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78 lines
2.7 KiB
78 lines
2.7 KiB
/** Constructs the base URL from the headers from the given request. */
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import fastify, {FastifyInstance, FastifyRequest} from "fastify";
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import {Server, ServerOptions, ServerRequestHandler} from "slash-create";
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export function getBaseUrl(request: FastifyRequest): string {
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const hostHeader = request.hostname ?? "localhost"
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const proto = getFirstValue(request.headers["x-forwarded-proto"]) ?? "http"
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const path = getFirstValue(request.headers["x-base-path"]) ?? "/"
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return `${proto}://${hostHeader}${path}`
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}
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/** Translates a zero-to-many set of strings to one or zero strings. */
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export function getFirstValue(value: string | string[] | undefined): string | undefined {
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return typeof value === "string" ? value : Array.isArray(value) ? value[0] : undefined
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}
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/**
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* A server for Fastify applications.
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* @see https://fastify.io
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*/
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export class FastifyServerButItWorksUnlikeTheRealOne extends Server {
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readonly app: FastifyInstance;
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/**
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* @param app The fastify application
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* @param opts The server options
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*/
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constructor(app?: FastifyInstance, opts?: ServerOptions) {
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super(opts);
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this.app = app || fastify();
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}
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/**
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* Adds middleware to the Fastify server.
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* <warn>This requires you to have the 'middie' module registered to the server before using.</warn>
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* @param middleware The middleware to add.
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* @see https://www.fastify.io/docs/latest/Middleware/
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*/
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addMiddleware(middleware: Function) {
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// @ts-ignore
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if ('use' in this.app) this.app.use(middleware);
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else
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throw new Error(
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"In order to use Express-like middleware, you must initialize the server and register the 'middie' module."
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);
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return this;
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}
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/** Alias for {@link FastifyServerButItWorksUnlikeTheRealOne#addMiddleware} */
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use(middleware: Function) {
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return this.addMiddleware(middleware);
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}
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/** @private */
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createEndpoint(path: string, handler: ServerRequestHandler) {
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this.app.post(path, (req: any, res: any) =>
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handler(
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{
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headers: req.headers,
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body: req.body,
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request: req,
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response: res
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},
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async (response) => {
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res.status(response.status || 200);
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if (response.headers) res.headers(response.headers);
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res.send(response.body);
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}
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)
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);
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}
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/** @private */
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async listen(port = 8030, host = 'localhost') {
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if (this.alreadyListening) return;
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await this.app.listen(port, host);
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}
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} |