File functions/countries.php

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<?php

/**
 * Functies m.b.t. landen
 * 
 * @copyright SIW Internationale Vrijwilligersprojecten
 */

use SIW\Data\Country;

/**
 * Geeft array van landen terug op basis van zoekterm (slug of ISO-code)
 * 
 * @since     3.0.0
 *
 * @param string $index
 * @param string $context all|workcamps|esc_projects|tailor_made_projects
 * @param string $return objects|array
 * 
 * @return Country[]|array
 * 
 * @todo continent als context toevoegen
 */
function siw_get_countries( string $context = 'all', string $index = 'slug', string $return = 'objects' ) { 

    $countries = wp_cache_get( "{$context}_{$index}_{$return}", 'siw_countries' );
    if ( false !== $countries ) {
        return $countries;
    }

    $continents = siw_get_data_file_ids( 'countries' );

    foreach ( $continents as $continent ) {
        $continent = str_replace( '_', '-', $continent );
        $continent_data[ $continent ] = siw_get_data( "countries/{$continent}" );
    }
    
    // Continent toevoegen aan elke land en array platslaan TODO: netter
    $data = [];
    foreach ( $continent_data as $continent => $countries_data ) {
        $countries_data = array_map( function( $country_data ) use ( $continent ) {
            $country_data['continent'] = $continent;
            return $country_data;
        }, $countries_data );
        $data = array_merge( $data, $countries_data );
    }

    //Sorteren op naam
    $data = wp_list_sort( $data, 'name' );

    //Zet index van array
    $data = array_column( $data , null, $index );

    //Creëer objecten
    $countries = array_map(
        function( $item ) {
            return new Country( $item );
        },
        $data
    );

    //Filter op context
    $countries = array_filter(
        $countries, 
        function( $country ) use ( $context ) {
            return ( 'all' == $context 
                || ( 'workcamps' == $context && $country->has_workcamps() )
                || ( 'esc_projects' == $context && $country->has_esc_projects() )
                || ( 'tailor_made_projects' == $context && $country->has_tailor_made_projects() )
            );
        }
    );

    if ( 'array' == $return ) {
        $countries = array_map(
            function( $country ) {
                return $country->get_name();
            },
            $countries
        );
    }
    wp_cache_set( "{$context}_{$index}_{$return}", $countries, 'siw_countries' );

    return $countries;
}

/**
 * Geeft land terug op basis van zoekterm (slug of ISO-code)
 * 
 * @since     3.0.0
 *
 * @param string $country
 * @param string $index
 * @return Country
 */
function siw_get_country( string $country, string $index = 'slug' ) {
    $countries = siw_get_countries( 'all', $index );
    return $countries[ $country ] ?? false;
}

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