#include <iostream>
#include <string>
using namespace std;

#include "IntersectionSimulationClass.h"

//Programmer: Andrew Morgan
//Date: November 2020
//Purpose: High-level main function to setup a simulation of traffic
//         flow through an intersection.  This is being written to
//         implement project 5 in EECS402.
int main(
     int argc,
     char *argv[]
     )
{
  bool success = true;
  string specifiedParamFname;
  IntersectionSimulationClass simObj;

  //Check that user specified the necessary command line arg(s)..
  if (argc != 2)
  {
    cout << "Usage: " << argv[0] << " <parameterFile>" << endl;
    success = false;
  }
  else
  {
    specifiedParamFname = string(argv[1]);
  }

  if (success)
  {
    //Read input parameters and print to screen for reference..
    cout << "Reading parameters from file: " << specifiedParamFname << endl;
    simObj.readParametersFromFile(specifiedParamFname);
    simObj.printParameters();

    if (!simObj.getIsSetupProperly())
    {
      cout << "Cannot run simulation as it is not setup properly!" << endl;
      success = false;
    }
  }

  if (success)
  {
    //Schedule the initial events that will "seed" the event-driven simulation
    cout << endl;
    cout << "Schedule simulation seed events" << endl;
    simObj.scheduleSeedEvents();

    //When the simulation recognizes it should stop handling events,
    //the call to "handleNextEvent" will return false.  This is
    //expected to occur when the next event's schedule time is 
    //after the end time of the simulation (an input parameter).
    cout << endl;
    cout << "Starting simulation!" << endl;

    bool doKeepRunning = true;
    while (doKeepRunning)
    {
      //Handle the next scheduled event now..
      doKeepRunning = simObj.handleNextEvent();
    }
  }

  //Indicate whether things went well or not, and, if so, print out the
  //simualtion statistics that were computed during the run.
  if (success)
  {
    cout << "Simulation ran successfully!" << endl;
    simObj.printStatistics();
  }
  else
  {
    cout << "Simulation did NOT run successfully..." << endl;
  }

  return 0;
}