journaly/dist/source/journaly/subject.js

A simple pub-sub library project

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Subject = void 0;
const invalidTopic_1 = __importDefault(require("./invalidTopic"));
class Subject {
    getTopics() {
        const topics = [];
        if (this.subscribers) {
            const newProps = Object.getOwnPropertyNames(this.subscribers);
            for (const prop of newProps) {
                if (!topics.includes(prop))
                    topics.push(prop);
            }
        }
        return topics;
    }
    subscribe(subscriber, topic) {
        if (topic)
            this.checkTopic(topic);
        if (this.checkSubscriber(subscriber, topic) !== -1)
            return new Promise((_resolve, reject) => {
                reject(new invalidTopic_1.default(topic));
            });
        if (topic)
            this.subscribers[topic].push(subscriber);
        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        // @ts-ignore
        else
            this.subscribers.push(subscriber);
        return new Promise((resolve) => {
            resolve([]);
        });
    }
    unsubscribe(subscriber, topic) {
        if (topic)
            this.checkTopic(topic);
        const index = this.checkSubscriber(subscriber, topic);
        if (index === -1) {
            return false;
        }
        if (topic)
            this.subscribers[topic].splice(index, 1);
        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        // @ts-ignore
        else
            this.subscribers.splice(index, 1);
        return true;
    }
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    async publish(topic, ...params) {
        if (topic) {
            this.checkTopic(topic);
            return Promise.all(this.subscribers[topic].map((subscriber) => {
                return subscriber(...params);
            }));
        }
        else {
            return Promise.all(
            // eslint-disable-next-line @typescript-eslint/ban-ts-comment
            // @ts-ignore
            this.subscribers.map((subscriber) => {
                return subscriber(...params);
            }));
        }
    }
    checkSubscriber(subscriber, topic) {
        const index = topic
            ? this.subscribers[topic].indexOf(subscriber)
            : // eslint-disable-next-line @typescript-eslint/ban-ts-comment
                // @ts-ignore
                this.subscribers.indexOf(subscriber);
        return index;
    }
    checkTopic(topic) {
        if (!this.subscribers[topic]) {
            this.subscribers[topic] = [];
        }
    }
}
exports.Subject = Subject;
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