Telegram\Bot\Helpers\Emojify

Complexity

Total Complexity

20

Size/Duplication

Total Lines	233
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

88.46%

Importance

Changes	9
Bugs	3	Features	2

14 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	toWord()	0	4	1
A	getEmojiMap()	0	12	3
A	setupEmojiMaps()	0	5	1
A	__clone()	0	3	1
A	__wakeup()	0	3	1
A	getInstance()	0	8	2
A	setEmojiMapFile()	0	7	1
A	toEmoji()	0	4	1
A	text()	0	4	1
A	translate()	0	4	1
A	replace()	0	8	2
A	wordToEmojiReplace()	0	12	2
A	emojiToWordReplace()	0	8	2

<?php

namespace Telegram\Bot\Helpers;

use Telegram\Bot\Exceptions\TelegramEmojiMapFileNotFoundException;

class Emojify
{
    /**
     * @var Emojify The reference to *Singleton* instance of this class
     */
    private static $instance;

    /**
     * The path to the file containing the emoji map.
     *
     * @var string
     */
    const DEFAULT_EMOJI_MAP_FILE = '/../Storage/emoji.json';

    /**
     * The path to the file containing the emoji map.
     *
     * @var string
     */
    protected $emojiMapFile;

    /**
     * The array mapping words to emoji.
     *
     * @var array
     */
    protected $emojiMap;

    /**
     * The array mapping emoji back to words.
     *
     * @var array
     */
    protected $wordMap;

    /**
     * Protected Emojify constructor to prevent creating a new instance of the
     * *Singleton* via the `new` operator from outside of this class.
     *
     * @throws TelegramEmojiMapFileNotFoundException
     */
    protected function __construct()
    {
        $this->setupEmojiMaps();
    }

    /**
     * Returns the *Singleton* instance of this class.
     *
     * @return Emojify The *Singleton* instance.
     */
    public static function getInstance()
    {
        if (null === static::$instance) {

Since $instance is declared private, accessing it with static will lead to errors in possible sub-classes; consider using self, or increasing the visibility of $instance to at least protected.

            static::$instance = new static();

Since $instance is declared private, accessing it with static will lead to errors in possible sub-classes; consider using self, or increasing the visibility of $instance to at least protected.

        }

        return static::$instance;

Since $instance is declared private, accessing it with static will lead to errors in possible sub-classes; consider using self, or increasing the visibility of $instance to at least protected.

    }

    /**
     * Set File Path to Emoji Map File.
     *
     * @param string $emojiMapFile
     *
     * @return Emojify
     */
    public function setEmojiMapFile($emojiMapFile)
    {
        $this->emojiMapFile = $emojiMapFile;
        $this->setupEmojiMaps();

        return $this;
    }

    /**
     * Translate Word to Emoji
     *
     * @param $text
     *
     * @return mixed
     */
    public function toEmoji($text)
    {
        return $this->replace($text, $this->emojiMap);
    }

    /**
     * Alias of toEmoji()
     *
     * @param $text
     *
     * @return mixed
     */
    public static function text($text)
    {
        return self::getInstance()->toEmoji($text);
    }

    /**
     * Translate Emoji to Word
     *
     * @param $text
     *
     * @return mixed
     */
    public function toWord($text)
    {
        return $this->replace($text, $this->wordMap, true);
    }

    /**
     * Alias of toWord()
     *
     * @param $text
     *
     * @return mixed
     */
    public static function translate($text)
    {
        return self::getInstance()->toWord($text);
    }

    /**
     * Replace
     *
     * @param        $line
     * @param        $replace
     * @param bool   $toWord
     * @param string $delimiter
     *
     * @return mixed
     */
    protected function replace($line, $replace, $toWord = false, $delimiter = ':')
    {
        if ($toWord) {
            return $this->emojiToWordReplace($line, $replace, $delimiter);
        }

        return $this->wordToEmojiReplace($line, $replace, $delimiter);
    }

    /**
     * Finds words enclosed by the delimiter and converts them to the
     * appropriate emoji character.
     *
     * @param $line
     * @param $replace
     * @param $delimiter
     *
     * @return mixed
     */
    protected function wordToEmojiReplace($line, $replace, $delimiter)
    {
        $pattern = '/' . preg_quote($delimiter, '/') . '([^' . preg_quote($delimiter, '/') .']*)' . preg_quote($delimiter, '/') . '/';
        $line = preg_replace_callback($pattern, function ($matches) use ($replace) {
            if (array_key_exists($matches[1], $replace)) {
                return $replace[$matches[1]];
            }
            return $matches[1];
        }, $line);

        return $line;
    }

    /**
     * Finds emojis and replaces them with text enclosed by the delimiter
     *
     * @param $line
     * @param $replace
     * @param $delimiter
     *
     * @return mixed
     */
    protected function emojiToWordReplace($line, $replace, $delimiter)
    {
        foreach ($replace as $key => $value) {
            $line = str_replace($key, $delimiter.$value.$delimiter, $line);
        }

        return $line;
    }

    /**
     * Get Emoji Map Array.
     *
     * @return array
     * @throws TelegramEmojiMapFileNotFoundException
     */
    protected function getEmojiMap()
    {
        if (!isset($this->emojiMapFile)) {
            $this->emojiMapFile = realpath(__DIR__.self::DEFAULT_EMOJI_MAP_FILE);
        }

        if (!file_exists($this->emojiMapFile)) {
            throw new TelegramEmojiMapFileNotFoundException();
        }

        return json_decode(file_get_contents($this->emojiMapFile), true);
    }

    /**
     * Setup Emoji Maps.
     *
     * @throws TelegramEmojiMapFileNotFoundException
     */
    protected function setupEmojiMaps()
    {
        $this->emojiMap = $this->getEmojiMap();
        $this->wordMap = array_flip($this->emojiMap);
    }

    /**
     * Private clone method to prevent cloning of the instance of the
     * *Singleton* instance.
     *
     * @return void
     */
    private function __clone()
    {
    }

    /**
     * Private unserialize method to prevent unserializing of the *Singleton*
     * instance.
     *
     * @return void
     */
    private function __wakeup()
    {
    }
}