#ifndef STORM_UTILITY_CLI_H_
#define STORM_UTILITY_CLI_H_

#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdio>
#include <sstream>
#include <memory>

// Includes for the linked libraries and versions header.
#ifdef STORM_HAVE_INTELTBB
#	include "tbb/tbb_stddef.h"
#endif
#ifdef STORM_HAVE_GLPK
#	include "glpk.h"
#endif
#ifdef STORM_HAVE_GUROBI
#	include "gurobi_c.h"
#endif
#ifdef STORM_HAVE_Z3
#	include "z3.h"
#endif

#include "log4cplus/logger.h"
#include "log4cplus/loggingmacros.h"
#include "log4cplus/consoleappender.h"
#include "log4cplus/fileappender.h"
log4cplus::Logger logger;

// Headers that provide auxiliary functionality.
#include "src/utility/storm-version.h"
#include "src/utility/OsDetection.h"
#include "src/settings/SettingsManager.h"

// Headers related to parsing.
#include "src/parser/AutoParser.h"
#include "src/parser/PrismParser.h"
#include "src/parser/PrctlParser.h"

// Model headers.
#include "src/models/AbstractModel.h"

// Headers of adapters.
#include "src/adapters/ExplicitModelAdapter.h"

// Headers for counterexample generation.
#include "src/counterexamples/MILPMinimalLabelSetGenerator.h"
#include "src/counterexamples/SMTMinimalCommandSetGenerator.h"

// Headers related to exception handling.
#include "src/exceptions/InvalidSettingsException.h"
#include "src/exceptions/InvalidTypeException.h"

namespace storm {
    namespace utility {
        namespace cli {
            
            /*!
             * Initializes the logging framework and sets up logging to console.
             */
            void initializeLogger() {
                logger = log4cplus::Logger::getInstance(LOG4CPLUS_TEXT("main"));
                logger.setLogLevel(log4cplus::INFO_LOG_LEVEL);
                log4cplus::SharedAppenderPtr consoleLogAppender(new log4cplus::ConsoleAppender());
                consoleLogAppender->setName("mainConsoleAppender");
                consoleLogAppender->setThreshold(log4cplus::WARN_LOG_LEVEL);
                consoleLogAppender->setLayout(std::auto_ptr<log4cplus::Layout>(new log4cplus::PatternLayout("%-5p - %D{%H:%M:%S} (%r ms) - %b:%L: %m%n")));
                logger.addAppender(consoleLogAppender);
            }
            
            /*!
             * Performs some necessary initializations.
             */
            void setUp() {
                initializeLogger();
                std::cout.precision(10);
            }
            
            /*!
             * Performs some necessary clean-up.
             */
            void cleanUp() {
                // Intentionally left empty.
            }
            
            /*!
             * Sets up the logging to file.
             */
            void initializeFileLogging() {
                log4cplus::SharedAppenderPtr fileLogAppender(new log4cplus::FileAppender(storm::settings::debugSettings().getLogfilename()));
                fileLogAppender->setName("mainFileAppender");
                fileLogAppender->setLayout(std::auto_ptr<log4cplus::Layout>(new log4cplus::PatternLayout("%-5p - %D{%H:%M:%S} (%r ms) - %F:%L: %m%n")));
                logger.addAppender(fileLogAppender);
            }
            
            /*!
             * Gives the current working directory
             *
             * @return std::string The path of the current working directory
             */
            std::string getCurrentWorkingDirectory() {
                char temp[512];
                return (GetCurrentDir(temp, 512 - 1) ? std::string(temp) : std::string(""));
            }
            
            /*!
             * Prints the header including information about the linked libraries.
             */
            void printHeader(const int argc, const char* argv[]) {
                std::cout << "StoRM" << std::endl;
                std::cout << "-----" << std::endl << std::endl;
             	
			 
				std::cout << storm::utility::StormVersion::longVersionString() << std::endl;
#ifdef STORM_HAVE_INTELTBB
                std::cout << "Linked with Intel Threading Building Blocks v" << TBB_VERSION_MAJOR << "." << TBB_VERSION_MINOR << " (Interface version " << TBB_INTERFACE_VERSION << ")." << std::endl;
#endif
#ifdef STORM_HAVE_GLPK
                std::cout << "Linked with GNU Linear Programming Kit v" << GLP_MAJOR_VERSION << "." << GLP_MINOR_VERSION << "." << std::endl;
#endif
#ifdef STORM_HAVE_GUROBI
                std::cout << "Linked with Gurobi Optimizer v" << GRB_VERSION_MAJOR << "." << GRB_VERSION_MINOR << "." << GRB_VERSION_TECHNICAL << "." << std::endl;
#endif
#ifdef STORM_HAVE_Z3
                unsigned int z3Major, z3Minor, z3BuildNumber, z3RevisionNumber;
                Z3_get_version(&z3Major, &z3Minor, &z3BuildNumber, &z3RevisionNumber);
                std::cout << "Linked with Microsoft Z3 Optimizer v" << z3Major << "." << z3Minor << " Build " << z3BuildNumber << " Rev " << z3RevisionNumber << "." << std::endl;
#endif
                
