#include "logger.h"

/// Logger that writes to a file
class FileLogDriver : public LogDriverBase {
	public:
		FileLogDriver(int level, const std::string & path) :
			LogDriverBase(level),
			file(fopen(path.c_str(), "a"))
		{
		}
		~FileLogDriver()
		{
			fclose(file);
		}
		void message(int priority, const char * msg) const
		{
			if (priority <= level) {
				fprintf(file, "%s %-6.*s%s\n",
						timeStr(), 5, Log::priorityName(level), msg);
				fflush(file);
			}
		}

	private:
		FILE * file;

		const char * timeStr() const
		{
			struct tm tm;
			time_t t = time(NULL);
			localtime_r(&t, &tm);
			strftime(tmbuf, sizeof(tmbuf), "%F %T", &tm);
			return tmbuf;
		}
		mutable char tmbuf[30];
};

DECLARE_GENERIC_LOADER("file", LogDriverLoader, FileLogDriver);