/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#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

#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
};

#else

/* Main Joystick Button Mappings */
enum {
	/* Joystick Buttons */
	BUTTON_A            = 0,
	BUTTON_B            = 1,
	BUTTON_X            = 2,
	BUTTON_Y            = 3,
	BUTTON_L            = 4,
	BUTTON_R            = 5,
	BUTTON_SELECT       = 6,
	BUTTON_MENU         = 7,
	BUTTON_CLICK        = 8    // Stick Click
};

enum {
	/* Unused Joystick Buttons */
	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_HOME         = 61,    // Home
	BUTTON_HOLD         = 62,    // Hold (on Power)
	BUTTON_HELP         = 63,    // Help I
	BUTTON_HELP2        = 64     // Help II
};

#endif

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

GPHEventSource::GPHEventSource()
	: _buttonStateL(false),
	  _tapmodeLevel(TAPMODE_LEFT) {
}

void GPHEventSource::ToggleTapMode() {
	if (_tapmodeLevel == TAPMODE_LEFT) {
		_tapmodeLevel = TAPMODE_RIGHT;
	} else if (_tapmodeLevel == TAPMODE_RIGHT) {
		_tapmodeLevel = TAPMODE_HOVER;
	} else if (_tapmodeLevel == TAPMODE_HOVER) {
		_tapmodeLevel = TAPMODE_LEFT;
	} else {
		_tapmodeLevel = TAPMODE_LEFT;
	}
}

/* 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)
		return SdlEventSource::handleMouseButtonDown(ev, event);

	if (_buttonStateL == true) /* _buttonStateL = Left Trigger Held, force Right Click */
		event.type = Common::EVENT_RBUTTONDOWN;
	else if (_tapmodeLevel == TAPMODE_LEFT) /* TAPMODE_LEFT = Left Click Tap Mode */
		event.type = Common::EVENT_LBUTTONDOWN;
	else if (_tapmodeLevel == TAPMODE_RIGHT) /* TAPMODE_RIGHT = Right Click Tap Mode */
		event.type = Common::EVENT_RBUTTONDOWN;
	else if (_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. */


	// update KbdMouse
	_km.x = ev.button.x * MULTIPLIER;
	_km.y = ev.button.y * MULTIPLIER;

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

bool GPHEventSource::handleMouseButtonUp(SDL_Event &ev, Common::Event &event) {
	if (ev.button.button != SDL_BUTTON_LEFT)
		return SdlEventSource::handleMouseButtonUp(ev, event);

	if (_buttonStateL == true) /* _buttonStateL = Left Trigger Held, force Right Click */
		event.type = Common::EVENT_RBUTTONUP;
	else if (_tapmodeLevel == TAPMODE_LEFT) /* TAPMODE_LEFT = Left Click Tap Mode */
		event.type = Common::EVENT_LBUTTONUP;
	else if (_tapmodeLevel == TAPMODE_RIGHT) /* TAPMODE_RIGHT = Right Click Tap Mode */
		event.type = Common::EVENT_RBUTTONUP;
	else if (_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. */


	// update KbdMouse
	_km.x = ev.button.x * MULTIPLIER;
	_km.y = ev.button.y * MULTIPLIER;

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

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

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

	event.kbd.flags = 0;

