/*
*	[Guida NCURSES](https://tldp.org/HOWTO/NCURSES-Programming-HOWTO/intro.html)
*	Product Manager
*
*	Controllare se file esiste
*	Listare prodotti con prezzo da file
*	Aggiungere prodotto con prezzo a file
*	Listare copie vendute di prodotto da file
*	Aggiungere copie venduto di prodotto a file
*	Cambiare nome dei file con interagisce
*	Calcolare la somma delle entrate dati i file
*/

#include <stdio.h>
#include <stdlib.h>
#include <ncurses.h>

// Prototipi
int runMainMenu();
WINDOW *create_newwin(int height, int width, int starty, int startx);
void destroy_win(WINDOW *local_win);
void print_menu(WINDOW *menu_win, int highlight);
int getCount();
void changeFile();
int checkIfFileExists();

// Costanti
char productPricesFileLocation[64]="./productPricesSetting.txt";
char countFileLocation[64]="./count.txt";
FILE *productPrices;
FILE *count;

char *mainMenu[] = {
	"Segna vendita",
	"Vedi vendite",
	"Vedi prodotti",
	"Gestisci prodotti",
	"Opzioni",
	"Exit"
};
int n_mainMenu = sizeof(mainMenu) / sizeof(char *);





// Funzioni
int main(){
	initscr();
	noecho();
	curs_set(0);
	raw();
	refresh();
	
	int running = 0;
	while(running != 6){
		running = runMainMenu();
	}

	endwin();
	return 0;
}



int runMainMenu(){
	WINDOW *mainWin;
	int startx, starty, width, height;
	height = LINES / 2;
	width = COLS / 2;
	starty = 0;
	startx = 0;
	mainWin = create_newwin(height, width, starty, startx);

	int highlight = 1;
	int choice = 0;
	int c;

	keypad(mainWin, TRUE);
	mvwprintw(mainWin, 1, 2, "Usa le freccette ed invio per scegliere un'opzione!");
	refresh();
	print_menu(mainWin, highlight);
	while(1)
	{	c = wgetch(mainWin);
		switch(c)
		{	case KEY_UP:
				if(highlight == 1)
					highlight = n_mainMenu;
				else
					--highlight;
				break;
			case KEY_DOWN:
				if(highlight == n_mainMenu)
					highlight = 1;
				else
					++highlight;
				break;
			case 10:
				choice = highlight;
				break;
			default:
				mvwprintw(mainWin, height - 2, 2, "Hai premuto il tasto '%c'", c, c);
				refresh();
				break;
		}
		print_menu(mainWin, highlight);
		if(choice != 0)	/* User did a choice come out of the infinite loop */
			break;
	}
	mvprintw( LINES - 1 , 0, "Hai premuto il tasto %s\n . . .", mainMenu[choice - 1]);
	clrtoeol();
	refresh();
	destroy_win(mainWin);

	return choice;
}


WINDOW *create_newwin(int height, int width, int starty, int startx)
{	WINDOW *local_win;

	local_win = newwin(height, width, starty, startx);
	box(local_win, 0 , 0);
	wrefresh(local_win);

	return local_win;
}

void destroy_win(WINDOW *local_win)
{
	wborder(local_win, ' ', ' ', ' ',' ',' ',' ',' ',' ');
	wrefresh(local_win);
	delwin(local_win);
}

void print_menu(WINDOW *menu_win, int highlight)
{
	int x, y, i;

	x = 3;
	y = 3;
	box(menu_win, 0, 0);
	for(i = 0; i < n_mainMenu; ++i)
	{	if(highlight == i + 1) /* High light the present choice */
		{	wattron(menu_win, A_REVERSE);
			mvwprintw(menu_win, y, x, "%s", mainMenu[i]);
			wattroff(menu_win, A_REVERSE);
		}
		else
			mvwprintw(menu_win, y, x, "%s", mainMenu[i]);
		++y;
	}
	wrefresh(menu_win);
}



int checkIfFileExists(){

}

void changeFile(){

}

int getCount(){

}