From 38cf923537aa79bcde9cefc09dc322d61ef651b2 Mon Sep 17 00:00:00 2001
From: David Legrand <1110600+davlgd@users.noreply.github.com>
Date: Sun, 18 Feb 2024 13:45:37 +0100
Subject: [PATCH] time: add a .http_header_string() method on Time (#20861)

---
 vlib/time/format.v           | 8 ++++++++
 vlib/time/time_format_test.v | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/vlib/time/format.v b/vlib/time/format.v
index 9c7a24a1bfad4d..d3e2f9f280d3de 100644
--- a/vlib/time/format.v
+++ b/vlib/time/format.v
@@ -470,6 +470,14 @@ pub fn (t Time) utc_string() string {
 	return utc_string
 }
 
+// http_header_string returns a date string in the format used in HTTP headers, as defined in RFC 2616.
+pub fn (t Time) http_header_string() string {
+	day_str := t.weekday_str()
+	month_str := t.smonth()
+	http_header_string := '${day_str}, ${t.day} ${month_str} ${t.year} ${t.hour:02d}:${t.minute:02d}:${t.second:02d} GMT'
+	return http_header_string
+}
+
 // mceil returns the least integer value greater than or equal to x.
 fn mceil(x f64) f64 {
 	if x > 0 {
diff --git a/vlib/time/time_format_test.v b/vlib/time/time_format_test.v
index e92472c6bac2d8..a939f4601c1a11 100644
--- a/vlib/time/time_format_test.v
+++ b/vlib/time/time_format_test.v
@@ -86,3 +86,7 @@ fn test_get_fmt_str() {
 fn test_utc_string() {
 	assert 'Fri, 11 Jul 1980 21:23:42 UTC' == time_to_test.utc_string()
 }
+
+fn test_http_header_string() {
+	assert 'Fri, 11 Jul 1980 21:23:42 GMT' == time_to_test.http_header_string()
+}