	switch (ev.jbutton.button) {
	case BUTTON_UP:
		if (_km.y_down_count != 2) {
			_km.y_vel = -1 * MULTIPLIER;
			_km.y_down_count = 1;
		} else {
			_km.y_vel = -4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_DOWN:
		if (_km.y_down_count != 2) {
			_km.y_vel = 1 * MULTIPLIER;
			_km.y_down_count = 1;
		} else {
			_km.y_vel = 4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_LEFT:
		if (_km.x_down_count != 2) {
			_km.x_vel = -1 * MULTIPLIER;
			_km.x_down_count = 1;
		} else {
			_km.x_vel = -4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_RIGHT:
		if (_km.x_down_count != 3) {
			_km.x_vel = 1 * MULTIPLIER;
			_km.x_down_count = 1;
		} else {
			_km.x_vel = 4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_UPLEFT:
		if (_km.x_down_count != 2) {
			_km.x_vel = -1 * MULTIPLIER;
			_km.x_down_count = 1;
		} else {
				_km.x_vel = -4 * MULTIPLIER;
		}
		if (_km.y_down_count != 2) {
			_km.y_vel = -1 * MULTIPLIER;
			_km.y_down_count = 1;
		} else {
			_km.y_vel = -4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_UPRIGHT:
		if (_km.x_down_count != 2) {
			_km.x_vel = 1 * MULTIPLIER;
			_km.x_down_count = 1;
		} else {
			_km.x_vel = 4 * MULTIPLIER;
		}
		if (_km.y_down_count != 2) {
			_km.y_vel = -1 * MULTIPLIER;
			_km.y_down_count = 1;
		} else {
			_km.y_vel = -4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_DOWNLEFT:
		if (_km.x_down_count != 2) {
			_km.x_vel = -1 * MULTIPLIER;
			_km.x_down_count = 1;
		} else {
			_km.x_vel = -4 * MULTIPLIER;
		}
		if (_km.y_down_count != 2) {
			_km.y_vel = 1 * MULTIPLIER;
			_km.y_down_count = 1;
		} else {
			_km.y_vel = 4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_DOWNRIGHT:
		if (_km.x_down_count != 2) {
			_km.x_vel = 1 * MULTIPLIER;
			_km.x_down_count = 1;
		} else {
			_km.x_vel = 4 * MULTIPLIER;
		}
		if (_km.y_down_count != 2) {
			_km.y_vel = 1 * MULTIPLIER;
			_km.y_down_count = 1;
		} else {
			_km.y_vel = 4 * MULTIPLIER;
		}
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_B:
	case BUTTON_CLICK:
		event.type = Common::EVENT_LBUTTONDOWN;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_X:
		event.type = Common::EVENT_RBUTTONDOWN;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_L:
		_buttonStateL = true;
		break;
	case BUTTON_R:
		event.type = Common::EVENT_KEYDOWN;
		if (_buttonStateL == true) {
			event.type = Common::EVENT_VIRTUAL_KEYBOARD;
		} 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 (_buttonStateL == 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 (_buttonStateL == 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 (_buttonStateL == true) {
			ToggleTapMode();
			if (_tapmodeLevel == TAPMODE_LEFT) {
				g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Left Click"));
			} else if (_tapmodeLevel == TAPMODE_RIGHT) {
				g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Right Click"));
			} else if (_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 (_buttonStateL == 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:
		ToggleTapMode();
		if (_tapmodeLevel == TAPMODE_LEFT) {
			g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Left Click"));
		} else if (_tapmodeLevel == TAPMODE_RIGHT) {
			g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Right Click"));
		} else if (_tapmodeLevel == TAPMODE_HOVER) {
			g_system->displayMessageOnOSD(_("Touchscreen 'Tap Mode' - Hover (No Click)"));
		}
		break;
	}
	return true;
}

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

	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:
		_km.y_vel = 0;
		_km.y_down_count = 0;
		_km.x_vel = 0;
		_km.x_down_count = 0;
		event.type = Common::EVENT_MOUSEMOVE;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_B:
	case BUTTON_CLICK:
		event.type = Common::EVENT_LBUTTONUP;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_X:
		event.type = Common::EVENT_RBUTTONUP;
		processMouseEvent(event, _km.x / MULTIPLIER, _km.y / MULTIPLIER);
		break;
	case BUTTON_L:
		_buttonStateL = 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 (_buttonStateL == 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 (_buttonStateL == true) {
			event.kbd.keycode = Common::KEYCODE_F7;
			event.kbd.ascii = mapKey(SDLK_F7, ev.key.keysym.mod, 0);
		} 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
