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 // Copyright 2020, Jefferson Science Associates, LLC.
 // Subject to the terms in the LICENSE file found in the top-level directory.
 
 
 #include "JControlEventProcessor.h"
 #include <JANA/JLogger.h>
 
 
 //-------------------------------------------------------------
 // JControlEventProcessor
 //-------------------------------------------------------------
 JControlEventProcessor::JControlEventProcessor():jstringification(new JStringification) {
     SetTypeName(NAME_OF_THIS); // Provide JANA with this class's name
 }
 
 //-------------------------------------------------------------
 // Init
 //-------------------------------------------------------------
 void JControlEventProcessor::Init() {
     LOG << "JControlEventProcessor::Init" << LOG_END;
 
     GetApplication()->GetJParameterManager()->SetDefaultParameter("jana:debug_mode", _debug_mode, "Turn on JANA debug mode for janacontrol plugin. (Will require jana-control.py GUI to step through events)");
 }
 
 //-------------------------------------------------------------
 // Process
 //-------------------------------------------------------------
 void JControlEventProcessor::Process(const std::shared_ptr<const JEvent> &event) {
 
     // If _debug_mode is on then stall here until told to move on to next event
     if( _debug_mode ){
 
         // Serialize threads so setting _wait to true only lets one event through
         static std::mutex mtx;
         std::lock_guard<std::mutex> lck(mtx);
 
         // Copy pointer to JEvent to internal member so it can be used to probe
         // the event via other methods.
         _jevent = event;
 
         while(_wait && _debug_mode){
             std::chrono::milliseconds wait_time {100};
             std::this_thread::sleep_for(wait_time);
         }
         _wait=true; // set up to stall on next event
 
         // Release shared_ptr to JEvent since we are done with it.
         _jevent.reset();
     }
 
     if( _fetch_flag ) FetchObjects( event );
  }
 
 //-------------------------------------------------------------
 // Finish
 //-------------------------------------------------------------
 void JControlEventProcessor::Finish() {
     // Close any resources
     LOG << "JControlEventProcessor::Finish" << LOG_END;
 }
 
 //-------------------------------------------------------------
 // SetDebugMode
 //-------------------------------------------------------------
 void JControlEventProcessor::SetDebugMode(bool debug_mode){
     _debug_mode = debug_mode;
     GetApplication()->SetTimeoutEnabled( !_debug_mode );
 }
 
 //-------------------------------------------------------------
 // NextEvent
 //-------------------------------------------------------------
 void JControlEventProcessor::NextEvent(void){
     _wait = false;
 }
 
 //-------------------------------------------------------------
 // GetObjectStatus
 //
 // Get count of objects already created for the current event
 // for each type of factory.
 //-------------------------------------------------------------
 void JControlEventProcessor::GetObjectStatus( std::map<JFactorySummary, std::size_t> &factory_object_counts ){
 
     // bombproof against getting called with no active JEvent
     if(_jevent.get() == nullptr ) return;
 
     // Get list of all factories associated with this event.
     // n.b. This will also list objects inserted by the event source
     // unlike _jevent->GetJApplication()->GetComponentSummary()
     // which only lists registered factories.
     auto factories = _jevent->GetAllFactories();
     for( auto fac : factories ){
         JFactorySummary fac_info;
         fac_info.plugin_name = fac->GetPluginName();
         fac_info.factory_name = fac->GetFactoryName();
         fac_info.factory_tag = fac->GetTag();
         fac_info.object_name = fac->GetObjectName();
         if(fac_info.factory_name == "") fac_info.factory_name = "JFactoryT<" + fac_info.object_name + ">";
         if( fac ) factory_object_counts[fac_info] = fac->GetNumObjects();
     }
 }
 
 //-------------------------------------------------------------
 // GetObjects
 //
 // Get objects for the specified factory in the form of strings.
 //-------------------------------------------------------------
 void JControlEventProcessor::GetObjects(const std::string &/* factory_name */, const std::string &factory_tag, const std::string &object_name, std::map<std::string, JObjectSummary> &objects){
     // bombproof against getting called with no active JEvent
     if(_jevent.get() == nullptr ) return;
 
     jstringification->GetObjectSummaries(objects, _jevent, object_name, factory_tag);
 }
 
 //-------------------------------------------------------------
 // SetFetch
 //
 // Set list of factories whose objects should be retrieved and packaged
 // into strings during the next event.
 //-------------------------------------------------------------
 void JControlEventProcessor::SetFetchFactories(std::set<std::string> &factorytags){
 
     _fetch_object_summaries.clear();
     _fetch_metadata.clear();
     _fetch_factorytags = factorytags;
     _fetch_flag = true;
 }
 
 //-------------------------------------------------------------
 // FetchObjects
 //
 /// Fetch the objects set in the fetch list by an earlier call to
 /// SetFetch(). Objects will be retrieved from the given event
 /// and JObjectSummary objects created for them and stored in
 /// the _fetch_object_summaries container. The _fetch_flag
 /// will be set to false once the objects in _fetch_object_summaries
 /// are ready.
 //-------------------------------------------------------------
 void JControlEventProcessor::FetchObjects(std::shared_ptr<const JEvent> jevent){
 
     _fetch_object_summaries.clear(); // should be redundant with clear in SetFetchFactories()
     _fetch_metadata.clear();
 
     _fetch_metadata["run_number"]   = ToString( GetRunNumber());
     _fetch_metadata["event_number"] = ToString( GetEventNumber());
 
     // Loop over factories set in a previous call to SetFetchFactories()
     for( const auto& factorytag : _fetch_factorytags){
         // Add entry to _fetch_object_summaries and get reference to it
         auto &objects = _fetch_object_summaries[factorytag];
 
         // Split factorytag string into factory part and tag part
         auto pos = factorytag.find(":");
         std::string factory_name = factorytag.substr(0, pos);
         std::string tag = (pos==std::string::npos ? "":factorytag.substr(pos+1));
 
         jstringification->GetObjectSummaries(objects, jevent, factory_name, tag);
     }
 
     // All done. Notify JControlZMQ::FetchJANAObjectsJSON
     _fetch_flag = false;
 }
 
 //-------------------------------------------------------------
 // FetchObjectsNow
 //
 /// This is a wrapper to FetchObjects that can be called while in
 /// debug mode (i.e. when event processing is stalled). It allows
 /// JControlZMQ::FetchJANAObjectsJSON to get objects from the
 /// current event while in debug_mode. Like FetchObjects(), this
 /// assumes SetFetch() has already been called. This will set the
 /// _fetch_flag to false when done and should be followed by a
 /// call to GetLastFetchResult() to get the actual results.
 //-------------------------------------------------------------
 void JControlEventProcessor::FetchObjectsNow(void){
     // bombproof against getting called with no active JEvent
     if(_jevent.get() == nullptr ) return;
 
     FetchObjects( _jevent );
 }
 
 //-------------------------------------------------------------
 // GetRunNumber
 //-------------------------------------------------------------
 uint32_t JControlEventProcessor::GetRunNumber(void){
     if(_jevent.get() == nullptr ) return 0;
     return _jevent->GetRunNumber();
 }
 
 //-------------------------------------------------------------
 // GetEventNumber
 //-------------------------------------------------------------
 uint64_t JControlEventProcessor::GetEventNumber(void){
     if(_jevent.get() == nullptr ) return 0;
     return _jevent->GetEventNumber();
 }

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