From 7113cf9406518bb931cd4f759c2181764b861941 Mon Sep 17 00:00:00 2001
From: Chad Kunde <Kunde21@gmail.com>
Date: Fri, 1 Jul 2022 23:29:35 +0800
Subject: [PATCH] configure default location for time parsing

Interacting with servers that utilize the ISO-8601 Local Time variants in
request and response payloads can configure the request marshaling using
NormalizeTimeForMarshal setting, but don't have a ready method for setting the
local time zone when parsing the response fields.

Keep UTC as the default location, to maintain the previous functionality.

Signed-off-by: Chad Kunde <Kunde21@gmail.com>
---
 date.go   | 6 +++---
 format.go | 2 +-
 time.go   | 5 ++++-
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/date.go b/date.go
index f0b3109..3c93381 100644
--- a/date.go
+++ b/date.go
@@ -57,7 +57,7 @@ func (d *Date) UnmarshalText(text []byte) error {
 	if len(text) == 0 {
 		return nil
 	}
-	dd, err := time.Parse(RFC3339FullDate, string(text))
+	dd, err := time.ParseInLocation(RFC3339FullDate, string(text), DefaultTimeLocation)
 	if err != nil {
 		return err
 	}
@@ -107,7 +107,7 @@ func (d *Date) UnmarshalJSON(data []byte) error {
 	if err := json.Unmarshal(data, &strdate); err != nil {
 		return err
 	}
-	tt, err := time.Parse(RFC3339FullDate, strdate)
+	tt, err := time.ParseInLocation(RFC3339FullDate, strdate, DefaultTimeLocation)
 	if err != nil {
 		return err
 	}
@@ -126,7 +126,7 @@ func (d *Date) UnmarshalBSON(data []byte) error {
 	}
 
 	if data, ok := m["data"].(string); ok {
-		rd, err := time.Parse(RFC3339FullDate, data)
+		rd, err := time.ParseInLocation(RFC3339FullDate, data, DefaultTimeLocation)
 		if err != nil {
 			return err
 		}
diff --git a/format.go b/format.go
index 172055d..ad3b3c3 100644
--- a/format.go
+++ b/format.go
@@ -109,7 +109,7 @@ func (f *defaultFormats) MapStructureHookFunc() mapstructure.DecodeHookFunc { //
 			if to == tpe {
 				switch v.Name {
 				case "date":
-					d, err := time.Parse(RFC3339FullDate, data)
+					d, err := time.ParseInLocation(RFC3339FullDate, data, DefaultTimeLocation)
 					if err != nil {
 						return nil, err
 					}
diff --git a/time.go b/time.go
index 023676e..921e712 100644
--- a/time.go
+++ b/time.go
@@ -86,6 +86,9 @@ var (
 	// NormalizeTimeForMarshal provides a normalization function on time befeore marshalling (e.g. time.UTC).
 	// By default, the time value is not changed.
 	NormalizeTimeForMarshal = func(t time.Time) time.Time { return t }
+
+	// DefaultTimeLocation provides a location for a time when the time zone is not encoded in the string (ex: ISO8601 Local variants).
+	DefaultTimeLocation = time.UTC
 )
 
 // ParseDateTime parses a string that represents an ISO8601 time or a unix epoch
@@ -95,7 +98,7 @@ func ParseDateTime(data string) (DateTime, error) {
 	}
 	var lastError error
 	for _, layout := range DateTimeFormats {
-		dd, err := time.Parse(layout, data)
+		dd, err := time.ParseInLocation(layout, data, DefaultTimeLocation)
 		if err != nil {
 			lastError = err
 			continue