Corona Virus Stats Shortcode

<?php

[add_shortcode](http://codex.wordpress.org/Function_Reference/add_shortcode)('coronavirus', 'get_corona_stats');

function get_corona_stats($atts, $content) {

        $transient_name = 'corona_stats_';

        $corona_stats = [];

        if ( $maybe_transient_data = [get_transient](http://codex.wordpress.org/Function_Reference/get_transient)( $transient_name ) ) {
                $corona_stats = $maybe_transient_data;
        } else {
                $source = [wp_remote_get](http://codex.wordpress.org/Function_Reference/wp_remote_get)('https://corona.lmao.ninja/all');

                $remote_response = true;

                if ( [is_wp_error](http://codex.wordpress.org/Function_Reference/is_wp_error)( $source ) ) {
                        $remote_response = null;
                }

                if ( 200 !== wp_remote_retrieve_response_code( $source ) ) {
                        $remote_response = null;
                }

                if ( ! $remote_response ) {
                        return [];
                }

                if ( ! isset( $source['body'] ) ) {
                        return [];
                }

                $json_data = json_decode( $source['body'], true );

                if ( ! $json_data ) {
                        return [];
                }

                $corona_stats[] = [
                        'cases' => $json_data['cases'],
                        'deaths' => $json_data['deaths'],
                        'recovered' => $json_data['recovered'],
                ];
        }

        [set_transient](http://codex.wordpress.org/Function_Reference/set_transient)(
                $transient_name,
                $corona_stats,
                1 * HOURS_IN_SECONDS
        );

        $content = sprintf('<h3>Corona Virus Stats</h3>
                        <p>Cases: %s</p>
                        <p>Deaths: %s</p>
                        <p>Recovered: %s</p>', 
                        number_format($corona_stats[0]['cases']), 
                        number_format($corona_stats[0]['deaths']), 
                        number_format($corona_stats[0]['recovered'])
        );

        return $content;
}