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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
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package net.sourceforge.plantuml.stats;

import java.util.EnumMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.prefs.BackingStoreException;
import java.util.prefs.Preferences;

import net.sourceforge.plantuml.FileFormat;
import net.sourceforge.plantuml.api.NumberAnalyzed;
import net.sourceforge.plantuml.log.Logme;
import net.sourceforge.plantuml.stats.api.StatsColumn;
import net.sourceforge.plantuml.stats.api.StatsLine;
import net.sourceforge.plantuml.stats.api.StatsTable;

public class FormatCounter {

	private ConcurrentMap data = new ConcurrentHashMap();

	public FormatCounter(String prefix) {
		for (FileFormat format : FileFormat.values()) {
			final String key = prefix + format.name();
			data.put(format, new NumberAnalyzed(key));
		}

	}

	public void plusOne(FileFormat fileFormat, long duration) {
		final NumberAnalyzed n = data.get(fileFormat);
		n.addValue(duration);
	}

	private StatsLine createLine(String name, NumberAnalyzed n) {
		final Map result = new EnumMap(StatsColumn.class);
		result.put(StatsColumn.FORMAT, name);
		result.put(StatsColumn.GENERATED_COUNT, n.getNb());
		result.put(StatsColumn.GENERATED_MEAN_TIME, n.getMean());
		result.put(StatsColumn.GENERATED_STANDARD_DEVIATION, n.getStandardDeviation());
		result.put(StatsColumn.GENERATED_MAX_TIME, n.getMax());
		return new StatsLineImpl(result);
	}

	public StatsTable getStatsTable(String name) {
		final StatsTableImpl result = new StatsTableImpl(name);
		final NumberAnalyzed total = new NumberAnalyzed();
		for (Map.Entry ent : data.entrySet()) {
			final NumberAnalyzed n = ent.getValue();
			if (n.getNb() > 0) {
				result.addLine(createLine(ent.getKey().name(), n));
				total.add(n);
			}
		}
		result.addLine(createLine("Total", total));
		return result;
	}

	public void reload(String prefix, Preferences prefs) throws BackingStoreException {
		for (String key : prefs.keys()) {
			if (key.startsWith(prefix)) {
				try {
					final String name = removeDotSaved(key);
					final NumberAnalyzed value = NumberAnalyzed.load(name, prefs);
					if (value != null) {
						final String subname = name.substring(prefix.length());
						if (subname.equals("ANIMATED_GIF"))
							continue;
						final FileFormat format = FileFormat.valueOf(subname);
						data.put(format, value);
					}
				} catch (Exception e) {
					Logme.error(e);
				}
			}
		}
	}

	static String removeDotSaved(String key) {
		return key.substring(0, key.length() - ".saved".length());
	}

	public void save(Preferences prefs, FileFormat fileFormat) {
		data.get(fileFormat).save(prefs);
	}

}