Dépôt officiel du code source de l'ERP OpenConcerto

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2011 OpenConcerto, by ILM Informatique. All rights reserved.

 *

 * The contents of this file are subject to the terms of the GNU General Public License Version 3

 * only ("GPL"). You may not use this file except in compliance with the License. You can obtain a

 * copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific

 * language governing permissions and limitations under the License.

 *

 * When distributing the software, include this License Header Notice in each file.

 */

 package org.openconcerto.utils;

import java.io.IOException;

import java.io.OutputStream;

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.Map;

import java.util.Properties;

/**

 * Useful for defining product wide values, like version, from a property file.

 *

 * @author Sylvain

 */

public class ProductInfo {

    public static final String PROPERTIES_NAME = "/product.properties";

    public static final String ORGANIZATION_NAME = "ORGANIZATION_NAME";

    public static final String ORGANIZATION_ID = "ORGANIZATION_ID";

    public static final String NAME = "NAME";

    public static final String ID = "ID";

    public static final String VERSION = "VERSION";

    private static ProductInfo INSTANCE;

    /**

     * If {@link #setInstance(ProductInfo)} was called with a non-null value, return that ;

     * otherwise use {@link #createDefault()}.

     *

     * @return the current instance, can be <code>null</code>.

     */

    public synchronized static final ProductInfo getInstance() {

        if (INSTANCE == null) {

            try {

                setInstance(createDefault());

            } catch (final IOException e) {

                throw new IllegalStateException("unable to load default product properties", e);

            }

        }

        return INSTANCE;

    }

    /**

     * Set the current instance.

     *

     * @param i the new instance, can be <code>null</code>.

     */

    public synchronized static void setInstance(final ProductInfo i) {

        INSTANCE = i;

    }

    /**

     * Create a product info from the default properties file, {@value #PROPERTIES_NAME}.

     *

     * @return the default properties, or <code>null</code> if they couldn't be found.

     * @throws IOException if properties couldn't be loaded.

     */

    public static final ProductInfo createDefault() throws IOException {

        final Properties p = PropertiesUtils.createFromResource(ProductInfo.class, PROPERTIES_NAME);

        return p == null ? null : new ProductInfo(p);

    }

    static private final String sanitizeDomain(final String s) {

        return FileUtils.sanitize(s).replace(' ', '_');

    }

    static private final String sanitizeDomainPart(final String s) {

        return sanitizeDomain(s).replace('.', '_');

    }

    private final Properties props;

    public ProductInfo(final String name) {

        this(name, null);

    }

    public ProductInfo(final String name, final String version) {

        this(name, version, "ILM Informatique", "fr.ilm-informatique");

    }

    public ProductInfo(final String name, final String version, final String orgName, final String orgID) {

        this(CollectionUtils.createMapFromList(NAME, name, VERSION, version, ORGANIZATION_NAME, orgName, ORGANIZATION_ID, orgID));

    }

    public ProductInfo(final Map<String, String> map) {

        this(PropertiesUtils.createFromMap(map));

    }

    public ProductInfo(final Properties props) {

        if (props == null)

            throw new NullPointerException("Null properties");

        if (props.getProperty(NAME) == null)

            throw new IllegalArgumentException("Missing " + NAME);

        this.props = props;

    }

    /**

     * The properties.

     *

     * @return the associated properties.

     */

    private final Properties getProps() {

        return this.props;

    }

    public final String getProperty(final String name) {

        return this.getProps().getProperty(name);

    }

    public final String getProperty(final String name, final String def) {

        final String res = this.getProperty(name);

        return StringUtils.isEmpty(res, true) ? def : res;

    }

    public final String getOrganizationName() {

        return this.getProperty(ORGANIZATION_NAME);

    }

    // com.acme

    public final String getOrganizationID() {

        final String res = this.getProperty(ORGANIZATION_ID);

        if (res != null)

            return sanitizeDomain(res);

        final String name = this.getOrganizationName();

        if (name != null)

            return "com." + sanitizeDomainPart(this.getOrganizationName());

        return null;

    }

    // my app

    public final String getName() {

        return this.getProperty(NAME, "unnamed product");

    }

    // my_app

    public final String getID() {

        return sanitizeDomainPart(this.getProperty(ID, this.getName()));

    }

    // com.acme.my_app

    public final String getFullID() {

        final String orgID = this.getOrganizationID();

        return orgID == null ? null : orgID + '.' + this.getID();

    }

    public final String getVersion() {

        return this.getProperty(VERSION);

    }

    public final void store(final Path p) throws IOException {

        try (final OutputStream out = Files.newOutputStream(p)) {

            this.getProps().store(out, this.getClass().getName());

        }

    }

    @Override

    public String toString() {

        return this.getClass().getSimpleName() + " for " + getName() + " " + getVersion();

    }

}