/* 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 the original source code of Lord Avalot d'Argent version 1.3.
 * Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
 */

#include "avalanche/avalanche.h"

#include "common/system.h"
#include "common/random.h"
#include "common/error.h"
#include "common/events.h"
#include "common/debug-channels.h"
#include "common/config-manager.h"
#include "common/textconsole.h"

#include "engines/util.h"



namespace Avalanche {

AvalancheEngine *AvalancheEngine::s_Engine = 0;

AvalancheEngine::AvalancheEngine(OSystem *syst, const AvalancheGameDescription *gd) : Engine(syst), _gameDescription(gd) {
	_system = syst;
	s_Engine = this;
	_console = new AvalancheConsole(this);

	_rnd = new Common::RandomSource("avalanche");
	_rnd->setSeed(42);     
}

AvalancheEngine::~AvalancheEngine() {
	delete _console;
	delete _rnd;

	delete _graphics;
	delete _parser;

	delete _avalot;
	delete _gyro;
	delete _enhanced;
	delete _logger;
	delete _pingo;
	delete _scrolls;
	delete _visa;
	delete _lucerna;
	delete _enid;
	delete _celer;
	delete _sequence;
	delete _timeout;
	delete _trip;
	delete _acci;
	delete _basher;
	delete _dropdown;
	delete _closing;
}

Common::ErrorCode AvalancheEngine::initialize() {
	_graphics = new Graphics(this);
	_parser = new Parser(this);

	_avalot = new Avalot(this);
	_gyro = new Gyro(this);
	_enhanced = new Enhanced(this);
	_logger = new Logger(this);
	_pingo = new Pingo(this);
	_scrolls = new Scrolls(this);
	_visa = new Visa(this);
	_lucerna = new Lucerna(this);
	_enid = new Enid(this);
	_celer = new Celer(this);
	_sequence = new Sequence(this);
	_timeout = new Timeout(this);
	_trip = new Trip(this);
	_acci = new Acci(this);
	_basher = new Basher(this);
	_dropdown = new Dropdown(this);
	_closing = new Closing(this);

	_graphics->init();

	_scrolls->init();
	_lucerna->init();
	_acci->init();
	_basher->init();
	

	return Common::kNoError;
}


GUI::Debugger *AvalancheEngine::getDebugger() {
	return _console;
}

Common::Platform AvalancheEngine::getPlatform() const {
	return _platform;
}



bool AvalancheEngine::hasFeature(EngineFeature f) const {
	return (f == kSupportsRTL) || (f == kSupportsLoadingDuringRuntime) || (f == kSupportsSavingDuringRuntime);
}

const char *AvalancheEngine::getCopyrightString() const {
	return "Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.";
}



void AvalancheEngine::updateEvents() {
	Common::Event event;

	while (_eventMan->pollEvent(event)) {
		switch (event.type) {
		case Common::EVENT_KEYDOWN:
			_avalot->handleKeyDown(event);
		}
	}
}

bool AvalancheEngine::getEvent(Common::Event &event) {
	return _eventMan->pollEvent(event);
}







// From Bootstrp:

const char AvalancheEngine::runcodes[2][3] = {"et", "Go"};



// The original ones were all commented out, so porbably there's no need
// of these two cursor functions at all. TODO: Remove later.
void AvalancheEngine::cursor_off() {
	warning("STUB: cursor_off()");
}

void AvalancheEngine::cursor_on() {
	warning("STUB: cursor_on()");
}

// Needed later.
void AvalancheEngine::quit() {
	cursor_on();
}

// Needed in dos_shell(). TODO: Remove later.
Common::String AvalancheEngine::command_com() {
	warning("STUB: command_com()");
	return ("STUB: command_com()");
}

// Needed for run_avalot()'s errors. TODO: Remove later.
void AvalancheEngine::explain(byte error) {
	warning("STUB: explain()");
}



//TODO: Remove these (b_flight) functions later ( https://github.com/tthurman/avalot/wiki/B-Flight )

void AvalancheEngine::b_flight() {   /*interrupt;*/
	_storage.skellern++;
}

void AvalancheEngine::bflight_on() {
	_storage.skellern = _reset_;
	// setintvec(0x1c, &b_flight);
}

void AvalancheEngine::bflight_off() {
	// setintvec(0x1c, old_1c);
}



Common::String AvalancheEngine::elm2str(elm how) {
	Common::String elm2str_result;
	switch (how) {
	case Normal:
	case Musical:
		elm2str_result = "jsb";
		break;
	case Regi:
		elm2str_result = "REGI";
		break;
	case Elmpoyten:
		elm2str_result = "ELMPOYTEN";
		break;
	}
	return elm2str_result;
}

void AvalancheEngine::run(Common::String what, bool with_jsb, bool with_bflight, elm how) {
	warning("STUB: run(%s)", what.c_str()); 
	// Probably there'll be no need of this function, as all *.AVX-es will become classes.
}

void AvalancheEngine::get_arguments() {
	// This function should mess around with command line arguments,
	// but I am not sure if there'll be use of these arguments at all...
	warning("STUB: get_arguments()"); 
}

void AvalancheEngine::get_slope() {
	// Same as get_arguments()
	warning("STUB: get_slope()");
}

void AvalancheEngine::call_menu() {
	warning("STUB: call_menu()");
}

void AvalancheEngine::run_the_demo() {
	warning("STUB: run_the_demo()");
}

void AvalancheEngine::dos_shell() {
	warning("STUB: dos_shell()");
}

// Getting used only in demo() / call_menu(). Going to be implemented at the same time with these.
bool AvalancheEngine::keypressed1() {	
	warning("STUB: keypressed1()");
	return false;
}

// Same as keypressed1().
void AvalancheEngine::flush_buffer() {
	warning("STUB: flush_buffer()");
}

// Same as keypressed1().
void AvalancheEngine::demo() {
	warning("STUB: demo()");
}



	
void AvalancheEngine::run_avalot() {
	bflight_on();

	_avalot->run(Common::String(runcodes[first_time]) + arguments);
	// TODO: Check if parameteres are ever used (probably not) and eventually remove them.
	// If there's an error initalizing avalot, i'll handle it in there, not here

	first_time = false;
}



Common::Error AvalancheEngine::run() {
	Common::ErrorCode err = initialize();
	if (err != Common::kNoError)
		return err;

		

	// From bootstrp:

	first_time = true;

	get_arguments();
	get_slope();

	zoomy = true; 
	// Don't call the menu by default. Might be modified later, if get_slope() gets implemented,
	// becouse zoomy's value is given there. Not sure yet what "zoomy" stands for.
	if (!zoomy)
		call_menu();    /* Not run when zoomy. */



	do {
		run_avalot();

		//if (dosexitcode != 77)  quit(); /* Didn't stop for us. */

		switch (_storage.operation) {
		case _runShootemup:
			run("seu.avx", _jsb, _bflight, Normal);
			break;
		case _runDosshell:
			dos_shell();
			break;
		case _runGhostroom:
			run("g-room.avx", _jsb, _no_bflight, Normal);
			break;
		case _runGolden:
			run("golden.avx", _jsb, _bflight, Musical);
			break;
		}

	} while (true);



	return Common::kNoError;
}

	

} // End of namespace Avalanche