#include "logger.h"
#include "options.h"

/// Logger that writes to a file
class FileLogDriver : public LogDriverBase {
	public:
		FileLogDriver() :
			file(fopen(path.c_str(), openmode.c_str()))
		{
		}
		~FileLogDriver()
		{
			fclose(file);
		}
		void message(int priority, const char * msg) const
		{
			if (priority <= level) {
				struct tm tm;
				time_t t = time(NULL);
				localtime_r(&t, &tm);
				char tmbuf[30];
				strftime(tmbuf, sizeof(tmbuf), "%F %T", &tm);
				fprintf(file, "%s %-6.*s%s\n",
						tmbuf, 5, Log::priorityName(level), msg);
				fflush(file);
			}
		}

		INITOPTIONS;
		static int level;
	private:
		static std::string path;
		static std::string openmode;
		FILE * file;
};

DECLARE_OPTIONS(FileLogDriver, "File log options")
("common.filelog.level", Options::value(&level, -1),
 "Log to file with level <arg> (default OFF)")
("common.filelog.path", Options::value(&path, "/var/log/project2.log"),
 "Log to file with path <arg> (default '/var/log/project2.log')")
("common.filelog.openmode", Options::value(&openmode, "a"),
 "How to open the log file (see man 3 fopen) (default 'a')")
END_OPTIONS(FileLogDriver);

int FileLogDriver::level;
std::string FileLogDriver::path;
std::string FileLogDriver::openmode;

DECLARE_LOGGER_LOADER("file", FileLogDriver);