AlecRabbit\Spinner\Core\Spinner

Complexity

Total Complexity

44

Size/Duplication

Total Lines	270
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	42
Bugs	0	Features	0

17 Methods

Rating	Name	Duplication	Size	Complexity
A	updateInlinePaddingStrProperties()	0	4	3
A	__construct()	0	18	1
A	calcEraseSequence()	0	15	2
A	progress()	0	4	1
A	initJugglers()	0	11	3
A	inline()	0	5	1
A	begin()	0	17	5
A	spin()	0	8	2
A	setMessage()	0	15	4
A	last()	0	11	3
A	erase()	0	11	3
A	end()	0	13	4
A	refineColor()	0	6	3
A	setProgress()	0	12	4
A	prepareLastSpinnerString()	0	17	3
A	message()	0	4	1
A	getOutput()	0	3	1

<?php declare(strict_types=1);

namespace AlecRabbit\Spinner\Core;

use AlecRabbit\Cli\Tools\Core\Terminal;
use AlecRabbit\Cli\Tools\Cursor;
use AlecRabbit\Spinner\Core\Coloring\Colors;
use AlecRabbit\Spinner\Core\Contracts\OutputInterface;
use AlecRabbit\Spinner\Core\Contracts\SpinnerInterface;
use AlecRabbit\Spinner\Core\Jugglers\Contracts\JugglerInterface;
use AlecRabbit\Spinner\Core\Jugglers\FrameJuggler;
use AlecRabbit\Spinner\Core\Jugglers\MessageJuggler;
use AlecRabbit\Spinner\Core\Jugglers\ProgressJuggler;
use AlecRabbit\Spinner\Settings\Contracts\Defaults;
use AlecRabbit\Spinner\Settings\Settings;
use const AlecRabbit\ESC;
use const AlecRabbit\NO_COLOR_TERMINAL;

abstract class Spinner extends SpinnerCore
{
    /** @var Settings */
    protected $settings;
    /** @var bool */
    protected $inline = false;
    /** @var null|MessageJuggler */
    protected $messageJuggler;
    /** @var null|FrameJuggler */
    protected $frameJuggler;
    /** @var null|ProgressJuggler */
    protected $progressJuggler;
    /** @var string */
    protected $moveCursorBackSequence = self::EMPTY_STRING;
    /** @var string */
    protected $eraseBySpacesSequence = self::EMPTY_STRING;
    /** @var int */
    protected $previousErasingLength = 0;
    /** @var Colors */
    protected $coloring;
    /** @var null[]|JugglerInterface[] */
    protected $jugglers = [];
    /** @var string */
    protected $lastSpinnerString = self::EMPTY_STRING;
    /** @var string */
    protected $inlinePaddingStr = self::EMPTY_STRING;
    /** @var bool */
    protected $hideCursor;
    /** @var int */
    protected $inlinePaddingStrLength;
    /** @var string */
    protected $inlinePaddingStrValue;

    /**
     * Spinner constructor.
     *
     * @param null|string|Settings $messageOrSettings
     * @param null|false|OutputInterface $output
     * @param null|int $color
     */
    public function __construct($messageOrSettings = null, $output = null, ?int $color = null)
    {
        $this->output = $this->refineOutput($output);
        $this->settings = $this->refineSettings($messageOrSettings);
        $this->interval = $this->settings->getInterval();
        $this->hideCursor = $this->settings->getHideCursor();
        $this->enabled = $this->settings->isEnabled();
        $this->inlinePaddingStrValue = $this->settings->getInlinePaddingStr();
        $this->updateInlinePaddingStrProperties();
        $this->coloring = new Colors($this->settings->getStyles(), $this->refineColor($color));
        $jugglerOrder = $this->settings->getJugglersOrder();
        $this->jugglers = [
            $jugglerOrder[0] => &$this->frameJuggler,
            $jugglerOrder[1] => &$this->messageJuggler,
            $jugglerOrder[2] => &$this->progressJuggler,
        ];
        ksort($this->jugglers);
        $this->initJugglers();
    }

    /**
     * @param null|int $color
     * @return int
     */
    protected function refineColor(?int $color): int
    {
        if (null === $color && $this->output instanceof OutputInterface) {
            $color = Terminal::colorSupport($this->output->getStream());
        }
        return $color ?? NO_COLOR_TERMINAL;
    }

    protected function initJugglers(): void
    {
        $frames = $this->settings->getFrames();
        if (!empty($frames)) {
            $this->frameJuggler =
                new FrameJuggler($this->settings, $this->coloring->getFrameStyles());
        }

        $message = $this->settings->getMessage();
        if (self::EMPTY_STRING !== $message) {
            $this->setMessage($message);
        }
    }

    /**
     * @param null|string $message
     */
    protected function setMessage(?string $message): void
    {
        $this->settings->setMessage($message);

        if ($this->messageJuggler instanceof MessageJuggler) {
            if (null === $message) {
                $this->messageJuggler = null;
            } else {
                $this->messageJuggler->setMessage($message);
            }
        } else {
            $this->messageJuggler =
                null === $message ?
                    null :
                    new MessageJuggler($this->settings, $this->coloring->getMessageStyles());
        }
    }

