/*-
 * ============LICENSE_START=======================================================
 * SDC
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * 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.openecomp.sdc.be.components.impl;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
import fj.data.Either;
import org.apache.commons.lang3.StringEscapeUtils;
import org.openecomp.sdc.be.datatypes.elements.SchemaDefinition;
import org.openecomp.sdc.be.model.HeatParameterDefinition;
import org.openecomp.sdc.be.model.InputDefinition;
import org.openecomp.sdc.be.model.LifecycleStateEnum;
import org.openecomp.sdc.be.model.PropertyConstraint;
import org.openecomp.sdc.be.model.PropertyDefinition;
import org.openecomp.sdc.be.model.heat.HeatParameterType;
import org.openecomp.sdc.be.model.operations.impl.PropertyOperation.PropertyConstraintDeserialiser;
import org.openecomp.sdc.be.model.tosca.ToscaPropertyType;
import org.openecomp.sdc.common.api.ArtifactTypeEnum;
import org.springframework.beans.factory.config.YamlProcessor;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;
import org.yaml.snakeyaml.nodes.Tag;
import org.yaml.snakeyaml.representer.Representer;
import org.yaml.snakeyaml.resolver.Resolver;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.function.Consumer;
import java.util.function.Function;

public final class ImportUtils {
    private ImportUtils() {

    }

    private static CustomResolver customResolver = new CustomResolver();
    private static Yaml STRICT_MAPPING_YAML_LOADER =  new YamlLoader().getStrictYamlLoader();

    private static class CustomResolver extends Resolver {
        @Override
        protected void addImplicitResolvers() {
            // avoid implicit resolvers for strings that can be interpreted as boolean values
            addImplicitResolver(Tag.STR, EMPTY, "");
            addImplicitResolver(Tag.STR, NULL, null);
            addImplicitResolver(Tag.NULL, NULL, "~nN\0");
            addImplicitResolver(Tag.NULL, EMPTY, null);
            addImplicitResolver(Tag.INT, INT, "-+0123456789");
            addImplicitResolver(Tag.FLOAT, FLOAT, "-+0123456789.");
            addImplicitResolver(Tag.YAML, YAML, "!&*");
        }
    }


    private static void buildMap(Map<String, Object> output, Map<String, Object> map) {
        for (Entry<String, Object> entry : map.entrySet()) {
            String key = entry.getKey();
            Object value = entry.getValue();
            if (value instanceof Map) {
                Map<String, Object> result = new LinkedHashMap<>();
                buildMap(result, (Map) value);
                output.put(key, result);
            }
            else if (value instanceof Collection) {
                Map<String, Object> result = new LinkedHashMap<>();
                int i = 0;
                for(Object item : (Collection<Object>) value) {
                    buildMap(result, Collections.singletonMap("[" + (i++) + "]", item));
                }
                output.put(key, new ArrayList<>(result.values()));
            }
            else {
                output.put(key, value);
            }
        }
    }

    public static Map<String, Object> loadYamlAsStrictMap(String content){
        Map<String, Object> result = new LinkedHashMap<>();
        Object map = STRICT_MAPPING_YAML_LOADER.load(content);
        buildMap(result, (Map<String, Object>)map);
        return result;
    }

    private static class YamlLoader extends YamlProcessor {
        public Yaml getStrictYamlLoader() {
            return createYaml();
        }
    }

