From bd980ff615344f989e97d7dc8d3ea8e87d2600fb Mon Sep 17 00:00:00 2001
From: Farid Adam <faridibin@gmail.com>
Date: Sun, 5 Jan 2025 20:18:02 -0500
Subject: [PATCH] Add Carbon dependency and implement calculateNextDate method
 in Interval enum

---
 composer.json          |  1 +
 src/Enums/Interval.php | 21 +++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/composer.json b/composer.json
index c716a5d..eb8023a 100644
--- a/composer.json
+++ b/composer.json
@@ -23,6 +23,7 @@
 	"require": {
 		"php": "^8.0",
 		"guzzlehttp/guzzle": "^7.0",
+		"nesbot/carbon": "^3.8.4",
 		"ext-json": "*"
 	},
 	"require-dev": {
diff --git a/src/Enums/Interval.php b/src/Enums/Interval.php
index 2ff8afb..4ec24fc 100644
--- a/src/Enums/Interval.php
+++ b/src/Enums/Interval.php
@@ -2,6 +2,8 @@
 
 namespace Faridibin\Paystack\Enums;
 
+use Carbon\Carbon;
+
 enum Interval: string
 {
     case HOURLY = 'hourly';
@@ -11,4 +13,23 @@ enum Interval: string
     case QUARTERLY = 'quarterly';
     case BI_ANNUALLY = 'biannually';
     case ANNUALLY = 'annually';
+
+    /**
+     * Calculate the next date based on the interval
+     *
+     * @param Carbon $date
+     * @return Carbon
+     */
+    public function calculateNextDate(Carbon $date): Carbon
+    {
+        return match ($this) {
+            self::HOURLY => $date->copy()->addHour(),
+            self::DAILY => $date->copy()->addDay(),
+            self::WEEKLY => $date->copy()->addWeek(),
+            self::MONTHLY => $date->copy()->addMonth(),
+            self::QUARTERLY => $date->copy()->addMonths(3),
+            self::BI_ANNUALLY => $date->copy()->addMonths(6),
+            self::ANNUALLY => $date->copy()->addYear(),
+        };
+    }
 }