simple-speak shortcode plugin for WordPress | MIT License — https://github.com/nfreear/simple-speak

wordpress.simple-speak-plugin.php

<?php namespace Nfreear\WordPress\Plugins\Simple_Speak;

/**
 * Plugin Name: simple-speak
 * Plugin URI:  https://github.com/nfreear/simple-speak
 * Description: Shortcodes for text-to-speech and spelling ~ [speak] Hello [/speak] & [spell] Spell me! [/spell].
 * Author:      Nick Freear
 * Author URI:  https://twitter.com/nfreear
 * Version:     1.1-alpha
 *
 * @license     https://nfreear.mit-license.org MIT License
 * @copyright   © 2017 Nick Freear
 * @author      Nick Freear, 15-June-2017.
 */

class Simple_Speak_Plugin {

    const SHORTCODE = 'speak';
    const SHORTCODE_SPELL = 'spell';

    const TEMPLATE  = "<div id='id-simple-speak' data-simple-speak='%s'>%s</div>" . PHP_EOL;
    const VERSION   = '1.3.0-beta';
    const SCRIPT_URL= 'https://unpkg.co/simple-speak@%s#._.js';

    public function __construct() {
        add_shortcode( self::SHORTCODE, [ &$this, 'shortcode' ] );
        add_shortcode( self::SHORTCODE_SPELL, [ &$this, 'shortcode_spell' ] );
        add_action( 'wp_enqueue_scripts', [ &$this, 'enqueue_scripts' ] );
    }

    public function shortcode( $attrs = [], $content = null, $ss_mode = null ) {
        $lang = get_locale();  // https://codex.wordpress.org/Function_Reference/get_locale
        $inp = (object) shortcode_atts( [
            'mode' => $ss_mode,
            'voiceFamily'  => null,
            'rate' => 1,
            'lang' => str_replace( '_', '-', $lang ),
            'client' => 'WordPress/' . get_bloginfo( 'version' ),
        ], $attrs );

        $json_attr = json_encode( $inp );

        return sprintf( self::TEMPLATE, $json_attr, $content );
    }

    public function shortcode_spell( $attrs = [], $content = null ) {
        return $this->shortcode( $attrs, $content, 'spell' );
    }

    public function enqueue_scripts() {
        $version = get_option( 'simple_speak_version', self::VERSION );
        $script_url = sprintf( self::SCRIPT_URL, $version );

        self::debug([ 'fn' => __FUNCTION__, 'simple_speak_version' => $version ]);

        return wp_enqueue_script( 'simple-speak-plugin', $script_url, [ 'jquery' ], $ver = null, $in_footer = true );
    }

    public static function debug( $obj ) {
        static $count = 0;
        $str = sprintf( 'X-simple-speak-plugin-%02d: %s', $count, json_encode( $obj ) );
        if (headers_sent()) {
            echo "<!-- $str -->";
        } else {
            header($str);
        }
        $count++;
    }
}

$wp_plugin = new Simple_Speak_Plugin();

// End.