namespace std;

//Start of private functions

/** Diplays all messages to the user. If there are no messages, "Nothing to
 *  Diplay" will be show, */

void Bboard:: message_display()
{
  if (message_list.size() == 0)
  {
    cout <<"\nNothing to Display.\n";
  }
  else
  {
    cout << "\n------------------------------------\n";
    for (unsigned x = 0; x < message_list.size(); x++)
    {
      cout << "Message #" << x+1 << ": ";
      message_list[x].display();
    }
  }
}

/** Asks the user for the subject name and body of the message. Once the user
 *  has entered the subject and body, the message gets stored in a vector. */

void Bboard:: add_message()
{
  char sub[256], body[256];
  const string author = current_user.get_username();
  cout << "\nEnter Subject: ";
  cin.getline(sub, 256);
  cin.getline(sub, 256);

  cout << "Enter Body: ";
  cin.getline(body, 256);

  Message msg(author, sub, body);       //Creates a new message named msg

  message_list.push_back(msg);
  cout << "Message Recorded!\n";
}

//Start of public functions

/** default bboard constructor. */

Bboard:: Bboard()
:title("The Most Epic Board of All Boards"), user_list(), current_user(User()),
  message_list()
{
}

/** bboard constructor that takes in the name of the board as the parameter */

Bboard:: Bboard(const string& ttl)
:title(ttl), user_list(), current_user(User()), message_list()
{
}

/** reads in a text file with usernames and passwords and stores them in
 *  in a vector. The text file must have a username, space, and a password
 *  on each line. When there are no more users, add "end" under the last
 *  username. */

void Bboard:: setup()
{
  string usr;
  string pw;

  cin >> usr;

  while (usr != "end")
  {
    cin >> pw;
    User new_user(usr, pw);
    user_list.push_back(new_user);
    cin >> usr;
  }
}

/** prompts the user to enter thair username and password. If one of them is
 *  invalid, the user will have to enter their username and password again. */

void Bboard:: login()
{
  string usr;
  string pw;
  bool real_user = false;  //Will become true if the user is valid.

  cout << "Enter your username (\'Q\' or \'q\' to quit): ";
  cin >> usr;

  if (usr == "Q" || usr == "q")
  {
    cout << "Bye!" << endl;
    exit(0);
  }

  cout << "Enter your password: ";
  cin >> pw;

  for (unsigned x = 0; x < user_list.size(); x++)
  {
    if (user_list[x].check(usr, pw))
    {
      current_user = user_list[x];
      cout << "\nWelcome back " << current_user.get_username() << "!\n";
      real_user = true;
    }
  }
  if (!real_user)
  {
    cout << "Invalid Username or Password!\n" << endl;
    login();
  }
}

/** prompts the user with the menu of the board. The user can quit, add a new
 *  message, or display all messages. */

void Bboard:: run()
{
  char choice;

  cout << "\nMenu\n";
  cout << "  - Display Messages (\'D\' or \'d\')\n";
  cout << "  - Add New Message (\'N\' or \'n\')\n";
  cout << "  - Quit (\'Q\' or \'q\')\n";
  cout << "Choose an action: ";
  cin >> choice;

  if (choice == 'D' || choice == 'd')
  {
    message_display();
    run();
  }
  else if (choice == 'N' || choice == 'n')
  {
    add_message();
    run();
  }
  else if (choice == 'Q' || choice == 'q')
  {
    cout << "Bye!\n";
    exit(0);
  }
  else
  {
    cout << "\nInvalid entry\n";
    run();
  }
}

/** returns the title of the bboard */

string Bboard:: get_title()
{
  return title;
}