client/idrepo/enduser/src/main/java/org/apache/syncope/client/enduser/layout/AnyLayoutUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.syncope.client.enduser.layout;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
import org.apache.syncope.client.enduser.SyncopeEnduserSession;
import org.apache.syncope.client.ui.commons.wizards.ModalPanelBuilder;
import org.apache.syncope.client.ui.commons.wizards.any.AnyWrapper;
import org.apache.syncope.common.lib.to.UserTO;
import org.apache.syncope.common.lib.types.AnyTypeKind;
import org.apache.wicket.PageReference;

/**
 * Utility methods for dealing with form layout information.
 */
public final class AnyLayoutUtils {

    private static final ObjectMapper MAPPER;

    private static final String DEFAULT_USER_FORM_LAYOUT_INFO;

    static {
        MAPPER = new ObjectMapper();
        try {
            DEFAULT_USER_FORM_LAYOUT_INFO = MAPPER.writeValueAsString(new UserFormLayoutInfo());
        } catch (IOException e) {
            throw new IllegalArgumentException("While generating default enduser layout info for "
                    + SyncopeEnduserSession.get().getSelfTO().getUsername(), e);
        }
    }

    public static String getDefaultValue() {
        return DEFAULT_USER_FORM_LAYOUT_INFO;
    }

    public static UserFormLayoutInfo fromJsonString(final String content) {
        try {
            return MAPPER.readValue(content, UserFormLayoutInfo.class);
        } catch (IOException e) {
            throw new IllegalArgumentException("While parsing console layout info for "
                    + SyncopeEnduserSession.get().getSelfTO().getUsername(), e);
        }
    }

    public static String defaultConsoleLayoutInfoIfEmpty(final String content) {
        String result;

        if (StringUtils.isBlank(content)) {
            try {
                ObjectNode tree = MAPPER.createObjectNode();

                tree.set(AnyTypeKind.USER.name(), MAPPER.valueToTree(new UserFormLayoutInfo()));

                result = MAPPER.writerWithDefaultPrettyPrinter().writeValueAsString(tree);
            } catch (IOException e) {
                throw new IllegalArgumentException("While generating default console layout info for "
                        + SyncopeEnduserSession.get().getSelfTO().getUsername(), e);
            }
        } else {
            try {
                result = MAPPER.writerWithDefaultPrettyPrinter().writeValueAsString(MAPPER.readTree(content));
            } catch (IOException e) {
                result = content;
            }
        }

        return result;
    }

    public static ModalPanelBuilder<AnyWrapper<UserTO>> newUserWizardBuilder(
            final UserTO userTO,
            final List<String> anyTypeClasses,
            final UserFormLayoutInfo userFormLayoutInfo,
            final PageReference pageRef) {

        try {
            return userFormLayoutInfo.getFormClass().getConstructor(
                    userTO.getClass(), // previous
                    userTO.getClass(), // actual
                    List.class,
                    userFormLayoutInfo.getClass(),
                    pageRef.getClass()).
                    newInstance(null, userTO, anyTypeClasses, userFormLayoutInfo, pageRef);

        } catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException
                | IllegalArgumentException | InvocationTargetException e) {
            throw new IllegalArgumentException(
                    "Could not instantiate " + userFormLayoutInfo.getFormClass().getName(), e);
        }
    }

    private AnyLayoutUtils() {
        // private constructor for static utility class
    }
}