import * as DataEvent from '../../src/com/events/DataEvent';
import fs from 'fs-extra';
const config = require('../../site/tags.json');
const _ = require('lodash');

export default class Settings {
	//--------------------------
	// constructor
	//--------------------------
	constructor() {}
	//--------------------------
	// methods
	//--------------------------
	saveTags(tags) {
		return new Promise((resolve, reject) => {
			if (!_.isEqual(config.tags, tags)) {
				config.tags = tags;
				fs.writeJson('site/tags.json', config)
					.then(() => {
						let response = {
							type: DataEvent.SETTINGS_UPDATED,
							message: 'Settings Saved'
						};
						resolve(response);
					})
					.catch(err => {
						reject(err);
					});
			} else {
				let response = {
					type: DataEvent.SETTINGS_NOT_UPDATED,
					message: 'Settings Already Saved'
				};
				resolve(response);
			}
		});
	}

	updatePageIndex() {
		fs.readJSON('site/settings.json').then(settings => {
			settings.library_stats.current_index = ++settings.library_stats.current_index;
			//settings.library_stats.total_pages = ++settings.library_stats.total_pages;
			fs.writeJSON('site/settings.json', settings);
		});
	}

	//--------------------------
	// event handlers
	//--------------------------
}