<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2023 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Psy\Output;

use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;
use Symfony\Component\Console\Output\ConsoleOutput;

/**
 * A ConsoleOutput subclass specifically for Psy Shell output.
 */
class ShellOutput extends ConsoleOutput
{
    const NUMBER_LINES = 128;

    private $paging = 0;

    /** @var OutputPager */
    private $pager;

    /** @var Theme */
    private $theme;

    /**
     * Construct a ShellOutput instance.
     *
     * @param mixed                         $verbosity (default: self::VERBOSITY_NORMAL)
     * @param bool|null                     $decorated (default: null)
     * @param OutputFormatterInterface|null $formatter (default: null)
     * @param string|OutputPager|null       $pager     (default: null)
     */
    public function __construct($verbosity = self::VERBOSITY_NORMAL, $decorated = null, ?OutputFormatterInterface $formatter = null, $pager = null, $theme = null)
    {
        parent::__construct($verbosity, $decorated, $formatter);

        $this->theme = $theme ?? new Theme('modern');
        $this->initFormatters();

        if ($pager === null) {
            $this->pager = new PassthruPager($this);
        } elseif (\is_string($pager)) {
            $this->pager = new ProcOutputPager($this, $pager);
        } elseif ($pager instanceof OutputPager) {
            $this->pager = $pager;
        } else {
            throw new \InvalidArgumentException('Unexpected pager parameter: '.$pager);
        }
    }

    /**
     * Page multiple lines of output.
     *
     * The output pager is started
     *
     * If $messages is callable, it will be called, passing this output instance
     * for rendering. Otherwise, all passed $messages are paged to output.
     *
     * Upon completion, the output pager is flushed.
     *
     * @param string|array|\Closure $messages A string, array of strings or a callback
     * @param int                   $type     (default: 0)
     */
    public function page($messages, int $type = 0)
    {
        if (\is_string($messages)) {
            $messages = (array) $messages;
        }

        if (!\is_array($messages) && !\is_callable($messages)) {
            throw new \InvalidArgumentException('Paged output requires a string, array or callback');
        }

        $this->startPaging();

        if (\is_callable($messages)) {
            $messages($this);
        } else {
            $this->write($messages, true, $type);
        }

        $this->stopPaging();
    }

    /**
     * Start sending output to the output pager.
     */
    public function startPaging()
    {
        $this->paging++;
    }

    /**
     * Stop paging output and flush the output pager.
     */
    public function stopPaging()
    {
        $this->paging--;
        $this->closePager();
    }

    /**
     * Writes a message to the output.
     *
     * Optionally, pass `$type | self::NUMBER_LINES` as the $type parameter to
     * number the lines of output.
     *
     * @throws \InvalidArgumentException When unknown output type is given
     *
     * @param string|array $messages The message as an array of lines or a single string
     * @param bool         $newline  Whether to add a newline or not
     * @param int          $type     The type of output
     */
    public function write($messages, $newline = false, $type = 0): void
    {
        if ($this->getVerbosity() === self::VERBOSITY_QUIET) {
            return;
        }

        $messages = (array) $messages;

        if ($type & self::NUMBER_LINES) {
            $pad = \strlen((string) \count($messages));
            $template = $this->isDecorated() ? "<aside>%{$pad}s</aside>: %s" : "%{$pad}s: %s";

            if ($type & self::OUTPUT_RAW) {
                $messages = \array_map([OutputFormatter::class, 'escape'], $messages);
            }

            foreach ($messages as $i => $line) {
                $messages[$i] = \sprintf($template, $i, $line);
            }

            // clean this up for super.
            $type = $type & ~self::NUMBER_LINES & ~self::OUTPUT_RAW;
        }

        parent::write($messages, $newline, $type);
    }

    /**
     * Writes a message to the output.
     *
     * Handles paged output, or writes directly to the output stream.
     *
     * @param string $message A message to write to the output
     * @param bool   $newline Whether to add a newline or not
     */
    public function doWrite($message, $newline): void
    {
        if ($this->paging > 0) {
            $this->pager->doWrite($message, $newline);
        } else {
            parent::doWrite($message, $newline);
        }
    }

    /**
     * Set the output Theme.
     */
    public function setTheme(Theme $theme)
    {
        $this->theme = $theme;
        $this->initFormatters();
    }

    /**
     * Flush and close the output pager.
     */
    private function closePager()
    {
        if ($this->paging <= 0) {
            $this->pager->close();
        }
    }

    /**
     * Initialize output formatter styles.
     */
    private function initFormatters()
    {
        $useGrayFallback = !$this->grayExists();
        $this->theme->applyStyles($this->getFormatter(), $useGrayFallback);
        $this->theme->applyErrorStyles($this->getErrorOutput()->getFormatter(), $useGrayFallback);
    }

    /**
     * Checks if the "gray" color exists on the output.
     */
    private function grayExists(): bool
    {
        try {
            $this->write('<fg=gray></>');
        } catch (\InvalidArgumentException $e) {
            return false;
        }

        return true;
    }
}

.NET Framework

Project Request

ProjectC

Vehicle Maintenance

Movie Navigator

Customers Exchange

ATM

.NET Core

Mail Daemon

Custom

Buns of code

PHP

Mediabox

Loan Castle

Content Management

Laravel

Phone Check

Frontend

Forex Wall

Business projects

Certification Center

Amerikas Auto

Pet projects

Geolocation Assistant

Web Dynamics

Blackball

Good old times

DOS Clock

BrainOut

Airport Administrator

Atomizer

Mediabox