org.fenixedu.cms.domain.CMSTheme.java Source code

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Here is the source code for org.fenixedu.cms.domain.CMSTheme.java

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/**
 * Copyright  2014 Instituto Superior Tcnico
 *
 * This file is part of FenixEdu CMS.
 *
 * FenixEdu CMS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * FenixEdu CMS is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with FenixEdu CMS.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.fenixedu.cms.domain;

import static java.util.stream.Collectors.toSet;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Set;
import java.util.function.Predicate;

import org.fenixedu.bennu.core.domain.Bennu;
import org.fenixedu.bennu.core.domain.User;
import org.fenixedu.bennu.core.security.Authenticate;
import org.fenixedu.bennu.core.util.CoreConfiguration;
import org.fenixedu.cms.CMSConfigurationManager;
import org.joda.time.DateTime;

import pt.ist.fenixframework.Atomic;
import pt.ist.fenixframework.Atomic.TxMode;

import com.google.common.collect.Sets;
import com.google.common.io.ByteStreams;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

public class CMSTheme extends CMSTheme_Base {

    /**
     * The logged {@link User} creates a new instance of a {@link CMSTheme}
     */
    public CMSTheme() {
        this.setCreatedBy(Authenticate.getUser());
        this.setCreationDate(new DateTime());
    }

    /**
     * Searches for a {@link CMSTheme} with a given type.
     * 
     * @param t
     *            the type of the wanted {@link CMSTheme}.
     * @return
     *         the {@link CMSTheme} with the given type if it exists, or null otherwise.
     */
    public static CMSTheme forType(String t) {
        for (CMSTheme theme : Bennu.getInstance().getCMSThemesSet()) {
            if (theme.getType().equals(t)) {
                return theme;
            }
        }
        return null;
    }

    /**
     * Searches for a {@link CMSTemplate} with a given type on this theme.
     * 
     * @param t
     *            the type of the wanted {@link CMSTemplate}.
     * @return
     *         the {@link CMSTemplate} with the given type if it exists, or null otherwise.
     */
    public CMSTemplate templateForType(String type) {
        CMSTemplate found = getTemplatesSet().stream().filter(template -> template.getType().equals(type))
                .findFirst().orElse(null);
        if (found == null && getExtended() != null) {
            return getExtended().templateForType(type);
        } else {
            return found;
        }
    }

    /**
     * Searches for a {@link CMSThemeFile} with a given name on this theme.
     * 
     * @param path
     *            the displayName of the wanted {@link CMSThemeFile}.
     * @return
     *         the {@link CMSThemeFile} with the given displayName if it exists, or null otherwise.
     */
    public CMSThemeFile fileForPath(String path) {
        CMSThemeFile file = getFiles().getFileForPath(path);
        if (file == null && getExtended() != null) {
            return getExtended().fileForPath(path);
        } else {
            return file;
        }
    }

    private static String getTypeForThemeFolder(String path) {
        try {
            FileInputStream fin = new FileInputStream(path + "/theme.json");
            JsonObject el = new JsonParser().parse(new BufferedReader(new InputStreamReader(fin)))
                    .getAsJsonObject();
            return el.get("type").getAsString();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return null;
        }
    }

    public byte[] contentForPath(String t) {
        String themeDevelopmentDirectory = CMSConfigurationManager.getConfiguration().themeDevelopmentDirectory();
        if (CoreConfiguration.getConfiguration().developmentMode()
                && CMSConfigurationManager.isInThemeDevelopmentMode()
                && this.getType().equals(getTypeForThemeFolder(themeDevelopmentDirectory))) {
            try {
                return ByteStreams.toByteArray(new FileInputStream(themeDevelopmentDirectory + t));
            } catch (FileNotFoundException e) {
                if (this.getExtended() != null) {
                    return this.getExtended().contentForPath(t);
                } else {
                    return null;
                }
            } catch (IOException e) {
                return null;
            }
        } else {
            CMSThemeFile file = this.fileForPath(t);
            return file == null ? null : file.getContent();
        }
    }

    public boolean definesPath(String string) {
        // FIXME Find a better way to do this!
        return contentForPath(string) != null;
    }

    /**
     * 
     * @return true if this is the default theme for the CMS, and false otherwise.
     */
    public boolean isDefault() {
        return Bennu.getInstance().getDefaultCMSTheme() == this;
    }

    @Atomic(mode = TxMode.WRITE)
    public void delete() {
        if (this.getChildrenSet().size() != 0) {
            throw new RuntimeException("Themes depend of this theme. Can't delete");
        }

        for (Site site : getSitesSet()) {
            site.setTheme(null);
        }
        this.setPrimaryBennu(null);
        this.setBennu(null);

        if (Bennu.getInstance().getCMSThemesSet().size() == 0) {
            Bennu.getInstance().setDefaultCMSTheme(null);
        } else {
            Bennu.getInstance().setDefaultCMSTheme(Bennu.getInstance().getCMSThemesSet().iterator().next());
        }

        this.setCreatedBy(null);
        this.setExtended(null);

        for (CMSTemplate template : this.getTemplatesSet()) {
            template.delete();
        }

        this.deleteDomainObject();

    }

    public String getAssetsPath() {
        return CoreConfiguration.getConfiguration().applicationUrl() + "/cms/assets/" + getType() + "/"
                + getFiles().getChecksum();
    }

    @Atomic
    public void changeFiles(CMSThemeFiles files) {
        if (getFiles() == null || !getFiles().checksumMatches(files)) {
            setFiles(files);
        }
    }

    public Set<CMSTemplate> getAllTemplates() {
        return Sets.union(getTemplatesSet(), getExtendedTemplates());
    }

    public Set<CMSTemplate> getExtendedTemplates() {
        if (getExtended() != null) {
            Set<String> myTemplateTypes = getTemplatesSet().stream().map(CMSTemplate::getType).collect(toSet());
            Predicate<CMSTemplate> isInherited = parentTemplate -> myTemplateTypes
                    .contains(parentTemplate.getType());
            return getExtended().getAllTemplates().stream().filter(isInherited.negate()).collect(toSet());
        } else {
            return Sets.newHashSet();
        }
    }

}