/*
 * Copyright 2011 The IEC61850bean Authors
 *
 * Licensed 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 com.beanit.iec61850bean;

import com.beanit.iec61850bean.internal.mms.asn1.Data;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;

/**
 * This class represents a functionally constraint DataObject. That means it has unique reference
 * and FunctionalConstraint. A DataObject as defined in part 7-3 is made up of 1..n FcDataObjects
 * where n is the number of different FunctionalConstraints that the children of the DataObject
 * have. An FcDataObject can have children of types FcDataObject, Array, ConstructedDataAttribute or
 * BasicDataAttribute.
 *
 * @author Stefan Feuerhahn
 */
public class FcDataObject extends FcModelNode {

    private final List<FcModelNode> fcModelNodes;
    private String doType;
    private String cdc;


    public FcDataObject(ObjectReference objectReference, Fc fc, List<FcModelNode> children) {
        this.fcModelNodes = children;
        super.setDataAttributes(children);
        this.children = new LinkedHashMap<>((int) ((children.size() / 0.75) + 1));
        this.objectReference = objectReference;

        for (ModelNode child : children) {
            this.children.put(child.getReference().getName(), child);
            child.setParent(this);
        }
        this.fc = fc;
    }

    @Override
    public FcDataObject copy() {
        List<FcModelNode> childCopies = new ArrayList<>(children.size());
        for (ModelNode childNode : children.values()) {
            childCopies.add((FcModelNode) childNode.copy());
        }
        return new FcDataObject(objectReference, fc, childCopies);
    }

    @Override
    Data getMmsDataObj() {
        Data.Structure dataStructure = new Data.Structure();
        List<Data> seq = dataStructure.getData();

        for (ModelNode modelNode : getChildren()) {
            Data child = modelNode.getMmsDataObj();
            if (child == null) {
                throw new IllegalArgumentException(
                        "Unable to convert Child: " + modelNode.objectReference + " to MMS Data Object.");
            }
            seq.add(child);
        }
        if (seq.size() == 0) {
            throw new IllegalArgumentException(
                    "Converting ModelNode: "
                            + objectReference
                            + " to MMS Data Object resulted in Sequence of size zero.");
        }

        Data data = new Data();
        data.setStructure(dataStructure);

        return data;
    }

    @Override
    void setValueFromMmsDataObj(Data data) throws ServiceError {
        if (data.getStructure() == null) {
            throw new ServiceError(ServiceError.TYPE_CONFLICT, "expected type: structure");
        }
        if (data.getStructure().getData().size() != children.size()) {
            throw new ServiceError(
                    ServiceError.TYPE_CONFLICT,
                    "expected type: structure with " + children.size() + " elements");
        }

        Iterator<Data> iterator = data.getStructure().getData().iterator();
        for (ModelNode child : children.values()) {
            child.setValueFromMmsDataObj(iterator.next());
        }
    }

    public String getDoType() {
        return doType;
    }

    public void setDoType(String doType) {
        this.doType = doType;
    }

    public String getCdc() {
        return cdc;
    }

    public void setCdc(String cdc) {
        this.cdc = cdc;
    }
}
