/**

 * $Id:  $

 *

 * Handles hotkeys for pause/continue, save states, quit, etc

 *

 * Copyright (c) 2009 wahrhaft

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

#include <assert.h>

#include <glib.h>

#include <sys/stat.h>

#include <stdint.h>

#include <stdlib.h>

#include "lxdream.h"

#include "dreamcast.h"

#include "display.h"

#include "hotkeys.h"

#include "gui.h"

#include "config.h"

static void hotkey_resume_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown );

static void hotkey_stop_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown );

static void hotkey_reset_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown );

static void hotkey_exit_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown );

static void hotkey_state_select_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown );

static void hotkey_state_save_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown );

static void hotkey_state_load_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown );

static char *set_current_state_filename(int filenum);

static char *current_save_state;

struct lxdream_config_entry hotkeys_config[] = {

        {"resume", N_("Resume emulation"), CONFIG_TYPE_KEY},

        {"stop", N_("Stop emulation"), CONFIG_TYPE_KEY},

        {"reset", N_("Reset emulator"), CONFIG_TYPE_KEY},

        {"exit", N_("Exit emulator"), CONFIG_TYPE_KEY},

        {"save", N_("Save current quick save"), CONFIG_TYPE_KEY},

        {"load", N_("Load current quick save"), CONFIG_TYPE_KEY},

        {"state1", N_("Select quick save state 1"), CONFIG_TYPE_KEY},

        {"state2", N_("Select quick save state 2"), CONFIG_TYPE_KEY},

        {"state3", N_("Select quick save state 3"), CONFIG_TYPE_KEY},

        {"state4", N_("Select quick save state 4"), CONFIG_TYPE_KEY},

        {"state5", N_("Select quick save state 5"), CONFIG_TYPE_KEY},

        {"state6", N_("Select quick save state 6"), CONFIG_TYPE_KEY},

        {"state7", N_("Select quick save state 7"), CONFIG_TYPE_KEY},

        {"state8", N_("Select quick save state 8"), CONFIG_TYPE_KEY},

        {"state9", N_("Select quick save state 9"), CONFIG_TYPE_KEY},

        {NULL, CONFIG_TYPE_NONE}

};

void hotkeys_init() {

    char *home = getenv("HOME");

    char *save_path = g_strdup_printf("%s/.lxdream", home);

    mkdir(save_path, S_IRWXU);

    g_free(save_path);

    set_current_state_filename(1);

    hotkeys_register_keys();

}

void hotkeys_register_keys()

{

    input_register_key(hotkeys_config[0].value, &hotkey_resume_callback, NULL, 0);

    input_register_key(hotkeys_config[1].value, &hotkey_stop_callback, NULL, 0);

    input_register_key(hotkeys_config[2].value, &hotkey_reset_callback, NULL, 0);

    input_register_key(hotkeys_config[3].value, &hotkey_exit_callback, NULL, 0);

    input_register_key(hotkeys_config[4].value, &hotkey_state_save_callback, NULL, 0);

    input_register_key(hotkeys_config[5].value, &hotkey_state_load_callback, NULL, 0);

    for (int i = 0; i < 9; i++)

    {

        input_register_key(hotkeys_config[6 + i].value, &hotkey_state_select_callback, NULL, i);

    }

}

void hotkeys_unregister_keys()

{

    input_unregister_key(hotkeys_config[0].value, &hotkey_resume_callback, NULL, 0);

    input_unregister_key(hotkeys_config[1].value, &hotkey_stop_callback, NULL, 0);

    input_unregister_key(hotkeys_config[2].value, &hotkey_reset_callback, NULL, 0);

    input_unregister_key(hotkeys_config[3].value, &hotkey_exit_callback, NULL, 0);

    input_unregister_key(hotkeys_config[4].value, &hotkey_state_save_callback, NULL, 0);

    input_unregister_key(hotkeys_config[5].value, &hotkey_state_load_callback, NULL, 0);

    for (int i = 0; i < 9; i++)

    {

        input_unregister_key(hotkeys_config[6 + i].value, &hotkey_state_select_callback, NULL, i);

    }

}

lxdream_config_entry_t hotkeys_get_config()

{

    return hotkeys_config;

}

static void hotkey_resume_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown )

{

    if (isKeyDown && !dreamcast_is_running() ) {

        gui_do_later(dreamcast_run);

    }

}

static void hotkey_stop_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown )

{

    if (isKeyDown && dreamcast_is_running() ) {

        gui_do_later(dreamcast_stop);

    }

}

static void hotkey_reset_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown )

{

    if (isKeyDown) {

        dreamcast_reset();

    }

}

static void hotkey_exit_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown )

{

    if (isKeyDown) {

        dreamcast_shutdown();

    }

    exit(0);

}

static void hotkey_state_select_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown )

{

    if (isKeyDown) {

        INFO("state select callback called (%d)", value);

        assert(value > 0 && value <= 9);

        set_current_state_filename(value);

    }

}

static void hotkey_state_save_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown )

{

    if (isKeyDown) {

        if (current_save_state != NULL)

            dreamcast_save_state(current_save_state);

    }

}

static void hotkey_state_load_callback( void *mdev, uint32_t value, uint32_t pressure, gboolean isKeyDown )

{

    if (isKeyDown) {

        if (current_save_state != NULL)

            dreamcast_load_state(current_save_state);

    }

}

static char *set_current_state_filename(int filenum)

{

    char *home = getenv("HOME");

    if (current_save_state != NULL)

        g_free(current_save_state);

    current_save_state = g_strdup_printf("%s/.lxdream/quicksave%d.dst", home, filenum);

}