    @SuppressWarnings("unchecked")
    public static Either<List<HeatParameterDefinition>, ResultStatusEnum> getHeatParamsWithoutImplicitTypes(String heatDecodedPayload, String artifactType) {
        Map<String, Object> heatData = (Map<String, Object>) new Yaml(new Constructor(), new Representer(), new DumperOptions(), customResolver).load(heatDecodedPayload);
        return getHeatParameters(heatData, artifactType);
    }

    public static class Constants {

        public static final String FIRST_CERTIFIED_VERSION_VERSION = "1.0";
        public static final String FIRST_NON_CERTIFIED_VERSION = "0.1";
        public static final String VENDOR_NAME = "ATT (Tosca)";
        public static final String VENDOR_RELEASE = "1.0.0.wd03";
        public static final LifecycleStateEnum NORMATIVE_TYPE_LIFE_CYCLE = LifecycleStateEnum.CERTIFIED;
        public static final LifecycleStateEnum NORMATIVE_TYPE_LIFE_CYCLE_NOT_CERTIFIED_CHECKOUT = LifecycleStateEnum.NOT_CERTIFIED_CHECKOUT;
        public static final boolean NORMATIVE_TYPE_HIGHEST_VERSION = true;
        public static final String ABSTRACT_CATEGORY_NAME = "Generic";
        public static final String ABSTRACT_SUBCATEGORY = "Abstract";
        public static final String DEFAULT_ICON = "defaulticon";
        public static final String INNER_VFC_DESCRIPTION = "Not reusable inner VFC";
        public static final String USER_DEFINED_RESOURCE_NAMESPACE_PREFIX = "org.openecomp.resource.";
        public static final String UI_JSON_PAYLOAD_NAME = "payloadName";
        public static final String CVFC_DESCRIPTION = "Complex node type that is used as nested type in VF";
    }

    public enum ResultStatusEnum {
        ELEMENT_NOT_FOUND, GENERAL_ERROR, OK, INVALID_PROPERTY_DEFAULT_VALUE, INVALID_PROPERTY_TYPE, INVALID_PROPERTY_VALUE, MISSING_ENTRY_SCHEMA_TYPE, INVALID_PROPERTY_NAME
    }

    public enum ToscaElementTypeEnum {
        BOOLEAN, STRING, MAP, LIST, ALL
    }

    public enum ToscaTagNamesEnum {
        DERIVED_FROM("derived_from"), IS_PASSWORD("is_password"),
        // Properties
        PROPERTIES("properties"), TYPE("type"), STATUS("status"), ENTRY_SCHEMA("entry_schema"), REQUIRED("required"), DESCRIPTION("description"), DEFAULT_VALUE("default"), VALUE("value"), CONSTRAINTS("constraints"),
        // Group Types
        MEMBERS("members"), METADATA("metadata"),
        // Policy Types
        TARGETS("targets"),
        // Capabilities
        CAPABILITIES("capabilities"), VALID_SOURCE_TYPES("valid_source_types"),
        // Requirements
        REQUIREMENTS("requirements"), NODE("node"), RELATIONSHIP("relationship"), CAPABILITY("capability"), INTERFACES("interfaces"),
        // Heat env Validation
        PARAMETERS("parameters"),
        // Import Validations
        TOSCA_VERSION("tosca_definitions_version"), TOPOLOGY_TEMPLATE("topology_template"), NODE_TYPES("node_types"), OCCURRENCES("occurrences"), NODE_TEMPLATES("node_templates"), GROUPS("groups"), INPUTS("inputs"),
        SUBSTITUTION_MAPPINGS("substitution_mappings"),  NODE_TYPE("node_type"),
        // Attributes
        ATTRIBUTES("attributes"), LABEL("label"), HIDDEN("hidden"), IMMUTABLE("immutable"), GET_INPUT("get_input");

        private String elementName;

        private ToscaTagNamesEnum(String elementName) {
            this.elementName = elementName;
        }

        public String getElementName() {
            return elementName;
        }
    }

    @SuppressWarnings("unchecked")
    private static void handleElementNameNotFound(String elementName, Object elementValue, ToscaElementTypeEnum elementType, List<Object> returnedList) {
        if (elementValue instanceof Map) {
            ImportUtils.findToscaElements((Map<String, Object>) elementValue, elementName, elementType, returnedList);
        } else if (elementValue instanceof List) {
            ImportUtils.findAllToscaElementsInList((List<Object>) elementValue, elementName, elementType, returnedList);
        }
    }

