<?php

namespace Ulmus\Api\Common;

use Psr\Http\Message\UriInterface;

class Uri implements UriInterface
{
    public const IGNORE_HTTP_PORT = [ 80, 443 ];

    protected string $scheme;

    protected null|string $user;

    protected null|string $password;

    protected string $host;

    protected null|int $port;

    protected null|string $path;

    protected null|array $query;

    protected null|string $fragment;

    public function __construct(?string $uri = null)
    {
        $this->parse($uri);
    }

    public static function from(string|UriInterface $uri = "") : UriInterface
    {
        if ($uri instanceof UriInterface) {
            return $uri;
        }

        return new static($uri);
    }

    protected function parse(string $uri): void
    {
        if (false === $parts = parse_url($uri)) {
            throw new \InvalidArgumentException(sprintf("Malformed URIs was provided (%s)", $uri));
        }

        $this->setScheme($parts['scheme'] ?? "");
        $this->setUserInfo($parts['user'] ?? null, $parts['pass'] ?? null);
        $this->setHost($parts['host'] ?? "");
        $this->setPort($parts['port'] ?? null);
        $this->setPath($parts['path'] ?? null);
        $this->setQuery($parts['query'] ?? []);
        $this->setFragment($parts['fragment'] ?? null);
    }

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

    public function renderScheme() : string
    {
        return $this->scheme ? "{$this->scheme}:" : "";
    }

    protected function setScheme(string $scheme) : self
    {
        $this->scheme = $scheme;

        return $this;
    }

    public function getAuthority() : string
    {
        return implode('', array_filter([
            $this->getHost(), $this->renderUserInfo(), $this->renderPort(), $this->renderFragment()
        ]));
    }

    public function renderAuthority() : string
    {
        $authority = $this->getAuthority();

        return $authority ? "//{$authority}" : $authority;
    }

    public function getUserInfo() : string
    {
        return $this->user . ( $this->password ? ":{$this->password}" : "" );
    }

    public function renderUserInfo() : string
    {
        return ( $info = $this->getUserInfo() ) ? "{$info}@" : "";
    }

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

    protected function setHost(string $host) : static
    {
        $this->host = $host;

        return $this;
    }

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

    public function renderPort(array $ignore = self::IGNORE_HTTP_PORT) : string
    {
        $port = $this->getPort();

        return $port && ! in_array($port, $ignore) ? ":{$port}" : "";
    }

    public function getPath()
    {
        $path = implode('/', array_map('rawurlencode', explode('/', $this->path)));

        return str_starts_with($this->path, '/') ? '/' . ltrim($this->path, '/.') : $this->path;
    }

    public function renderPath() : string
    {
        return $this->getPath();
    }

    public function getQuery()
    {
        return http_build_query($this->query, "", null,  PHP_QUERY_RFC3986);
    }

    public function renderQuery() : string
    {
        $query = $this->getQuery();

        return $query ? "?{$query}" : "";
    }

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

    public function renderFragment() : string
    {
        return $this->getFragment();
    }

    public function withScheme($scheme)
    {
        return (clone $this)->setScheme($scheme);
    }

    public function withUserInfo($user, $password = null)
    {
        return (clone $this)->setUserInfo($user, $password);
    }

    protected function setUserInfo(null|string $user, null|string $password) : static
    {
        $this->user = $user;
        $this->password = $password;

        return $this;
    }

    public function withHost($host)
    {
        return (clone $this)->setHost($host);
    }

    public function withPort($port)
    {
        return (clone $this)->setPort($port);
    }

    protected function setPort(null|int $port) : static
    {
        $this->port = $port;

        return $this;
    }

    public function withPath($path)
    {
        return (clone $this)->setPath($path);
    }

    protected function setPath(null|string $path) : static
    {
        $this->path = $path;

        return $this;
    }

    public function withQuery($query)
    {
        return $this->setQuery($query);
    }

    protected function setQuery(null|array|string $query) : static
    {
        if (is_string($query)) {
            parse_str($query, $parsed);
        }

        $this->query = $parsed ?? $query;

        return $this;
    }

    public function withFragment($fragment)
    {
        return (clone $this)->setFragment($fragment);
    }

    protected function setFragment(null|string $fragment) : static
    {
        $this->fragment = $fragment;

        return $this;
    }

    public function __toString()
    {
        return $this->render();
    }

    public function render() : string
    {
        return implode('', array_filter([
            $this->renderScheme(), $this->renderAuthority(), $this->renderPath(), $this->renderQuery(), $this->renderFragment()
        ]));
    }
}