#ifndef PARAMETERS_HPP
#define PARAMETERS_HPP

#include <string>
#include <iostream>
#include <thread>

class Parameters
{
public:
	Parameters():
		workerCount_(std::thread::hardware_concurrency()),
		searchPattern_("")
	{};

	~Parameters() {};

	bool parseCmdLine(int argc, char** argv)
	{
		for (int i = 1; i < argc; i++)
		{
			std::string arg = argv[i];
			if (0 == arg.compare(0, 2, "-w"))
			{
				workerCount_ = std::stoi(arg.substr(2));
			}
			else if (0 == arg.compare(0, 1, "-"))
			{
				// invalid option
				return false;
			}
			else
			{
				// no leading dash ... must be pattern
				searchPattern_ = arg;
			}
		}

		return true;
	}

	void show_usage(const char* cmd)
	{
		std::cerr << "Invalid command line args" << std::endl;
		std::cerr
			<< "Usage: " << cmd << " [options] [search_pattern]" << std::endl
			<< "Options" << std::endl
			<< "  -wX   Number of parallel workers" << std::endl
			<< std::endl;
	};

	unsigned WorkerCount() const { return workerCount_; };
	std::string SearchPattern() const { return searchPattern_; };

private:
	unsigned workerCount_;
	std::string searchPattern_;
};

#endif