Initial check-inicefish_8.99.5icefish/8.99.5halibut_8.0.6halibut_8.0.5halibut/8.0.6halibut/8.0.58.99.58.0.68.0.5halibut

A simple application that pops up to display the guimetadata responses
from the voice capabilities API. It is currently considered to be Alexa
specific, as it relies on the response templates provided by the Alexa
voiceagent via the capabilities API, and there are no other voiceagents
available to vet whether those template contents will be treated as a
fixed part of the capabilities API.  At the moment, only the two types
of body template (BodyTemplate1 and 2) and the WeatherTemplate are
handled, and rendering of the latter is only of the current day's
weather.

The application uses the onscreen role so that it can pop up above
running applications.  To drive the pop up behavior, a simple client is
used to handle the guimetadata events from vshl-capabilities and show
the window with the homescreen API.  Filling in the template is handled
with separate support from libqtappfw to provide the template data to
Qt.

Additionally, note that there currently is a hook for the navigation
capability in the simple afb client to enable raising the navigation
application when the setDestination capability is triggered.  Once a
better place to handle this is architected, it should be moved out of
this application.

Bug-AGL: SPEC-3110

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ifce9554b93d1e781283fd68f8e911a7010dd8cf0

1 files changed, 67 insertions, 0 deletions

diff --git a/app/afbclient.h b/app/afbclient.h
new file mode 100644
index 0000000..596a43f
--- /dev/null
+++ b/app/afbclient.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2019,2020 Konsulko Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef AFBCLIENT_H
+#define AFBCLIENT_H
+
+#include <string>
+#include <thread>
+#include <map>
+#include <functional>
+#include <systemd/sd-event.h>
+#include <json-c/json.h>
+
+extern "C"
+{
+#include <afb/afb-wsj1.h>
+#include <afb/afb-ws-client.h>
+}
+
+class AfbClient
+{
+public:
+	AfbClient(int port, const std::string &token);
+	~AfbClient();
+
+	using reply_callback_fn = std::function<void(json_object*)>;
+	using event_callback_fn = std::function<void(const char*, json_object*, void*)>;
+
+	int call(const std::string &api, const std::string &verb, struct json_object* arg, reply_callback_fn cb = nullptr);
+	int call_sync(const std::string &api, const std::string &verb, struct json_object* arg, struct json_object **resp = NULL);
+	int subscribe(const std::string &api, const std::string &event, const std::string &eventValueString = "event");
+	int subscribe(const std::string &api, json_object *j_obj, const std::string &subscribeValueString = "subscribe");
+	int unsubscribe(const std::string &api, const std::string &eventString, const std::string &eventValueString = "event");
+	int unsubscribe(const std::string &api, json_object *j_obj, const std::string &unsubscribeValueString = "unsubscribe");
+	void set_event_callback(event_callback_fn cb, void *closure);
+
+	static void on_event_cb(void *closure, const char* event, struct afb_wsj1_msg *msg) {
+		if(closure)
+			static_cast<AfbClient*>(closure)->on_event(event, msg);
+	}
+
+private:
+	struct afb_wsj1 *m_ws = nullptr;
+	struct afb_wsj1_itf m_itf;
+	std::thread m_afb_thread;
+	sd_event *m_afb_loop = nullptr;
+	bool m_valid = false;
+	event_callback_fn m_event_cb = nullptr;
+	void *m_event_cb_closure = nullptr;
+
+	void on_event(const char* event, struct afb_wsj1_msg *msg);
+};
+
+#endif // AFBCLIENT_H