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/*
* Copyright (C) 2015, 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.
*/
#pragma once
#include <map>
#include <string>
#include <vector>
#include <ctl-config.h>
class Composer;
struct SignalValue {
bool hasBool = false;
bool boolVal;
bool hasNum = false;
double numVal;
bool hasStr = false;
std::string strVal;
};
class Signal
{
private:
std::string id_;
std::string event_;
std::vector<std::string> dependsSigV_;
long long int timestamp_;
struct SignalValue value_;
std::map<long long int, struct SignalValue> history_; ///< history_ - Hold signal value history in map with <timestamp, value>
double frequency_;
std::string unit_;
CtlActionT* onReceived_;
json_object* getSignalsArgs_;
std::vector<Signal*> Observers_;
void notify() const;
void attach(Signal *obs);
int recursionCheck(const std::string& origId) const;
public:
Signal(const std::string& id, const std::string& event, std::vector<std::string>& depends, const std::string& unit, double frequency, CtlActionT* onReceived, json_object* getSignalsArgs);
Signal(const std::string& id, std::vector<std::string>& depends, const std::string& unit, double frequency, CtlActionT* onReceived);
explicit operator bool() const;
bool operator==(const Signal& other) const;
bool operator==(const std::string& aName) const;
const std::string id() const;
json_object* toJSON() const;
void set(long long int timestamp, struct SignalValue& value);
void update(long long int timestamp, struct SignalValue value);
int onReceivedCB(json_object *queryJ);
void attachToSourceSignals(Composer& composer);
double average(int seconds = 0) const;
double minimum(int seconds = 0) const;
double maximum(int seconds = 0) const;
struct SignalValue last() const;
int recursionCheck() const;
};
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