import { URL, UrlObject } from 'url';
import Path from 'path';

// MIME type.
const LOCAL_MIME_TYPES = {
	json: 'application/json',
	xml: 'application/xml',
	html: 'text/html',
	text: 'text/plain',
	txt: 'text/plain',
	xhtml: 'application/xhtml+xml',
	xht: 'application/xhtml+xml',
	xsl: 'application/xml',
	xslt: 'application/xml',
	rss: 'application/rss+xml',
	atom: 'application/atom+xml',
	yaml: 'application/x-yaml',
	pdf: 'application/pdf',
	zip: 'application/zip',
	gzip: 'application/gzip',
	rar: 'application/x-rar-compressed',
	'7z': 'application/x-7z-compressed',
	exe: 'application/x-msdownload',
	csv: 'text/csv',
	ics: 'text/calendar',
	rtf: 'text/rtf',
	js: 'application/javascript',
	css: 'text/css',
	apng: 'image/apng',
	png: 'image/png',
	jpg: 'image/jpeg',
	jpeg: 'image/jpeg',
	gif: 'image/gif',
	bmp: 'image/bmp',
	ico: 'image/x-icon',
	tiff: 'image/tiff',
	tif: 'image/tiff',
	svg: 'image/svg+xml',
	svgz: 'image/svg+xml',
	webp: 'image/webp',
	wav: 'audio/wav',
	webm: 'video/webm',
	mp4: 'video/mp4',
	mpeg: 'video/mpeg',
	mpg: 'video/mpeg',
	mov: 'video/quicktime',
	avi: 'video/x-msvideo',
	flv: 'video/x-flv',
	mkv: 'video/x-matroska',
	mka: 'audio/x-matroska',
	m3u: 'audio/x-mpegurl',
	m3u8: 'application/x-mpegURL',
	pls: 'audio/x-scpls',
	flac: 'audio/x-flac',
	ogg: 'audio/ogg',
	oga: 'audio/ogg',
	ogv: 'video/ogg',
	ogx: 'application/ogg',
	opus: 'audio/opus',
	spx: 'audio/ogg',
	swf: 'application/x-shockwave-flash',
	woff: 'font/woff',
	woff2: 'font/woff2',
	ttf: 'font/ttf',
	eot: 'application/vnd.ms-fontobject',
	otf: 'font/otf',
	sfnt: 'application/font-sfnt',
	bin: 'application/octet-stream',
	doc: 'application/msword',
	docx: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
	xls: 'application/vnd.ms-excel',
	xlsx: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
	ppt: 'application/vnd.ms-powerpoint',
	pptx: 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
	odt: 'application/vnd.oasis.opendocument.text',
	ods: 'application/vnd.oasis.opendocument.spreadsheet'
};

/**
 * URL utility.
 */
export default class XMLHttpRequestURLUtility {
	/**
	 * Returns "true" if SSL.
	 *
	 * @param url URL.
	 * @returns "true" if SSL.
	 */
	public static isSSL(url: URL): boolean {
		return url.protocol === 'https:';
	}

	/**
	 * Returns "true" if SSL.
	 *
	 * @param url URL.
	 * @returns "true" if SSL.
	 */
	public static isLocal(url: URL): boolean {
		return url.protocol === 'file:';
	}

	/**
	 * Returns "true" if protocol is valid.
	 *
	 * @param url URL.
	 * @returns "true" if valid.
	 */
	public static isSupportedProtocol(url: URL): boolean {
		switch (url.protocol) {
			case 'https:':
			case 'http:':
			case 'file:':
			case undefined:
			case '':
				return true;
		}

		return false;
	}

	/**
	 * Returns host.
	 *
	 * @param url URL.
	 * @returns Host.
	 */
	public static getHost(url: URL): string {
		switch (url.protocol) {
			case 'http:':
			case 'https:':
				return url.hostname;
			case undefined:
			case '':
				return 'localhost';
			default:
				return null;
		}
	}

	/**
	 *
	 * @param url
	 */
	public static getMimeTypeFromExt(url: UrlObject): string {
		const extension = Path.extname(url.pathname).replace('.', '').toLowerCase();
		return LOCAL_MIME_TYPES[extension] || 'application/octet-stream';
	}
}