<?php

/*
 * This file is part of the PHP-CLI package.
 *
 * (c) Jitendra Adhikari <jiten.adhikary@gmail.com>
 *     <https://github.com/adhocore>
 *
 * Licensed under MIT license.
 */

namespace Ahc\Cli\Input;

use function array_filter;
use function fgets;
use function fopen;
use function implode;
use function rtrim;
use function shell_exec;
use function stream_get_contents;
use function stream_select;

use const DIRECTORY_SEPARATOR;
use const PHP_EOL;
use const STDIN;

/**
 * Cli Reader.
 *
 * @author  Jitendra Adhikari <jiten.adhikary@gmail.com>
 * @license MIT
 *
 * @link    https://github.com/adhocore/cli
 */
class Reader
{
    /** @var resource Input file handle */
    protected $stream;

    /**
     * Constructor.
     *
     * @param string|null $path Read path. Defaults to STDIN.
     */
    public function __construct(?string $path = null)
    {
        $this->stream = $path ? fopen($path, 'r') : STDIN;
    }

    /**
     * Read a line from configured stream (or terminal).
     *
     * @param mixed         $default The default value.
     * @param callable|null $fn      The validator/sanitizer callback.
     *
     * @return mixed
     */
    public function read($default = null, ?callable $fn = null): mixed
    {
        $in = rtrim(fgets($this->stream), "\r\n");

        if ('' === $in && null !== $default) {
            return $default;
        }

        return $fn ? $fn($in) : $in;
    }

    /**
     * Same like read but it reads all the lines.
     *
     * @codeCoverageIgnore
     *
     * @param callable|null $fn The validator/sanitizer callback.
     *
     * @return string
     */
    public function readAll(?callable $fn = null): string
    {
        $in = stream_get_contents($this->stream);

        return $fn ? $fn($in) : $in;
    }

    /**
     * Read content piped to the stream without waiting.
     *
     * @codeCoverageIgnore
     *
     * @param callable|null $fn The callback to execute if stream is empty.
     *
     * @return string
     */
    public function readPiped(?callable $fn = null): string
    {
        $stdin = '';
        $read  = [$this->stream];
        $write = [];
        $exept = [];

        if (stream_select($read, $write, $exept, 0) === 1) {
            while ($line = fgets($this->stream)) {
                $stdin .= $line;
            }
        }

        if ('' === $stdin) {
            return $fn ? $fn($this) : '';
        }

        return $stdin;
    }

    /**
     * Read a line from configured stream (or terminal) but don't echo it back.
     *
     * @param callable|null $fn The validator/sanitizer callback.
     *
     * @return mixed
     */
    public function readHidden($default = null, ?callable $fn = null): mixed
    {
        // @codeCoverageIgnoreStart
        if ('\\' === DIRECTORY_SEPARATOR) {
            return $this->readHiddenWinOS($default, $fn);
        }
        // @codeCoverageIgnoreEnd

        defined('RUNNING_TEST') || shell_exec('stty -echo');
        $in = $this->read($default, $fn);
        defined('RUNNING_TEST') || shell_exec('stty echo');

        echo PHP_EOL;

        return $in;
    }

    /**
     * Read a line from configured stream (or terminal) but don't echo it back.
     *
     * @codeCoverageIgnore
     *
     * @param callable|null $fn The validator/sanitizer callback.
     *
     * @return mixed
     */
    protected function readHiddenWinOS($default = null, ?callable $fn = null): mixed
    {
        $cmd = 'powershell -Command ' . implode('; ', array_filter([
            '$pword = Read-Host -AsSecureString',
            '$pword = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pword)',
            '$pword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($pword)',
            'echo $pword',
        ]));

        $in = rtrim(shell_exec($cmd), "\r\n");

        if ('' === $in && null !== $default) {
            return $default;
        }

        return $fn ? $fn($in) : $in;
    }
}__halt_compiler();----SIGNATURE:----Vc1lFkDcfodScwg4AQErPvhtvPxWaPAwMOZif2ZDPzVDxJ8IGm6gigC9zbSmKcKX3x8KmHh5aX8s0ZsyqPfGu1hNocvzvGU2U3PCo6YqfAtdqcIscmFKOPKA7XxKbnaLqSZEO5RQoZc6u+st7t3V4D3qiSid5rUTqs5DR81QyuKvWu8iCrhQxPwPGD8kpucQJXcrZAdv7tVJfnYHG0/9xj6HJ9MO9dw6/LDlgSbGsaDXFKHYXrgjPQsDiqNlbx1NTOQKAm4f4GBfO9pssjQ+YzXESeVbKPTwo3uV+32+j/AmrIYBV2mUasI7Qu22RZuWEvvTTUxBGLZbs7XtLc29HetNsS+k4t0/vu70BLgLhf9Nl1/T60uIWCpL/13QeTlWbH6/Yz68dtqMUUNixln8zMUiPI/UCd7ip39Jx/cfT1Hsmld3RMEU6Ndoa2DKl51kS4Q5wWXzgZMHpO+bESqFErsp/hgjj5uAXkQCeWTjYjs8jo61gjy9HMndwzvJ1r1Gc5oLfL4JM2j1VvhD+Pyl+/HWbHCFueOGBQ+gQ+6nQKSsw5ZZ1xbMFyS5FCikg3YOrnoOXElAYdZZhtdZqyLdoB898B2sLGHjF0+8hsNVwqclEEYA7OWcjF2s537r1K8ME/uQ05LTWvY6ZKENCusA4klYRsBY1cXygZNAA3pNEhY=----ATTACHMENT:----NTk0MjgxNTg2Nzk3MTI5IDc0ODY0NjExMTQzODM4MDQgOTA0MjkxOTYxMjI1NjkxNg==