/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "common/scummsys.h"

/*
 * GPH: Device Specific Event Handling.
 */

#if defined(GPH_DEVICE)

#include "backends/events/gph/gph-events.h"
#include "backends/graphics/gph/gph-graphics.h"
#include "backends/platform/gph/gph-hw.h"

#include "common/util.h"
#include "common/events.h"
#include "common/translation.h"

#define JOY_DEADZONE 2200

#define JOY_XAXIS 0
#define JOY_YAXIS 1

/* Quick default button states for modifiers. */
int BUTTON_STATE_L                  =   false;

#if defined(CAANOO)

/* Caanoo: Main Joystick Button Mappings */
/*         The Caanoo has an analogue stick so no digital DPAD */
enum {
	/* Joystick Buttons */
	BUTTON_A            = 0,
	BUTTON_X            = 1,
	BUTTON_B            = 2,
	BUTTON_Y            = 3,
	BUTTON_L            = 4,
	BUTTON_R            = 5,
	BUTTON_HOME         = 6,    // Home
	BUTTON_HOLD         = 7,    // Hold (on Power)
	BUTTON_HELP         = 8,    // Help I
	BUTTON_HELP2        = 9,    // Help II
	BUTTON_CLICK        = 10    // Stick Click
};

enum {
	/* Unused Joystick Buttons on the Caanoo */
	BUTTON_VOLUP        = 51,
	BUTTON_VOLDOWN      = 52,
	BUTTON_UP           = 53,
	BUTTON_UPLEFT       = 54,
	BUTTON_LEFT         = 55,
	BUTTON_DOWNLEFT     = 56,
	BUTTON_DOWN         = 57,
	BUTTON_DOWNRIGHT    = 58,
	BUTTON_RIGHT        = 59,
	BUTTON_UPRIGHT      = 60,
	BUTTON_MENU         = 61,
	BUTTON_SELECT       = 62
};

#elif defined(GP2XWIZ)

/* Wiz: Main Joystick Mappings */
enum {
	/* DPAD */
	BUTTON_UP           = 0,
	BUTTON_UPLEFT       = 1,
	BUTTON_LEFT         = 2,
	BUTTON_DOWNLEFT     = 3,
	BUTTON_DOWN         = 4,
	BUTTON_DOWNRIGHT    = 5,
	BUTTON_RIGHT        = 6,
	BUTTON_UPRIGHT      = 7,
	/* Joystick Buttons */
	BUTTON_MENU         = 8,
	BUTTON_SELECT       = 9,
	BUTTON_L            = 10,
	BUTTON_R            = 11,
	BUTTON_A            = 12,
	BUTTON_B            = 13,
	BUTTON_X            = 14,
	BUTTON_Y            = 15,
	BUTTON_VOLUP        = 16,
	BUTTON_VOLDOWN      = 17
};

enum {
	/* Unused Joystick Buttons on the Wiz */
	BUTTON_HOME         = 51,
	BUTTON_HOLD         = 52,
	BUTTON_CLICK        = 53,
	BUTTON_HELP         = 54,
	BUTTON_HELP2        = 55
};

#elif defined(GP2X)

enum {
	/* DPAD/Stick */
	BUTTON_UP           = 0,
	BUTTON_UPLEFT       = 1,
	BUTTON_LEFT         = 2,
	BUTTON_DOWNLEFT     = 3,
	BUTTON_DOWN         = 4,
	BUTTON_DOWNRIGHT    = 5,
	BUTTON_RIGHT        = 6,
	BUTTON_UPRIGHT      = 7,
	/* Joystick Buttons */
	BUTTON_MENU         = 8,    // Start on F100 GP2X
	BUTTON_SELECT       = 9,
	BUTTON_L            = 10,
	BUTTON_R            = 11,
	BUTTON_A            = 12,
	BUTTON_B            = 13,
	BUTTON_X            = 14,
	BUTTON_Y            = 15,
	BUTTON_VOLUP        = 16,
	BUTTON_VOLDOWN      = 17,
	BUTTON_CLICK        = 18
};

enum {
	/* Unused Joystick Buttons on the GP2X */
	BUTTON_HOME         = 51,
	BUTTON_HOLD         = 52,
	BUTTON_HELP         = 53,
	BUTTON_HELP2        = 54
};

