<?php
/**
 * This source file is part of the open source project
 * ExpressionEngine (https://expressionengine.com)
 *
 * @link      https://expressionengine.com/
 * @copyright Copyright (c) 2003-2022, Packet Tide, LLC (https://www.packettide.com)
 * @license   https://expressionengine.com/license Licensed under Apache License, Version 2.0
 */

namespace ExpressionEngine\Service\Formatter\Formats;

use ExpressionEngine\Service\Formatter\Formatter;
use NumberFormatter;

/**
 * Formatter\Number
 */
class Number extends Formatter
{
    /**
     * Format the memory to a sane byte format
     *
     * @param  bool $abbr Use the abbreviated form of the byte format
     * @param  bool $include_markup Output with <abbr> HTML. Only affects abbreviated forms.
     * @return self This returns a reference to itself
     **/
    public function bytes($abbr = true, $include_markup = true)
    {
        $memory = $this->content;
        $precision = 0;

        if ($abbr && $include_markup) {
            $lang_suffix = '_abbr_html';
        } elseif ($abbr) {
            $lang_suffix = '_abbr';
        } else {
            $lang_suffix = '';
        }

        if ($memory >= 1000000000) {
            $precision = 2;
            $memory = round($memory / 1073741824, $precision);
            $unit = lang('formatter_gigabytes' . $lang_suffix);
        } elseif ($memory >= 1000000) {
            $precision = 1;
            $memory = round($memory / 1048576, $precision);
            $unit = lang('formatter_megabytes' . $lang_suffix);
        } elseif ($memory >= 1000) {
            $memory = round($memory / 1024);
            $unit = lang('formatter_kilobytes' . $lang_suffix);
        } else {
            $unit = lang('formatter_bytes' . $lang_suffix);
        }

        $unit = ($abbr) ? $unit : ' ' . $unit;
        $this->content = number_format($memory, $precision) . $unit;

        return $this;
    }

    /**
     * Currency Formatter
     *
     * Greatest accuracy requires the PHP intl extension to be available
     *
     * @param  array  $options (string) currency, (string) locale
     * @return self This returns a reference to itself
     */
    public function currency($options = [])
    {
        $options = [
            'currency' => (isset($options['currency'])) ? $options['currency'] : 'USD',
            'locale' => (isset($options['locale'])) ? $options['locale'] : 'en_US.UTF-8',
            'decimals' => (isset($options['decimals'])) ? (int) $options['decimals'] : null,
        ];

        // best option, will display the currency correctly based on the locale
        // e.g. $112,358.13 and €112,358.13 in the US; 112.358,13 $ and 112.358,13 € in Germany
        if ($this->intl_loaded) {
            $fmt = new \NumberFormatter($options['locale'], \NumberFormatter::CURRENCY);

            if (is_int($options['decimals'])) {
                $fmt->setAttribute($fmt::FRACTION_DIGITS, $options['decimals']);
            }

            $this->content = $fmt->formatCurrency((float) $this->content, $options['currency']);

            return $this;
        }

        // This PHP function is a wrapper for strfmon, so isn't available on all systems, e.g. Windows
        // Won't get the position of the currency marker correct for non-US locales.
        // This is intentionally a 20% effort, 80% solution situation rather than maintaining our own
        // localization formatting lookup tables. The 100% solution is easily achieved by ensuring
        // that the intl extension is loaded in PHP, handled above.
        // NOTE: `money_format` is deprecated in PHP7.4
        if (function_exists('money_format')) {
            // grab the current monetary locale to reset after formatting
            $sys_locale = setlocale(LC_MONETARY, 0);

            // set the monetary locale to the specified option
            setlocale(LC_MONETARY, $options['locale']);

            $right_precision = (is_int($options['decimals'])) ? $options['decimals'] : 2;
            //@-suppressing because we don't want deprecation error - see above on 20/80 effort
            $this->content = @money_format("%.{$right_precision}n", (float) $this->content);

            // set the monetary locale back to normal
            setlocale(LC_MONETARY, $sys_locale);

            return $this;
        }

        throw new \Exception('<code>{...:currency}</code> modifier error: Environment does not support any known currency formatters, please install the PHP <b>intl</b> extension.');
    }

