#include <stdio.h>
#include <unistd.h>

#include <sys/stat.h>
#include <skalibs/sgetopt.h>
#include <skalibs/stralloc.h>
#include <skalibs/env.h>
#include <skalibs/bytestr.h>
#include <skalibs/strerr.h>
#include <skalibs/exec.h>

#include "config.h"

#define USAGE "mvwt [-c cachedir] id"
#define WALLTAKER_URL "walltaker.joi.how"

int
main(int argc, char *const *argv)
{
	int opt;
	subgetopt l = SUBGETOPT_ZERO;
	stralloc envmod = STRALLOC_ZERO;

	PROG = "mvwt";
	const char *cachedir = CACHE_DIR;

	while ((opt = subgetopt_r(argc, (const char * const*) argv, "c:", &l)) != -1) {
		switch (opt) {
		case 'c': /* wallpaper cache directory */
			cachedir = l.arg;
			break;
		default:
			printf("switch %d", argc);
			strerr_dieusage(100, USAGE);
			break;
		}
	}
	argc -= l.ind;
	argv += l.ind;
	if (argc != 1) {
		printf("argc %d", argc);
		strerr_dieusage(100, USAGE);
	}

	if (chdir(cachedir) < 0)
		strerr_diefu(111, "chdir to cache dir "
				"(mkdir it if it doesn't exist)");

	char const *wtc_argv[] = { "s6-tlsclient", "-N", "-Z", "--",
		WALLTAKER_URL, "443", "mvwtc", argv[0], 0 };

	if (!env_addmodif(&envmod, "CADIR", CADIR_DIR))
		strerr_diefu(111, "set CADIR");

	xmexec_m(wtc_argv, envmod.s, envmod.len);

	return 111; /* uh oh! */
}