@shgysk8zer0/slack/cjs/block/image.cjs

An npm package for sending messages in Slack

'use strict';

var block = require('./block.cjs');
var text = require('../element/text.cjs');
var plainText = require('../element/plain-text.cjs');
var validation = require('../validation.cjs');
var functions = require('../functions.cjs');

class SlackImageBlock extends block.SlackBlock {
	#url;
	#alt;
	#title;

	constructor(url, { alt, title, id } = {}) {
		super({ id });
		this.url = url;
		this.#alt = alt;
		this.#title = title;
	}

	get alt() {
		return this.#alt;
	}

	set alt(val) {
		this.#alt = val;
	}

	get title() {
		return this.#title;
	}

	set title(val) {
		if (val instanceof text.SlackTextElement) {
			this.#title = val;
		} else if (typeof val === 'string') {
			this.title = new plainText.SlackPlainTextElement(val);
		} else {
			throw new TypeError('title must be SlackTextElement or a string.');
		}
	}

	get url() {
		return this.#url;
	}

	set url(val) {
		if (! validation.isURL(val)) {
			throw new TypeError(`${val} is not a valid URL.`);
		} else if (val instanceof URL) {
			this.#url = val.href;
		} else {
			this.#url = val;
		}
	}

	toJSON() {
		return {
			...super.toJSON(),
			image_url: this.#url,
			title: this.#title,
			alt_text: this.#alt,
		};
	}

	static get TYPE() {
		return 'image';
	}
}

const createSlackImageBlock = functions.createFactory(SlackImageBlock);

exports.SlackImageBlock = SlackImageBlock;
exports.createSlackImageBlock = createSlackImageBlock;