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// Includes, namespace and prototypes
#include "template.h"
#include "ta_pointer.h"
#include "ta_oops.h"
#include "ta_display.h"
#include "the_player.h"
#include "the_globals.h"
#include "game_functions.h"
#include "ta_debug_console.h"

using namespace AGK;
app App;

/////////////////////////////////////////
// CONSTANTS ////////////////////////////
/////////////////////////////////////////

// game states
#define _AS_DISPLAY_INIT_	1
#define _AS_MAIN_INIT_		2
#define _AS_MAIN_PLAY_		3
#define _AS_MAIN_DONE_		4
#define _AS_BAD_STATE_		5

// indicate whether using DebugConsole
#define _USE_DEBUG_CONSOLE_	false

/////////////////////////////////////////
// PROTOTYPES ///////////////////////////
/////////////////////////////////////////

#ifdef IDE_ANDROID
extern void exit(int);
#endif

/////////////////////////////////////////
// CLASS IMPLEMENTATION /////////////////
/////////////////////////////////////////

// Begin app, called once at the start
void app::Begin( void )
{
	// initialise the debug console
	if (_USE_DEBUG_CONSOLE_) TADebugConsole::init_console("HelpYeeYeeGetHome","com.triassicassociates.helpyeeyeegethome.syslog");

	// assume okay for now
	did_end = false;
	app_state = _AS_DISPLAY_INIT_;
	app_err_msg = "";

	// set the platform data
	TADisplay::setPlatformInfo(false,false);

	// do startup function
	if (initialiseTheApp(WINDOW_TITLE)) hadAnAppError("Failed to initialise properly:");
}

// Main loop, called every frame
void app::Loop ( void )
{
	// check for ended
	if (app::did_end) return;

	// get seconds per frame and frames per second
	g_frametime = agk::GetFrameTime();
	g_fps = agk::ScreenFPS();

	// figure out the factor to multiply speeds by
	g_fixspeed = g_frametime / g_targettime;

	TADisplay::printAGKmessage("\nFPS:%0.1f",g_fps);

	// process based on state
	switch (app_state)
	{
		case _AS_MAIN_PLAY_:
			//  handle the main processing stuff
			switch (mainProcessingLoop())
			{
				case 0:
					// do the physics, done this way so that we can control
					// pausing and restarting
					the_player::step_physics(g_fixspeed);
					break;
				case 1:
					// player pressed 'Exit'
					// set new state
					app_state = _AS_MAIN_DONE_;
					break;
				case 2:
					// an error occurred while starting a game
					hadAnAppError("Game did not start properly:");
					break;
				case 3:
					// an error occured while initialising options
					hadAnAppError("Failed to initialise options:");
					break;
			}
			break;
		case _AS_MAIN_DONE_:
			// we want to make sure everything is cleared away
			endTheGame();

			// close down
			closeThisApp();

			// done, we want to make sure we skip the Sync() call
			return;
		case _AS_BAD_STATE_:
			// display message and done
			inBadState();
			break;
		case _AS_MAIN_INIT_:
			// do initialisation
			if (initialiseTheGame()) hadAnAppError("Failed to initialise properly:");
			else app_state = _AS_MAIN_PLAY_;
			break;
		case _AS_DISPLAY_INIT_:
			// we want to make sure that the display syncs right now
			// so that our splash screen displays and so that
			// our display is correctly 'formatted'
			// before we start initialisation
			agk::Sync();
			agk::Sync();

			// start actual game initialisation in the next cycle
			app_state = _AS_MAIN_INIT_;
			break;
	}

	// sync display
	agk::Sync();
}

// Called when the app ends
void app::End ( void )
{
	// clean up, close debug output
	TADebugConsole::close_console();
}

void app::closeThisApp(bool noforce/*=true*/)
{
	// if in debug mode we want to leave the consoles displayed
	if (noforce&&_USE_DEBUG_CONSOLE_)
	{
		// do a couple of sync calls to clear inputs
		agk::Sync();
		agk::Sync();

		// indicate 'error', but it won't be visible
		hadAnAppError("Shutdown functions done.\nWaiting so that events can be\nviewed in DebugConsole.");
		return;
	}

	// indicate done
	app::did_end = true;

	// completely exit the app
#ifdef AGKWINDOWS
	PostQuitMessage(0);
#endif
#ifdef AGKIOS
	// forcing a quit in iOS is against recommended guidelines - use HOME button
	// the exit button is disabled on AGKIOS builds
	// but if you want to do so, this is the code
	agk::MasterReset();
	exit(0);
#endif
#ifdef IDE_ANDROID
	// similar to iOS, an exit button should not be done
	// but if you want to do so, this is the code
	agk::MasterReset();
	exit(0);
#endif
#ifdef IDE_MAC
	glfwCloseWindow();
#endif
}

void app::checkForExit()
{
	// if pointer pressed, we are done
	if (TAPointer::gotPress()) closeThisApp(false);
}

void app::hadAnAppError(const char* errmsg)
{
	// save the message
	app_err_msg = "\n\n\n";
	app_err_msg += errmsg;
	app_err_msg += "\n\n";
	app_err_msg += ta_oops::get_the_oops();
	app_err_msg += "\n\n\nTouch anywhere to exit";

	// save the state as bad
	app_state = _AS_BAD_STATE_;

	// show a message
	agk::Print(app_err_msg.c_str());
}

void app::inBadState()
{
	// check for exit
	app::checkForExit();

	// show a message
	agk::Print(app_err_msg.c_str());
}