Adiciona tratamento de erros para inscrição em atividades e mensagens de feedback ao usuário

Author: 2code4coffee

src/static/app.js

@@ -66,15 +66,25 @@ document.addEventListener("DOMContentLoaded", () => {
         }
       );
 
+      if (!response.ok) {
+        console.error(`HTTP Error: ${response.status} - ${response.statusText}`);
+      }
+
       const result = await response.json();
 
       if (response.ok) {
         messageDiv.textContent = result.message;
         messageDiv.className = "success";
         signupForm.reset();
         fetchActivities(); // Atualizar a lista de atividades
+      } else if (response.status === 401) {
+        messageDiv.textContent = "Unauthorized: Please log in to sign up for activities.";
+        messageDiv.className = "error";
+      } else if (response.status === 404) {
+        messageDiv.textContent = "Activity not found. Please try again.";
+        messageDiv.className = "error";
       } else {
-        messageDiv.textContent = result.detail || "An error occurred";
+        messageDiv.textContent = result.detail || "An unexpected error occurred.";
         messageDiv.className = "error";
       }
 
@@ -85,10 +95,10 @@ document.addEventListener("DOMContentLoaded", () => {
         messageDiv.classList.add("hidden");
       }, 5000);
     } catch (error) {
-      messageDiv.textContent = "Failed to sign up. Please try again.";
+      console.error("Network or server error:", error);
+      messageDiv.textContent = "Failed to sign up. Please check your connection and try again.";
       messageDiv.className = "error";
       messageDiv.classList.remove("hidden");
-      console.error("Error signing up:", error);
     }
   });