#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <string.h>
#include "sway/commands.h"
#include "sway/criteria.h"
#include "list.h"
#include "log.h"
#include "stringop.h"

struct cmd_results *cmd_assign(int argc, char **argv) {
	struct cmd_results *error = NULL;
	if ((error = checkarg(argc, "assign", EXPECTED_AT_LEAST, 2))) {
		return error;
	}

	// Create criteria
	char *err_str = NULL;
	struct criteria *criteria = criteria_parse(argv[0], &err_str);
	if (!criteria) {
		error = cmd_results_new(CMD_INVALID, err_str);
		free(err_str);
		return error;
	}

	--argc; ++argv;

	if (strncmp(*argv, "→", strlen("→")) == 0) {
		if (argc < 2) {
			free(criteria);
			return cmd_results_new(CMD_INVALID, "Missing workspace");
		}
		--argc;
		++argv;
	}

	if (strcmp(*argv, "output") == 0) {
		criteria->type = CT_ASSIGN_OUTPUT;
		--argc; ++argv;
	} else {
		if (strcmp(*argv, "workspace") == 0) {
			--argc; ++argv;
		}
		if (strcmp(*argv, "number") == 0) {
			--argc; ++argv;
			if (argv[0][0] < '0' || argv[0][0] > '9') {
				free(criteria);
				return cmd_results_new(CMD_INVALID,
						"Invalid workspace number '%s'", argv[0]);
			}
			criteria->type = CT_ASSIGN_WORKSPACE_NUMBER;
		} else {
			criteria->type = CT_ASSIGN_WORKSPACE;
		}
	}

	criteria->target = join_args(argv, argc);

	list_add(config->criteria, criteria);
	sway_log(SWAY_DEBUG, "assign: '%s' -> '%s' added", criteria->raw,
			criteria->target);

	return cmd_results_new(CMD_SUCCESS, NULL);
}