"use strict";
const hasToStringTag = require("has-to-string-tag-x");
const isObject = require("is-object");

const toString = Object.prototype.toString;
const urlClass = "[object URL]";

const hash = "hash";
const host = "host";
const hostname = "hostname";
const href = "href";
const password = "password";
const pathname = "pathname";
const port = "port";
const protocol = "protocol";
const search = "search";
const username = "username";



const isURL = (url, supportIncomplete/*=false*/) =>
{
	if (!isObject(url)) return false;

	// Native implementation in older browsers
	if (!hasToStringTag && toString.call(url) === urlClass) return true;

	if (!(href     in url)) return false;
	if (!(protocol in url)) return false;
	if (!(username in url)) return false;
	if (!(password in url)) return false;
	if (!(hostname in url)) return false;
	if (!(port     in url)) return false;
	if (!(host     in url)) return false;
	if (!(pathname in url)) return false;
	if (!(search   in url)) return false;
	if (!(hash     in url)) return false;

	if (supportIncomplete !== true)
	{
		if (!isObject(url.searchParams)) return false;

		// TODO :: write a separate isURLSearchParams ?
	}

	return true;
}



isURL.lenient = url =>
{
	return isURL(url, true);
};



module.exports = isURL;