534 lines
19 KiB
JavaScript
534 lines
19 KiB
JavaScript
"use strict";
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/** @format */
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Composer = void 0;
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const context_1 = __importDefault(require("./context"));
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function always(x) {
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return () => x;
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}
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const anoop = always(Promise.resolve());
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class Composer {
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constructor(...fns) {
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this.handler = Composer.compose(fns);
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}
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/**
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* Registers a middleware.
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*/
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use(...fns) {
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this.handler = Composer.compose([this.handler, ...fns]);
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return this;
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}
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/**
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* Registers middleware for handling updates
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* matching given type guard function.
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*/
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guard(guardFn, ...fns) {
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return this.use(Composer.guard(guardFn, ...fns));
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}
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/**
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* Registers middleware for handling provided update types.
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*/
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on(updateType, ...fns) {
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return this.use(Composer.on(updateType, ...fns));
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}
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/**
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* Registers middleware for handling matching text messages.
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*/
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hears(triggers, ...fns) {
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return this.use(Composer.hears(triggers, ...fns));
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}
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/**
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* Registers middleware for handling specified commands.
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*/
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command(command, ...fns) {
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return this.use(Composer.command(command, ...fns));
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}
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/**
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* Registers middleware for handling matching callback queries.
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*/
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action(triggers, ...fns) {
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return this.use(Composer.action(triggers, ...fns));
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}
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/**
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* Registers middleware for handling matching inline queries.
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*/
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inlineQuery(triggers, ...fns) {
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return this.use(Composer.inlineQuery(triggers, ...fns));
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}
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/**
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* Registers middleware for handling game queries
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*/
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gameQuery(...fns) {
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return this.use(Composer.gameQuery(...fns));
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}
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/**
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* Registers middleware for dropping matching updates.
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*/
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drop(predicate) {
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return this.use(Composer.drop(predicate));
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}
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filter(predicate) {
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return this.use(Composer.filter(predicate));
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}
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entity(predicate, ...fns) {
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return this.use(Composer.entity(predicate, ...fns));
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}
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email(email, ...fns) {
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return this.use(Composer.email(email, ...fns));
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}
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url(url, ...fns) {
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return this.use(Composer.url(url, ...fns));
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}
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textLink(link, ...fns) {
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return this.use(Composer.textLink(link, ...fns));
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}
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textMention(mention, ...fns) {
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return this.use(Composer.textMention(mention, ...fns));
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}
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mention(mention, ...fns) {
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return this.use(Composer.mention(mention, ...fns));
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}
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phone(number, ...fns) {
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return this.use(Composer.phone(number, ...fns));
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}
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hashtag(hashtag, ...fns) {
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return this.use(Composer.hashtag(hashtag, ...fns));
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}
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cashtag(cashtag, ...fns) {
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return this.use(Composer.cashtag(cashtag, ...fns));
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}
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spoiler(text, ...fns) {
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return this.use(Composer.spoiler(text, ...fns));
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}
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/**
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* Registers a middleware for handling /start
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*/
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start(...fns) {
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const handler = Composer.compose(fns);
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return this.command('start', (ctx, next) => {
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// First entity is the /start bot_command itself
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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const entity = ctx.message.entities[0];
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const startPayload = ctx.message.text.slice(entity.length + 1);
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return handler(Object.assign(ctx, { startPayload }), next);
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});
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}
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/**
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* Registers a middleware for handling /help
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*/
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help(...fns) {
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return this.command('help', ...fns);
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}
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/**
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* Registers a middleware for handling /settings
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*/
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settings(...fns) {
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return this.command('settings', ...fns);
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}
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middleware() {
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return this.handler;
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}
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static reply(...args) {
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return (ctx) => ctx.reply(...args);
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}
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static catch(errorHandler, ...fns) {
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const handler = Composer.compose(fns);
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// prettier-ignore
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return (ctx, next) => Promise.resolve(handler(ctx, next))
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.catch((err) => errorHandler(err, ctx));
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}
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/**
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* Generates middleware that runs in the background.
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*/
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static fork(middleware) {
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const handler = Composer.unwrap(middleware);
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return async (ctx, next) => {
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await Promise.all([handler(ctx, anoop), next()]);
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};
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}
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static tap(middleware) {
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const handler = Composer.unwrap(middleware);
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return (ctx, next) => Promise.resolve(handler(ctx, anoop)).then(() => next());
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}
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/**
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* Generates middleware that gives up control to the next middleware.