    @SuppressWarnings("unchecked")
    private static void handleElementNameFound(String elementName, ToscaElementTypeEnum elementType, List<Object> returnedList, Object elementValue) {

        if (elementValue instanceof Boolean) {
            if (elementType == ToscaElementTypeEnum.BOOLEAN || elementType == ToscaElementTypeEnum.ALL) {
                returnedList.add(elementValue);
            }
        }

        else if (elementValue instanceof String) {
            if (elementType == ToscaElementTypeEnum.STRING || elementType == ToscaElementTypeEnum.ALL) {
                returnedList.add(elementValue);
            }
        } else if (elementValue instanceof Map) {
            if (elementType == ToscaElementTypeEnum.MAP || elementType == ToscaElementTypeEnum.ALL) {
                returnedList.add(elementValue);
            }
            ImportUtils.findToscaElements((Map<String, Object>) elementValue, elementName, elementType, returnedList);

        } else if (elementValue instanceof List) {
            if (elementType == ToscaElementTypeEnum.LIST || elementType == ToscaElementTypeEnum.ALL) {
                returnedList.add(elementValue);
            }
            ImportUtils.findAllToscaElementsInList((List<Object>) elementValue, elementName, elementType, returnedList);

        }
        // For Integer, Double etc...
        else if (elementType == ToscaElementTypeEnum.ALL) {
            if (elementValue != null) {
                returnedList.add(String.valueOf(elementValue));
            }
        }
    }

    private static void findAllToscaElementsInList(List<Object> list, String elementName, ToscaElementTypeEnum elementType, List<Object> returnedList) {
        Iterator<Object> listItr = list.iterator();
        while (listItr.hasNext()) {
            Object elementValue = listItr.next();
            handleElementNameNotFound(elementName, elementValue, elementType, returnedList);
        }

    }

    public static Either<Object, ResultStatusEnum> findToscaElement(Map<String, Object> toscaJson, ToscaTagNamesEnum elementName, ToscaElementTypeEnum elementType) {
        List<Object> foundElements = new ArrayList<>();
        Either<Object, ResultStatusEnum> returnedElement = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        ImportUtils.findToscaElements(toscaJson, elementName.getElementName(), elementType, foundElements);
        if (foundElements.size() > 0) {
            returnedElement = Either.left(foundElements.get(0));
        }
        return returnedElement;

    }

    /**
     * Recursively searches for all tosca elements with key equals to elementName and value equals to elementType. <br>
     * Returns Either element with:<br>
     * List with all value if values found<br>
     * Or ELEMENT_NOT_FOUND ActionStatus
     *
     * @param toscaJson
     * @param toscaTagName
     * @return
     */
    public static Either<List<Object>, ResultStatusEnum> findToscaElements(Map<String, Object> toscaJson, String elementName, ToscaElementTypeEnum elementType, List<Object> returnedList) {
        Either<List<Object>, ResultStatusEnum> returnedElement = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        String skipKey = null;
        if (toscaJson.containsKey(elementName)) {
            Object elementValue = toscaJson.get(elementName);
            handleElementNameFound(elementName, elementType, returnedList, elementValue);
            skipKey = elementName;
        }

        Iterator<Entry<String, Object>> keyValItr = toscaJson.entrySet().iterator();
        while (keyValItr.hasNext()) {
            Entry<String, Object> keyValEntry = keyValItr.next();
            if (!String.valueOf(keyValEntry.getKey()).equals(skipKey)) {
                handleElementNameNotFound(elementName, keyValEntry.getValue(), elementType, returnedList);
            }
        }

        if (returnedList.size() > 0) {
            returnedElement = Either.left(returnedList);
        }

        return returnedElement;
    }

    @SuppressWarnings("unchecked")
    public static <T> Either<List<T>, ResultStatusEnum> findFirstToscaListElement(Map<String, Object> toscaJson, ToscaTagNamesEnum toscaTagName) {
        Either<List<T>, ResultStatusEnum> returnedElement = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        Either<Object, ResultStatusEnum> findFirstToscaElement = findToscaElement(toscaJson, toscaTagName, ToscaElementTypeEnum.LIST);
        if (findFirstToscaElement.isLeft()) {
            returnedElement = Either.left((List<T>) findFirstToscaElement.left().value());
        }
        return returnedElement;

