[GH-733] Updated the "issue_creations" subscription to post notificat…

…ion when an issue is labeled/reopened (#736)

* [MM-177] Updated the "issue_creations" subscription to post notification when a issue is labelled

* [MM-201] Review fix

server/plugin/command.go

@@ -80,7 +80,7 @@ func validateFeatures(features []string) (bool, []string) {
 	if valid && hasLabel {
 		// must have "pulls" or "issues" in features when using a label
 		for _, f := range features {
-			if f == featurePulls || f == featureIssues {
+			if f == featurePulls || f == featureIssues || f == featureIssueCreation {
 				return valid, invalidFeatures
 			}
 		}
@@ -415,7 +415,7 @@ func (p *Plugin) handleSubscribesAdd(_ *plugin.Context, args *model.CommandArgs,
 		if !ok {
 			msg := fmt.Sprintf("Invalid feature(s) provided: %s", strings.Join(ifs, ","))
 			if len(ifs) == 0 {
-				msg = "Feature list must have \"pulls\" or \"issues\" when using a label."
+				msg = "Feature list must have \"pulls\", \"issues\" or \"issue_creations\" when using a label."
 			}
 			return msg
 		}

server/plugin/webhook.go

@@ -590,7 +590,7 @@ func (p *Plugin) postIssueEvent(event *github.IssuesEvent) {
 			continue
 		}
 
-		if sub.IssueCreations() && action != actionOpened {
+		if sub.IssueCreations() && action != actionOpened && action != actionReopened && action != actionLabeled {
 			continue
 		}