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*/
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static passThru() {
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return (ctx, next) => next();
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}
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static lazy(factoryFn) {
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if (typeof factoryFn !== 'function') {
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throw new Error('Argument must be a function');
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}
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return (ctx, next) => Promise.resolve(factoryFn(ctx)).then((middleware) => Composer.unwrap(middleware)(ctx, next));
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}
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static log(logFn = console.log) {
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return (ctx, next) => {
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logFn(JSON.stringify(ctx.update, null, 2));
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return next();
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};
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}
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/**
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* @param trueMiddleware middleware to run if the predicate returns true
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* @param falseMiddleware middleware to run if the predicate returns false
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*/
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static branch(predicate, trueMiddleware, falseMiddleware) {
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if (typeof predicate !== 'function') {
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return Composer.unwrap(predicate ? trueMiddleware : falseMiddleware);
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}
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return Composer.lazy((ctx) => Promise.resolve(predicate(ctx)).then((value) => value ? trueMiddleware : falseMiddleware));
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}
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/**
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* Generates optional middleware.
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* @param predicate predicate to decide on a context object whether to run the middleware
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* @param middleware middleware to run if the predicate returns true
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*/
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static optional(predicate, ...fns) {
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return Composer.branch(predicate, Composer.compose(fns), Composer.passThru());
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}
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static filter(predicate) {
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return Composer.branch(predicate, Composer.passThru(), anoop);
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}
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/**
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* Generates middleware for dropping matching updates.
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*/
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static drop(predicate) {
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return Composer.branch(predicate, anoop, Composer.passThru());
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}
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static dispatch(routeFn, handlers) {
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return Composer.lazy((ctx) => Promise.resolve(routeFn(ctx)).then((value) => handlers[value]));
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}
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// EXPLANATION FOR THE ts-expect-error ANNOTATIONS
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// The annotations around function invocations with `...fns` are there
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// whenever we perform validation logic that the flow analysis of TypeScript
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// cannot comprehend. We always make sure that the middleware functions are
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// only invoked with properly constrained context objects, but this cannot be
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// determined automatically.
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/**
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* Generates optional middleware based on a predicate that only operates on `ctx.update`.
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*
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* Example:
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* ```ts
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* import { Composer, Update } from 'telegraf'
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*
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* const predicate = (u): u is Update.MessageUpdate => 'message' in u
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* const middleware = Composer.guard(predicate, (ctx) => {
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* const message = ctx.update.message
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* })
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* ```
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*
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* Note that `Composer.on('message')` is preferred over this.
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*
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* @param guardFn predicate to decide whether to run the middleware based on the `ctx.update` object
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* @param fns middleware to run if the predicate returns true
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* @see `Composer.optional` for a more generic version of this method that allows the predicate to operate on `ctx` itself
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*/
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static guard(guardFn, ...fns) {
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return Composer.optional((ctx) => guardFn(ctx.update),
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// @ts-expect-error see explanation above
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...fns);
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}
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/**
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* Generates middleware for handling provided update types.
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* @deprecated use `Composer.on`
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*/
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static mount(updateType, ...fns) {
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return Composer.on(updateType, ...fns);
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}
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/**
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* Generates middleware for handling provided update types.
