/*
 * Copyright (C) 2015, 2016 "IoT.bzh"
 * Author "Fulup Ar Foll"
 *
 * 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.
 */
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <json-c/json.h>

#include "afb-plugin.h"

const struct AFB_interface *interface;

// Sample Generic Ping Debug API
static void ping(struct afb_req request, json_object *jresp, const char *tag)
{
	static int pingcount = 0;
	json_object *query = afb_req_json(request);
	afb_req_success_f(request, jresp, "Ping Binder Daemon tag=%s count=%d query=%s", tag, ++pingcount, json_object_to_json_string(query));
}

static void pingSample (struct afb_req request)
{
	ping(request, json_object_new_string ("Some String"), "pingSample");
}

static void pingFail (struct afb_req request)
{
	afb_req_fail(request, "failed", "Ping Binder Daemon fails");
}

static void pingNull (struct afb_req request)
{
	ping(request, NULL, "pingNull");
}

static void pingBug (struct afb_req request)
{
	ping((struct afb_req){NULL,NULL,NULL}, NULL, "pingBug");
}

static void pingEvent(struct afb_req request)
{
	json_object *query = afb_req_json(request);
	afb_evmgr_push(afb_daemon_get_evmgr(interface->daemon), "event", query);
	ping(request, json_object_get(query), "event");
}


// For samples https://linuxprograms.wordpress.com/2010/05/20/json-c-libjson-tutorial/
static void pingJson (struct afb_req request) {
    json_object *jresp, *embed;    
    
    jresp = json_object_new_object();
    json_object_object_add(jresp, "myString", json_object_new_string ("Some String"));
    json_object_object_add(jresp, "myInt", json_object_new_int (1234));
     
    embed  = json_object_new_object();
    json_object_object_add(embed, "subObjString", json_object_new_string ("Some String"));
    json_object_object_add(embed, "subObjInt", json_object_new_int (5678));
    
    json_object_object_add(jresp,"eobj", embed);

    ping(request, jresp, "pingJson");
}

// NOTE: this sample does not use session to keep test a basic as possible
//       in real application most APIs should be protected with AFB_SESSION_CHECK
static const struct AFB_restapi pluginApis[]= {
  {"ping"     , AFB_SESSION_NONE, pingSample  , "Ping Application Framework"},
  {"pingfail" , AFB_SESSION_NONE, pingFail    , "Fails"},
  {"pingnull" , AFB_SESSION_NONE, pingNull    , "Return NULL"},
  {"pingbug"  , AFB_SESSION_NONE, pingBug     , "Do a Memory Violation"},
  {"pingJson" , AFB_SESSION_NONE, pingJson    , "Return a JSON object"},
  {"pingevent", AFB_SESSION_NONE, pingEvent   , "Send an event"},
  {NULL}
};

static const struct AFB_plugin plugin_desc = {
	.type = AFB_PLUGIN_JSON,
	.info = "Minimal Hello World Sample",
	.prefix = "hello",
	.apis = pluginApis
};

const struct AFB_plugin *pluginRegister (const struct AFB_interface *itf)
{
	interface = itf;
	return &plugin_desc;
}