@apicart/js-utils/src/components/FlashMessages.ts

A small set of useful utilities for easier development

import {
	Json,
	LocalStorage,
	Objects,
	Validators,
	Loops
} from '.';

class FlashMessages
{
	private readonly STORAGE_KEY: string = 'utils_flash_messages'

	public addMessage(content: any, type: string | null = null): this
	{
		type = type || 'info';

		const flashMessagesItems = this.getMessages();

		if (!(type in flashMessagesItems)) {
			flashMessagesItems[type] = [];
		}

		flashMessagesItems[type].push(content);
		LocalStorage.setItem(this.STORAGE_KEY, flashMessagesItems);

		return this;
	}

	public getMessages(): Record<string, any>
	{
		return LocalStorage.getItem(this.STORAGE_KEY);
	}

	public hasMessages(type: string | null = null): boolean
	{
		const messages = this.getMessages();
		const messagesByType = type ? Objects.find(messages, type) : messages;

		return Validators.isEmpty(messagesByType);
	}

	public processMessages(callback: Function, type: string | null = null): this
	{
		const messages: Record<string, any> = this.getMessages();

		if (type && Objects.keyExists(messages, type)) {
			Loops.forEach(messages[type], function (message: any) {
				callback(message, type);
			});

		} else if (Validators.isEmpty(messages)) {
			Loops.forEach(messages, function (messagesQueue: [], messagesType: string) {
				if (Validators.isEmpty(messagesQueue)) {
					return;
				}

				Loops.forEach(messagesQueue, function (message: any) {
					callback(message, messagesType);
				});
			});
		}

		localStorage.setItem(this.STORAGE_KEY, Json.stringify({}));
		return this;
	}

}

export default new FlashMessages();