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/*
* Copyright (C) 2016 "IoT.bzh"
* Author Romain Forlot <romain.forlot@iot.bzh>
*
* 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 // needed for vasprintf
#define AFB_BINDING_VERSION 2
#include <afb/afb-binding.h>
#include <systemd/sd-event.h>
#include <json-c/json_object.h>
#include <stdbool.h>
#include <string.h>
#include "ctl-plugin.h"
#include "wrap-json.h"
CTLP_REGISTER("low-can");
typedef struct {
bool door;
bool window;
} doorT;
typedef struct {
doorT* front_left;
doorT* front_right;
doorT* rear_left;
doorT* rear_right;
} allDoorsCtxT;
// Call at initialisation time
CTLP_ONLOAD(plugin, api) {
allDoorsCtxT *allDoorCtx = (allDoorsCtxT*)calloc (1, sizeof(allDoorsCtxT));
memset(allDoorCtx, 0, sizeof(allDoorsCtxT));
AFB_NOTICE ("Low-can plugin: label='%s' version='%s' info='%s'", plugin->label, plugin->version, plugin->info);
return (void*)allDoorCtx;
}
CTLP_CAPI (subscribeToLow, source, argsJ, eventJ, context) {
json_object* signalArrayJ = NULL, *subscribeArgsJ = NULL, *subscribeFilterJ = NULL, *responseJ = NULL;
const char* unit = NULL;
double frequency = 0;
int err = 0;
err = wrap_json_unpack(eventJ, "{so,s?s,s?F !}",
"signal", &signalArrayJ,
"unit", &unit,
"frequency", &frequency);
if(err)
{
AFB_ERROR("Problem to unpack JSON object eventJ: %s",
json_object_to_json_string(eventJ));
return err;
}
if(frequency >= 0)
{
wrap_json_pack(&subscribeFilterJ, "{sf}", "frequency", frequency);
}
for (int idx = 0; idx < json_object_array_length(signalArrayJ); idx++)
{
json_object* aSignalJ = json_object_array_get_idx(signalArrayJ, idx);
err = wrap_json_pack(&subscribeArgsJ, "{ss, so*}",
"event", json_object_get_string(aSignalJ),
"filter", subscribeFilterJ);
if(err)
{
AFB_ERROR("Error building subscription query object");
return err;
}
AFB_DEBUG("Calling subscribe with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY));
err = afb_service_call_sync("low-can", "subscribe", subscribeArgsJ, &responseJ);
if(err)
{
AFB_ERROR("Can't find api 'low-can'");
return err;
}
}
return err;
}
CTLP_CAPI (isOpen, source, argsJ, eventJ, context) {
const char* eventName;
json_object *eventStatus = NULL;
long long int *timestamp = NULL;
allDoorsCtxT *ctx=(allDoorsCtxT*)context;
AFB_DEBUG("Here is the situation: source:%s, args:%s, event:%s,\n fld: %s, flw: %s, frd: %s, frw: %s, rld: %s, rlw: %s, rrd: %s, rrw: %s",
source->label,
json_object_to_json_string(argsJ),
json_object_to_json_string(eventJ),
ctx->front_left->door ? "true":"false",
ctx->front_left->window ? "true":"false",
ctx->front_right->door ? "true":"false",
ctx->front_right->window ? "true":"false",
ctx->rear_left->door ? "true":"false",
ctx->rear_left->window ? "true":"false",
ctx->rear_right->door ? "true":"false",
ctx->rear_right->window ? "true":"false"
);
int err = wrap_json_unpack(eventJ, "{ss,sb,s?F}",
"event", &eventName,
"value", &eventStatus,
"timestamp", ×tamp);
if(err)
{
AFB_ERROR("Error parsing event %s", json_object_to_json_string(eventJ));
return -1;
}
if(strcasestr(eventName, "front_left"))
{
if(strcasestr(eventName, "door")) {ctx->front_left->door = eventStatus;}
else if(strcasestr(eventName, "window")) {ctx->front_left->window = eventStatus;}
else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));}
}
else if(strcasestr(eventName, "front_right"))
{
if(strcasestr(eventName, "door")) {ctx->front_right->door = eventStatus;}
else if(strcasestr(eventName, "window")) {ctx->front_right->window = eventStatus;}
else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));}
}
else if(strcasestr(eventName, "rear_left"))
{
if(strcasestr(eventName, "door")) {ctx->rear_left->door = eventStatus;}
else if(strcasestr(eventName, "window")) {ctx->rear_left->window = eventStatus;}
else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));}
}
else if(strcasestr(eventName, "rear_right"))
{
if(strcasestr(eventName, "door")) {ctx->rear_right->door = eventStatus;}
else if(strcasestr(eventName, "window")) {ctx->rear_right->window = eventStatus;}
else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));}
}
else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));}
return 0;
}
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