    }

    @SuppressWarnings("unchecked")
    public static <T> Either<Map<String, T>, ResultStatusEnum> findFirstToscaMapElement(Map<String, Object> toscaJson, ToscaTagNamesEnum toscaTagName) {
        Either<Map<String, T>, ResultStatusEnum> returnedElement = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        Either<Object, ResultStatusEnum> findFirstToscaElement = findToscaElement(toscaJson, toscaTagName, ToscaElementTypeEnum.MAP);
        if (findFirstToscaElement.isLeft()) {
            returnedElement = Either.left((Map<String, T>) findFirstToscaElement.left().value());
        }
        return returnedElement;

    }

    public static Either<String, ResultStatusEnum> findFirstToscaStringElement(Map<String, Object> toscaJson, ToscaTagNamesEnum toscaTagName) {
        Either<String, ResultStatusEnum> returnedElement = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        Either<Object, ResultStatusEnum> findFirstToscaElements = findToscaElement(toscaJson, toscaTagName, ToscaElementTypeEnum.STRING);
        if (findFirstToscaElements.isLeft()) {
            returnedElement = Either.left((String) findFirstToscaElements.left().value());
        }
        return returnedElement;
    }

    /**
     * searches for first Tosca in Json map (toscaJson) boolean element by name (toscaTagName) returns found element or ELEMENT_NOT_FOUND status
     *
     * @param toscaJson
     * @param toscaTagName
     * @return
     */
    public static Either<String, ResultStatusEnum> findFirstToscaBooleanElement(Map<String, Object> toscaJson, ToscaTagNamesEnum toscaTagName) {
        Either<String, ResultStatusEnum> returnedElement = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        Either<Object, ResultStatusEnum> findFirstToscaElements = findToscaElement(toscaJson, toscaTagName, ToscaElementTypeEnum.BOOLEAN);
        if (findFirstToscaElements.isLeft()) {
            returnedElement = Either.left(String.valueOf(findFirstToscaElements.left().value()));
        }
        return returnedElement;
    }

    private static void setPropertyConstraints(Map<String, Object> propertyValue, PropertyDefinition property) {
        Either<List<Object>, ResultStatusEnum> propertyFieldconstraints = findFirstToscaListElement(propertyValue, ToscaTagNamesEnum.CONSTRAINTS);
        if (propertyFieldconstraints.isLeft()) {
            List<Object> jsonConstraintList = propertyFieldconstraints.left().value();

            List<PropertyConstraint> constraintList = new ArrayList<>();
            Type constraintType = new TypeToken<PropertyConstraint>() {
            }.getType();
            Gson gson = new GsonBuilder().registerTypeAdapter(constraintType, new PropertyConstraintDeserialiser()).create();

            for (Object constraintJson : jsonConstraintList) {
                PropertyConstraint propertyConstraint = gson.fromJson(gson.toJson(constraintJson), constraintType);
                constraintList.add(propertyConstraint);
            }
            property.setConstraints(constraintList);
        }
    }

    public static PropertyDefinition createModuleProperty(Map<String, Object> propertyValue) {

        PropertyDefinition propertyDef = new PropertyDefinition();
        ImportUtils.setField(propertyValue, ToscaTagNamesEnum.TYPE, type -> propertyDef.setType(type));
        ImportUtils.setPropertyFieldRequired(propertyValue, propertyDef);
        ImportUtils.setField(propertyValue, ToscaTagNamesEnum.DESCRIPTION, desc -> propertyDef.setDescription(desc));

