/*

  input.c

  Handles keypad (and other?) input from the user.

  Currently, the keys are as follows:

  Context     Key      Function
  -------     ---      --------
  Normal               "normal" context is handled in this source file.
              A        Pause/Continue
              B        Back(Go to previous screen)
	      C        Forward(Go to next screen)
	      D        Open main menu
              E-Z      Sent to client, if any; ignored otherwise

 (menu keys are not handled here, but in the menu code)
  Menu
              A        Enter/select
	      B        Up/Left
	      C        Down/Right
	      D        Exit/Cancel
	      E-Z      Ignored
*/

#include <stdlib.h>
#include <stdio.h>

#include "../shared/sockets.h"
#include "../shared/debug.h"

#include "drivers/lcd.h"

#include "client_data.h"
#include "clients.h"
#include "screen.h"
#include "screenlist.h"
#include "menus.h"

#include "input.h"


int server_input (int key);

// FIXME!  The server tends to crash when "E" is pressed..  (?!)
// (but only when the joystick driver is the last one on the list...)

// Checks for keypad input, and dispatches it
int
handle_input ()
{
   char str[256];
   int key;
   screen *s;
   client *c;

   key = lcd.getkey ();

   if (!key)
      return 0;

   debug ("handle_input(%c)\n", (char) key);

   if (key) {
      s = screenlist_current ();
      if (s) {
	 c = s->parent;
	 if (c) {
	    // TODO:  Interpret and translate keys!
	    // If the client should have this keypress...
	    // Send keypress to client
	    if (key >= 'E' && key <= 'Z') {
	       // TODO:  Implement client "acceptable key" lists
	       sprintf (str, "key %c\n", key);
	       sock_send_string (c->sock, str);
	    }
	    // Otherwise, tell the server about it.
	    else {
	       server_input (key);
	    }
	 } else {
	    // If no parent, it means we're on the server screen.
	    // so, the server gets all keypresses there.
	    server_input (key);
	 }
      }
   }

   return 0;
}



int
server_input (int key)
{
   debug ("server_input(%c)\n", (char) key);

   switch (key) {
   case 'A':
      if (screenlist_action == SCR_HOLD)
	 screenlist_action = 0;
      else
	 screenlist_action = SCR_HOLD;
      break;
   case 'B':
      screenlist_action = SCR_BACK;
      screenlist_prev ();
      break;
   case 'C':
      screenlist_action = SCR_SKIP;
      screenlist_next ();
      break;
   case 'D':
      debug ("got the menu key!\n");
      server_menu ();
      break;
   default:
      debug ("server_input: Invalid key \"%c\" (%i)\n", (char) key, key);
      break;
   }

   return 0;
}