#include <stddef.h>
#include "../headers/glut_input.h"
#include "../headers/input/input_events.h"

#include <stdio.h> /* a single printf */

void ( *keyboard_callback) ( unsigned char key, int x, int y) = NULL;
void ( *mouse_motion_callback) ( int x, int y) = NULL;

void warp_pointer_implementation( int x, int y){}

void assignKeyboardCallback( void ( *callback) (unsigned char key, int x, int y)){
	if(keyboard_callback != NULL){
		return;
	}
	keyboard_callback = callback;
}

void assignMouseMotionCallback( void ( *callback) (int x, int y)){
	if(mouse_motion_callback != NULL){
		return;
	}
	mouse_motion_callback = callback;
}

void process_inputs(){
	int count, index;
	device_event *events, current;

	count = device_handler_poll_events(&events);

	if( count){
		printf("glut will dispatch %d events\n", count);
	}
	for( index = 0; index < count; index++){
		current = events[index];
		dispatch_input_event(current);
	}

	device_handler_destroy_events(events);
	process_key_events();
	process_cursor_events();
}

static void process_cursor_events(){
}

static void process_key_events(){
	int index, remapped_index;
	char key_ascii_code;

	for( index = 0; index < KEY_CNT; index++){
		if( buffered_keys[index]){
			remapped_index = index;
			/*
			printf("this key counts as pressed! %x\n", index);
			*/
			/* could add here the selection between classic GLUT and custom keymap */
			/* for now bad case MAPPING */
			if( 
				( remapped_index >= BTN_GAMEPAD && remapped_index <= BTN_THUMBR)
				||
				( remapped_index >= BTN_DPAD_UP && remapped_index <= BTN_DPAD_RIGHT)
			){
				printf("should remap\n");
				remapped_index = remap_joypad_to_keyboard( remapped_index);
			}

			key_ascii_code = get_ascii_code(remapped_index);

			/*
			printf("going to keyCB %d\n", key_ascii_code);
			*/

			/* NULL character would be zero */
			if( 0 < key_ascii_code){
				keyboard_callback( key_ascii_code, 0, 0);
			}
		}
	}
}

unsigned short remap_joypad_to_keyboard( unsigned short linux_key){
	switch( linux_key){
		case BTN_DPAD_DOWN:
			/* return KEY_DOWN; */
			return KEY_S;
		case BTN_DPAD_UP:
			/* return KEY_UP; */
			return KEY_W;
		case BTN_DPAD_LEFT:
			return KEY_A;
			/* return KEY_LEFT; */
		case BTN_DPAD_RIGHT:
			return KEY_D;
			/* return KEY_RIGHT; */

		case BTN_NORTH:
			return KEY_0;
		case BTN_WEST:
			return KEY_1;
		case BTN_SOUTH:
			return KEY_2;
		case BTN_EAST:
			return KEY_3;

		case BTN_TL:
			return KEY_4;
		case BTN_TL2:
			return KEY_5;
		case BTN_TR2:
			return KEY_6;
		case BTN_TR:
			return KEY_7;

		case BTN_START:
			return KEY_SPACE;
		case BTN_SELECT:
			return KEY_ESC;
		/*
		case BTN_THUMBL:
		case BTN_THUMBR:
		*/

		default:
			return 0;
	}
}