        Either<Object, ResultStatusEnum> findToscaElement = ImportUtils.findToscaElement(propertyValue, ToscaTagNamesEnum.DEFAULT_VALUE, ToscaElementTypeEnum.ALL);
        if (findToscaElement.isLeft()) {
            String propertyJsonStringValue = getPropertyJsonStringValue(findToscaElement.left().value(), propertyDef.getType());
            propertyDef.setDefaultValue(propertyJsonStringValue);
        }
        ImportUtils.setField(propertyValue, ToscaTagNamesEnum.IS_PASSWORD, pass -> propertyDef.setPassword(Boolean.parseBoolean(pass)));
        ImportUtils.setField(propertyValue, ToscaTagNamesEnum.STATUS, status -> propertyDef.setStatus(status));
        ImportUtils.setPropertyScheme(propertyValue, propertyDef);
        ImportUtils.setPropertyConstraints(propertyValue, propertyDef);

        return propertyDef;
    }

    public static InputDefinition createModuleInput(Map<String, Object> inputValue) {

        InputDefinition inputDef = new InputDefinition();
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.TYPE, type -> inputDef.setType(type));
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.REQUIRED, req -> inputDef.setRequired(Boolean.parseBoolean(req)));
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.DESCRIPTION, desc -> inputDef.setDescription(desc));

        Either<Object, ResultStatusEnum> findToscaElement = ImportUtils.findToscaElement(inputValue, ToscaTagNamesEnum.DEFAULT_VALUE, ToscaElementTypeEnum.ALL);
        if (findToscaElement.isLeft()) {
            String propertyJsonStringValue = getPropertyJsonStringValue(findToscaElement.left().value(), inputDef.getType());
            inputDef.setDefaultValue(propertyJsonStringValue);
        }
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.IS_PASSWORD, pass -> inputDef.setPassword(Boolean.parseBoolean(pass)));
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.STATUS, status -> inputDef.setStatus(status));
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.LABEL, label -> inputDef.setLabel(label));
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.HIDDEN, hidden -> inputDef.setHidden(Boolean.parseBoolean(hidden)));
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.HIDDEN, immutable -> inputDef.setImmutable(Boolean.parseBoolean(immutable)));
        ImportUtils.setField(inputValue, ToscaTagNamesEnum.LABEL, label -> inputDef.setLabel(label));
        ImportUtils.setPropertyScheme(inputValue, inputDef);
        ImportUtils.setPropertyConstraints(inputValue, inputDef);

        return inputDef;
    }

    public static PropertyDefinition createModuleAttribute(Map<String, Object> attributeMap) {

        PropertyDefinition attributeDef = new PropertyDefinition();
        ImportUtils.setField(attributeMap, ToscaTagNamesEnum.TYPE, type -> attributeDef.setType(type));
        ImportUtils.setField(attributeMap, ToscaTagNamesEnum.DESCRIPTION, desc -> attributeDef.setDescription(desc));
        ImportUtils.setField(attributeMap, ToscaTagNamesEnum.STATUS, status -> attributeDef.setStatus(status));
        Either<Object, ResultStatusEnum> eitherDefaultValue = ImportUtils.findToscaElement(attributeMap, ToscaTagNamesEnum.DEFAULT_VALUE, ToscaElementTypeEnum.ALL);
        if (eitherDefaultValue.isLeft()) {
            String attributeDefaultValue = getPropertyJsonStringValue(eitherDefaultValue.left().value(), attributeDef.getType());
            attributeDef.setDefaultValue(attributeDefaultValue);
        }
        Either<Object, ResultStatusEnum> eitherValue = ImportUtils.findToscaElement(attributeMap, ToscaTagNamesEnum.VALUE, ToscaElementTypeEnum.ALL);
        if (eitherValue.isLeft()) {
            String attributeValue = getPropertyJsonStringValue(eitherValue.left().value(), attributeDef.getType());
            attributeDef.setValue(attributeValue);
        }
        ImportUtils.setAttributeScheme(attributeMap, attributeDef);
        return attributeDef;
    }

    private static void setPropertyScheme(Map<String, Object> propertyValue, PropertyDefinition propertyDefinition) {
        Either<SchemaDefinition, ResultStatusEnum> eitherSchema = getSchema(propertyValue);
        if (eitherSchema.isLeft()) {
            SchemaDefinition schemaDef = new SchemaDefinition();
            schemaDef.setProperty(eitherSchema.left().value().getProperty());
            propertyDefinition.setSchema(schemaDef);
        }