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*/
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static on(updateType, ...fns) {
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const updateTypes = normalizeTextArguments(updateType);
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const predicate = (update) => updateTypes.some((type) =>
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// Check update type
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type in update ||
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// Check message sub-type
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('message' in update && type in update.message));
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return Composer.guard(predicate, ...fns);
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}
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static entity(predicate, ...fns) {
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if (typeof predicate !== 'function') {
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const entityTypes = normalizeTextArguments(predicate);
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return Composer.entity(({ type }) => entityTypes.includes(type), ...fns);
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}
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return Composer.optional((ctx) => {
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var _a;
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const msg = (_a = ctx.message) !== null && _a !== void 0 ? _a : ctx.channelPost;
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if (msg === undefined) {
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return false;
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}
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const text = getText(msg);
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const entities = getEntities(msg);
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if (text === undefined)
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return false;
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return entities.some((entity) => predicate(entity, text.substring(entity.offset, entity.offset + entity.length), ctx));
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// @ts-expect-error see explanation above
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}, ...fns);
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}
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static entityText(entityType, predicate, ...fns) {
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if (fns.length === 0) {
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// prettier-ignore
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return Array.isArray(predicate)
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// @ts-expect-error predicate is really the middleware
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? Composer.entity(entityType, ...predicate)
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// @ts-expect-error predicate is really the middleware
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: Composer.entity(entityType, predicate);
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}
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const triggers = normalizeTriggers(predicate);
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return Composer.entity(({ type }, value, ctx) => {
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if (type !== entityType) {
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return false;
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}
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for (const trigger of triggers) {
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// @ts-expect-error define so far unknown property `match`
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if ((ctx.match = trigger(value, ctx))) {
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return true;
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}
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}
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return false;
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// @ts-expect-error see explanation above
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}, ...fns);
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}
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static email(email, ...fns) {
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return Composer.entityText('email', email, ...fns);
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}
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static phone(number, ...fns) {
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return Composer.entityText('phone_number', number, ...fns);
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}
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static url(url, ...fns) {
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return Composer.entityText('url', url, ...fns);
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}
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static textLink(link, ...fns) {
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return Composer.entityText('text_link', link, ...fns);
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}
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static textMention(mention, ...fns) {
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return Composer.entityText('text_mention', mention, ...fns);
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}
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static mention(mention, ...fns) {
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return Composer.entityText('mention', normalizeTextArguments(mention, '@'), ...fns);
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}
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static hashtag(hashtag, ...fns) {
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return Composer.entityText('hashtag', normalizeTextArguments(hashtag, '#'), ...fns);
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}
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static cashtag(cashtag, ...fns) {
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return Composer.entityText('cashtag', normalizeTextArguments(cashtag, '$'), ...fns);
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}
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static spoiler(text, ...fns) {
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return Composer.entityText('spoiler', text, ...fns);
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}
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static match(triggers, ...fns) {
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const handler = Composer.compose(fns);
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return (ctx, next) => {
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var _a, _b, _c, _d;
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const text = (_c = (_b = (_a = getText(ctx.message)) !== null && _a !== void 0 ? _a : getText(ctx.channelPost)) !== null && _b !== void 0 ? _b : getText(ctx.callbackQuery)) !== null && _c !== void 0 ? _c : (_d = ctx.inlineQuery) === null || _d === void 0 ? void 0 : _d.query;
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if (text === undefined)
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return next();
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for (const trigger of triggers) {
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// @ts-expect-error Trust me, TS!
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const match = trigger(text, ctx);
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if (match) {
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// @ts-expect-error define so far unknown property `match`
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return handler(Object.assign(ctx, { match }), next);
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}
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}
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return next();
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};
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}
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/**
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* Generates middleware for handling matching text messages.
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*/
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static hears(triggers, ...fns) {
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return Composer.on('text', Composer.match(normalizeTriggers(triggers), ...fns));
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}
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/**
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* Generates middleware for handling specified commands.
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*/
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static command(command, ...fns) {
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if (fns.length === 0) {
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// @ts-expect-error command is really the middleware
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return Composer.entity('bot_command', command);
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}
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const commands = normalizeTextArguments(command, '/');
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return Composer.on('text', Composer.lazy((ctx) => {
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var _a;
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const groupCommands = ctx.me && ((_a = ctx.chat) === null || _a === void 0 ? void 0 : _a.type.endsWith('group'))
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? commands.map((command) => `${command}@${ctx.me}`)
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: [];
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return Composer.entity(({ offset, type }, value) => offset === 0 &&
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type === 'bot_command' &&
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(commands.includes(value) || groupCommands.includes(value)),
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// @ts-expect-error see explanation above
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...fns);
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}));
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}
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/**
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* Generates middleware for handling matching callback queries.
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*/
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static action(triggers, ...fns) {
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return Composer.on('callback_query', Composer.match(normalizeTriggers(triggers), ...fns));
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}
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/**
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* Generates middleware for handling matching inline queries.
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*/
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static inlineQuery(triggers, ...fns) {
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return Composer.on('inline_query', Composer.match(normalizeTriggers(triggers), ...fns));
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}
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/**
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* Generates middleware responding only to specified users.
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*/
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static acl(userId, ...fns) {
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if (typeof userId === 'function') {
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return Composer.optional(userId, ...fns);
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}
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const allowed = Array.isArray(userId) ? userId : [userId];
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// prettier-ignore
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return Composer.optional((ctx) => !ctx.from || allowed.includes(ctx.from.id), ...fns);
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}
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static memberStatus(status, ...fns) {
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const statuses = Array.isArray(status) ? status : [status];
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return Composer.optional(async (ctx) => {
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if (ctx.message === undefined)
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return false;
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const member = await ctx.getChatMember(ctx.message.from.id);
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return statuses.includes(member.status);
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}, ...fns);
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}
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/**
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* Generates middleware responding only to chat admins and chat creator.