                // "Compute" the command line argument string with which STORM was invoked.
                std::stringstream commandStream;
                for (int i = 0; i < argc; ++i) {
                    commandStream << argv[i] << " ";
                }
                std::cout << "Command line: " << commandStream.str() << std::endl;
                std::cout << "Current working directory: " << getCurrentWorkingDirectory() << std::endl << std::endl;
            }
            
            
            void printUsage() {
#ifndef WINDOWS
                struct rusage ru;
                getrusage(RUSAGE_SELF, &ru);
                
                std::cout << "===== Statistics ==============================" << std::endl;
                std::cout << "peak memory usage: " << ru.ru_maxrss/1024/1024 << "MB" << std::endl;
                std::cout << "CPU time: " << ru.ru_utime.tv_sec << "." << std::setw(3) << std::setfill('0') << ru.ru_utime.tv_usec/1000 << " seconds" << std::endl;
                std::cout << "===============================================" << std::endl;
#else
                HANDLE hProcess = GetCurrentProcess ();
                FILETIME ftCreation, ftExit, ftUser, ftKernel;
                PROCESS_MEMORY_COUNTERS pmc;
                if (GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc))) {
                    std::cout << "Memory Usage: " << std::endl;
                    std::cout << "\tPageFaultCount: " << pmc.PageFaultCount << std::endl;
                    std::cout << "\tPeakWorkingSetSize: " << pmc.PeakWorkingSetSize << std::endl;
                    std::cout << "\tWorkingSetSize: " << pmc.WorkingSetSize << std::endl;
                    std::cout << "\tQuotaPeakPagedPoolUsage: " << pmc.QuotaPeakPagedPoolUsage << std::endl;
                    std::cout << "\tQuotaPagedPoolUsage: " << pmc.QuotaPagedPoolUsage << std::endl;
                    std::cout << "\tQuotaPeakNonPagedPoolUsage: " << pmc.QuotaPeakNonPagedPoolUsage << std::endl;
                    std::cout << "\tQuotaNonPagedPoolUsage: " << pmc.QuotaNonPagedPoolUsage << std::endl;
                    std::cout << "\tPagefileUsage:" << pmc.PagefileUsage << std::endl;
                    std::cout << "\tPeakPagefileUsage: " << pmc.PeakPagefileUsage << std::endl;
                }
                
                GetProcessTimes (hProcess, &ftCreation, &ftExit, &ftKernel, &ftUser);
                
                ULARGE_INTEGER uLargeInteger;
                uLargeInteger.LowPart = ftKernel.dwLowDateTime;
                uLargeInteger.HighPart = ftKernel.dwHighDateTime;
                double kernelTime = static_cast<double>(uLargeInteger.QuadPart) / 10000.0; // 100 ns Resolution to milliseconds
                uLargeInteger.LowPart = ftUser.dwLowDateTime;
                uLargeInteger.HighPart = ftUser.dwHighDateTime;
                double userTime = static_cast<double>(uLargeInteger.QuadPart) / 10000.0;
                
                std::cout << "CPU Time: " << std::endl;
                std::cout << "\tKernel Time: " << std::setprecision(5) << kernelTime << "ms" << std::endl;
                std::cout << "\tUser Time: " << std::setprecision(5) << userTime << "ms" << std::endl;
#endif
            }
            
            
            /*!
             * Parses the given command line arguments.
             *
             * @param argc The argc argument of main().
             * @param argv The argv argument of main().
             * @return True iff the program should continue to run after parsing the options.
             */
            bool parseOptions(const int argc, const char* argv[]) {
                storm::settings::SettingsManager& manager = storm::settings::mutableManager();
                try {
                    manager.setFromCommandLine(argc, argv);
                } catch (storm::exceptions::OptionParserException& e) {
                    manager.printHelp();
                    throw e;
                    return false;
                }
                
                if (storm::settings::generalSettings().isHelpSet()) {
                    storm::settings::manager().printHelp(storm::settings::generalSettings().getHelpModuleName());
                    return false;
                }
				
				if (storm::settings::generalSettings().isVersionSet()) {
					storm::settings::manager().printVersion();
					return false;
				}
				