    }

    private static void setAttributeScheme(Map<String, Object> propertyValue, PropertyDefinition propertyDefinition) {
        Either<SchemaDefinition, ResultStatusEnum> eitherSchema = getSchema(propertyValue);
        if (eitherSchema.isLeft()) {
            SchemaDefinition schemaDef = new SchemaDefinition();
            schemaDef.setProperty(eitherSchema.left().value().getProperty());
            propertyDefinition.setSchema(schemaDef);
        }

    }

    private static Either<SchemaDefinition, ResultStatusEnum> getSchema(Map<String, Object> propertyValue) {
        Either<SchemaDefinition, ResultStatusEnum> result = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        Either<Object, ResultStatusEnum> propertyFieldEntryScheme = findToscaElement(propertyValue, ToscaTagNamesEnum.ENTRY_SCHEMA, ToscaElementTypeEnum.ALL);
        if (propertyFieldEntryScheme.isLeft()) {
            if (propertyFieldEntryScheme.left().value() instanceof String) {
                String schemaType = (String) propertyFieldEntryScheme.left().value();
                SchemaDefinition schema = new SchemaDefinition();
                PropertyDefinition schemeProperty = new PropertyDefinition();
                schemeProperty.setType(schemaType);
                schema.setProperty(schemeProperty);
                result = Either.left(schema);

            } else if (propertyFieldEntryScheme.left().value() instanceof Map) {
                PropertyDefinition schemeProperty = createModuleProperty((Map<String, Object>) propertyFieldEntryScheme.left().value());
                SchemaDefinition schema = new SchemaDefinition();
                schema.setProperty(schemeProperty);
                result = Either.left(schema);

            }

        }
        return result;
    }

    public static void setField(Map<String, Object> toscaJson, ToscaTagNamesEnum tagName, Consumer<String> setter) {
        Either<String, ResultStatusEnum> fieldStringValue = findFirstToscaStringElement(toscaJson, tagName);
        if (fieldStringValue.isLeft()) {
            setter.accept(fieldStringValue.left().value());
        }

    }

    private static void setPropertyFieldRequired(Map<String, Object> propertyValue, PropertyDefinition dataDefinition) {
        Either<String, ResultStatusEnum> propertyFieldRequired = findFirstToscaBooleanElement(propertyValue, ToscaTagNamesEnum.REQUIRED);
        if (propertyFieldRequired.isLeft()) {
            dataDefinition.setRequired(Boolean.parseBoolean(propertyFieldRequired.left().value()));
        }
    }

    public static Either<Map<String, PropertyDefinition>, ResultStatusEnum> getProperties(Map<String, Object> toscaJson) {
        Function<String, PropertyDefinition> elementGenByName = elementName -> createProperties(elementName);
        Function<Map<String, Object>, PropertyDefinition> func = map -> createModuleProperty(map);

        return getElements(toscaJson, ToscaTagNamesEnum.PROPERTIES, elementGenByName, func);

    }

    public static Either<Map<String, InputDefinition>, ResultStatusEnum> getInputs(Map<String, Object> toscaJson) {
        Function<String, InputDefinition> elementGenByName = elementName -> createInputs(elementName);
        Function<Map<String, Object>, InputDefinition> func = map -> createModuleInput(map);

        return getElements(toscaJson, ToscaTagNamesEnum.INPUTS, elementGenByName, func);

