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package org.umlg.runtime.util;

import com.google.common.base.Preconditions;
import org.apache.commons.configuration2.Configuration;
import org.apache.commons.configuration2.FileBasedConfiguration;
import org.apache.commons.configuration2.PropertiesConfiguration;
import org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder;
import org.apache.commons.configuration2.builder.fluent.Configurations;
import org.apache.commons.configuration2.builder.fluent.Parameters;
import org.apache.commons.configuration2.convert.DefaultListDelimiterHandler;

import java.io.File;
import java.net.URL;

/**
 * Date: 2013/01/02
 * Time: 3:08 PM
 */
public class UmlgProperties {

    public static UmlgProperties INSTANCE = new UmlgProperties();
    private final Configuration properties;
    private final Configuration internalProperties;

    private UmlgProperties() {
        try {
            URL url = Thread.currentThread().getContextClassLoader().getResource("umlg.env.properties");
            Preconditions.checkState(url != null, "Did not find 'umlg.env.properties' on the class path.");
            Parameters params = new Parameters();
            FileBasedConfigurationBuilder builder = new FileBasedConfigurationBuilder(PropertiesConfiguration.class)
                            .configure(params.properties()
                                    .setFileName("umlg.env.properties").setListDelimiterHandler(new DefaultListDelimiterHandler(',')));
            this.properties = builder.getConfiguration();
        } catch (Exception e) {
            throw new RuntimeException("Expecting \"umlg.env.properties\" file on the classpath with ");
        }
        try {
            URL url = Thread.currentThread().getContextClassLoader().getResource("umlg.internal.properties");
            Preconditions.checkState(url != null, "Did not find 'umlg.internal.properties' on the class path.");
            Parameters params = new Parameters();
            FileBasedConfigurationBuilder builder = new FileBasedConfigurationBuilder(PropertiesConfiguration.class)
                    .configure(params.properties()
                            .setFileName("umlg.internal.properties").setListDelimiterHandler(new DefaultListDelimiterHandler(',')));
            this.internalProperties = builder.getConfiguration();
        } catch (Exception e) {
            throw new RuntimeException("Expecting \"umlg.internal.properties\" file on the classpath with ");
        }
        try {
            PropertiesConfiguration overrideProperties = null;
            if (isDistribution() && Thread.currentThread().getContextClassLoader().getResource("WEB-INF/web.xml") != null) {
                //own assembly
                File f = new File("../resources/" + this.properties.getProperty("umlg.model.file.name") + ".umlg.env.properties");
                Configurations configs = new Configurations();
                overrideProperties = configs.properties(f.getAbsolutePath());
            } else if (isWebContainer()) {
                //tomcat or glasfish or jetty
                Configurations configs = new Configurations();
                overrideProperties = configs.properties(new File(this.properties.getProperty("umlg.model.file.name") + ".umlg.env.properties"));
            }
            if (overrideProperties != null) {
//                overrideProperties.setReloadingStrategy(new FileChangedReloadingStrategy());
//                this.properties.addConfiguration(overrideProperties);
            }
        } catch (Exception e) {
            throw new RuntimeException("Could not find " + "../resources/" + this.properties.getProperty("model.name") + ".umlg.env.properties");
        }
    }

//    public CompositeConfiguration getProperties() {
//        return properties;
//    }

    private boolean isDistribution() {
        return Boolean.valueOf(System.getProperty("UMLGServerDistribution", "false"));
    }

    private boolean isWebContainer() {
        return false;
    }

    public String getUmlgDbRootLocation() {
        return this.properties.getString("umlg.db.location", System.getProperty("java.io.tmpdir"));
    }

    public boolean getCreatedOnUpdatedOnInit() {
        return this.properties.getBoolean("createdon.updatedon.init", true);
    }

    public String getModelFileName() {
        return this.properties.getString("umlg.model.file.name");
    }

    public String getModelJavaName() {
        return this.internalProperties.getString("model.java.name");
    }

    public String getUmlgDbLocation() {
        return this.getUmlgDbRootLocation() + "/" + this.getModelFileName();
    }

    public boolean isStartAdminApplication() {
        return this.properties.getBoolean("start.admin.application", false);
    }

    public boolean isClearDbOnStartUp() {
        return this.properties.getBoolean("start.clear.db", false);
    }

    public boolean isCreateDefaultData() {
        return this.properties.getBoolean("create.default.data", false);
    }

    public String getDefaultDataLoaderClass() {
        return this.properties.getString("default.data.class");
    }

    public boolean isLoadUiResourcesFromFile() {
        return this.properties.getBoolean("umlg.ui.from.file", false);
    }

    public String getWebserverIp() {
        return this.properties.getString("webserver.ip", "127.0.0.1");
    }

    public int getWebserverPort() {
        return this.properties.getInteger("webserver.port", 8080);
    }

    public String[] getSqlgPropertiesLocation() {
        return this.properties.getStringArray("sqlg.properties.location");
    }

}