apollo-server/packages/apollo-server-adonis/src/adonisApollo.ts

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import AdonisContext from '@adonisjs/framework/src/Context';
import { GraphQLOptions, HttpQueryError, runHttpQuery } from 'apollo-server-core';
import * as GraphiQL from 'apollo-server-module-graphiql';
export interface AdonisGraphQLOptionsFunction {
(ctx: AdonisContext): GraphQLOptions | Promise<GraphQLOptions>;
}
export interface AdonisHandler {
(req: any, next): void;
}
export function graphqlAdonis (options: GraphQLOptions | AdonisGraphQLOptionsFunction): AdonisHandler {
if (!options) {
throw new Error('Apollo Server requires options.');
}
if (arguments.length > 1) {
throw new Error(`Apollo Server expects exactly one argument, got ${arguments.length}`);
}
return (ctx: AdonisContext): Promise<void> => {
const { request, response } = ctx;
const method = request.method();
const query = method === 'POST' ? request.post() : request.get();
return runHttpQuery([ctx], {
method, options, query,
}).then(gqlResponse => {
response.json(gqlResponse);
}, (error: HttpQueryError) => {
if ('HttpQueryError' !== error.name) {
throw error;
}
if (error.headers) {
Object.keys(error.headers).forEach((header) => {
response.header(header, error.headers[header]);
});
}
response.status(error.statusCode).send(error.message);
});
};
}
export interface AdonisGraphiQLOptionsFunction {
(ctx: AdonisContext): GraphiQL.GraphiQLData | Promise<GraphiQL.GraphiQLData>;
}
export function graphiqlAdonis (options: GraphiQL.GraphiQLData | AdonisGraphiQLOptionsFunction) {
return (ctx: AdonisContext): Promise<void> => {
const { request, response } = ctx;
const query = request.get();
return GraphiQL.resolveGraphiQLString(query, options, ctx)
.then(graphiqlString => {
response.type('text/html').send(graphiqlString);
}, (error: HttpQueryError) => {
response.status(500).send(error.message);
});
};
}