From f03dd4ac4ff12f0f05f46554ea7c9b785dc5f74f Mon Sep 17 00:00:00 2001
From: kercylan98 <kercylan@gmail.com>
Date: Fri, 10 Nov 2023 12:15:18 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20times=20=E5=8C=85=E6=94=AF=E6=8C=81?=
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---
 utils/times/offset.go      | 31 +++++++++++++++++++++++++++++++
 utils/times/offset_test.go | 17 +++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 utils/times/offset.go
 create mode 100644 utils/times/offset_test.go

diff --git a/utils/times/offset.go b/utils/times/offset.go
new file mode 100644
index 0000000..4d09c05
--- /dev/null
+++ b/utils/times/offset.go
@@ -0,0 +1,31 @@
+package times
+
+import (
+	"sync"
+	"time"
+)
+
+var sourceLocation = time.Local
+var offsetLock sync.Mutex
+
+// SetGlobalTimeOffset 设置全局时间偏移量
+func SetGlobalTimeOffset(offset time.Duration) {
+	offsetLock.Lock()
+	defer offsetLock.Unlock()
+	time.Local = sourceLocation
+	_, currentOffset := time.Now().Zone()
+	newOffset := currentOffset + int(offset.Seconds())
+	location := time.FixedZone("OFFSET", newOffset)
+	time.Local = location
+}
+
+// NowByNotOffset 获取未偏移的当前时间
+func NowByNotOffset() time.Time {
+	offsetLock.Lock()
+	defer offsetLock.Unlock()
+	offset := time.Local
+	time.Local = sourceLocation
+	now := time.Now()
+	time.Local = offset
+	return now
+}
diff --git a/utils/times/offset_test.go b/utils/times/offset_test.go
new file mode 100644
index 0000000..3c618bb
--- /dev/null
+++ b/utils/times/offset_test.go
@@ -0,0 +1,17 @@
+package times_test
+
+import (
+	"fmt"
+	"github.com/kercylan98/minotaur/utils/times"
+	"testing"
+	"time"
+)
+
+func TestSetGlobalTimeOffset(t *testing.T) {
+	fmt.Println(time.Now())
+	times.SetGlobalTimeOffset(-times.Hour)
+	fmt.Println(time.Now())
+	times.SetGlobalTimeOffset(times.Hour)
+	fmt.Println(time.Now())
+	fmt.Println(times.NowByNotOffset())
+}