<?php

class BeautyMatters_Font_Utils {

    static $instance;
    public static $cfonts_list;
    private $google_font_queue = array();

    function __construct() {
        self::$cfonts_list = array(
            '',
            'Arial Black,Arial Black,Gadget,sans-serif',
            'Century Gothic',
            'Comic Sans MS,Comic Sans MS,cursive',
            'Courier New,Courier New,Courier,monospace',
            'Georgia,Georgia,serif',
            'Helvetica Neue, Helvetica, Arial, sans-serif',
            'Impact,Charcoal,sans-serif',
            'Lucida Console,Monaco,monospace',
            'Lucida Sans Unicode,Lucida Grande,sans-serif',
            'Palatino Linotype,Book Antiqua,Palatino,serif',
            'Tahoma,Geneva,sans-serif',
            'Times New Roman,Times,serif',
            'Trebuchet MS,Helvetica,sans-serif',
            'Verdana,Geneva,sans-serif',
        );
    }

    function add_google_font_queue($font) {
        $this->google_font_queue[] = $font;
    }

    function get_google_font_queue_parsed() {
        $font_string = "";
        $numItems = count($this->google_font_queue);
        $i = 0;
        foreach ($this->google_font_queue as $font) {
            $font_string .= str_replace(' ', '+', $font);
            if (++$i != $numItems) {
                $font_string .= "|";
            }
        }

        return $font_string;
    }

    function is_google_font($font) {
        return ($font == "") ? false : !(in_array($font, self::$cfonts_list));
    }

    function get_cfonts() {
        $cfonts = array();
        foreach (self::$cfonts_list as $font) {
            $cfonts[] = array(
                'name' => $font,
                'subsets' => array()
            );
        }
        return apply_filters('bmatters_font_customizer_cfonts', $cfonts);
    }

    function get_gfonts($what = null) {
        global $wp_filesystem;
        //checks if transient exists or has expired
        if (false == get_transient('bmatters_gfonts')) {

            $gfont_raw = $wp_filesystem->get_contents(get_template_directory() . "/assets/fonts/webfonts.json");
            error_log($gfont_raw);
            if ($gfont_raw === false) {
                $gfont_raw = wp_remote_fopen(dirname(dirname(__FILE__)) . "/../../assets/fonts/webfonts.json");
            }
            $gfonts_decoded = json_decode($gfont_raw, true);
            set_transient('bmatters_gfonts', $gfonts_decoded, 60 * 60 * 24 * 30);
        } else {
            $gfonts_decoded = get_transient('bmatters_gfonts');
        }

        $gfonts = array();
        $subsets = array();

        $subsets['all-subsets'] = sprintf('%1$s ( %2$s %3$s )', __('All subsets', 'beautymatters'), count($gfonts_decoded['items']) + count($this->get_cfonts()), __('fonts', 'beautymatters'));

        $gfonts[] = array();

        foreach ($gfonts_decoded['items'] as $font) {

            $gfonts_variants = array();
            foreach ($font['variants'] as $variant) {
                $name = str_replace(' ', '+', $font['family']);
                $gfonts_variants[] = array(
                    'name' => $name . ':' . $variant,
                    'subsets' => $font['subsets']
                );
            }
            //generates subset list : subset => font number
            foreach ($font['subsets'] as $sub) {
                $subsets[$sub] = isset($subsets[$sub]) ? $subsets[$sub] + 1 : 1;
            }
            $gfonts[] = array("name" => $font['family'], 'parsed' => $gfonts_variants);
        }

        //finalizes the subset array
        foreach ($subsets as $subset => $font_number) {
            if ('all-subsets' == $subset)
                continue;
            $subsets[$subset] = sprintf('%1$s ( %2$s %3$s )', $subset, $font_number, __('fonts', 'beautymatters')
            );
        }

        return ('subsets' == $what) ? apply_filters('bmatters_font_customizer_gfonts_subsets ', $subsets) : apply_filters('bmatters_font_customizer_gfonts', $gfonts);
    }

    function get_font_list() {
        return array_merge($this->get_cfonts(), $this->get_gfonts('font'));
    }

}