Added full message handling system with archive view, pagination, and send support

- Implemented message inbox and archived messages view
- Added pagination logic to both inbox and archive handlers
- Integrated message sending functionality with CSRF protection
- Updated schema to include `archived_at` timestamp
- Included archive button and logic with feedback flash messaging
- Fixed message dropdown routing and rendering in topbar
- Cleaned up template load paths and error handling

handlers/messages.go

@@ -72,3 +72,67 @@ func ArchiveMessageHandler(db *sql.DB) http.HandlerFunc {
 		http.Redirect(w, r, "/account/messages", http.StatusSeeOther)
 	}
 }
+
+func ArchivedMessagesHandler(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		userID, ok := helpers.GetCurrentUserID(r)
+		if !ok {
+			helpers.RenderError(w, r, 403)
+			return
+		}
+
+		page := helpers.Atoi(r.URL.Query().Get("page"))
+		if page < 1 {
+			page = 1
+		}
+		perPage := 10
+
+		messages := storage.GetArchivedMessages(db, userID, page, perPage)
+		hasMore := len(messages) == perPage
+
+		data := BuildTemplateData(db, w, r)
+		context := helpers.TemplateContext(w, r, data)
+		context["Messages"] = messages
+		context["Page"] = page
+		context["HasMore"] = hasMore
+
+		tmpl := helpers.LoadTemplateFiles("archived.html", "templates/account/messages/archived.html")
+		tmpl.ExecuteTemplate(w, "layout", context)
+	}
+}
+
+func SendMessageHandler(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		switch r.Method {
+		case http.MethodGet:
+			// Display the form
+			data := BuildTemplateData(db, w, r)
+			context := helpers.TemplateContext(w, r, data)
+			tmpl := helpers.LoadTemplateFiles("send-message.html", "templates/account/messages/send.html")
+
+			if err := tmpl.ExecuteTemplate(w, "layout", context); err != nil {
+				helpers.RenderError(w, r, 500)
+			}
+		case http.MethodPost:
+			// Handle form submission
+			senderID, ok := helpers.GetCurrentUserID(r)
+			if !ok {
+				helpers.RenderError(w, r, 403)
+				return
+			}
+
+			recipientID := helpers.Atoi(r.FormValue("recipient_id"))
+			subject := r.FormValue("subject")
+			body := r.FormValue("message")
+
+			if err := storage.SendMessage(db, senderID, recipientID, subject, body); err != nil {
+				helpers.SetFlash(w, r, "Failed to send message.")
+			} else {
+				helpers.SetFlash(w, r, "Message sent.")
+			}
+			http.Redirect(w, r, "/account/messages", http.StatusSeeOther)
+		default:
+			helpers.RenderError(w, r, 405)
+		}
+	}
+}