    /** {@inheritDoc} */
    public function end(?string $finalMessage = null): string
    {
        if (!$this->enabled) {
            return self::EMPTY_STRING;
        }
        $finalMessage = (string)$finalMessage;
        $showCursor = $this->hideCursor ? Cursor::show() : self::EMPTY_STRING;
        if ($this->output instanceof OutputInterface) {
            $this->erase();
            $this->output->write($showCursor . $this->inlinePaddingStr . $finalMessage);
            return self::EMPTY_STRING;
        }
        return $this->erase() . $showCursor . $this->inlinePaddingStr . $finalMessage;
    }

    /** {@inheritDoc} */
    public function erase(): string
    {
        if (!$this->enabled) {
            return self::EMPTY_STRING;
        }
        $str = $this->eraseBySpacesSequence . $this->moveCursorBackSequence;
        if ($this->output instanceof OutputInterface) {
            $this->output->write($str);
            return self::EMPTY_STRING;
        }
        return $str;
    }

    /** {@inheritDoc} */
    public function getOutput(): ?OutputInterface
    {
        return $this->output;
    }

    public function inline(bool $inline): SpinnerInterface
    {
        $this->inline = $inline;
        $this->updateInlinePaddingStrProperties();
        return $this;
    }

    /** {@inheritDoc} */
    public function message(?string $message): self
    {
        $this->setMessage($message);
        return $this;
    }

    public function progress(?float $percent): self
    {
        $this->setProgress($percent);
        return $this;
    }

    /**
     * @param null|float $percent
     */
    protected function setProgress(?float $percent = null): void
    {
        $this->settings->setInitialPercent($percent);
        if ($this->progressJuggler instanceof ProgressJuggler) {
            if (null === $percent) {
                $this->progressJuggler = null;
            } else {
                $this->progressJuggler->setProgress($percent);
            }
        } else {
            $this->progressJuggler =
                null === $percent ? null : new ProgressJuggler($this->settings, $this->coloring->getProgressStyles());
        }
    }

    /** {@inheritDoc} */
    public function begin(?float $percent = null): string
    {
        if (!$this->enabled) {
            return self::EMPTY_STRING;
        }
        if (null === $percent) {
            $this->progressJuggler = null;
        } else {
            $this->setProgress($percent);
        }
        $hideCursor = $this->hideCursor ? Cursor::hide() : self::EMPTY_STRING;
        if ($this->output instanceof OutputInterface) {
            $this->output->write($hideCursor);
            $this->spin();
            return self::EMPTY_STRING;
        }
        return $hideCursor . $this->spin();
    }

    /** {@inheritDoc} */
    public function spin(): string
    {
        if (!$this->enabled) {
            return self::EMPTY_STRING;
        }
        $this->lastSpinnerString = $this->prepareLastSpinnerString();
        return
            $this->last();
    }

    protected function prepareLastSpinnerString(): string
    {
//        $start = hrtime(true);
        $str = '';
        $erasingLength = 0;
        foreach ($this->jugglers as $juggler) {
            if ($juggler instanceof JugglerInterface) {
                $str .= $juggler->getStyledFrame();
                $erasingLength += $juggler->getFrameErasingLength();
            }
        }
        $erasingLength += $this->inlinePaddingStrLength;
        $eraseTailBySpacesSequence = $this->calcEraseSequence($erasingLength);

        $str = $this->inlinePaddingStr . $str . $eraseTailBySpacesSequence . $this->moveCursorBackSequence;
//        dump(hrtime(true) - $start);
        return $str;
    }

    /** {@inheritDoc} */
    public function last(): string
    {
        if (!$this->enabled) {
            return self::EMPTY_STRING;
        }
        if ($this->output instanceof OutputInterface) {
            $this->output->write($this->lastSpinnerString);
            return self::EMPTY_STRING;
        }
        return
            $this->lastSpinnerString;
    }

    protected function updateInlinePaddingStrProperties(): void
    {
        $this->inlinePaddingStr = $this->inline ? $this->inlinePaddingStrValue : self::EMPTY_STRING;
        $this->inlinePaddingStrLength = $this->inline ? strlen($this->inlinePaddingStr) : 0;
    }

    /**
     * @param int $erasingLength
     * @return string
     */
    protected function calcEraseSequence(int $erasingLength): string
    {
        $eraseTailBySpacesSequence = '';

        $erasingLengthDelta = $this->previousErasingLength - $erasingLength;
        $this->previousErasingLength = $erasingLength;

        if ($erasingLengthDelta > 0) {
            $erasingLength += $erasingLengthDelta;
            $eraseTailBySpacesSequence = str_repeat(Defaults::ONE_SPACE_SYMBOL, $erasingLengthDelta);
        }
        $this->eraseBySpacesSequence = str_repeat(Defaults::ONE_SPACE_SYMBOL, $erasingLength);
        $this->moveCursorBackSequence = ESC . "[{$erasingLength}D";

        return $eraseTailBySpacesSequence;
    }
}