@neo4j/graphql/dist/schema/validation/validate-custom-resolver-requires.js

A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations

"use strict";
/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * 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.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.validateCustomResolverRequires = validateCustomResolverRequires;
const schema_1 = require("@graphql-tools/schema");
const graphql_1 = require("graphql");
function validateCustomResolverRequires(objType, schema) {
    if (!objType.fields) {
        return;
    }
    for (const field of objType.fields) {
        if (!field.directives) {
            continue;
        }
        const customResolverDirective = field.directives.find((directive) => directive.name.value === "customResolver");
        if (!customResolverDirective || !customResolverDirective.arguments) {
            continue;
        }
        const requiresArg = customResolverDirective.arguments.find((arg) => arg.name.value === "requires");
        if (!requiresArg) {
            continue;
        }
        if (requiresArg.value.kind !== graphql_1.Kind.STRING) {
            throw new Error("@customResolver requires expects a string");
        }
        const selectionSetDocument = (0, graphql_1.parse)(`{ ${requiresArg.value.value} }`);
        validateSelectionSet(schema, objType, selectionSetDocument);
    }
}
function validateSelectionSet(baseSchema, object, selectionSetDocument) {
    const validationSchema = (0, schema_1.mergeSchemas)({
        schemas: [baseSchema],
        typeDefs: `
                schema {
                    query: ${object.name.value}
                }
            `,
        assumeValid: true,
    });
    const errors = (0, graphql_1.validate)(validationSchema, selectionSetDocument);
    if (errors.length) {
        throw new Error(`Invalid selection set provided to @customResolver on ${object.name.value}:\n${errors.join("\n")}`);
    }
}
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