From 90f6d26f6d8c3f650c8c70cbb789a3b50980b7c2 Mon Sep 17 00:00:00 2001
From: Carlosokumu <carlosokumu254@gmail.com>
Date: Mon, 26 Aug 2024 13:37:54 +0300
Subject: [PATCH] add function to calculate age

---
 internal/utils/age.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 internal/utils/age.go

diff --git a/internal/utils/age.go b/internal/utils/age.go
new file mode 100644
index 0000000..56c3e2b
--- /dev/null
+++ b/internal/utils/age.go
@@ -0,0 +1,21 @@
+package utils
+
+import "time"
+
+
+func CalculateAge(birthdate, today time.Time) int {
+	today = today.In(birthdate.Location())
+	ty, tm, td := today.Date()
+	today = time.Date(ty, tm, td, 0, 0, 0, 0, time.UTC)
+	by, bm, bd := birthdate.Date()
+	birthdate = time.Date(by, bm, bd, 0, 0, 0, 0, time.UTC)
+	if today.Before(birthdate) {
+		return 0
+	}
+	age := ty - by
+	anniversary := birthdate.AddDate(age, 0, 0)
+	if anniversary.After(today) {
+		age--
+	}
+	return age
+}
\ No newline at end of file