From e8907c3c9edbb57dfdfe5f5078b01415f4d54fdc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Dachary?= <loic@dachary.org>
Date: Tue, 9 Nov 2021 08:35:27 +0100
Subject: [PATCH] activitypub: go-fed conformant Clock instance
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Signed-off-by: Loïc Dachary <loic@dachary.org>
---
 modules/activitypub/clock.go      | 28 ++++++++++++++++++++++++++++
 modules/activitypub/clock_test.go | 30 ++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 modules/activitypub/clock.go
 create mode 100644 modules/activitypub/clock_test.go

diff --git a/modules/activitypub/clock.go b/modules/activitypub/clock.go
new file mode 100644
index 0000000000..88bd888e28
--- /dev/null
+++ b/modules/activitypub/clock.go
@@ -0,0 +1,28 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package activitypub
+
+import (
+	"time"
+
+	"code.gitea.io/gitea/modules/setting"
+	"github.com/go-fed/activity/pub"
+)
+
+var _ pub.Clock = &Clock{}
+
+// Clock struct
+type Clock struct{}
+
+// NewClock function
+func NewClock() (c *Clock, err error) {
+	c = &Clock{}
+	return
+}
+
+// Now function
+func (c *Clock) Now() time.Time {
+	return time.Now().In(setting.DefaultUILocation)
+}
diff --git a/modules/activitypub/clock_test.go b/modules/activitypub/clock_test.go
new file mode 100644
index 0000000000..55b0cbb293
--- /dev/null
+++ b/modules/activitypub/clock_test.go
@@ -0,0 +1,30 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package activitypub
+
+import (
+	"regexp"
+	"testing"
+	"time"
+
+	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestClock(t *testing.T) {
+	DefaultUILocation := setting.DefaultUILocation
+	defer func() {
+		setting.DefaultUILocation = DefaultUILocation
+	}()
+	c, err := NewClock()
+	assert.NoError(t, err)
+	setting.DefaultUILocation, err = time.LoadLocation("UTC")
+	assert.NoError(t, err)
+	assert.Regexp(t, regexp.MustCompile(`\+0000$`), c.Now().Format(time.Layout))
+	setting.DefaultUILocation, err = time.LoadLocation("Europe/Paris")
+	assert.NoError(t, err)
+	assert.Regexp(t, regexp.MustCompile(`\+0[21]00$`), c.Now().Format(time.Layout))
+}