grafserv/dist/middleware/graphiql.js

A highly optimized server for GraphQL, powered by Grafast

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.makeGraphiQLHandler = makeGraphiQLHandler;
exports.makeGraphiQLStaticHandler = makeGraphiQLStaticHandler;
const node_util_1 = require("node:util");
const node_zlib_1 = require("node:zlib");
const brotliCompress = (0, node_util_1.promisify)(node_zlib_1.brotliCompress);
const BROTLI_OPTIONS = {
    params: {
        // No compression is ~3.2KB and 100,000 compresses takes 195ms
        // Level 1 compression is ~1.2KB and 100,000 compresses takes 1.46s
        // Level 5 compression is ~0.96KB and 100,000 compresses takes 3.12s
        // Level 11 compression is ~0.85KB and 100,000 compresses takes 211s
        [node_zlib_1.constants.BROTLI_PARAM_QUALITY]: 5,
    },
};
const BROTLI_HEADERS = {
    "content-encoding": "br",
    "content-type": "text/html; charset=utf-8",
};
let ruruServer = null;
let _ruruServerPromise = null;
function loadRuruServer() {
    return (_ruruServerPromise ??= import("ruru/server").then((mod) => (ruruServer = mod)));
}
let ruruStatic = null;
let _ruruStaticPromise = null;
function loadRuruStatic() {
    return (_ruruStaticPromise ??= import("ruru/static").then((mod) => (ruruStatic = mod)));
}
function makeGraphiQLHandler(resolvedPreset, middleware, dynamicOptions) {
    return async (request) => {
        const { makeHTMLParts, ruruHTML } = ruruServer ?? (await loadRuruServer());
        const config = {
            ...resolvedPreset.ruru,
            // Override the ruru staticPath; this isn't for Ruru CLI
            staticPath: dynamicOptions.graphiqlStaticPath,
            endpoint: dynamicOptions.graphqlPath,
            // TODO: websocket endpoint
            clientConfig: {
                ...resolvedPreset.ruru?.clientConfig,
                debugTools: dynamicOptions.explain === true
                    ? ["explain", "plan"]
                    : dynamicOptions.explain === false
                        ? []
                        : dynamicOptions.explain,
            },
        };
        const htmlParts = makeHTMLParts(config);
        let html;
        if (middleware != null && middleware.middleware.ruruHTML != null) {
            html = await middleware.run("ruruHTML", {
                _ruruServer: ruruServer,
                resolvedPreset,
                config,
                htmlParts: { ...htmlParts },
                request,
            }, ruruHTMLFromEvent);
        }
        else {
            html = ruruHTML(config, htmlParts);
        }
        let payload = Buffer.from(html, "utf8");
        const accept = request.getHeader("accept-encoding");
        if (typeof accept === "string" && /\bbr\b/i.test(accept)) {
            payload = await brotliCompress(payload, BROTLI_OPTIONS);
            const headers = BROTLI_HEADERS;
            return { type: "raw", request, dynamicOptions, headers, payload };
        }
        else {
            return { type: "html", request, dynamicOptions, payload };
        }
    };
}
function makeGraphiQLStaticHandler(resolvedPreset, _middleware, dynamicOptions) {
    return async (request) => {
        const { getStaticFile } = ruruStatic ?? (await loadRuruStatic());
        const file = await getStaticFile({
            ...resolvedPreset.ruru,
            // Override the ruru staticPath; this isn't for Ruru CLI
            staticPath: dynamicOptions.graphiqlStaticPath,
            urlPath: request.path,
            acceptEncoding: request.getHeader("accept-encoding"),
        });
        if (!file) {
            return {
                request,
                dynamicOptions,
                type: "notFound",
            };
        }
        const etag = request.getHeader("if-none-match");
        if (etag === file.headers.etag) {
            return {
                statusCode: 304,
                request,
                dynamicOptions,
                type: "noContent",
                headers: { etag },
            };
        }
        return {
            statusCode: 200,
            request,
            dynamicOptions,
            type: "raw",
            headers: file.headers,
            payload: file.content,
        };
    };
}
function ruruHTMLFromEvent(event) {
    return event._ruruServer.ruruHTML(event.config, event.htmlParts);
}
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