                
                if (storm::settings::generalSettings().isVerboseSet()) {
                    logger.getAppender("mainConsoleAppender")->setThreshold(log4cplus::INFO_LOG_LEVEL);
                    LOG4CPLUS_INFO(logger, "Enabled verbose mode, log output gets printed to console.");
                }
                if (storm::settings::debugSettings().isDebugSet()) {
                    logger.setLogLevel(log4cplus::DEBUG_LOG_LEVEL);
                    logger.getAppender("mainConsoleAppender")->setThreshold(log4cplus::DEBUG_LOG_LEVEL);
                    LOG4CPLUS_INFO(logger, "Enabled very verbose mode, log output gets printed to console.");
                }
                if (storm::settings::debugSettings().isTraceSet()) {
                    logger.setLogLevel(log4cplus::TRACE_LOG_LEVEL);
                    logger.getAppender("mainConsoleAppender")->setThreshold(log4cplus::TRACE_LOG_LEVEL);
                    LOG4CPLUS_INFO(logger, "Enabled trace mode, log output gets printed to console.");
                }
                if (storm::settings::debugSettings().isLogfileSet()) {
                    initializeFileLogging();
                }
                return true;
            }
            
            template<typename ValueType>
            std::shared_ptr<storm::models::AbstractModel<ValueType>> buildModel() {
                std::shared_ptr<storm::models::AbstractModel<ValueType>> result(nullptr);
                
                storm::settings::modules::GeneralSettings settings = storm::settings::generalSettings();

                if (settings.isExplicitSet()) {
                    std::string const transitionFile = settings.getTransitionFilename();
                    std::string const labelingFile = settings.getLabelingFilename();
                    
                    // Parse (and therefore build) the model.
                    result = storm::parser::AutoParser::parseModel(transitionFile, labelingFile, settings.isStateRewardsSet() ? settings.getStateRewardsFilename() : "", settings.isTransitionRewardsSet() ? settings.getTransitionRewardsFilename() : "");
                } else if (settings.isSymbolicSet()) {
                    std::string const programFile = settings.getSymbolicModelFilename();
                    std::string const constants = settings.getConstantDefinitionString();
                    
                    // Start by parsing the symbolic model file.
                    storm::prism::Program program = storm::parser::PrismParser::parse(programFile);
                    
                    // Then, build the model from the symbolic description.
                    result = storm::adapters::ExplicitModelAdapter<double>::translateProgram(program, constants);
                } else {
                    STORM_LOG_THROW(false, storm::exceptions::InvalidSettingsException, "No input model.");
                }
                
                return result;
            }
            
            void generateCounterexample(std::shared_ptr<storm::models::AbstractModel<double>> model, std::shared_ptr<storm::properties::prctl::AbstractPrctlFormula<double>> const& formula) {
                if (storm::settings::counterexampleGeneratorSettings().isMinimalCommandSetGenerationSet()) {
                    STORM_LOG_THROW(model->getType() == storm::models::MDP, storm::exceptions::InvalidTypeException, "Minimal command set generation is only available for MDPs.");
                    STORM_LOG_THROW(storm::settings::generalSettings().isSymbolicSet(), storm::exceptions::InvalidSettingsException, "Minimal command set generation is only available for symbolic models.");
                    
                    std::shared_ptr<storm::models::Mdp<double>> mdp = model->as<storm::models::Mdp<double>>();

                    // FIXME: re-parse the program.
                    std::string const programFile = storm::settings::generalSettings().getSymbolicModelFilename();
                    std::string const constants = storm::settings::generalSettings().getConstantDefinitionString();
                    storm::prism::Program program = storm::parser::PrismParser::parse(programFile);

                    // Determine whether we are required to use the MILP-version or the SAT-version.
                    bool useMILP = storm::settings::counterexampleGeneratorSettings().isUseMilpBasedMinimalCommandSetGenerationSet();

                    if (useMILP) {
                        storm::counterexamples::MILPMinimalLabelSetGenerator<double>::computeCounterexample(program, *mdp, formula);
                    } else {
                        storm::counterexamples::SMTMinimalCommandSetGenerator<double>::computeCounterexample(program, constants, *mdp, formula);
                    }

                } else {
                    STORM_LOG_THROW(false, storm::exceptions::InvalidSettingsException, "No suitable counterexample representation selected.");
                }
            }
            
            void processOptions() {
                storm::settings::modules::GeneralSettings settings = storm::settings::generalSettings();
                
                // Start by parsing/building the model.
                std::shared_ptr<storm::models::AbstractModel<double>> model = buildModel<double>();
                
                // Print some information about the model.
                model->printModelInformationToStream(std::cout);
                
                // If we were requested to generate a counterexample, we now do so.
                if (settings.isCounterexampleSet()) {
                    STORM_LOG_THROW(settings.isPctlPropertySet(), storm::exceptions::InvalidSettingsException, "Unable to generate counterexample without a property.");
                    std::shared_ptr<storm::properties::prctl::PrctlFilter<double>> filterFormula = storm::parser::PrctlParser::parsePrctlFormula(settings.getPctlProperty());
                    generateCounterexample(model, filterFormula->getChild());
                }
            }

        }
    }
}

#endif