#endif

enum {
	/* Touchscreen TapMode */
	TAPMODE_LEFT        = 0,
	TAPMODE_RIGHT       = 1,
	TAPMODE_HOVER       = 2
};

GPHEventSource::GPHEventSource()
	: _buttonStateL(false) {
}

void GPHEventSource::moveStick() {
	bool stickBtn[32];

	memcpy(stickBtn, _stickBtn, sizeof(stickBtn));

	if ((stickBtn[0]) || (stickBtn[2]) || (stickBtn[4]) || (stickBtn[6]))
		stickBtn[1] = stickBtn[3] = stickBtn[5] = stickBtn[7] = 0;

	if ((stickBtn[1]) || (stickBtn[2]) || (stickBtn[3])) {
		if (_km.x_down_count != 2) {
			_km.x_vel = -1;
			_km.x_down_count = 1;
		} else
			_km.x_vel = -4;
	} else if ((stickBtn[5]) || (stickBtn[6]) || (stickBtn[7])) {
		if (_km.x_down_count != 2) {
			_km.x_vel = 1;
			_km.x_down_count = 1;
		} else
			_km.x_vel = 4;
	} else {
		_km.x_vel = 0;
		_km.x_down_count = 0;
	}

	if ((stickBtn[0]) || (stickBtn[1]) || (stickBtn[7])) {
		if (_km.y_down_count != 2) {
			_km.y_vel = -1;
			_km.y_down_count = 1;
		} else
			_km.y_vel = -4;
	} else if ((stickBtn[3]) || (stickBtn[4]) || (stickBtn[5])) {
		if (_km.y_down_count != 2) {
			_km.y_vel = 1;
			_km.y_down_count = 1;
		} else
			_km.y_vel = 4;
	} else {
		_km.y_vel = 0;
		_km.y_down_count = 0;
	}
}

/* Custom handleMouseButtonDown/handleMouseButtonUp to deal with 'Tap Mode' for the touchscreen */

bool GPHEventSource::handleMouseButtonDown(SDL_Event &ev, Common::Event &event) {
	if (ev.button.button == SDL_BUTTON_LEFT) {
		if (BUTTON_STATE_L == true) /* BUTTON_STATE_L = Left Trigger Held, force Right Click */
			event.type = Common::EVENT_RBUTTONDOWN;
		else if (GPH::tapmodeLevel == TAPMODE_LEFT) /* TAPMODE_LEFT = Left Click Tap Mode */
			event.type = Common::EVENT_LBUTTONDOWN;
		else if (GPH::tapmodeLevel == TAPMODE_RIGHT) /* TAPMODE_RIGHT = Right Click Tap Mode */
			event.type = Common::EVENT_RBUTTONDOWN;
		else if (GPH::tapmodeLevel == TAPMODE_HOVER) /* TAPMODE_HOVER = Hover (No Click) Tap Mode */
			event.type = Common::EVENT_MOUSEMOVE;
		else
			event.type = Common::EVENT_LBUTTONDOWN; /* For normal mice etc. */
	} else if (ev.button.button == SDL_BUTTON_RIGHT)
		event.type = Common::EVENT_RBUTTONDOWN;
#if defined(SDL_BUTTON_WHEELUP) && defined(SDL_BUTTON_WHEELDOWN)
	else if (ev.button.button == SDL_BUTTON_WHEELUP)
		event.type = Common::EVENT_WHEELUP;
	else if (ev.button.button == SDL_BUTTON_WHEELDOWN)
		event.type = Common::EVENT_WHEELDOWN;
#endif
#if defined(SDL_BUTTON_MIDDLE)
	else if (ev.button.button == SDL_BUTTON_MIDDLE)
		event.type = Common::EVENT_MBUTTONDOWN;
#endif
	else
		return false;

	processMouseEvent(event, ev.button.x, ev.button.y);

