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Java Code Generator based on GraphQL schema
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package com.kobylynskyi.graphql.codegen.mapper;

import com.kobylynskyi.graphql.codegen.model.MappingContext;
import com.kobylynskyi.graphql.codegen.model.definitions.ExtendedInputObjectTypeDefinition;

import java.util.HashMap;
import java.util.Map;

import static com.kobylynskyi.graphql.codegen.model.DataModelFields.ANNOTATIONS;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.BUILDER;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.CLASS_NAME;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.EQUALS_AND_HASH_CODE;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.FIELDS;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.GENERATED_INFO;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.IMMUTABLE_MODELS;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.JAVA_DOC;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.NAME;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.PACKAGE;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.TO_STRING;
import static com.kobylynskyi.graphql.codegen.model.DataModelFields.TO_STRING_FOR_REQUEST;

/**
 * Map input type definition to a Freemarker data model
 *
 * @author kobylynskyi
 */
public class InputDefinitionToDataModelMapper {

    private InputDefinitionToDataModelMapper() {
    }

    /**
     * Map input type definition to a Freemarker data model
     *
     * @param mappingContext Global mapping context
     * @param definition     Definition of input type including base definition and its extensions
     * @return Freemarker data model of the GraphQL type
     */
    public static Map map(MappingContext mappingContext, ExtendedInputObjectTypeDefinition definition) {
        Map dataModel = new HashMap<>();
        // type/enum/input/interface/union classes do not require any imports
        dataModel.put(PACKAGE, MapperUtils.getModelPackageName(mappingContext));
        dataModel.put(CLASS_NAME, MapperUtils.getModelClassNameWithPrefixAndSuffix(mappingContext, definition));
        dataModel.put(JAVA_DOC, definition.getJavaDoc());
        dataModel.put(NAME, definition.getName());
        dataModel.put(FIELDS, InputValueDefinitionToParameterMapper.map(mappingContext, definition.getValueDefinitions(), definition.getName()));
        dataModel.put(ANNOTATIONS, GraphqlTypeToJavaTypeMapper.getAnnotations(mappingContext, definition));
        dataModel.put(BUILDER, mappingContext.getGenerateBuilder());
        dataModel.put(EQUALS_AND_HASH_CODE, mappingContext.getGenerateEqualsAndHashCode());
        dataModel.put(IMMUTABLE_MODELS, mappingContext.getGenerateImmutableModels());
        dataModel.put(TO_STRING, mappingContext.getGenerateToString());
        dataModel.put(TO_STRING_FOR_REQUEST, mappingContext.getGenerateClient());
        dataModel.put(GENERATED_INFO, mappingContext.getGeneratedInformation());
        return dataModel;
    }

}