Make sidebar poll for notifications every 10s

internal/webserver/handler_login.go

@@ -115,8 +115,6 @@ func (app *Application) ChangeSession(w http.ResponseWriter, r *http.Request) {
 		app.error_400_with_message(w, fmt.Sprintf("User not in database: %s", form.AccountName))
 		return
 	}
-	data := Notifications{
+	data := Notifications{NumMessageNotifications: len(app.Profile.GetUnreadConversations(app.ActiveUser.ID))}
-		NumMessageNotifications: len(app.Profile.GetUnreadConversations(app.ActiveUser.ID)),
-	}
 	app.buffered_render_htmx(w, "nav-sidebar", PageGlobalData{}, data)
 }

internal/webserver/handler_sidebar.go

@@ -0,0 +1,18 @@
+package webserver
+
+import (
+	"net/http"
+)
+
+func (app *Application) NavSidebarPollUpdates(w http.ResponseWriter, r *http.Request) {
+	app.traceLog.Printf("'NavSidebarPollUpdates' handler (path: %q)", r.URL.Path)
+
+	// Must be an HTMX request, otherwise HTTP 400
+	if r.Header.Get("HX-Request") != "true" {
+		app.error_400_with_message(w, "This is an HTMX-only endpoint, not a page")
+		return
+	}
+
+	data := Notifications{NumMessageNotifications: len(app.Profile.GetUnreadConversations(app.ActiveUser.ID))}
+	app.buffered_render_htmx(w, "nav-sidebar", PageGlobalData{}, data)
+}

internal/webserver/server.go

@@ -124,6 +124,8 @@ func (app *Application) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		http.StripPrefix("/lists", http.HandlerFunc(app.Lists)).ServeHTTP(w, r)
 	case "messages":
 		http.StripPrefix("/messages", http.HandlerFunc(app.Messages)).ServeHTTP(w, r)
+	case "nav-sidebar-poll-updates":
+		app.NavSidebarPollUpdates(w, r)
 	default:
 		app.UserFeed(w, r)
 	}

internal/webserver/tpl/includes/nav_sidebar.tpl

@@ -1,5 +1,5 @@
 {{define "nav-sidebar"}}
-  <nav id="nav-sidebar" class="nav-sidebar">
+  <nav id="nav-sidebar" class="nav-sidebar" hx-trigger="load delay:10s" hx-get="/nav-sidebar-poll-updates" hx-swap="outerHTML">
     <div id="logged-in-user-info">
       <div class="button row" hx-get="/login" hx-trigger="click" hx-target="body" hx-push-url="true">
         {{template "author-info" active_user}}