#define _BSD_SOURCE
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdnoreturn.h>
#include <unistd.h>

#include "config.h"
#include "project.h"
#include "req.h"
#include "util.h"
#include "worker.h"

noreturn static void
usage(void)
{
	fprintf(stderr, "usage: %s [-s sock] command [args...]\n", getprogname());
	exit(1);
}

noreturn static void
help(void)
{
	fprintf(stderr, "usage: job-queue project tag\n");
	fprintf(stderr, "       project-add name desc url script\n");
	fprintf(stderr, "       project-list\n");
	fprintf(stderr, "       worker-add name desc\n");
	fprintf(stderr, "       worker-list\n");
	exit(0);
}

static struct req
cmd_job_queue(int argc, char **argv)
{
	if (argc < 2)
		usage();

	return req_job_queue(argv[0], argv[1]);
}

static struct req
cmd_project_add(int argc, char **argv)
{
	struct project pc;

	if (argc < 4)
		usage();

	memset(&pc, 0, sizeof (pc));
	strlcpy(pc.name, argv[0], sizeof (pc.name));
	strlcpy(pc.desc, argv[1], sizeof (pc.desc));
	strlcpy(pc.url, argv[2], sizeof (pc.url));
	strlcpy(pc.script, argv[3], sizeof (pc.script));

	return req_project_add(&pc);
}

static struct req
cmd_project_list(int argc, char **argv)
{
	(void)argc;
	(void)argv;

	struct project pc[SCI_PROJECT_MAX];
	struct req req;
	size_t pcsz = UTIL_SIZE(pc);

	memset(pc, 0, sizeof (pc));

	if ((req = req_project_list(pc, &pcsz)).status)
		return req;

	for (size_t i = 0; i < pcsz; ++i) {
		printf("%-16s%s\n", "name:", pc[i].name);
		printf("%-16s%s\n", "description:", pc[i].desc);
		printf("%-16s%s\n", "url:", pc[i].url);
		printf("%-16s%s\n", "script:", pc[i].script);

		if (i + 1 < pcsz)
			printf("\n");
	}

	return req;
}

static struct req
cmd_worker_add(int argc, char **argv)
{
	struct worker wk;

	if (argc < 2)
		usage();

	memset(&wk, 0, sizeof (wk));
	strlcpy(wk.name, argv[0], sizeof (wk.name));
	strlcpy(wk.desc, argv[1], sizeof (wk.desc));

	return req_worker_add(&wk);
}

static struct req
cmd_worker_list(int argc, char **argv)
{
	(void)argc;
	(void)argv;

	struct worker wk[SCI_WORKER_MAX];
	struct req req;
	size_t wksz = UTIL_SIZE(wk);

	if ((req = req_worker_list(wk, &wksz)).status)
		return req;

	for (size_t i = 0; i < wksz; ++i) {
		printf("%-16s%s\n", "name:", wk[i].name);
		printf("%-16s%s\n", "description:", wk[i].desc);

		if (i + 1 < wksz)
			printf("\n");
	}

	return req;
}

static struct {
	const char *name;
	struct req (*exec)(int, char **);
} commands[] = {
	{ "job-queue",          cmd_job_queue           },
	{ "project-add",        cmd_project_add         },
	{ "project-list",       cmd_project_list        },
	{ "worker-add",         cmd_worker_add          },
	{ "worker-list",        cmd_worker_list         },
	{ NULL,                 NULL                    }
};

int
main(int argc, char **argv)
{
	const char *sock = VARDIR "/run/sci.sock";
	int ch;

	setprogname("scictl");

	while ((ch = getopt(argc, argv, "s:")) != -1) {
		switch (ch) {
		case 's':
			sock = optarg;
			break;
		default:
			break;
		}
	}

	argc -= optind;
	argv += optind;

	if (argc <= 0)
		usage();
	if (strcmp(argv[0], "help") == 0)
		help();
	if (req_connect(sock) < 0)
		err(1, "%s", sock);

	for (size_t i = 0; commands[i].name; ++i) {
		struct req res;

		if (strcmp(commands[i].name, argv[0]) == 0) {
			res = commands[i].exec(--argc, ++argv);

			if (res.status)
				warnx("%s", res.msg);

			break;
		}
	}

	req_finish();
}