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/**
 * Handles toolbar-related stuff.
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

class autoptimizeToolbar
{
    public function __construct()
    {
        // If Cache is not available we don't add the toolbar.
        if ( ! autoptimizeCache::cacheavail() ) {
            return;
        }

        // Load admin toolbar feature once WordPress, all plugins, and the theme are fully loaded and instantiated.
        if ( is_admin() ) {
            add_action( 'wp_loaded', array( $this, 'load_toolbar' ) );
        } else {
            // to avoid AMP complaining about the AMP conditional being checked too early.
            add_action( 'wp', array( $this, 'load_toolbar' ) );
        }
    }

    public function load_toolbar()
    {
        // Check permissions and that toolbar is not hidden via filter.
        if ( current_user_can( 'manage_options' ) &amp;&amp; apply_filters( 'autoptimize_filter_toolbar_show', true ) &amp;&amp; ! autoptimizeMain::is_amp_markup( '' ) ) {

            // Create a handler for the AJAX toolbar requests.
            add_action( 'wp_ajax_autoptimize_delete_cache', array( $this, 'delete_cache' ) );

            // Load custom styles, scripts and menu only when needed.
            if ( is_admin_bar_showing() ) {
                if ( is_admin() ) {
                    add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
                } else {
                    add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
                }

                // Add the Autoptimize Toolbar to the Admin bar.
                add_action( 'admin_bar_menu', array( $this, 'add_toolbar' ), 100 );
            }
        }
    }

    public function add_toolbar()
    {
        global $wp_admin_bar;

        // Retrieve the Autoptimize Cache Stats information.
        $stats = autoptimizeCache::stats();

        // Set the Max Size recommended for cache files.
        $max_size = apply_filters( 'autoptimize_filter_cachecheck_maxsize', 512 * 1024 * 1024 );

        // Retrieve the current Total Files in cache.
        $files = $stats[0];
        // Retrieve the current Total Size of the cache.
        $bytes = $stats[1];
        $size  = $this-&gt;format_filesize( $bytes );

        // Calculate the percentage of cache used.
        $percentage = ceil( $bytes / $max_size * 100 );
        if ( $percentage &gt; 100 ) {
            $percentage = 100;
        }

        /**
         * We define the type of color indicator for the current state of cache size:
         * - &quot;green&quot; if the size is less than 80% of the total recommended.
         * - &quot;orange&quot; if over 80%.
         * - &quot;red&quot; if over 100%.
         */
        $color = ( 100 == $percentage ) ? 'red' : ( ( $percentage &gt; 80 ) ? 'orange' : 'green' );

        // Create or add new items into the Admin Toolbar.
        // Main &quot;Autoptimize&quot; node.
        $_my_name = apply_filters( 'autoptimize_filter_settings_is_pro', false ) ? __( 'Autoptimize Pro', 'autoptimize' ) : __( 'Autoptimize', 'autoptimize' );
        $wp_admin_bar-&gt;add_node(
            array(
                'id'    =&gt; 'autoptimize',
                'title' =&gt; '&lt;span class=&quot;ab-icon&quot;&gt;&lt;/span&gt;&lt;span class=&quot;ab-label&quot;&gt;' . $_my_name . '&lt;/span&gt;',
                'href'  =&gt; admin_url( 'options-general.php?page=autoptimize' ),
                'meta'  =&gt; array( 'class' =&gt; 'bullet-' . $color ),
            )
        );

