/* 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.
 *
 */

/*
 * This code is based on Labyrinth of Time code with assistance of
 *
 * Copyright (c) 1993 Terra Nova Development
 * Copyright (c) 2004 The Wyrmkeep Entertainment Co.
 *
 */

#include "common/events.h"

#include "graphics/cursorman.h"

#include "lab/lab.h"

#include "lab/dispman.h"
#include "lab/eventman.h"
#include "lab/image.h"

namespace Lab {

static const byte mouseData[] = {
	1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
	1, 7, 1, 0, 0, 0, 0, 0, 0, 0,
	1, 7, 7, 1, 0, 0, 0, 0, 0, 0,
	1, 7, 7, 7, 1, 0, 0, 0, 0, 0,
	1, 7, 7, 7, 7, 1, 0, 0, 0, 0,
	1, 7, 7, 7, 7, 7, 1, 0, 0, 0,
	1, 7, 7, 7, 7, 7, 7, 1, 0, 0,
	1, 7, 7, 7, 7, 7, 7, 7, 1, 0,
	1, 7, 7, 7, 7, 7, 1, 1, 1, 1,
	1, 7, 7, 1, 7, 7, 1, 0, 0, 0,
	1, 7, 1, 0, 1, 7, 7, 1, 0, 0,
	1, 1, 0, 0, 1, 7, 7, 1, 0, 0,
	0, 0, 0, 0, 0, 1, 7, 7, 1, 0,
	0, 0, 0, 0, 0, 1, 7, 7, 1, 0,
	0, 0, 0, 0, 0, 0, 1, 1, 0, 0
};

#define MOUSE_WIDTH 10
#define MOUSE_HEIGHT 15

EventManager::EventManager(LabEngine *vm) : _vm(vm) {
	_leftClick = false;
	_rightClick = false;

	_lastButtonHit = nullptr;
	_screenButtonList = nullptr;
	_hitButton = nullptr;
	_mousePos = Common::Point(0, 0);
	_keyPressed = Common::KEYCODE_INVALID;
}

Button *EventManager::checkButtonHit(ButtonList *buttonList, Common::Point pos) {
	for (ButtonList::iterator buttonItr = buttonList->begin(); buttonItr != buttonList->end(); ++buttonItr) {
		Button *button = *buttonItr;
		Common::Rect buttonRect(button->_x, button->_y, button->_x + button->_image->_width - 1, button->_y + button->_image->_height - 1);

		if (buttonRect.contains(pos) && button->_isEnabled) {
			_hitButton = button;
			return button;
		}
	}

	return nullptr;
}

void EventManager::attachButtonList(ButtonList *buttonList) {
	if (_screenButtonList != buttonList)
		_lastButtonHit = nullptr;

	_screenButtonList = buttonList;
}

Button *EventManager::getButton(uint16 id) {
	for (ButtonList::iterator buttonItr = _screenButtonList->begin(); buttonItr != _screenButtonList->end(); ++buttonItr) {
		Button *button = *buttonItr;
		if (button->_buttonId == id)
			return button;
	}

	return nullptr;
}

void EventManager::updateMouse() {
	if (!_hitButton)
		return;

	_hitButton->_altImage->drawImage(_hitButton->_x, _hitButton->_y);
	for (int i = 0; i < 3; i++)
		_vm->waitTOF();
	_hitButton->_image->drawImage(_hitButton->_x, _hitButton->_y);

	_hitButton = nullptr;
	_vm->_graphics->screenUpdate();
}

void EventManager::initMouse() {
	CursorMan.pushCursor(mouseData, MOUSE_WIDTH, MOUSE_HEIGHT, 0, 0, 0);
	CursorMan.showMouse(false);

	setMousePos(Common::Point(_vm->_graphics->_screenWidth / 2, _vm->_graphics->_screenHeight / 2));
}

void EventManager::mouseShow() {
	CursorMan.showMouse(true);
}

void EventManager::mouseHide() {
	CursorMan.showMouse(false);
}

void EventManager::setMousePos(Common::Point pos) {
	if (_vm->_isHiRes)
		_vm->_system->warpMouse(pos.x, pos.y);
	else
		_vm->_system->warpMouse(pos.x * 2, pos.y);
}

void EventManager::processInput() {
	Common::Event event;
	Button *curButton = nullptr;

	while (_vm->_system->getEventManager()->pollEvent(event)) {
		switch (event.type) {
		case Common::EVENT_LBUTTONDOWN:
			if (_screenButtonList)
				curButton = checkButtonHit(_screenButtonList, _mousePos);

			if (curButton)
				_lastButtonHit = curButton;
			else
				_leftClick = true;
			break;
		case Common::EVENT_RBUTTONDOWN:
			_rightClick = true;
			break;
		case Common::EVENT_MOUSEMOVE:
			_mousePos = event.mouse;
			break;
		case Common::EVENT_KEYDOWN:
			switch (event.kbd.keycode) {
			case Common::KEYCODE_LEFTBRACKET:
				_vm->changeVolume(-1);
				break;
			case Common::KEYCODE_RIGHTBRACKET:
				_vm->changeVolume(1);
				break;
			case Common::KEYCODE_d:
				if (event.kbd.hasFlags(Common::KBD_CTRL)) {
					// Open debugger console
					_vm->_console->attach();
					continue;
				}
				// Intentional fall through
			default:
				_keyPressed = event.kbd;
				break;
			}
			break;
		case Common::EVENT_QUIT:
		case Common::EVENT_RTL:
		default:
			break;
		}
	}

	_vm->_system->copyRectToScreen(_vm->_graphics->_displayBuffer, _vm->_graphics->_screenWidth, 0, 0, _vm->_graphics->_screenWidth, _vm->_graphics->_screenHeight);
	_vm->_console->onFrame();
	_vm->_system->updateScreen();
}

Common::Point EventManager::updateAndGetMousePos() {
	processInput();

	return _mousePos;
}

void EventManager::simulateEvent() {
	// Simulate an event by setting an unused key
	_keyPressed = Common::KeyState(Common::KEYCODE_SEMICOLON);
}

} // End of namespace Lab