Get and store printer status

The printer service constantly emits a signal whenever the signal
changes. If we connect however and if the status is for example IDLE,
we won't know about this state until the signal gets emitted via a
status change. To counter this, we also add a method to get the initial
status. Right now, we store only the actual state.

Signed-off-by: Olliver Schinagl <o.schinagl@ultimaker.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/src/eulogium.c b/src/eulogium.c
index f93567d..b7ecf50 100644
--- a/src/eulogium.c
+++ b/src/eulogium.c
@@ -990,6 +990,47 @@ static void on_name_owner_changed(void *data EINA_UNUSED, const char *bus, const
    printf("Bus=%s | old=%s | new=%s\n", bus, old_id, new_id);
 }
 
+struct _status_msg {
+	int16_t i;
+	char *s;
+};
+
+static void eulogium_printer_status_set(struct printer_data *printer, struct _status_msg *status)
+{
+	EINA_LOG_INFO("Printer status: %s", status->s);
+	printer->status = status->i;
+}
+
+static void _on_get_status_ret(void *data, const Eldbus_Message *msg, Eldbus_Pending *pending EINA_UNUSED)
+{
+	const char *errname, *errmsg;
+	struct eulogium_data *eulogium = data;
+	struct _status_msg status;
+
+	if (eldbus_message_error_get(msg, &errname, &errmsg)) {
+		EINA_LOG_ERR("%s %s", errname, errmsg);
+	} else if (eldbus_message_arguments_get(msg, "(ns)", &status)) {
+		EINA_LOG_ERR("Failed to get printer status.");
+	} else {
+		eulogium_printer_status_set(&eulogium->printer, &status);
+	}
+}
+
+static void _on_status_changed_ret(void *data, const Eldbus_Message *msg)
+{
+	const char *errname, *errmsg;
+	struct eulogium_data *eulogium = data;
+	struct _status_msg status;
+
+	if (eldbus_message_error_get(msg, &errname, &errmsg)) {
+		EINA_LOG_ERR("%s %s", errname, errmsg);
+	} else if (eldbus_message_arguments_get(msg, "(ns)", &status)) {
+		EINA_LOG_ERR("Failed to get printer status.");
+	} else {
+		eulogium_printer_status_set(&eulogium->printer, &status);
+	}
+}
+
 static int eulogium_dbus_init(struct eulogium_data *eulogium)
 {
 	Eldbus_Object *obj;
@@ -1039,6 +1080,12 @@ static int eulogium_dbus_init(struct eulogium_data *eulogium)
 		return -EFAULT;
 	}
 	eldbus_name_owner_changed_callback_add(eulogium->dbus.conn, "nl.ultimaker.printer", on_name_owner_changed, eulogium->dbus.conn, EINA_TRUE);
+	/* First query the status and store it, we don't know the initial status,
+	 * and the statusChanged signal may not have been fired yet
+	 */
+	/* TODO: put signal/method name strings in macro/LUT */
+	eldbus_proxy_call(eulogium->dbus.proxy[PRINTER], "getStatus", _on_get_status_ret, eulogium, -1, "");
+	eldbus_proxy_signal_handler_add(eulogium->dbus.proxy[PRINTER], "statusChanged", _on_status_changed_ret, eulogium);
 
 	return 0;
 }