Add registration validation and more activities

src/app.py

@@ -38,6 +38,45 @@
         "schedule": "Mondays, Wednesdays, Fridays, 2:00 PM - 3:00 PM",
         "max_participants": 30,
         "participants": ["john@mergington.edu", "olivia@mergington.edu"]
+    },
+    # Sports activities
+    "Soccer Team": {
+        "description": "Join the school soccer team and compete in local leagues",
+        "schedule": "Tuesdays and Thursdays, 4:00 PM - 5:30 PM",
+        "max_participants": 18,
+        "participants": ["lucas@mergington.edu", "mia@mergington.edu"]
+    },
+    "Basketball Club": {
+        "description": "Practice basketball skills and play friendly matches",
+        "schedule": "Wednesdays, 3:30 PM - 5:00 PM",
+        "max_participants": 15,
+        "participants": ["liam@mergington.edu", "ava@mergington.edu"]
+    },
+    # Artistic activities
+    "Art Club": {
+        "description": "Explore painting, drawing, and other visual arts",
+        "schedule": "Mondays, 3:30 PM - 5:00 PM",
+        "max_participants": 16,
+        "participants": ["ella@mergington.edu", "noah@mergington.edu"]
+    },
+    "Drama Society": {
+        "description": "Participate in theater productions and acting workshops",
+        "schedule": "Fridays, 4:00 PM - 6:00 PM",
+        "max_participants": 20,
+        "participants": ["amelia@mergington.edu", "jack@mergington.edu"]
+    },
+    # Intellectual activities
+    "Math Olympiad": {
+        "description": "Prepare for math competitions and solve challenging problems",
+        "schedule": "Thursdays, 3:30 PM - 5:00 PM",
+        "max_participants": 10,
+        "participants": ["charlotte@mergington.edu", "benjamin@mergington.edu"]
+    },
+    "Science Club": {
+        "description": "Conduct experiments and explore scientific concepts",
+        "schedule": "Wednesdays, 4:00 PM - 5:30 PM",
+        "max_participants": 14,
+        "participants": ["henry@mergington.edu", "grace@mergington.edu"]
     }
 }
 
@@ -54,14 +93,18 @@ def get_activities():
 
 @app.post("/activities/{activity_name}/signup")
 def signup_for_activity(activity_name: str, email: str):
-    """Sign up a student for an activity"""
-    # Validate activity exists
-    if activity_name not in activities:
-        raise HTTPException(status_code=404, detail="Activity not found")
+   """Sign up a student for an activity"""
+   # Validate activity exists
+   if activity_name not in activities:
+      raise HTTPException(status_code=404, detail="Activity not found")
+
+   # Get the activity
+   activity = activities[activity_name]
 
-    # Get the specific activity
-    activity = activities[activity_name]
+   # Validate student is not already signed up
+   if email in activity["participants"]:
+     raise HTTPException(status_code=400, detail="Student is already signed up")
 
-    # Add student
-    activity["participants"].append(email)
-    return {"message": f"Signed up {email} for {activity_name}"}
+   # Add student
+   activity["participants"].append(email)
+   return {"message": f"Signed up {email} for {activity_name}"}

src/static/app.js

@@ -20,11 +20,32 @@ document.addEventListener("DOMContentLoaded", () => {
 
         const spotsLeft = details.max_participants - details.participants.length;
 
+        // Lista de participantes formatada
+        let participantsHTML = "";
+        if (details.participants.length > 0) {
+          participantsHTML = `
+            <div class="participants-section">
+              <strong>Participantes:</strong>
+              <ul class="participants-list">
+                ${details.participants.map(email => `<li>${email}</li>`).join("")}
+              </ul>
+            </div>
+          `;
+        } else {
+          participantsHTML = `
+            <div class="participants-section">
+              <strong>Participantes:</strong>
+              <span class="no-participants">Nenhum inscrito ainda.</span>
+            </div>
+          `;
+        }
+
         activityCard.innerHTML = `
           <h4>${name}</h4>
           <p>${details.description}</p>
           <p><strong>Schedule:</strong> ${details.schedule}</p>
           <p><strong>Availability:</strong> ${spotsLeft} spots left</p>
+          ${participantsHTML}
         `;
 
         activitiesList.appendChild(activityCard);

src/static/styles.css

@@ -142,3 +142,28 @@ footer {
   padding: 20px;
   color: #666;
 }
+
+.participants-section {
+  margin-top: 12px;
+  padding-top: 10px;
+  border-top: 1px solid #e0e0e0;
+}
+
+.participants-section strong {
+  color: #3949ab;
+  font-size: 15px;
+}
+
+.participants-list {
+  margin: 8px 0 0 18px;
+  padding-left: 0;
+  list-style-type: disc;
+  color: #333;
+  font-size: 15px;
+}
+
+.no-participants {
+  color: #888;
+  font-style: italic;
+  margin-left: 5px;
+}