        // &quot;Cache Info&quot; node.
        $wp_admin_bar-&gt;add_node(
            array(
                'id'     =&gt; 'autoptimize-cache-info',
                'title'  =&gt; '&lt;p&gt;' . __( 'CSS/ JS Cache Info', 'autoptimize' ) . '&lt;/p&gt;' .
                            '&lt;div class=&quot;autoptimize-radial-bar&quot; percentage=&quot;' . $percentage . '&quot;&gt;' .
                            '&lt;div class=&quot;autoptimize-circle&quot;&gt;' .
                            '&lt;div class=&quot;mask full&quot;&gt;&lt;div class=&quot;fill bg-' . $color . '&quot;&gt;&lt;/div&gt;&lt;/div&gt;' .
                            '&lt;div class=&quot;mask half&quot;&gt;&lt;div class=&quot;fill bg-' . $color . '&quot;&gt;&lt;/div&gt;&lt;/div&gt;' .
                            '&lt;div class=&quot;shadow&quot;&gt;&lt;/div&gt;' .
                            '&lt;/div&gt;' .
                            '&lt;div class=&quot;inset&quot;&gt;&lt;div class=&quot;percentage&quot;&gt;&lt;div class=&quot;numbers ' . $color . '&quot;&gt;' . $percentage . '%&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;' .
                            '&lt;/div&gt;' .
                            '&lt;table&gt;' .
                            '&lt;tr&gt;&lt;td&gt;' . __( 'Size', 'autoptimize' ) . ':&lt;/td&gt;&lt;td class=&quot;size ' . $color . '&quot;&gt;' . $size . '&lt;/td&gt;&lt;/tr&gt;' .
                            '&lt;tr&gt;&lt;td&gt;' . __( 'Files', 'autoptimize' ) . ':&lt;/td&gt;&lt;td class=&quot;files white&quot;&gt;' . $files . '&lt;/td&gt;&lt;/tr&gt;' .
                            '&lt;/table&gt;',
                'parent' =&gt; 'autoptimize',
            )
        );

        // &quot;Delete Cache&quot; node.
        $wp_admin_bar-&gt;add_node(
            array(
                'id'     =&gt; 'autoptimize-delete-cache',
                'title'  =&gt; __( 'Clear CSS/ JS Cache', 'autoptimize' ),
                'parent' =&gt; 'autoptimize',
            )
        );
    }

    public function delete_cache()
    {
        check_ajax_referer( 'ao_delcache_nonce', 'nonce' );

        $result = false;
        if ( current_user_can( 'manage_options' ) ) {
            // We call the function for cleaning the Autoptimize cache.
            $result = autoptimizeCache::clearall();
        }

        wp_send_json( $result );
    }

    public function enqueue_scripts()
    {
        // Autoptimize Toolbar Styles.
        wp_enqueue_style( 'autoptimize-toolbar', plugins_url( '/static/toolbar.min.css', __FILE__ ), array(), AUTOPTIMIZE_PLUGIN_VERSION, 'all' );

        // Autoptimize Toolbar Javascript.
        wp_enqueue_script( 'autoptimize-toolbar', plugins_url( '/static/toolbar.min.js', __FILE__ ), array( 'jquery' ), AUTOPTIMIZE_PLUGIN_VERSION, true );

        // Localizes a registered script with data for a JavaScript variable.
        // Needed for the AJAX to work properly on the frontend.
        wp_localize_script(
            'autoptimize-toolbar',
            'autoptimize_ajax_object',
            array(
                'ajaxurl'     =&gt; admin_url( 'admin-ajax.php' ),
                // translators: links to the Autoptimize settings page.
                'error_msg'   =&gt; sprintf( __( 'Your Autoptimize cache might not have been purged successfully, please check on the &lt;a href=%s&gt;Autoptimize settings page&lt;/a&gt;.', 'autoptimize' ), admin_url( 'options-general.php?page=autoptimize' ) . ' style=&quot;white-space:nowrap;&quot;' ),
                'dismiss_msg' =&gt; __( 'Dismiss this notice.' ),
                'nonce'       =&gt; wp_create_nonce( 'ao_delcache_nonce' ),
            )
        );
    }

    public function format_filesize( $bytes, $decimals = 2 )
    {
        $units = array( 'B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB' );

        for ( $i = 0; ( $bytes / 1024) &gt; 0.9; $i++, $bytes /= 1024 ) {} // @codingStandardsIgnoreLine

        return sprintf( &quot;%1.{$decimals}f %s&quot;, round( $bytes, $decimals ), $units[ $i ] );
    }
}
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