    /**
     * Duration Formatter
     *
     * @param  array  $options (string) locale
     * @return self This returns a reference to itself
     */
    public function duration($options = [])
    {
        $this->content = round($this->content);

        $options = [
            'locale' => (isset($options['locale'])) ? $options['locale'] : 'en_US.UTF-8',
        ];

        if ($this->intl_loaded) {
            $fmt = new \NumberFormatter($options['locale'], \NumberFormatter::DURATION);
            $this->content = $fmt->format($this->content);

            return $this;
        }

        // the following is a fallback that follows the NumberFormatter::DURATION
        // output pattern if the intl extension isn't available

        if ($this->content < 60) {
            $this->content = sprintf(lang('formatter_duration_seconds_only'), $this->content);

            return $this;
        }

        $seconds = $this->content % 60;

        // NumberFormatter::DURATION zero pads everything but the left-most digit
        if ($seconds < 10) {
            $seconds = '0' . $seconds;
        }

        $remainder = ($this->content - $seconds) / 60;
        $minutes = $remainder % 60;

        $remainder = $remainder - $minutes;

        if ($remainder <= 0) {
            $this->content = $minutes . ':' . $seconds;

            return $this->content;
        }

        if ($minutes < 10) {
            $minutes = '0' . $minutes;
        }

        $remainder = $remainder / 60;
        $hours = number_format($remainder);

        $this->content = $hours . ':' . $minutes . ':' . $seconds;

        return $this;
    }

    /**
     * Number Format Formatter
     *
     * Formats a number with typical options
     *
     * @param  array  $options (int) decimals, (string) decimal_point, (string) thousands_separator
     * @return self This returns a reference to itself
     */
    public function number_format($options = [])
    {
        $options = [
            'decimals' => (isset($options['decimals'])) ? (int) $options['decimals'] : 0,
            'decimal_point' => (isset($options['decimal_point'])) ? $options['decimal_point'] : '.',
            'thousands_separator' => (isset($options['thousands_separator'])) ? $options['thousands_separator'] : ',',
        ];

        $this->content = number_format(
            (float) $this->content,
            $options['decimals'],
            $options['decimal_point'],
            $options['thousands_separator']
        );

        return $this;
    }

    /**
     * Ordinal Formatter
     *
     * Locales other than English require the intl extension
     *
     * @param  array  $options (string) locale
     * @return self This returns a reference to itself
     */
    public function ordinal($options = [])
    {
        $options = [
            'locale' => (isset($options['locale'])) ? $options['locale'] : 'en_US.UTF-8',
        ];

        if ($this->intl_loaded) {
            $fmt = new \NumberFormatter($options['locale'], \NumberFormatter::ORDINAL);
            $this->content = $fmt->format($this->content);

            return $this;
        }

        // fallback will only work for English ordinal indicators
        $indicators = ['th','st','nd','rd','th','th','th','th','th','th'];

        $mod = (int) $this->content % 100;
        if (($mod >= 11) && ($mod <= 13)) {
            $indicator = $indicators[0];
        } else {
            $indicator = $indicators[(int) $this->content % 10];
        }

        $this->content = number_format((float) $this->content) . $indicator;

        return $this;
    }

    /**
     * Spell Out Formatter
     *
     * Requires the PHP intl extension to be available
     *
     * @param  array  $options (string) capitalize, (string) locale
     * @return self This returns a reference to itself
     */
    public function spellout($options = [])
    {
        if (! $this->intl_loaded) {
            throw new \Exception('<code>{...:spellout}</code> modifier error: This modifier requires the PHP <b>intl</b> extension to be installed.');
        }

        $options = [
            'capitalize' => (isset($options['capitalize'])) ? $options['capitalize'] : false,
            'locale' => (isset($options['locale'])) ? $options['locale'] : 'en_US.UTF-8',
        ];

        $fmt = new \NumberFormatter($options['locale'], \NumberFormatter::SPELLOUT);
        $this->content = $fmt->format($this->content);

        switch ($options['capitalize']) {
            case 'ucfirst':
                $this->content = ucfirst($this->content);

                break;
            case 'ucwords':
                $this->content = ucwords($this->content);

                break;
            default:
                // nada
        }

        return $this;
    }
}

// EOF
