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<?php

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/**

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* Integration for GoogleFonts

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* @package PUM

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class PUM_Integration_GoogleFonts {

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/**

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* @var string

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private static $default_api_key = 'AIzaSyA1Q0uFOhEh3zv_Pk31FqlACArFquyBeQU';

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/**

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* @var string

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public static $api_key;

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/**

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public static function init() {

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// Set the API key based on options first then default second.

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self::$api_key = pum_get_option( 'google_fonts_api_key', self::$default_api_key );

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add_filter( 'pum_theme_font_family_options', [ __CLASS__, 'font_family_options' ], 20 );

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}

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/**

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* Loads a static backup list of Google Fonts in case the API is not responding.

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* @return array|mixed|object

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public static function load_backup_fonts() {

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$json_data = file_get_contents( Popup_Maker::$DIR . 'includes/google-fonts.json' );

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return json_decode( $json_data, true );

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}

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/**

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* Fetch list of Google Fonts or fallback to local list.

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* @param string $sort

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* @return array|mixed

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public static function fetch_fonts( $sort = 'alpha' ) {

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if ( false !== $font_list = get_site_transient( 'pum_google_fonts_list' ) ) {

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return $font_list;

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}

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$google_api_url = 'https://www.googleapis.com/webfonts/v1/webfonts?key=' . self::$api_key . '&sort=' . $sort;

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$response = wp_remote_retrieve_body( wp_remote_get( $google_api_url, [ 'sslverify' => false ] ) );

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if ( ! is_wp_error( $response ) ) {

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$data = json_decode( $response, true );

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}

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// Store transient for a long time after fetching from Google to save API key hits.

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$transient_time = self::$api_key === self::$default_api_key ? 8 * WEEK_IN_SECONDS : 1 * WEEK_IN_SECONDS;

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if ( ! empty( $data['errors'] ) || empty( $data['items'] ) ) {

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$data = self::load_backup_fonts();

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// Store transient for short period.

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$transient_time = 1 * DAY_IN_SECONDS;

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}

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$items = $data['items'];

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$font_list = [];

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if ( count( $items ) ) {

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foreach ( $items as $item ) {

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$font_list[ $item['family'] ] = $item;

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}

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}

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set_site_transient( 'pum_google_fonts_list', $font_list, $transient_time );

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return $font_list;

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}

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/**

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* Adds options to the font family dropdowns.

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* @param $options

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* @return array

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public static function font_family_options( $options ) {

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$font_list = self::fetch_fonts();

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if ( empty( $font_list ) ) {

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return $options;

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}

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$new_options = [];

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// $options = array_merge( $options, array(

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// '' => __( 'Google Web Fonts', 'popup-maker' ) . ' ⤵',

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// ) );

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foreach ( $font_list as $font_family => $font ) {

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$new_options[ $font_family ] = $font_family;

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}

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$options[ __( 'Google Web Fonts', 'popup-maker' ) ] = $new_options;

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return $options;

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}

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}

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