From 98c117f8710beca4003e5a1ba2ea6d8b926cb034 Mon Sep 17 00:00:00 2001
From: Deeka Wong <huangdijia@gmail.com>
Date: Sun, 19 Nov 2023 20:41:46 +0800
Subject: [PATCH] Adds Number utility class (#440)

Co-authored-by: Deeka Wong <8337659+huangdijia@users.noreply.github.com>
---
 src/Number.php | 197 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 197 insertions(+)
 create mode 100644 src/Number.php

diff --git a/src/Number.php b/src/Number.php
new file mode 100644
index 0000000..ecbb187
--- /dev/null
+++ b/src/Number.php
@@ -0,0 +1,197 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * This file is part of friendsofhyperf/components.
+ *
+ * @link     https://github.com/friendsofhyperf/components
+ * @document https://github.com/friendsofhyperf/components/blob/main/README.md
+ * @contact  huangdijia@gmail.com
+ */
+
+namespace FriendsOfHyperf\Support;
+
+use Hyperf\Macroable\Macroable;
+use NumberFormatter;
+use RuntimeException;
+
+use function Hyperf\Tappable\tap;
+
+class Number
+{
+    use Macroable;
+
+    /**
+     * The current default locale.
+     *
+     * @var string
+     */
+    protected static $locale = 'en';
+
+    /**
+     * Format the given number according to the current locale.
+     *
+     * @param ?string $locale
+     * @return string|false
+     */
+    public static function format(int|float $number, ?int $precision = null, ?int $maxPrecision = null, ?string $locale = null)
+    {
+        static::ensureIntlExtensionIsInstalled();
+
+        $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::DECIMAL);
+
+        if (! is_null($maxPrecision)) {
+            $formatter->setAttribute(NumberFormatter::MAX_FRACTION_DIGITS, $maxPrecision);
+        } elseif (! is_null($precision)) {
+            $formatter->setAttribute(NumberFormatter::FRACTION_DIGITS, $precision);
+        }
+
+        return $formatter->format($number);
+    }
+
+    /**
+     * Spell out the given number in the given locale.
+     *
+     * @param ?string $locale
+     * @return string
+     */
+    public static function spell(int|float $number, ?string $locale = null)
+    {
+        static::ensureIntlExtensionIsInstalled();
+
+        $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::SPELLOUT);
+
+        return $formatter->format($number);
+    }
+
+    /**
+     * Convert the given number to ordinal form.
+     *
+     * @param ?string $locale
+     * @return string
+     */
+    public static function ordinal(int|float $number, ?string $locale = null)
+    {
+        static::ensureIntlExtensionIsInstalled();
+
+        $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::ORDINAL);
+
+        return $formatter->format($number);
+    }
+
+    /**
+     * Convert the given number to its percentage equivalent.
+     *
+     * @param ?string $locale
+     * @return string|false
+     */
+    public static function percentage(int|float $number, int $precision = 0, ?int $maxPrecision = null, ?string $locale = null)
+    {
+        static::ensureIntlExtensionIsInstalled();
+
+        $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::PERCENT);
+
+        if (! is_null($maxPrecision)) {
+            $formatter->setAttribute(NumberFormatter::MAX_FRACTION_DIGITS, $maxPrecision);
+        } else {
+            $formatter->setAttribute(NumberFormatter::FRACTION_DIGITS, $precision);
+        }
+
+        return $formatter->format($number / 100);
+    }
+
+    /**
+     * Convert the given number to its currency equivalent.
+     *
+     * @param ?string $locale
+     * @return string|false
+     */
+    public static function currency(int|float $number, string $in = 'USD', ?string $locale = null)
+    {
+        static::ensureIntlExtensionIsInstalled();
+
+        $formatter = new NumberFormatter($locale ?? static::$locale, NumberFormatter::CURRENCY);
+
+        return $formatter->formatCurrency($number, $in);
+    }
+
+    /**
+     * Convert the given number to its file size equivalent.
+     *
+     * @return string
+     */
+    public static function fileSize(int|float $bytes, int $precision = 0, ?int $maxPrecision = null)
+    {
+        $units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
+
+        for ($i = 0; ($bytes / 1024) > 0.9 && ($i < count($units) - 1); ++$i) {
+            $bytes /= 1024;
+        }
+
+        return sprintf('%s %s', static::format($bytes, $precision, $maxPrecision), $units[$i]);
+    }
+
+    /**
+     * Convert the number to its human readable equivalent.
+     *
+     * @param int $number
+     * @return string
+     */
+    public static function forHumans(int|float $number, int $precision = 0, ?int $maxPrecision = null)
+    {
+        $units = [
+            3 => 'thousand',
+            6 => 'million',
+            9 => 'billion',
+            12 => 'trillion',
+            15 => 'quadrillion',
+        ];
+
+        switch (true) {
+            case $number === 0:
+                return '0';
+            case $number < 0:
+                return sprintf('-%s', static::forHumans(abs($number), $precision, $maxPrecision));
+            case $number >= 1e15:
+                return sprintf('%s quadrillion', static::forHumans($number / 1e15, $precision, $maxPrecision));
+        }
+
+        $numberExponent = floor(log10($number));
+        $displayExponent = $numberExponent - ($numberExponent % 3);
+        $number /= pow(10, $displayExponent);
+
+        return trim(sprintf('%s %s', static::format($number, $precision, $maxPrecision), $units[$displayExponent] ?? ''));
+    }
+
+    /**
+     * Execute the given callback using the given locale.
+     *
+     * @return mixed
+     */
+    public static function withLocale(string $locale, callable $callback)
+    {
+        $previousLocale = static::$locale;
+
+        static::useLocale($locale);
+
+        return tap($callback(), fn () => static::useLocale($previousLocale));
+    }
+
+    /**
+     * Set the default locale.
+     */
+    public static function useLocale(string $locale)
+    {
+        static::$locale = $locale;
+    }
+
+    /**
+     * Ensure the "intl" PHP extension is installed.
+     */
+    protected static function ensureIntlExtensionIsInstalled()
+    {
+        if (! extension_loaded('intl')) {
+            throw new RuntimeException('The "intl" PHP extension is required to use this method.');
+        }
+    }
+}