    }

    public static Either<Map<String, PropertyDefinition>, ResultStatusEnum> getAttributes(Map<String, Object> toscaJson) {
        Function<String, PropertyDefinition> elementGenByName = elementName -> createAttribute(elementName);
        Function<Map<String, Object>, PropertyDefinition> func = map -> createModuleAttribute(map);

        return getElements(toscaJson, ToscaTagNamesEnum.ATTRIBUTES, elementGenByName, func);
    }

    public static <ElementDefinition> Either<Map<String, ElementDefinition>, ResultStatusEnum> getElements(Map<String, Object> toscaJson, ToscaTagNamesEnum elementTagName, Function<String, ElementDefinition> elementGenByName,
            Function<Map<String, Object>, ElementDefinition> func) {
        Either<Map<String, ElementDefinition>, ResultStatusEnum> eitherResult = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        Either<Map<String, Object>, ResultStatusEnum> toscaAttributes = findFirstToscaMapElement(toscaJson, elementTagName);
        if (toscaAttributes.isLeft()) {
            Map<String, Object> jsonAttributes = toscaAttributes.left().value();
            Map<String, ElementDefinition> moduleAttributes = new HashMap<>();
            Iterator<Entry<String, Object>> propertiesNameValue = jsonAttributes.entrySet().iterator();
            while (propertiesNameValue.hasNext()) {
                Entry<String, Object> attributeNameValue = propertiesNameValue.next();
                if (attributeNameValue.getValue() instanceof Map) {
                    @SuppressWarnings("unchecked")
                    ElementDefinition attribute = func.apply((Map<String, Object>) attributeNameValue.getValue());
                    moduleAttributes.put(String.valueOf(attributeNameValue.getKey()), attribute);
                } else {

                    ElementDefinition element = elementGenByName.apply(String.valueOf(attributeNameValue.getValue()));

                    moduleAttributes.put(String.valueOf(attributeNameValue.getKey()), element);
                }

            }

            if (moduleAttributes.size() > 0) {
                eitherResult = Either.left(moduleAttributes);
            }

        }
        return eitherResult;

    }

    private static PropertyDefinition createAttribute(String name) {
        PropertyDefinition attribute = new PropertyDefinition();

        attribute.setName(name);
        return attribute;
    }

    private static PropertyDefinition createProperties(String name) {
        PropertyDefinition property = new PropertyDefinition();
        property.setDefaultValue(name);
        property.setName(name);
        return property;
    }

    private static InputDefinition createInputs(String name) {
        InputDefinition input = new InputDefinition();

        input.setName(name);
        return input;
    }

    public static Either<List<HeatParameterDefinition>, ResultStatusEnum> getHeatParameters(Map<String, Object> heatData, String artifactType) {

        Either<List<HeatParameterDefinition>, ResultStatusEnum> eitherResult = Either.right(ResultStatusEnum.ELEMENT_NOT_FOUND);
        Either<Map<String, Object>, ResultStatusEnum> toscaProperties = findFirstToscaMapElement(heatData, ToscaTagNamesEnum.PARAMETERS);
        if (toscaProperties.isLeft()) {
            Map<String, Object> jsonProperties = toscaProperties.left().value();
            List<HeatParameterDefinition> moduleProperties = new ArrayList<>();
            Iterator<Entry<String, Object>> propertiesNameValue = jsonProperties.entrySet().iterator();
            while (propertiesNameValue.hasNext()) {
                Entry<String, Object> propertyNameValue = propertiesNameValue.next();
                if (propertyNameValue.getValue() instanceof Map || propertyNameValue.getValue() instanceof List) {
                    if (!artifactType.equals(ArtifactTypeEnum.HEAT_ENV.getType())) {
                        @SuppressWarnings("unchecked")
                        Either<HeatParameterDefinition, ResultStatusEnum> propertyStatus = createModuleHeatParameter((Map<String, Object>) propertyNameValue.getValue());
                        if (propertyStatus.isRight()) {
                            return Either.right(propertyStatus.right().value());
                        }
                        HeatParameterDefinition property = propertyStatus.left().value();
                        property.setName(String.valueOf(propertyNameValue.getKey()));
                        moduleProperties.add(property);
                    } else {
                        addHeatParamDefinition(moduleProperties, propertyNameValue, true);
                    }
                } else {
                    addHeatParamDefinition(moduleProperties, propertyNameValue, false);
                }

