#include "vxBoot/terminal.h"

#include <gint/display.h>
#include <gint/timer.h>

#include <string.h>
#include <stdlib.h>

/* internal symbols */
struct terminal terminal;

/* terminal_open(): Initialize and open the terminal */
int terminal_open(void)
{
	if (terminal.private.watermark == TERM_PRIVATE_WATERMARK)
		terminal_close();
	memset(&terminal, 0x00, sizeof(struct terminal));
	terminal.private.timer.id = -1;
	terminal.winsize.ws_xpixel = DWIDTH;
	terminal.winsize.ws_ypixel = DHEIGHT;
	terminal.winsize.ft_xpixel = FWIDTH + 1;
	terminal.winsize.ft_ypixel = FHEIGHT + 1;
	terminal.winsize.ws_col = DWIDTH / terminal.winsize.ft_xpixel;
	terminal.winsize.ws_row = DHEIGHT / terminal.winsize.ft_ypixel;
	terminal.buffer.size = terminal.winsize.ws_row
					* terminal.winsize.ws_col
					* TERM_RDBUFFER_NBLINE
					* sizeof(uint8_t);
	terminal.buffer.data = calloc(1, terminal.buffer.size);
	if (terminal.buffer.data == NULL) {
		terminal_close();
		return (-1);
	}
	terminal.private.timer.id = timer_configure(
		TIMER_ANY,
		250000,
		GINT_CALL(terminal_cursor_handler)
	);
	if (terminal.private.timer.id < 0) {
		terminal_close();
		return (-1);
	}
	terminal.private.color.bg = C_BLACK;
	terminal.private.color.fg = C_WHITE;
	terminal.private.watermark = TERM_PRIVATE_WATERMARK;
	return (0);
}