<?php
/**
 * Misc funcitons
 */

/**
 * Get min/max price for WooCommerce products
 *
 * @return array
 */
function jet_smart_filters_woo_prices( $args = array() ) {

	global $wpdb;

	if ( ! function_exists( 'wc' ) ) {
		return false;
	}

	$wc_query = wc()->query->get_main_query();

	if ( $wc_query ) {
		$args = wc()->query->get_main_query()->query_vars;
	} else {
		$args = array();
	}

	$tax_query  = isset( $args['tax_query'] ) ? $args['tax_query'] : array();
	$meta_query = isset( $args['meta_query'] ) ? $args['meta_query'] : array();

	if ( ! is_post_type_archive( 'product' ) && ! empty( $args['taxonomy'] ) && ! empty( $args['term'] ) ) {
		$tax_query[] = array(
			'taxonomy' => $args['taxonomy'],
			'terms'    => array( $args['term'] ),
			'field'    => 'slug',
		);
	}

	foreach ( $meta_query + $tax_query as $key => $query ) {
		if ( ! empty( $query['price_filter'] ) || ! empty( $query['rating_filter'] ) ) {
			unset( $meta_query[ $key ] );
		}
	}

	$meta_query = new WP_Meta_Query( $meta_query );
	$tax_query  = new WP_Tax_Query( $tax_query );

	$meta_query_sql = $meta_query->get_sql( 'post', $wpdb->posts, 'ID' );
	$tax_query_sql  = $tax_query->get_sql( $wpdb->posts, 'ID' );

	$sql  = "SELECT min( FLOOR( price_meta.meta_value ) ) as min, max( CEILING( price_meta.meta_value ) ) as max FROM {$wpdb->posts} ";
	$sql .= " LEFT JOIN {$wpdb->postmeta} as price_meta ON {$wpdb->posts}.ID = price_meta.post_id " . $tax_query_sql['join'] . $meta_query_sql['join'];
	$sql .= " 	WHERE {$wpdb->posts}.post_type IN ('" . implode( "','", array_map( 'esc_sql', apply_filters( 'woocommerce_price_filter_post_type', array( 'product' ) ) ) ) . "')
		AND {$wpdb->posts}.post_status = 'publish'
		AND price_meta.meta_key IN ('" . implode( "','", array_map( 'esc_sql', apply_filters( 'woocommerce_price_filter_meta_keys', array( '_price' ) ) ) ) . "')
		AND price_meta.meta_value > '' ";
	$sql .= $tax_query_sql['where'] . $meta_query_sql['where'];

	if ( $wc_query ) {
		$search = WC_Query::get_main_search_query_sql();
	} else {
		$search = false;
	}

	if ( $search ) {
		$sql .= ' AND ' . $search;
	}

	$price = $wpdb->get_row( $sql, ARRAY_A );

	if ( class_exists( 'woocommerce_wpml' ) ){
		$price['min'] = apply_filters( 'wcml_raw_price_amount', floatval( $price['min'] ) );
		$price['max'] = apply_filters( 'wcml_raw_price_amount', floatval( $price['max'] ) );
	}

	return $price; // WPCS: unprepared SQL ok.

}

/**
 * Callback to get min/max value for meta key
 */
function jet_smart_filters_meta_values( $args = array() ) {
	$key = ! empty( $args['key'] ) ? $args['key'] : false;

	if ( ! $key ) {
		return array();
	}

	global $wpdb;

	$data = $wpdb->get_results( 
		"SELECT min( FLOOR( meta_value ) ) as min, max( CEILING( meta_value ) ) as max FROM $wpdb->postmeta WHERE `meta_key` = '$key'",
		ARRAY_A
	);

	if ( ! empty( $data ) ) {
		return $data[0];
	} else {
		return array();
	}

}

/**
 * Returns current currency symbol
 *
 * @return string
 */
function jet_smart_filters_woo_currency_symbol() {

	$currency = apply_filters( 'jet-smart-filters/woocommerce/currency-symbol', get_woocommerce_currency_symbol() );

	return $currency;

}

/**
 * Do macros inside string
 *
 * @param  [type] $string      [description]
 * @param  [type] $field_value [description]
 *
 * @return [type]              [description]
 */
function jet_smart_filters_macros( $string, $field_value = null ) {

	$macros = apply_filters( 'jet-smart-filters/macros/macros-list', array(
		'woocommerce_currency_symbol' => 'jet_smart_filters_woo_currency_symbol',
	) );

	return preg_replace_callback(
		'/%([a-z_-]+)(\|[a-z0-9_-]+)?%/',
		function ( $matches ) use ( $macros, $field_value ) {

			$found = $matches[1];

			if ( ! isset( $macros[ $found ] ) ) {
				return $matches[0];
			}

			$cb = $macros[ $found ];

			if ( ! is_callable( $cb ) ) {
				return $matches[0];
			}

			$args = isset( $matches[2] ) ? ltrim( $matches[2], '|' ) : false;

			return call_user_func( $cb, $field_value, $args );

		}, $string
	);

}