	return true;
}

bool GPHEventSource::handleMouseButtonUp(SDL_Event &ev, Common::Event &event) {
	if (ev.button.button == SDL_BUTTON_LEFT) {
		if (BUTTON_STATE_L == true) /* BUTTON_STATE_L = Left Trigger Held, force Right Click */
			event.type = Common::EVENT_RBUTTONUP;
		else if (GPH::tapmodeLevel == TAPMODE_LEFT) /* TAPMODE_LEFT = Left Click Tap Mode */
			event.type = Common::EVENT_LBUTTONUP;
		else if (GPH::tapmodeLevel == TAPMODE_RIGHT) /* TAPMODE_RIGHT = Right Click Tap Mode */
			event.type = Common::EVENT_RBUTTONUP;
		else if (GPH::tapmodeLevel == TAPMODE_HOVER) /* TAPMODE_HOVER = Hover (No Click) Tap Mode */
			event.type = Common::EVENT_MOUSEMOVE;
		else
			event.type = Common::EVENT_LBUTTONUP; /* For normal mice etc. */
	} else if (ev.button.button == SDL_BUTTON_RIGHT)
		event.type = Common::EVENT_RBUTTONUP;
#if defined(SDL_BUTTON_MIDDLE)
	else if (ev.button.button == SDL_BUTTON_MIDDLE)
		event.type = Common::EVENT_MBUTTONUP;
#endif
	else
		return false;

	processMouseEvent(event, ev.button.x, ev.button.y);

	return true;
}

/* Custom handleJoyButtonDown/handleJoyButtonUp to deal with the joystick buttons on GPH devices */

bool GPHEventSource::handleJoyButtonDown(SDL_Event &ev, Common::Event &event) {

	_stickBtn[ev.jbutton.button] = 1;
	event.kbd.flags = 0;

	switch (ev.jbutton.button) {
	case BUTTON_UP:
	case BUTTON_UPLEFT:
	case BUTTON_LEFT:
	case BUTTON_DOWNLEFT:
	case BUTTON_DOWN:
	case BUTTON_DOWNRIGHT:
	case BUTTON_RIGHT:
	case BUTTON_UPRIGHT:
		moveStick();
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x, _km.y);
		break;
	case BUTTON_B:
	case BUTTON_CLICK:
		event.type = Common::EVENT_LBUTTONDOWN;
		processMouseEvent(event, _km.x, _km.y);
		break;
	case BUTTON_X:
		event.type = Common::EVENT_RBUTTONDOWN;
		processMouseEvent(event, _km.x, _km.y);
		break;
	case BUTTON_L:
		BUTTON_STATE_L = true;
		break;
	case BUTTON_R:
		event.type = Common::EVENT_KEYDOWN;
		if (BUTTON_STATE_L == true) {
#ifdef ENABLE_VKEYBD
			event.kbd.keycode = Common::KEYCODE_F7;
			event.kbd.ascii = mapKey(SDLK_F7, ev.key.keysym.mod, 0);
#else
			event.kbd.keycode = Common::KEYCODE_0;
			event.kbd.ascii = mapKey(SDLK_0, ev.key.keysym.mod, 0);
#endif
		} else {
			event.kbd.keycode = Common::KEYCODE_RETURN;
			event.kbd.ascii = mapKey(SDLK_RETURN, ev.key.keysym.mod, 0);
		}
		break;
	case BUTTON_SELECT:
	case BUTTON_HOME:
		event.type = Common::EVENT_KEYDOWN;
		if (BUTTON_STATE_L == true) {
			event.type = Common::EVENT_QUIT;
		} else {
			event.kbd.keycode = Common::KEYCODE_ESCAPE;
			event.kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0);
		}
		break;
	case BUTTON_A:
		event.type = Common::EVENT_KEYDOWN;
		if (BUTTON_STATE_L == true) {
			event.type = Common::EVENT_PREDICTIVE_DIALOG;
		} else {
			event.kbd.keycode = Common::KEYCODE_PERIOD;
			event.kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0);
		}
		break;
	case BUTTON_Y:
		event.type = Common::EVENT_KEYDOWN;
		if (BUTTON_STATE_L == true) {
			GPH::ToggleTapMode();
			if (GPH::tapmodeLevel == TAPMODE_LEFT) {
				g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Left Click"));
			} else if (GPH::tapmodeLevel == TAPMODE_RIGHT) {
				g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Right Click"));
			} else if (GPH::tapmodeLevel == TAPMODE_HOVER) {
				g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Hover (No Click)"));
			}
		} else {
			event.kbd.keycode = Common::KEYCODE_SPACE;
			event.kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
		}
		break;
	case BUTTON_MENU:
	case BUTTON_HELP:
		event.type = Common::EVENT_KEYDOWN;
		if (BUTTON_STATE_L == true) {
			event.type = Common::EVENT_MAINMENU;
		} else {
			event.kbd.keycode = Common::KEYCODE_F5;
			event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
		}
		break;
	case BUTTON_VOLUP:
		WIZ_HW::mixerMoveVolume(2);
		if (WIZ_HW::volumeLevel == 100) {
			g_system->displayMessageOnOSD(_("Maximum Volume"));
		} else {
			g_system->displayMessageOnOSD(_("Increasing Volume"));
		}
		break;
	case BUTTON_VOLDOWN:
		WIZ_HW::mixerMoveVolume(1);
		if (WIZ_HW::volumeLevel == 0) {
			g_system->displayMessageOnOSD(_("Minimal Volume"));
		} else {
			g_system->displayMessageOnOSD(_("Decreasing Volume"));
		}
		break;
	case BUTTON_HOLD:
		event.type = Common::EVENT_QUIT;
		break;
	case BUTTON_HELP2:
		GPH::ToggleTapMode();
		if (GPH::tapmodeLevel == TAPMODE_LEFT) {
			g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Left Click"));
		} else if (GPH::tapmodeLevel == TAPMODE_RIGHT) {
			g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Right Click"));
		} else if (GPH::tapmodeLevel == TAPMODE_HOVER) {
			g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Hover (No Click)"));
		}
		break;
	}
	return true;
}

