/*
 * aql.cpp
 *
 *  Created on: 1. 7. 2017
 *	  Author: Jan Travnicek
 */

#include <istream>
#include <iostream>

template < class T, class U >
std::istream& operator>> ( std::istream & in, std::pair < T, U > & value ) {
	std::string tmp;
	in >> tmp;
	size_t posEqual = tmp.find ( "=" );

	if ( posEqual == std::string::npos )
		in.setstate(std::ios_base::failbit);

	value.first = tmp.substr ( 0, posEqual );
	value.second = tmp.substr ( posEqual + 1, tmp.size ( ) );

	if ( value.first.empty ( ) || value.second.empty ( ) )
		in.setstate(std::ios_base::failbit);

	return in;
}

#include <string>

#include <measure>
#include <tclap/CmdLine.h>
#include <global/GlobalData.h>

#include "prompt/Prompt.h"

namespace TCLAP {

template < class T, class U >
struct ArgTraits < std::pair < T, U > > {
	typedef ValueLike ValueCategory;
};

} /* namespace TCLAP */

int main ( int argc, char * argv[] ) {

	try {
		common::GlobalData::argc = argc;
		common::GlobalData::argv = argv;

		TCLAP::CmdLine cmd ( "Algorithms query language binary", ' ', "0.01" );

		TCLAP::ValueArg < std::string > query ( "q", "query", "Query index", false, "", "query" );
		cmd.add ( query );

		TCLAP::SwitchArg measure ( "m", "measure", "Measure times", false );
		cmd.add ( measure );

		TCLAP::SwitchArg verbose ( "v", "verbose", "Be verbose", false );
		cmd.add ( verbose );

		TCLAP::MultiArg < std::pair < std::string, std::string > > params ( "p", "params", "Query index", false, "pair < string, string >" );
		cmd.add ( params );

		cmd.parse ( argc, argv );

		if(verbose.isSet())
			common::GlobalData::verbose = true;
		if(measure.isSet())
			common::GlobalData::measure = true;

		measurements::start ( "Overal", measurements::Type::OVERALL );

		cli::Environment environment;
		environment.set ( "stdin", "-" );
		environment.set ( "stdout", "-" );

		for ( const std::pair < std::string, std::string > & param : params.getValue ( ) ) {
			environment.set ( param.first, param.second );
		}

		Prompt p ( std::move ( environment ) );

		cli::Command::Result result = cli::Command::Result::OK;
		if ( query.isSet ( ) )
			result = p.execute_line ( query.getValue ( ) );
		else
			result = p.run ( );

		measurements::end ( );

		if ( measure.getValue ( ) )
			std::cmeasure << measurements::results ( ) << std::endl;

		if ( result == cli::Command::Result::QUIT )
			return 0;
		else
			return 4;
	} catch ( const exception::CommonException & exception ) {
		alib::XmlDataFactory::toStdout ( exception );
		return 1;
	} catch ( const TCLAP::ArgException & exception ) {
		std::cout << exception.error ( ) << std::endl;
		return 2;
	} catch ( const std::exception & exception ) {
		std::cerr << "Exception caught: " << exception.what ( ) << std::endl;
		return 3;
	} catch ( ... ) {
		std::cerr << "Unknown exception caught." << std::endl;
		return 127;
	}
}