#define B15F_CLI_DEBUG

#include <stdio.h>
#include <ncurses.h> // sudo apt-get install libncurses5-dev
#include <vector>
#include <string>
#include <iostream>
#include <signal.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <signal.h>
#include <future>
#include <thread>
#include <chrono>
#include "drv/b15f.h"
#include "ui/ui.h"
#include "ui/view_selection.h"
#include "ui/view_info.h"
#include "ui/view_monitor.h"
#include "ui/view_promt.h"

// global error message
std::string ERR_MSG;

volatile int win_changed_cooldown = 0;
volatile bool t_refresh_active = false;

void signal_handler(int signal)
{
	if(signal == SIGWINCH)
	{
		win_changed_cooldown = 10; // 100ms
		
		if (!t_refresh_active)
		{
			if(t_refresh.joinable())
				t_refresh.join();
			t_refresh_active = true;
			t_refresh = std::thread([](){
				
				while(win_changed_cooldown--)
					std::this_thread::sleep_for(std::chrono::milliseconds(10));
					
				t_refresh_active = false;
				
				if(win_stack.size())
					win_stack.back()->repaint();
					
			});
		}
		
	}
	else if(signal == SIGINT)
	{
		cleanup();
		std::cout << "SIGINT - Abbruch." << std::endl;
		if(ERR_MSG.length())
			std::cout << "ERR_MSG: " << ERR_MSG << std::endl;
		exit(EXIT_FAILURE);
	}
}

void abort_handler(std::exception& ex)
{
	ViewInfo* view = new ViewInfo();
	view->setTitle("Fehler");
	std::string msg(ex.what());
	msg += "\n\nBeende in 5 Sekunden.";
	view->setText(msg.c_str());
	view->setLabelClose("");
	view->repaint();
	
	std::this_thread::sleep_for(std::chrono::milliseconds(5000));
	
	cleanup();
	std::cerr << std::endl << "*** EXCEPTION ***" << std::endl << ex.what() << std::endl;
	exit(EXIT_FAILURE);
}

void init()
{
	// init b15 driver
	B15F::getInstance();
#ifndef B15F_CLI_DEBUG
	std::cout << std::endl << "Starte in 3s ..." << std::endl;
	sleep(3);
#endif
	B15F::setAbortHandler(&abort_handler);
	
	// init all ncurses stuff
	initscr();
	start_color();
	curs_set(0); // 0: invisible, 1: normal, 2: very visible
	clear();
	noecho();
	cbreak();  // Line buffering disabled. pass on everything
	mousemask(ALL_MOUSE_EVENTS, NULL);
	
	// connect signals to handler
	signal(SIGWINCH, signal_handler);	
	signal(SIGINT, signal_handler);
	
	// set view context
	View::setWinContext(newwin(25, 85, 0, 0));
}


int main()
{
	init();
	
	int exit_code = EXIT_SUCCESS;
	
	show_main(0);
	
	cleanup();
	
	return exit_code;
}