/*
 * Copyright 2016-present Open Networking Laboratory
 *
 * 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 org.onosproject.yangutils.translator.tojava;

import org.onosproject.yangutils.datamodel.YangNode;
import org.onosproject.yangutils.datamodel.YangType;
import org.onosproject.yangutils.translator.exception.TranslatorException;

import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getIsQualifiedAccessOrAddToImportList;
import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedInfoOfFromString;
import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedTypeInfoOfAttribute;
import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedTypeInfoOfCurNode;
import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;

/**
 * Represents the attribute info corresponding to class/interface generated.
 */
public final class JavaAttributeInfo {

    /**
     * The data type info of attribute.
     */
    private YangType<?> attrType;

    /**
     * Name of the attribute.
     */
    private String name;

    /**
     * If the added attribute is a list of info.
     */
    private boolean isListAttr = false;

    /**
     * If the added attribute has to be accessed in a fully qualified manner.
     */
    private boolean isQualifiedName = false;

    /**
     * The class info will be used to set the attribute type and package info
     * will be use for qualified name.
     */
    private JavaQualifiedTypeInfo importInfo;

    /**
     * Creates a java attribute info object.
     */
    private JavaAttributeInfo() {
    }

    /**
     * Creates object of java attribute info.
     *
     * @param attrType        YANG type
     * @param name            attribute name
     * @param isListAttr      is list attribute
     * @param isQualifiedName is qualified name
     */
    public JavaAttributeInfo(YangType<?> attrType, String name, boolean isListAttr, boolean isQualifiedName) {
        this.attrType = attrType;
        this.name = name;
        this.isListAttr = isListAttr;
        this.isQualifiedName = isQualifiedName;
    }

    /**
     * Creates an attribute info object corresponding to the passed type's attribute
     * information and return it.
     *
     * @param curNode               current data model node for which the java file is being generated
     * @param referredTypesAttrInfo attribute of referred type
     * @return JavaAttributeInfo attribute details required to add in temporary files
     */
    public static JavaAttributeInfo getFromStringAttributeInfo(YangNode curNode,
                                                               JavaAttributeInfo referredTypesAttrInfo) {

        JavaQualifiedTypeInfo qualifiedInfoOfFromString = getQualifiedInfoOfFromString(referredTypesAttrInfo);
        /*
         * Create a new java attribute info with qualified information of
         * wrapper classes.
         */
        return getAttributeInfoForTheData(qualifiedInfoOfFromString, referredTypesAttrInfo.getAttributeName(),
                referredTypesAttrInfo.getAttributeType(), curNode, false);
    }

    /**
     * Creates an attribute info object corresponding to the passed type attribute
     * information and return it.
     *
     * @param curNode         current data model node for which the java file is being
     *                        generated
     * @param attributeType   leaf data type
     * @param attributeName   leaf name
     * @param isListAttribute is the current added attribute needs to be a list
     * @return AttributeInfo attribute details required to add in temporary
     * files
     */
    public static JavaAttributeInfo getAttributeInfoOfType(YangNode curNode,
                                                           YangType<?> attributeType, String attributeName,
                                                           boolean isListAttribute) {
        /*
         * Get the import info corresponding to the attribute for import in
         * generated java files or qualified access
         */
        JavaQualifiedTypeInfo importInfo = getQualifiedTypeInfoOfAttribute(curNode,
                attributeType, attributeName, isListAttribute);

        return getAttributeInfoForTheData(importInfo, attributeName, attributeType, curNode, isListAttribute);
    }

    /**
     * Creates an attribute info object corresponding to the passed enumeration attribute
     * information and return it.
     *
     * @param curNode       current data model node for which the java file is being
     *                      generated
     * @param attributeName attribute name
     * @return AttributeInfo attribute details required to add in temporary
     * files
     */
    public static JavaAttributeInfo getAttributeInfoOfEnumAttribute(YangNode curNode, String attributeName) {

        String curNodeName = ((HasJavaFileInfo) curNode).getJavaFileInfo().getJavaName();

        /*
         * Get the import info corresponding to the attribute for import in
         * generated java files or qualified access
         */
        JavaQualifiedTypeInfo qualifiedTypeInfo = getQualifiedTypeInfoOfCurNode(curNode,
                curNodeName, false);

        return getAttributeInfoForTheData(qualifiedTypeInfo, attributeName, null, curNode, false);
    }

    /**
     * Returns the data type info of attribute.
     *
     * @return the data type info of attribute
     */
    public YangType<?> getAttributeType() {

        if (attrType == null) {
            throw new TranslatorException("Expected java attribute type is null");
        }
        return attrType;
    }

    /**
     * Sets the data type info of attribute.
     *
     * @param type the data type info of attribute
     */
    public void setAttributeType(YangType<?> type) {
        attrType = type;
    }

    /**
     * Returns name of the attribute.
     *
     * @return name of the attribute
     */
    public String getAttributeName() {

        if (name == null) {
            throw new TranslatorException("Expected java attribute name is null");
        }
        return name;
    }

    /**
     * Sets name of the attribute.
     *
     * @param attrName name of the attribute
     */
    public void setAttributeName(String attrName) {
        name = attrName;
    }

