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#ifndef _AT_VERSION_TOOL_H_
#define _AT_VERSION_TOOL_H_

#include <string>
#include <list>

class ATVersion
{
public:
	/**
	function check if user requested version information to be displayed on std output
	and show version number
	@param argc Argument count
	@param argv Argument array
	@param versionStr Version string to be displayed
	@return bool true if version user requested version to be displayed
		     false if version information was not displayed
	*/
	static bool ShowVersionIfArg(int argc, const char **argv, const char *versionStr);

	/**
	function gets application version - if target application uses this class to show version
	@param appName application name
	@param version string returning version or empty string if version not determined
	@return true - if application is running, false - if not.
	*/
	static bool GetAppVersion(const char *appName, std::string &version);

	/**
	function gets process version - if target application uses this class to show version
	@param cmd path to application
	@return string version or empty string if version not determined
	*/
	static std::string GetProcessVersion(std::string cmd);

	/**
	Checks if an application is running in the system.
	@param app_name Application binary name (not including path).
	@param pids returned list of pids of searched application
	@return true - if application is running, false - if not.
	*/
	static bool IsAppRunning(const char *app_name, std::list<unsigned long> &pids);

	/**
	Returns path associated with application with given PID. Note that to access this information for all processes
	the function must be called with elevated privileges.
	@param pid PID of application of interest.
	@return Application path if possible.
		Empty string if access is not possbile.
		NULL if the application isn't runnig.
	*/
	static std::string GetAppPathByPid(unsigned long pid);

	static const std::string appSearchPath;
};

#endif /* _AT_VERSION_TOOL_H_ */