<?php
/**
 * Class file for helpers
 * 
 * @package Accessibility_Checker
 */

namespace EDAC;

/**
 * Class that holds helpers
 */
class Helpers {

	/**
	 * Gets a sql prepared/safe list of items from an array.
	 * Needed b/c wpdb->prepare breaks quotes for IN.
	 *
	 * @param array $items Array of items to be made into a sql safe comma delimted list.
	 * @return string
	 */
	public static function array_to_sql_safe_list( $items ) {

		$items = array_map(
			function ( $item ) {
				global $wpdb;

				return $wpdb->prepare( '%s', $item );
			},
			$items
		);

		return implode( ',', $items );
	}


	/**
	 * Localizes the format of a number.
	 *
	 * @param [type]  $number
	 * @param integer $precision number of decimals.
	 * @return integer
	 */
	public static function format_number( $number, $precision = 0 ) {

		if ( ( ! is_numeric( $number ) ) ) {
			return $number;
		}
		
		$locale = get_locale();

		if ( class_exists( 'NumberFormatter' ) ) {
			$formatter = new \NumberFormatter( $locale, \NumberFormatter::DECIMAL );
			$formatter->setAttribute( \NumberFormatter::MAX_FRACTION_DIGITS, $precision ); // decimals to include.
			$formatter->setAttribute( \NumberFormatter::GROUPING_USED, 1 ); // Include thousands separator.
		
			return $formatter->format( $number );

		} else {
			return number_format( $number );
		}
	}

	/**
	 * Localizes the format of a percentage.
	 *
	 * @param [type]  $number
	 * @param integer $precision number of decimals.
	 * @return integer
	 */
	public static function format_percentage( $number, $precision = 2 ) {

		if ( ( ! is_numeric( $number ) ) ) {
			return $number;
		}

		if ( $number > 1 ) {
			$number = $number / 100;
		}

		
		$locale = get_locale();

		if ( class_exists( 'NumberFormatter' ) ) {
	
			$formatter = new \NumberFormatter( $locale, \NumberFormatter::PERCENT );
			$formatter->setAttribute( \NumberFormatter::MAX_FRACTION_DIGITS, $precision ); // decimals to include.
			
			return $formatter->format( $number );
		
		} else {
			return sprintf( '%.2f%%', $number * 100 );
		}
	}

	/**
	 * Localizes the format of a date.
	 *
	 * @param [type]  $number
	 * @param integer $precision number of decimals.
	 * @return integer
	 */
	public static function format_date( $date ) {

		if ( ! is_numeric( $date ) ) { // date as string.
			
			$timestamp = strtotime( $date ); 

			if ( ! $timestamp ) { // The passed string is not a valid date.
				return $date;
			}       
		} else { // unix timestamp.
			$timestamp = $date; 
		}

		$datetime = new \DateTime();
		$datetime->setTimestamp( $timestamp );
		$datetime->setTimezone( wp_timezone() );
	

		$format = get_option( 'date_format' );

		if ( ! $format ) {
			$format = 'j M Y';
		}

		$formatted_date = $datetime->format( $format );

		return $formatted_date;
	}

	/**
	 * Given an WP option that may contain a string or an array, returns it as an array.
	 *
	 * @param string $option_name name of the option to return.
	 * @return array
	 */
	public static function get_option_as_array( $option_name ) {

		$option = get_option( $option_name );

		if ( is_array( $option ) && ! empty( $option ) ) {
			return $option;
		} else {
			return array();
		}

		if ( is_string( $option ) ) {
			return array( $option );
		}

		return array();
	}
}