bool GPHEventSource::handleJoyButtonUp(SDL_Event &ev, Common::Event &event) {

	_stickBtn[ev.jbutton.button] = 0;
	event.kbd.flags = 0;

	switch (ev.jbutton.button) {
	case BUTTON_UP:
	case BUTTON_UPLEFT:
	case BUTTON_LEFT:
	case BUTTON_DOWNLEFT:
	case BUTTON_DOWN:
	case BUTTON_DOWNRIGHT:
	case BUTTON_RIGHT:
	case BUTTON_UPRIGHT:
		moveStick();
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x, _km.y);
		break;
	case BUTTON_B:
	case BUTTON_CLICK:
		event.type = Common::EVENT_LBUTTONUP;
		processMouseEvent(event, _km.x, _km.y);
		break;
	case BUTTON_X:
		event.type = Common::EVENT_RBUTTONUP;
		processMouseEvent(event, _km.x, _km.y);
		break;
	case BUTTON_L:
		BUTTON_STATE_L = false;
		break;
	case BUTTON_SELECT:
	case BUTTON_HOME:
		event.type = Common::EVENT_KEYUP;
		event.kbd.keycode = Common::KEYCODE_ESCAPE;
		event.kbd.ascii = mapKey(SDLK_ESCAPE, ev.key.keysym.mod, 0);
		break;
	case BUTTON_A:
		event.type = Common::EVENT_KEYUP;
		event.kbd.keycode = Common::KEYCODE_PERIOD;
		event.kbd.ascii = mapKey(SDLK_PERIOD, ev.key.keysym.mod, 0);
		break;
	case BUTTON_Y:
		event.type = Common::EVENT_KEYUP;
		event.kbd.keycode = Common::KEYCODE_SPACE;
		event.kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
		break;
	case BUTTON_MENU:
	case BUTTON_HELP:
		event.type = Common::EVENT_KEYUP;
		if (BUTTON_STATE_L == true) {
			event.type = Common::EVENT_MAINMENU;
		} else {
			event.kbd.keycode = Common::KEYCODE_F5;
			event.kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
		}
		break;
	case BUTTON_R:
		event.type = Common::EVENT_KEYUP;
		if (BUTTON_STATE_L == true) {
#ifdef ENABLE_VKEYBD
			event.kbd.keycode = Common::KEYCODE_F7;
			event.kbd.ascii = mapKey(SDLK_F7, ev.key.keysym.mod, 0);
#else
			event.kbd.keycode = Common::KEYCODE_0;
			event.kbd.ascii = mapKey(SDLK_0, ev.key.keysym.mod, 0);
#endif
		} else {
			event.kbd.keycode = Common::KEYCODE_RETURN;
			event.kbd.ascii = mapKey(SDLK_RETURN, ev.key.keysym.mod, 0);
		}
		break;
	case BUTTON_VOLUP:
		break;
	case BUTTON_VOLDOWN:
		break;
	case BUTTON_HOLD:
		break;
	case BUTTON_HELP2:
		break;
	}
	return true;
}

bool GPHEventSource::remapKey(SDL_Event &ev, Common::Event &event) {
	return false;
}

#endif