            }

            if (moduleProperties.size() > 0) {
                eitherResult = Either.left(moduleProperties);
            }

        }
        return eitherResult;

    }

    private static void addHeatParamDefinition(List<HeatParameterDefinition> moduleProperties, Entry<String, Object> propertyNameValue, boolean isJson) {
        HeatParameterDefinition property = new HeatParameterDefinition();
        Object value = propertyNameValue.getValue();
        if (value != null) {
            property.setDefaultValue(isJson ? new Gson().toJson(value).toString() : StringEscapeUtils.escapeJava(String.valueOf(value)));
        }
        property.setName(String.valueOf(propertyNameValue.getKey()));
        moduleProperties.add(property);
    }

    private static Either<HeatParameterDefinition, ResultStatusEnum> createModuleHeatParameter(Map<String, Object> propertyValue) {
        HeatParameterDefinition propertyDef = new HeatParameterDefinition();
        String type;
        Either<String, ResultStatusEnum> propertyFieldType = findFirstToscaStringElement(propertyValue, ToscaTagNamesEnum.TYPE);
        if (propertyFieldType.isLeft()) {
            type = propertyFieldType.left().value();
            propertyDef.setType(type);
        } else {
            return Either.right(ResultStatusEnum.INVALID_PROPERTY_TYPE);
        }
        Either<String, ResultStatusEnum> propertyFieldDescription = findFirstToscaStringElement(propertyValue, ToscaTagNamesEnum.DESCRIPTION);
        if (propertyFieldDescription.isLeft()) {
            propertyDef.setDescription(propertyFieldDescription.left().value());
        }

        Either<Object, ResultStatusEnum> propertyFieldDefaultVal = findToscaElement(propertyValue, ToscaTagNamesEnum.DEFAULT_VALUE, ToscaElementTypeEnum.ALL);
        if (propertyFieldDefaultVal.isLeft()) {
            if (propertyFieldDefaultVal.left().value() == null) {
                return Either.right(ResultStatusEnum.INVALID_PROPERTY_VALUE);
            }
            Object value = propertyFieldDefaultVal.left().value();
            String defaultValue = type.equals(HeatParameterType.JSON.getType()) ? new Gson().toJson(value).toString() : StringEscapeUtils.escapeJava(String.valueOf(value));
            propertyDef.setDefaultValue(defaultValue);
            propertyDef.setCurrentValue(defaultValue);
        }

        return Either.left(propertyDef);
    }

    public static String getPropertyJsonStringValue(Object value, String type) {
        Gson gson = new Gson();
        if (type == null) {
            return null;
        }
        ToscaPropertyType validType = ToscaPropertyType.isValidType(type);
        if (validType == null ||  validType.equals(ToscaPropertyType.JSON) ||validType.equals(ToscaPropertyType.MAP) || validType.equals(ToscaPropertyType.LIST)) {
            return gson.toJson(value);
        }
        return value.toString();
    }

    /**
     * removes from Json map (toscaJson) first element found by name (elementName) note that this method could update the received argument toscaJson
     *
     * @param toscaJson
     * @param elementName
     */
    public static void removeElementFromJsonMap(Map<String, Object> toscaJson, String elementName) {
        for (Entry<String, Object> entry : toscaJson.entrySet()) {
            String key = entry.getKey();
            Object value = entry.getValue();
            if (key.equals(elementName)) {
                toscaJson.remove(elementName);
                return;
            } else if (value instanceof Map) {
                removeElementFromJsonMap((Map<String, Object>) value, elementName);
            }
        }
    }
}