/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
 * Copyright © 2017-2018 European Software Marketing Ltd.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */
package org.onap.aai.babel.xml.generator.model;

import static org.onap.aai.babel.xml.generator.data.GeneratorConstants.GENERATOR_AAI_CONFIGLPROP_NOT_FOUND;

import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import org.onap.aai.babel.xml.generator.data.ArtifactType;
import org.onap.aai.babel.xml.generator.data.GeneratorConstants;
import org.onap.aai.babel.xml.generator.data.WidgetConfigurationUtil;
import org.onap.aai.babel.xml.generator.error.IllegalAccessException;
import org.onap.aai.babel.xml.generator.types.ModelType;
import org.onap.aai.babel.xml.generator.types.ModelWidget;

public abstract class Widget extends Model {

    private Set<String> keys = new HashSet<>();

    /**
     * Gets widget.
     *
     * @param type the type
     * @return the widget
     */
    public static Widget getWidget(Type type) {

        switch (type) {
            case SERVICE:
                return new ServiceWidget();
            case VF:
                return new VfWidget();
            case VFC:
                return new VfcWidget();
            case VSERVER:
                return new VServerWidget();
            case VOLUME:
                return new VolumeWidget();
            case FLAVOR:
                return new FlavorWidget();
            case TENANT:
                return new TenantWidget();
            case VOLUME_GROUP:
                return new VolumeGroupWidget();
            case LINT:
                return new LIntfWidget();
            case L3_NET:
                return new L3NetworkWidget();
            case VFMODULE:
                return new VfModuleWidget();
            case IMAGE:
                return new ImageWidget();
            case OAM_NETWORK:
                return new OamNetwork();
            case ALLOTTED_RESOURCE:
                return new AllotedResourceWidget();
            case TUNNEL_XCONNECT:
                return new TunnelXconnectWidget();
            default:
                return null;
        }
    }

    /**
     * Gets id.
     *
     * @return the id
     */
    public String getId() {
        Properties properties = WidgetConfigurationUtil.getConfig();
        String id = properties.getProperty(ArtifactType.AAI.name() + ".model-version-id." + getName());
        if (id == null) {
            throw new IllegalArgumentException(String.format(GENERATOR_AAI_CONFIGLPROP_NOT_FOUND,
                    ArtifactType.AAI.name() + ".model-version-id." + getName()));
        }
        return id;
    }

    public ModelType getType() {
        ModelWidget widgetModel = this.getClass().getAnnotation(ModelWidget.class);
        return widgetModel.type();
    }

    public String getName() {
        ModelWidget widgetModel = this.getClass().getAnnotation(ModelWidget.class);
        return widgetModel.name();
    }

    /**
     * Get Widget Id from properties file.
     *
     * @return - Widget Id
     */
    @Override
    public String getWidgetId() {
        Properties properties = WidgetConfigurationUtil.getConfig();
        String id = properties.getProperty(ArtifactType.AAI.name() + ".model-invariant-id." + getName());
        if (id == null) {
            throw new IllegalArgumentException(String.format(GENERATOR_AAI_CONFIGLPROP_NOT_FOUND,
                    ArtifactType.AAI.name() + ".model-invariant-id." + getName()));
        }
        return id;
    }

    @Override
    public int hashCode() {
        return getId().hashCode();
    }

    @Override
    public Type getWidgetType() {
        return null;
    }

    /**
     * Equals.
     *
     * @param obj Object
     * @return the boolean
     */
    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Widget) {
            if (getId().equals(((Widget) obj).getId())) {
                ((Widget) obj).keys.addAll(this.keys);
                return true;
            }
            return false;
        } else {
            return false;
        }
    }

    public void addKey(String key) {
        this.keys.add(key);
    }

    /**
     * Member of boolean.
     *
     * @param keys the keys
     * @return the boolean
     */
    public boolean memberOf(List<String> keys) {
        if (keys == null) {
            return false;
        }
        return !Collections.disjoint(this.keys, keys);
    }

    /**
     * All instances used boolean.
     *
     * @param collection the collection
     * @return the boolean
     */
    public boolean allInstancesUsed(Set<String> collection) {
        Set<String> keyCopy = new HashSet<>(keys);
        keyCopy.removeAll(collection);
        return keyCopy.isEmpty();
    }

    @Override
    public boolean addResource(Resource resource) {
        throw new IllegalAccessException(GeneratorConstants.GENERATOR_AAI_ERROR_UNSUPPORTED_WIDGET_OPERATION);
    }

    @Override
    public boolean addWidget(Widget widget) {
        return true;
    }

    public enum Type {
        SERVICE,
        VF,
        VFC,
        VSERVER,
        VOLUME,
        FLAVOR,
        TENANT,
        VOLUME_GROUP,
        LINT,
        L3_NET,
        VFMODULE,
        IMAGE,
        OAM_NETWORK,
        ALLOTTED_RESOURCE,
        TUNNEL_XCONNECT
    }
}