path: root/danixland-covid-italy.php

<?php

defined( 'ABSPATH' ) or die( 'No script kiddies please!' );

/**
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 *
 * @wordpress-plugin
 * Plugin Name:       danixland-covid-italy
 * Plugin URI:        https://danix.xyz
 * Description:       Show the latest covid19 stats for italy in a widget
 * Version:           1.0
 * Author:            Danilo 'danix' M.
 * Author URI:        https://danix.xyz
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 * Text Domain:       dnxcovita
 * Domain Path:       /languages
 */

/**
 * Add plugin i18n domain: dnxcovita
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
// Pre 2.6 compatibility
if ( ! defined( 'WP_CONTENT_URL' ) ) {
    if ( defined( 'WP_SITEURL' ) ) define( 'WP_CONTENT_URL', WP_SITEURL . '/wp-content' );
    else define( 'WP_CONTENT_URL', get_option( 'url' ) . '/wp-content' );
}
if ( ! defined( 'WP_PLUGIN_URL' ) ) define( 'WP_PLUGIN_URL', WP_CONTENT_URL. '/plugins' );

load_plugin_textdomain('dnxcovita', WP_PLUGIN_URL . '/danixland-covid-italy/languages/', 'danixland-covid-italy/languages/');

/**
 * The heart of the plugin, this function retrieves the data from github and
 * stores it in a transient for up to 24h.
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
function dnxcovita_retrieve_data() {
	// full history since 24/02/2020
    $all_data_link = 'https://raw.githubusercontent.com/pcm-dpc/COVID-19/master/dati-json/dpc-covid19-ita-andamento-nazionale.json';
    if ( false === ($dnxcovita_data = get_transient('dnxcovita_data') ) ) {
		$json_data = file_get_contents($all_data_link);
		$raw_data = json_decode($json_data, true);
		$processed = [];
		foreach ($raw_data as $item => $daily_data) {
			# $item is the entry number and $daily_data is the array that we want to filter
			$processed[$item] = dnxcovita_walker($daily_data);
		}

		set_transient('dnxcovita_data', $processed, DAY_IN_SECONDS);
    }
}

/**
 * Remove all unwanted fields from the data stored in the transient
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
function dnxcovita_walker($value) {
	// array that filters all keys we are not interested in
	$not_interested = array(
		'stato',
		'casi_da_sospetto_diagnostico',
		'casi_da_screening',
		'casi_testati',
		'note'
	);
	$result = array_diff_key($value, array_flip($not_interested));
	return $result;
}

/**
 * Return all data
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
function dnxcovita_get_all_data() {
	$data = ( false === get_transient('dnxcovita_data') ) ? dnxcovita_retrieve_data() : get_transient('dnxcovita_data');

	return $data;
}

/**
 * Return the latest data
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
function dnxcovita_get_latest_data() {
	$data = ( false === get_transient('dnxcovita_data') ) ? dnxcovita_retrieve_data() : get_transient('dnxcovita_data');
	$rev = array_reverse($data);
	$output = $rev[0];

	return $output;
}

/**
 * Return the data from yesterday
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
function dnxcovita_get_previous_data() {
	$data = ( false === get_transient('dnxcovita_data') ) ? dnxcovita_retrieve_data() : get_transient('dnxcovita_data');
	$last = array_slice($data, -2, 1, false);

	return $last;
}

/**
 * Add function to widgets_init that'll load our widget.
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
add_action( 'widgets_init', 'dnxcovita_register' );

/**
 * Register our widget.
 * 'dnxcovita_Widget' is the widget class used below.
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
function dnxcovita_register() {
    register_widget( 'dnxcovita_Widget' );
}

/**
 * User_Panel class.
 * This class handles everything that needs to be handled with the widget:
 * the settings, form, display, and update.  Nice!
 *
 * @link              https://danix.xyz
 * @since             0.0.1
 * @package           Dnxcovita
 */
class dnxcovita_Widget extends WP_Widget {

