gernotbelger@9211: /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
gernotbelger@9211:  * Software engineering by
gernotbelger@9211:  *  Björnsen Beratende Ingenieure GmbH
gernotbelger@9211:  *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
gernotbelger@9211:  *
gernotbelger@9211:  * This file is Free Software under the GNU AGPL (>=v3)
gernotbelger@9211:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
gernotbelger@9211:  * documentation coming with Dive4Elements River for details.
gernotbelger@9211:  */
gernotbelger@9211: package org.dive4elements.river.artifacts.sinfo.tkhstate;
gernotbelger@9211: 
gernotbelger@9211: import java.util.ArrayList;
gernotbelger@9211: import java.util.Collection;
gernotbelger@9211: import java.util.Collections;
gernotbelger@9211: import java.util.HashMap;
gernotbelger@9211: import java.util.Map;
gernotbelger@9211: import java.util.Properties;
gernotbelger@9211: import java.util.Set;
gernotbelger@9211: 
gernotbelger@9211: import org.apache.commons.lang.StringUtils;
gernotbelger@9211: import org.dive4elements.artifacts.common.utils.Config;
gernotbelger@9211: import org.dive4elements.river.artifacts.model.Calculation;
gernotbelger@9211: import org.dive4elements.river.model.River;
gernotbelger@9211: 
gernotbelger@9211: /**
gernotbelger@9211:  * Represents the contents of the 'bedheights.properties' files.
gernotbelger@9211:  *
gernotbelger@9211:  * @author Gernot Belger
gernotbelger@9211:  */
gernotbelger@9211: final class DefaultBedHeightsConfig {
gernotbelger@9211: 
gernotbelger@9211:     private static final String CONFIG_FILE = "sinfo_tkh_sohlhoehen_%s.properties";
gernotbelger@9211: 
gernotbelger@9211: 
gernotbelger@9211:     public static class DefaultBedHeight {
gernotbelger@9211: 
gernotbelger@9211:         public final String description;
gernotbelger@9211:         public final double startKm;
gernotbelger@9211:         public final double endKm;
gernotbelger@9211: 
gernotbelger@9211:         public DefaultBedHeight(final String description, final double startKm, final double endKm) {
gernotbelger@9211:             this.description = description;
gernotbelger@9211:             this.startKm = startKm;
gernotbelger@9211:             this.endKm = endKm;
gernotbelger@9211:         }
gernotbelger@9211:     }
gernotbelger@9211: 
gernotbelger@9211:     private static DefaultBedHeightsConfig INSTANCE = new DefaultBedHeightsConfig();
gernotbelger@9211: 
gernotbelger@9211:     public static synchronized Collection<DefaultBedHeight> getDefaults(final River river, final Calculation problems) {
gernotbelger@9211:         return INSTANCE.getBedHeightDefaultsForRiver(river, problems);
gernotbelger@9211:     }
gernotbelger@9211: 
gernotbelger@9211:     private final Map<String, Collection<DefaultBedHeight>> cache = new HashMap<>();
gernotbelger@9211: 
gernotbelger@9211:     private DefaultBedHeightsConfig() {
gernotbelger@9211:     }
gernotbelger@9211: 
gernotbelger@9211: 
gernotbelger@9211:     private synchronized Collection<DefaultBedHeight> getBedHeightDefaultsForRiver(final River river, final Calculation problems) {
gernotbelger@9211: 
gernotbelger@9211:         final String rivername = river.getName();
gernotbelger@9211:         if (!this.cache.containsKey(rivername)) {
gernotbelger@9211:             final Collection<DefaultBedHeight> newDefaults = loadBedHeightDefaultsForRiver(river, problems);
gernotbelger@9211:             this.cache.put(rivername, null);
gernotbelger@9211:             return newDefaults;
gernotbelger@9211:         }
gernotbelger@9211: 
gernotbelger@9211:         return this.cache.get(rivername);
gernotbelger@9211:     }
gernotbelger@9211: 
gernotbelger@9211:     private static Collection<DefaultBedHeight> loadBedHeightDefaultsForRiver(final River river, final Calculation problems) {
gernotbelger@9211: 
gernotbelger@9211:         try {
gernotbelger@9211:             final String rivername = river.getName();
gernotbelger@9211:             final String filename = String.format(CONFIG_FILE, rivername);
gernotbelger@9211: 
gernotbelger@9211:             final Properties properties = Config.loadProperties(filename);
gernotbelger@9211: 
gernotbelger@9211:             final Set<String> keys = properties.stringPropertyNames();
gernotbelger@9211: 
gernotbelger@9211:             final Collection<DefaultBedHeight> defaults = new ArrayList<>(keys.size());
gernotbelger@9211: 
gernotbelger@9211:             for (final String key : keys) {
gernotbelger@9211: 
gernotbelger@9211:                 final String value = properties.getProperty(key);
gernotbelger@9211: 
gernotbelger@9211:                 final String[] split = StringUtils.split(StringUtils.trim(value), ';');
gernotbelger@9211: 
gernotbelger@9211:                 final double startKm = Double.parseDouble(split[0]);
gernotbelger@9211:                 final double endKm = Double.parseDouble(split[1]);
gernotbelger@9211: 
gernotbelger@9211:                 defaults.add(new DefaultBedHeight(key, startKm, endKm));
gernotbelger@9211:             }
gernotbelger@9211: 
gernotbelger@9211:             return defaults;
gernotbelger@9211:         }
gernotbelger@9211:         catch (final Exception e) {
gernotbelger@9211:             e.printStackTrace();
gernotbelger@9211:             problems.addProblem("sinfo.bedheightsfinder.configfile.loaderror", CONFIG_FILE, e.getMessage());
gernotbelger@9211:             return Collections.emptyList();
gernotbelger@9211:         }
gernotbelger@9211:     }
gernotbelger@9211: }