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*/
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static admin(...fns) {
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return Composer.memberStatus(['administrator', 'creator'], ...fns);
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}
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/**
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* Generates middleware responding only to chat creator.
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*/
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static creator(...fns) {
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return Composer.memberStatus('creator', ...fns);
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}
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/**
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* Generates middleware running only in specified chat types.
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*/
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static chatType(type, ...fns) {
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const types = Array.isArray(type) ? type : [type];
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return Composer.optional((ctx) => {
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const chat = ctx.chat;
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return chat !== undefined && types.includes(chat.type);
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}, ...fns);
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}
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/**
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* Generates middleware running only in private chats.
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*/
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static privateChat(...fns) {
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return Composer.chatType('private', ...fns);
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}
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/**
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* Generates middleware running only in groups and supergroups.
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*/
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static groupChat(...fns) {
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return Composer.chatType(['group', 'supergroup'], ...fns);
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}
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/**
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* Generates middleware for handling game queries.
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*/
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static gameQuery(...fns) {
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return Composer.guard((u) => 'callback_query' in u && 'game_short_name' in u.callback_query, ...fns);
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}
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static unwrap(handler) {
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if (!handler) {
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throw new Error('Handler is undefined');
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}
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return 'middleware' in handler ? handler.middleware() : handler;
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}
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static compose(middlewares) {
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if (!Array.isArray(middlewares)) {
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throw new Error('Middlewares must be an array');
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}
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if (middlewares.length === 0) {
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return Composer.passThru();
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}
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if (middlewares.length === 1) {
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// Quite literally asserted in the above condition
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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return Composer.unwrap(middlewares[0]);
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}
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return (ctx, next) => {
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let index = -1;
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return execute(0, ctx);
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async function execute(i, context) {
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var _a;
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if (!(context instanceof context_1.default)) {
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throw new Error('next(ctx) called with invalid context');
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}
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if (i <= index) {
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throw new Error('next() called multiple times');
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}
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index = i;
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const handler = Composer.unwrap((_a = middlewares[i]) !== null && _a !== void 0 ? _a : next);
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await handler(context, async (ctx = context) => {
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await execute(i + 1, ctx);
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});
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}
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};
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}
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}
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exports.Composer = Composer;
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function escapeRegExp(s) {
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// $& means the whole matched string
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return s.replace(/[.*+\-?^${}()|[\]\\]/g, '\\$&');
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}
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function normalizeTriggers(triggers) {
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if (!Array.isArray(triggers)) {
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triggers = [triggers];
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}
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return triggers.map((trigger) => {
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if (!trigger) {
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throw new Error('Invalid trigger');
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}
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if (typeof trigger === 'function') {
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return trigger;
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}
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if (trigger instanceof RegExp) {
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return (value = '') => {
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trigger.lastIndex = 0;
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return trigger.exec(value);
|
|
};
|
|
}
|
|
const regex = new RegExp(`^${escapeRegExp(trigger)}$`);
|
|
return (value) => regex.exec(value);
|
|
});
|
|
}
|
|
function getEntities(msg) {
|
|
var _a, _b;
|
|
if (msg == null)
|
|
return [];
|
|
if ('caption_entities' in msg)
|
|
return (_a = msg.caption_entities) !== null && _a !== void 0 ? _a : [];
|
|
if ('entities' in msg)
|
|
return (_b = msg.entities) !== null && _b !== void 0 ? _b : [];
|
|
return [];
|
|
}
|
|
function getText(msg) {
|
|
if (msg == null)
|
|
return undefined;
|
|
if ('caption' in msg)
|
|
return msg.caption;
|
|
if ('text' in msg)
|
|
return msg.text;
|
|
if ('data' in msg)
|
|
return msg.data;
|
|
if ('game_short_name' in msg)
|
|
return msg.game_short_name;
|
|
return undefined;
|
|
}
|
|
function normalizeTextArguments(argument, prefix = '') {
|
|
const args = Array.isArray(argument) ? argument : [argument];
|
|
// prettier-ignore
|
|
return args
|
|
.filter(Boolean)
|
|
.map((arg) => prefix && typeof arg === 'string' && !arg.startsWith(prefix) ? `${prefix}${arg}` : arg);
|
|
}
|
|
exports.default = Composer;
|