    /**
     * Widget setup.
     */
    public function __construct() {
        $control_ops = array('width' => 400, 'height' => 350);
        parent::__construct(
            'dnx-covid-italy', // id_base
            __('Italian Covid19 Situation', 'dnxcovita' ), // Name
            array( 'description' => __('Display the current Covid19 situation in Italy.', 'dnxcovita') ),
            $control_ops
        );
    }

    /**
     * How to display the widget on the public side of the site.
     */
    public function widget( $args, $instance ) {
        extract( $args );

        $title = apply_filters( 'widget_title', empty( $instance['title'] ) ? '' : $instance['title'], $instance, $this->id_base );

        echo $args['before_widget'];
        if ( ! empty( $title ) ) {
            echo $args['before_title'] . $title . $args['after_title'];
        } ?>
<div class="dnxcovita_content">
	<?php
	$latest_data = dnxcovita_get_latest_data();
	$yesterday_data = dnxcovita_get_previous_data(); ?>

	<p class="dnxcovita_desc"><?php
		$pull_desc = __('data pulled daily from the <a href="%1$s" title="%2$s">official github repository from the Ministry of Health.</a>', 'dnxcovita');
		$moh_site = 'https://github.com/pcm-dpc/COVID-19';
		$moh_site_title = 'official github repository from the Ministry of Health report on COVID19 in Italy.';
		echo sprintf( $pull_desc,
			esc_html($moh_site),
			esc_html($moh_site_title)
		);
	?></p>
	<p class="dnxcovita_latest_push"><?php
		$expl = __('latest data published on ', 'dnxcovita');
		$timestring = '<span>%1$s</span><time class="dnxcovita_latest_check" datetime="%2$s">%3$s at %4$s</time>';
		$w3c_data = $latest_data['data'];
		$ut = strtotime($w3c_data);
		$ld = date('d/m/Y', $ut);
		$lh = date('H:i', $ut);
		$latest_check = sprintf( $timestring,
			esc_html($expl),
			esc_attr($w3c_data),
			esc_html($ld),
			esc_html($lh)
		);
		echo $latest_check;
	?></p>

	<dl>

	<?php foreach ($latest_data as $key => $value) {
		// we generate the fields first and then populate the output
		if ( 'data' === $key ) {
			$latest_date = date('d/m/Y', strtotime($value));
			$previous_date = date('d/m/Y', strtotime($yesterday_data[0][$key]));
		}
		// this check is redundant because $value is obtained straight from the json
		// but still, better check than being sorry
		if ( is_numeric($value) ) {
			$latest_content = number_format($value, 0, ',', '&dot;');
			$diff = $value - $yesterday_data[0][$key];
			$diff_plusminus = (is_numeric($diff) && round($diff) > 1) ? '<span class="wp-exclude-emoji dnxcovita_goingup">&nearr;</span> &plus;' : '<span class="wp-exclude-emoji dnxcovita_goingdown">&searr;</span> &minus;';
			$diff_content = $diff_plusminus . number_format($diff, 0, ',', '&dot;');
		}
		// Now we have all the values formatted so we can output the definition list
		if ('data' !== $key) {
			echo '<dt>' . str_replace('_', ' ', $key) . '</dt>';
			echo '<dd><span class="dnxcovita_latest_data">' . $latest_content . '</span> <span class="dnxcovita_previous_data">' . $diff_content . '</span></dd>';
		}
	} ?>
	</dl>
</div> <!-- .dnxcovita_content -->
        <?php
        echo $args['after_widget'];
    }

    /**
     * Handles updating settings for the current widget instance.
     */
    public function update( $new_instance, $old_instance ) {
        $instance = $old_instance;
        $instance['title'] = sanitize_text_field( $new_instance['title'] );

        return $instance;
    }

    /**
     * Outputs the widget settings form.
     */
    public function form( $instance ) {
        $instance = wp_parse_args( (array) $instance, array( 'title' => '' ) );
        $title = sanitize_text_field( $instance['title'] );
        ?>
        <p>
            <label for="<?php echo $this->get_field_id('title'); ?>">
            	<?php _e('Title:', 'dnxcovita'); ?>
        	</label>
        	<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" />
        </p>
        <?php
    }
}