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

#include <readline/readline.h>

#include "disp.h"

void cli_init(void) {}

void
cli_display_calc(int x, int y)
{
	printf("%d + %d = ", x, y);
	fflush(stdout);
}

int
cli_read_input(void)
{
	char *txt = readline("");

	if ((!txt) || (txt[0] == '\0')) {
		return DISP_QUIT;
	}
	else if (txt[0] == 'q') {
		free(txt);
		return DISP_QUIT;
	}
#ifndef NDEBUG
	if ((*txt == 'r') || (*txt == 'g'))
		return DISP_RELOAD;
#endif

	int res = atoi(txt);
	free(txt);
	return res;
}

void
cli_display_res(bool ok, int ms)
{
	printf("%s\t%dms\n", ok ? "RIGHT" : "WRONG", ms);
}

void cli_destroy(void) {}

#ifndef NDEBUG
void *cli_pre_reload(void) {return NULL;}
void cli_post_reload(void *) {}
#endif

#ifdef NDEBUG
static struct disp __cli_disp = {
	.init = cli_init,
	.display_calc = cli_display_calc,
	.read_input = cli_read_input,
	.display_res = cli_display_res,
	.destroy = cli_destroy
};
struct disp *cli_disp = &__cli_disp;
#endif