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

#include "main.h"
#include "list.h"
#include "myTimer.h"

#include "interface.h"
#include "hotKey.h"

typedef struct hotKey_struct
{
	SDLKey key;
	bool_t active;
	void (*handler)();
} hotKey_t;

static list_t *listHotKey;
static my_time_t lastActive;

static hotKey_t* newHotKey(SDLKey key, void (*handler)())
{
	hotKey_t *new;

	new = malloc( sizeof(hotKey_t) );
	new->key = key;
	new->active = TRUE;
	new->handler = handler;

	return new;
}

static void destroyHotKey(hotKey_t *hotkey)
{
	free(hotkey);
}

static hotKey_t* findHotkey(SDLKey key)
{
	int i;

	for( i = 0 ; i < listHotKey->count ; i++ )
	{
		hotKey_t *this;

		this = (hotKey_t *)listHotKey->list[i];

		if( this->key == key )
		{
			return this;
		}
	}

	return NULL;
}

void initHotKey()
{
	listHotKey = newList();
	lastActive = getMyTime();
}

void registerHotKey(SDLKey key, void (*handler)())
{
	hotKey_t *hotkey;

	if( findHotkey(key) != NULL )
	{
		assert( ! "Conflict with register key");
	}

	hotkey = newHotKey(key, handler);
	addList(listHotKey, hotkey);
}

void unregisterHotKey(SDLKey key)
{
	hotKey_t *hotkey;
	int index;

	hotkey = findHotkey(key);

	if( hotkey == NULL )
	{
		assert( ! "This hotkey not register");
	}

	index = searchListItem(listHotKey, hotkey);
	assert( index != -1 );
	delListItem(listHotKey, index, destroyHotKey);
}

void enableHotKey(SDLKey key)
{
	hotKey_t *hotkey;

	hotkey = findHotkey(key);

	if( hotkey == NULL )
	{
		assert( ! "This hotkey not register");
	}

	lastActive = getMyTime();
	hotkey->active = TRUE;
}

void disableHotKey(SDLKey key)
{
	hotKey_t *hotkey;

	hotkey = findHotkey(key);

	if( hotkey == NULL )
	{
		assert( ! "This hotkey not register");
	}

	lastActive = getMyTime();
	hotkey->active = FALSE;
}

void eventHotKey()
{
	my_time_t currentTime;
	Uint8 *mapa;
	int i;

	currentTime = getMyTime();

	if( currentTime - lastActive < HOTKEY_ACTIVE_INTERVAL )
	{
		return;
	}

	mapa = SDL_GetKeyState(NULL);

	for( i = 0 ; i < listHotKey->count ; i++ )
	{
		hotKey_t *this;

		this = (hotKey_t *)listHotKey->list[i];

		if( mapa[this->key] == SDL_PRESSED && this->active == TRUE )
		{
			lastActive = getMyTime();
			//printf("hotKey = %d\n", this->key);
			this->handler();
		}
	}
}

void quitHotKey()
{
	destroyListItem(listHotKey, destroyHotKey);
}