/* Copyright (c) 2003-2014 Dovecot authors, see the included COPYING file */

#include "imap-common.h"
#include "str.h"
#include "imap-utf7.h"
#include "imap-quote.h"
#include "imap-commands.h"
#include "mail-namespace.h"

static void list_namespaces(struct mail_namespace *ns,
			    enum mail_namespace_type type, string_t *str)
{
	string_t *mutf7_prefix = t_str_new(64);
	char ns_sep;
	bool found = FALSE;

	while (ns != NULL) {
		if (ns->type == type &&
		    (ns->flags & NAMESPACE_FLAG_HIDDEN) == 0) {
			if (!found) {
				str_append_c(str, '(');
				found = TRUE;
			}
			ns_sep = mail_namespace_get_sep(ns);
			str_append_c(str, '(');

			str_truncate(mutf7_prefix, 0);
			if (imap_utf8_to_utf7(ns->prefix, mutf7_prefix) < 0) {
				i_panic("LIST: Namespace prefix not UTF-8: %s",
					ns->prefix);
			}

			imap_append_string(str, str_c(mutf7_prefix));
			str_append(str, " \"");
			if (ns_sep == '\\')
				str_append_c(str, '\\');
			str_append_c(str, ns_sep);
			str_append(str, "\")");
		}

		ns = ns->next;
	}

	if (found)
		str_append_c(str, ')');
	else
		str_append(str, "NIL");
}

bool cmd_namespace(struct client_command_context *cmd)
{
	struct client *client = cmd->client;
	string_t *str;

	str = t_str_new(256);
	str_append(str, "* NAMESPACE ");

	list_namespaces(client->user->namespaces,
			MAIL_NAMESPACE_TYPE_PRIVATE, str);
	str_append_c(str, ' ');
	list_namespaces(client->user->namespaces,
			MAIL_NAMESPACE_TYPE_SHARED, str);
	str_append_c(str, ' ');
	list_namespaces(client->user->namespaces,
			MAIL_NAMESPACE_TYPE_PUBLIC, str);

	client_send_line(client, str_c(str));
	client_send_tagline(cmd, "OK Namespace completed.");
	return TRUE;
}