com.expediagroup.graphql.directives.KotlinSchemaDirectiveEnvironment.kt Maven / Gradle / Ivy

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/*
 * Copyright 2019 Expedia, Inc
 *
 * 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
 *
 *     https://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.expediagroup.graphql.directives

import graphql.introspection.Introspection
import graphql.schema.GraphQLArgument
import graphql.schema.GraphQLDirective
import graphql.schema.GraphQLDirectiveContainer
import graphql.schema.GraphQLEnumType
import graphql.schema.GraphQLEnumValueDefinition
import graphql.schema.GraphQLFieldDefinition
import graphql.schema.GraphQLInputObjectField
import graphql.schema.GraphQLInputObjectType
import graphql.schema.GraphQLInterfaceType
import graphql.schema.GraphQLObjectType
import graphql.schema.GraphQLScalarType
import graphql.schema.GraphQLUnionType

/**
 * KotlinSchemaDirectiveEnvironment holds basic wiring information that includes target element and directive that is to be applied.
 */
open class KotlinSchemaDirectiveEnvironment(
    val element: T,
    val directive: GraphQLDirective
) {
    /**
     * Verifies whether specified directive is applicable on the target element.
     */
    @Suppress("Detekt.ComplexMethod")
    fun isValid(): Boolean =
        when (element) {
            is GraphQLArgument -> directive.validLocations().contains(Introspection.DirectiveLocation.ARGUMENT_DEFINITION)
            is GraphQLEnumType -> directive.validLocations().contains(Introspection.DirectiveLocation.ENUM)
            is GraphQLEnumValueDefinition -> directive.validLocations().contains(Introspection.DirectiveLocation.ENUM_VALUE)
            is GraphQLFieldDefinition -> directive.validLocations().contains(Introspection.DirectiveLocation.FIELD_DEFINITION)
            is GraphQLInputObjectField -> directive.validLocations().contains(Introspection.DirectiveLocation.INPUT_FIELD_DEFINITION)
            is GraphQLInputObjectType -> directive.validLocations().contains(Introspection.DirectiveLocation.INPUT_OBJECT)
            is GraphQLInterfaceType -> directive.validLocations().contains(Introspection.DirectiveLocation.INTERFACE)
            is GraphQLObjectType -> directive.validLocations().contains(Introspection.DirectiveLocation.OBJECT)
            is GraphQLScalarType -> directive.validLocations().contains(Introspection.DirectiveLocation.SCALAR)
            is GraphQLUnionType -> directive.validLocations().contains(Introspection.DirectiveLocation.UNION)
            else -> false
        }
}