    /**
     * Returns if the added attribute is a list of info.
     *
     * @return the if the added attribute is a list of info
     */
    public boolean isListAttr() {
        return isListAttr;
    }

    /**
     * Sets if the added attribute is a list of info.
     *
     * @param isList if the added attribute is a list of info
     */
    public void setListAttr(boolean isList) {
        isListAttr = isList;
    }

    /**
     * Returns if the added attribute has to be accessed in a fully qualified
     * manner.
     *
     * @return the if the added attribute has to be accessed in a fully
     * qualified manner.
     */
    public boolean isQualifiedName() {
        return isQualifiedName;
    }

    /**
     * Sets if the added attribute has to be accessed in a fully qualified
     * manner.
     *
     * @param isQualified if the added attribute has to be accessed in a fully
     *                    qualified manner
     */
    public void setIsQualifiedAccess(boolean isQualified) {
        isQualifiedName = isQualified;
    }

    /**
     * Returns the import info for the attribute type. It will be null, if the type
     * is basic built-in java type.
     *
     * @return import info
     */
    public JavaQualifiedTypeInfo getImportInfo() {
        return importInfo;
    }

    /**
     * Sets the import info for the attribute type.
     *
     * @param importInfo import info for the attribute type
     */
    public void setImportInfo(JavaQualifiedTypeInfo importInfo) {
        this.importInfo = importInfo;
    }

    /**
     * Creates an attribute info object corresponding to the passed leaf
     * information and return it.
     *
     * @param curNode         current data model node for which the java file is being
     *                        generated
     * @param attributeType   leaf data type
     * @param attributeName   leaf name
     * @param isListAttribute is the current added attribute needs to be a list
     * @return AttributeInfo attribute details required to add in temporary
     * files
     */
    public static JavaAttributeInfo getAttributeInfoOfLeaf(YangNode curNode,
                                                           YangType<?> attributeType, String attributeName,
                                                           boolean isListAttribute) {

        /*
         * Get the import info corresponding to the attribute for import in
         * generated java files or qualified access
         */
        JavaQualifiedTypeInfo importInfo = getQualifiedTypeInfoOfAttribute(curNode,
                attributeType, attributeName, isListAttribute);

        return getAttributeInfoForTheData(importInfo, attributeName, attributeType, curNode, isListAttribute);
    }

    /**
     * Creates an attribute info object corresponding to a data model node and
     * return it.
     *
     * @param curNode    current data model node for which the java code generation
     *                   is being handled
     * @param parentNode parent node in which the current node is an attribute
     * @param isListNode is the current added attribute needs to be a list
     * @return AttributeInfo attribute details required to add in temporary
     * files
     */
    public static JavaAttributeInfo getCurNodeAsAttributeInParent(
            YangNode curNode, YangNode parentNode, boolean isListNode) {

        String curNodeName = ((HasJavaFileInfo) curNode).getJavaFileInfo().getJavaName();

        /*
         * Get the import info corresponding to the attribute for import in
         * generated java files or qualified access
         */
        JavaQualifiedTypeInfo qualifiedTypeInfo = getQualifiedTypeInfoOfCurNode(parentNode,
                curNodeName, isListNode);

        return getAttributeInfoForTheData(qualifiedTypeInfo, curNodeName, null, parentNode, isListNode);
    }

    /**
     * Creates an attribute info object corresponding to a data model node and
     * return it.
     *
     * @param parentNode  parent node in which the current node is an attribute
     * @param isListNode  is the current added attribute needs to be a list
     * @param curNodeName is the current added attribute needs to be a list
     * @return AttributeInfo attribute details required to add in temporary
     * files
     */
    public static JavaAttributeInfo getCurNodeAsAttributeInParent(YangNode parentNode, boolean isListNode,
                                                                  String curNodeName) {

        /*
         * Get the import info corresponding to the attribute for import in
         * generated java files or qualified access
         */
        JavaQualifiedTypeInfo qualifiedTypeInfo = getQualifiedTypeInfoOfCurNode(parentNode,
                curNodeName, isListNode);

        return getAttributeInfoForTheData(qualifiedTypeInfo, curNodeName, null, parentNode, isListNode);
    }


    /**
     * Returns java attribute info.
     *
     * @param importInfo      java qualified type info
     * @param attributeName   attribute name
     * @param attributeType   attribute type
     * @param curNode         current YANG node
     * @param isListAttribute is list attribute
     * @return java attribute info.
     */
    private static JavaAttributeInfo getAttributeInfoForTheData(JavaQualifiedTypeInfo importInfo, String attributeName,
                                                                YangType<?> attributeType, YangNode curNode,
                                                                boolean isListAttribute) {

        JavaAttributeInfo newAttr = new JavaAttributeInfo();
        newAttr.setImportInfo(importInfo);
        newAttr.setIsQualifiedAccess(getIsQualifiedAccessOrAddToImportList(curNode, importInfo));
        newAttr.setAttributeName(getCamelCase(attributeName, null));
        newAttr.setListAttr(isListAttribute);
        newAttr.setImportInfo(importInfo);
        newAttr.setAttributeType(attributeType);

        return newAttr;
    }
}