3 files changed, 28 insertions, 0 deletions
diff --git a/ui/messages/base.go b/ui/messages/base.go
index d9db866..f54c2cd 100644
--- a/ui/messages/base.go
+++ b/ui/messages/base.go
@@ -191,6 +191,12 @@ func (msg *BaseMessage) FormatDate() string {
 	return msg.MsgTimestamp.Format(DateFormat)
 }
 
+func (msg *BaseMessage) SameDate(message UIMessage) bool {
+	year1, month1, day1 := msg.Timestamp().Date()
+	year2, month2, day2 := message.Timestamp().Date()
+	return day1 == day2 && month1 == month2 && year1 == year2
+}
+
 func (msg *BaseMessage) ID() string {
 	if len(msg.MsgID) == 0 {
 		return msg.MsgTxnID
diff --git a/ui/messages/expandedtextmessage.go b/ui/messages/expandedtextmessage.go
index 4a4ed24..b2005b9 100644
--- a/ui/messages/expandedtextmessage.go
+++ b/ui/messages/expandedtextmessage.go
@@ -17,7 +17,10 @@
 package messages
 
 import (
+	"time"
+
 	"maunium.net/go/mautrix"
+	"maunium.net/go/tcell"
 
 	"maunium.net/go/gomuks/config"
 	"maunium.net/go/gomuks/ui/messages/tstring"
@@ -36,6 +39,24 @@ func NewExpandedTextMessage(event *mautrix.Event, displayname string, text tstri
 	}
 }
 
+var ZeroTime = time.Time{}
+
+func NewDateChangeMessage(text string) UIMessage {
+	midnight := time.Now()
+	midnight = time.Date(midnight.Year(), midnight.Month(), midnight.Day(),
+		0, 0, 0, 0,
+		midnight.Location())
+	return &ExpandedTextMessage{
+		BaseMessage: BaseMessage{
+			MsgSenderID:  "*",
+			MsgSender:    "*",
+			MsgTimestamp: midnight,
+			MsgIsService: true,
+		},
+		MsgText: tstring.NewColorTString(text, tcell.ColorGreen),
+	}
+}
+
 func (msg *ExpandedTextMessage) GenerateText() tstring.TString {
 	return msg.MsgText
 }
diff --git a/ui/messages/message.go b/ui/messages/message.go
index bd78e5d..c1f2014 100644
--- a/ui/messages/message.go
+++ b/ui/messages/message.go
@@ -35,6 +35,7 @@ type UIMessage interface {
 	TimestampColor() tcell.Color
 	FormatTime() string
 	FormatDate() string
+	SameDate(message UIMessage) bool
 
 	CalculateBuffer(preferences config.UserPreferences, width int)
 	Draw(screen mauview.Screen)