Add flash message when digest has been emailed.

app/githop.go

@@ -229,10 +229,15 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 		"RepositoryCount": repositoryCount,
 		"EmailAddress":    emailAddress,
 	}
+	flashes := session.Flashes()
+	if len(flashes) > 0 {
+		session.Save(r, w)
+	}
 	var data = map[string]interface{}{
 		"User":            user,
 		"SettingsSummary": settingsSummary,
 		"DetectTimezone":  !account.HasTimezoneSet,
+		"Flashes":         flashes,
 	}
 	if err := templates["index"].Execute(w, data); err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -281,6 +286,8 @@ func sendDigestHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	session.AddFlash("Digest emailed!")
+	session.Save(r, w)
 	indexUrl, _ := router.Get("index").URL()
 	http.Redirect(w, r, indexUrl.String(), http.StatusFound)
 }

app/static/main.css

@@ -85,3 +85,20 @@ input[type="submit"].destructive {
   text-decoration: underline;
   color: #900;
 }
+
+.flash {
+  position: absolute;
+  top: 20px;
+  right: 20px;
+  background: rgba(0, 0, 0, 0.75);
+  border-radius: 4px;
+  color: #fff;
+  font-size: 12pt;
+  padding: 10px;
+  transition: opacity ease-in-out 300ms;
+  opacity: 0;
+}
+
+.flash.visible {
+  opacity: 1;
+}

app/templates/index.html

@@ -2,6 +2,10 @@
 
 {{define "body"}}
 
+{{range .Flashes}}
+  {{template "flash" .}}
+{{end}}
+
 <p>
   Signed in as
   <a href="https://github.com/{{.User.Login}}"