From 9d2fdc205d1a6d2326532cc7c10953e6dc5e2c9a Mon Sep 17 00:00:00 2001
From: Maxim Babichev <maksim.babichev95@gmail.com>
Date: Fri, 5 Jan 2024 10:25:41 +0300
Subject: [PATCH] add FormatterServiceInterface

---
 src/Services/FormatterService.php          | 24 ++++++++++
 src/Services/FormatterServiceInterface.php | 15 ++++++
 tests/Units/Service/FormatterTest.php      | 55 ++++++++++++++++++++++
 3 files changed, 94 insertions(+)
 create mode 100644 src/Services/FormatterService.php
 create mode 100644 src/Services/FormatterServiceInterface.php
 create mode 100644 tests/Units/Service/FormatterTest.php

diff --git a/src/Services/FormatterService.php b/src/Services/FormatterService.php
new file mode 100644
index 000000000..b078cfd14
--- /dev/null
+++ b/src/Services/FormatterService.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Bavix\Wallet\Services;
+
+use Brick\Math\BigDecimal;
+use Brick\Math\RoundingMode;
+
+final readonly class FormatterService implements FormatterServiceInterface
+{
+    public function intValue(string|int|float $amount, int $decimalPlaces): string
+    {
+        return (string) BigDecimal::ten()
+            ->power($decimalPlaces)
+            ->multipliedBy(BigDecimal::of($amount))
+            ->toScale(0, RoundingMode::DOWN);
+    }
+
+    public function floatValue(string|int|float $amount, int $decimalPlaces): string
+    {
+        return (string) BigDecimal::ofUnscaledValue($amount, $decimalPlaces);
+    }
+}
diff --git a/src/Services/FormatterServiceInterface.php b/src/Services/FormatterServiceInterface.php
new file mode 100644
index 000000000..e2d8eee2f
--- /dev/null
+++ b/src/Services/FormatterServiceInterface.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Bavix\Wallet\Services;
+
+/**
+ * @internal
+ */
+interface FormatterServiceInterface
+{
+    public function intValue(string|int|float $amount, int $decimalPlaces): string;
+
+    public function floatValue(string|int|float $amount, int $decimalPlaces): string;
+}
diff --git a/tests/Units/Service/FormatterTest.php b/tests/Units/Service/FormatterTest.php
new file mode 100644
index 000000000..7cd8f13bd
--- /dev/null
+++ b/tests/Units/Service/FormatterTest.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Bavix\Wallet\Test\Units\Service;
+
+use Bavix\Wallet\Internal\Exceptions\ExceptionInterface;
+use Bavix\Wallet\Services\FormatterServiceInterface;
+use Bavix\Wallet\Test\Infra\TestCase;
+
+/**
+ * @internal
+ */
+final class FormatterTest extends TestCase
+{
+    /**
+     * @throws ExceptionInterface
+     */
+    public function testFloatValueDP3(): void
+    {
+        $result = app(FormatterServiceInterface::class)->floatValue('12345', 3);
+
+        self::assertSame('12.345', $result);
+    }
+
+    /**
+     * @throws ExceptionInterface
+     */
+    public function testFloatValueDP2(): void
+    {
+        $result = app(FormatterServiceInterface::class)->floatValue('12345', 2);
+
+        self::assertSame('123.45', $result);
+    }
+
+    /**
+     * @throws ExceptionInterface
+     */
+    public function testIntValueDP3(): void
+    {
+        $result = app(FormatterServiceInterface::class)->intValue('12.345', 3);
+
+        self::assertSame('12345', $result);
+    }
+
+    /**
+     * @throws ExceptionInterface
+     */
+    public function testIntValueDP2(): void
+    {
+        $result = app(FormatterServiceInterface::class)->intValue('123.45', 2);
+
+        self::assertSame('12345', $result);
+    }
+}