Return subscription from channel-preview [skip-tests]

scnserver/models/channel.go

@@ -24,6 +24,8 @@ type ChannelPreview struct {
 	DisplayName     string    `json:"display_name"`
 	DescriptionName *string   `json:"description_name"`
 	MessagesSent    int       `json:"messages_sent"`
+
+	Subscription *Subscription `json:"subscription"`
 }
 
 func (c Channel) WithSubscription(sub *Subscription) ChannelWithSubscription {
@@ -33,7 +35,7 @@ func (c Channel) WithSubscription(sub *Subscription) ChannelWithSubscription {
 	}
 }
 
-func (c Channel) Preview() ChannelPreview {
+func (c Channel) Preview(sub *Subscription) ChannelPreview {
 	return ChannelPreview{
 		ChannelID:       c.ChannelID,
 		OwnerUserID:     c.OwnerUserID,
@@ -41,5 +43,6 @@ func (c Channel) Preview() ChannelPreview {
 		DisplayName:     c.DisplayName,
 		DescriptionName: c.DescriptionName,
 		MessagesSent:    c.MessagesSent,
+		Subscription:    sub,
 	}
 }