<?php
/** @license MIT
 * Copyright 2020 J. King et al.
 * See LICENSE and AUTHORS files for details */

declare(strict_types=1);
namespace MensBeam\Url;

use Psr\Http\Message\UriInterface;

/** Normalized URI representation, compatible with the PSR-7 URI interface
 *
 * The following features are implemented:
 *
 * - The full PSR-7 `UriInterface` interface
 * - Correct handling of both URLs and URNs
 * - Relative URL resolution
 * - Encoding normalization
 * - Scheme normalization
 * - IDNA normalization
 * - IPv6 address normalization
 * - Empty query and fragment removal
 *
 * Some things this class does not do:
 *
 * - Handle non-standard schemes (e.g. ed2k)
 * - Collapse paths
 * - Drop default ports
 *
 * This class should not be used with XML namespace URIs,
 * as the normalizations performed will change the values
 * of some namespaces.
 */
class Uri extends AbstractUri implements UriInterface {
    public function getAuthority() {
        $host = $this->getHost();
        if (strlen($host) > 0) {
            $userInfo = $this->getUserInfo();
            $port = $this->getPort();
            return (strlen($userInfo) ? $userInfo."@" : "").$host.(!is_null($port) ? ":".$port : "");
        }
        return "";
    }

    public function getFragment() {
        return $this->fragment ?? "";
    }

    public function getHost() {
        return $this->host ?? "";
    }

    public function getPath() {
        return $this->path ?? "";
    }

    public function getPort() {
        return $this->port;
    }

    public function getQuery() {
        return $this->query ?? "";
    }

    public function getScheme() {
        return $this->scheme ?? "";
    }

    public function getUserInfo() {
        if (strlen($this->user ?? "")) {
            return $this->user.(strlen($this->pass ?? "") ? ":".$this->pass : "");
        }
        return "";
    }

    public function withFragment($fragment) {
        $out = clone $this;
        $out->set("fragment", $fragment);
        return $out;
    }

    public function withHost($host) {
        if ($host === "") {
            $host = null;
        }
        $out = clone $this;
        $out->set("host", $host);
        return $out;
    }

    public function withPath($path) {
        $out = clone $this;
        $out->set("path", $path);
        return $out;
    }

    public function withPort($port) {
        $out = clone $this;
        $out->set("port", $port);
        return $out;
    }

    public function withQuery($query) {
        $out = clone $this;
        $out->set("query", $query);
        return $out;
    }

    public function withScheme($scheme) {
        $out = clone $this;
        $out->set("scheme", $scheme);
        return $out;
    }

    public function withUserInfo($user, $password = null) {
        $out = clone $this;
        $out->set("user", $user);
        $out->set("pass", $password);
        return $out;
    }

    public function __get(string $name) {
        return $this->$name;
    }
}