package dslog;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

public class LogDir {
	private static LogSet getSet(Map<String, LogSet> sets, String filename) {
		String setname = filename.substring(0, filename.lastIndexOf('.'));
		LogSet set;
		set = sets.get(setname);
		if (set == null) {
			set = new LogSet(setname);
			sets.put(set.name, set);
		}
		return set;
	}
	public static SortedMap<String, LogSet> opendir(String dirname) throws IOException {
		SortedMap<String, LogSet> logsets = new TreeMap<String, LogSet>();
		List<Exception> errs = new ArrayList<Exception>();
		Files.list(Paths.get(dirname)).forEach(filepath->{
			String filename = filepath.getFileName().toString();
			if (filename.endsWith(".dslog")) {
				getSet(logsets, filename).dslogPath = filepath;
			} else if (filename.endsWith(".dsevents")) {
				getSet(logsets, filename).dseventsPath = filepath;
			} else if (filename.endsWith(".pdplog")) {
				getSet(logsets, filename).pdplogPath = filepath;
			}
		});
		return logsets;
	}
}