/* This the Jabber-like-GnuPG-Instant-Messenger (JlGIM) by */
/* MMB and DK */

#include <ncurses.h>
#include <form.h>
#include <iostream>
using namespace std;

void initializeNcurses(void);
void endNcurses(void);
void selectCommunication(void);
void printHello(void);

const int ESCAPE = 27;
const int BACKSPACE = 127;
const int DEL = 330;

int main()
{	
  initializeNcurses();

  printHello();
  selectCommunication();

  endNcurses();
  return 0;
}

/* This sets the nCurses environment, which we need to display stuff
   on the terminal */

void initializeNcurses() { 
  initscr();			
  keypad(stdscr, 1);		// We need this for arrow keys etc.
  cbreak(); 			// Give characters to our programme immedaitely
  start_color();
  init_pair(1, COLOR_RED, COLOR_BLACK);
  init_pair(2, COLOR_BLACK, COLOR_BLACK);
}

/* We probably will be glad of having it separated when there's more
   to do than to simply endwin Ncurses. At least it makes things a bit
   tidier */

void endNcurses() {
  endwin();			
}

void selectCommunication() {
  char ch;
  int where = 0;
  FIELD *field[4];
  FORM  *my_form;

  noecho();

  field[0] = new_field(1, 50, 4, 25, 0, 0);
  field[1] = new_field(1, 50, 6, 25, 0, 0);
  field[2] = new_field(1, 50, 9, 25, 0, 0);
  field[3] = NULL;

  /* field options */
  set_field_back(field[0], A_UNDERLINE);
  field_opts_off(field[0], O_AUTOSKIP);
	
  set_field_back(field[1], A_UNDERLINE);
  field_opts_off(field[1], O_AUTOSKIP);
 
  set_field_back(field[2], A_UNDERLINE); 
  field_opts_off(field[2], O_AUTOSKIP);

  /* Create the form and post it */
  my_form = new_form(field);
  post_form(my_form);
  refresh();

  /* General forms stuff */
  mvprintw(4, 2, "Your fingerprint:");
  mvprintw(6, 2, "Your password:");
  mvprintw(9, 2, "Contact's fingerprint:");
  mvprintw(4, 25, "");
  set_current_field(my_form, field[0]);
  form_opts_off(my_form, O_BS_OVERLOAD);
  curs_set(1);
  refresh();

  /* Loop through to get user requests */
  while((ch = getch()) != ESCAPE) {	
    switch(ch) {	
    case KEY_DOWN:
      form_driver(my_form, REQ_NEXT_FIELD);
      form_driver(my_form, REQ_END_LINE);
      if(2 == where)
	where = 0;
      else
	where++;
      break;
    case KEY_UP:
      form_driver(my_form, REQ_PREV_FIELD);
      form_driver(my_form, REQ_END_LINE);
      if(0 == where)
	where = 2;
      else
	where--;
      break;
    case BACKSPACE:
    case DEL:
      form_driver(my_form, REQ_DEL_PREV);
      form_driver(my_form, REQ_END_LINE);
      break;    
    default:	
      if(where == 1) {
	// xform_driver(my_form, 42);
	break; 
      }
      form_driver(my_form, ch);
      break;
    }
  }

  /* Unpost form and free the memory */
  unpost_form(my_form);
  free_form(my_form);
  free_field(field[0]);
  free_field(field[1]); 
  free_field(field[2]);
}

void printHello() {
  char greeting [] = "This the Jabber-like-GnuPG-Instant-Messenger (JlGIM) by DK and MMB";
  curs_set(0);

  getmaxyx(stdscr,LINES,COLS);
  attron(A_BOLD | COLOR_PAIR(1));
  mvprintw(LINES/2,((COLS/2)-(strlen(greeting)/2)),"%s",greeting);	
  attroff(A_BOLD | COLOR_PAIR(1));
  refresh();
  halfdelay(30);
  getch();
  cbreak();
}