✨ Update app and add extracurricular activities

requirements.txt

@@ -1,2 +1,5 @@
 fastapi
 uvicorn
+httpx
+pytest
+pytest-asyncio

src/app.py

@@ -38,6 +38,42 @@
         "schedule": "Mondays, Wednesdays, Fridays, 2:00 PM - 3:00 PM",
         "max_participants": 30,
         "participants": ["john@mergington.edu", "olivia@mergington.edu"]
+    },
+    "Soccer Team": {
+        "description": "Competitive soccer training and matches against other schools",
+        "schedule": "Tuesdays and Thursdays, 4:00 PM - 5:30 PM",
+        "max_participants": 22,
+        "participants": ["lucas@mergington.edu", "liam@mergington.edu"]
+    },
+    "Swimming Club": {
+        "description": "Swim training for all skill levels and competitive meets",
+        "schedule": "Mondays and Wednesdays, 6:00 AM - 7:30 AM",
+        "max_participants": 20,
+        "participants": ["mia@mergington.edu", "noah@mergington.edu"]
+    },
+    "Art Studio": {
+        "description": "Explore painting, drawing, and mixed media techniques",
+        "schedule": "Thursdays, 3:30 PM - 5:00 PM",
+        "max_participants": 15,
+        "participants": ["Isabella@mergington.edu", "ava@mergington.edu"]
+    },
+    "Drama Club": {
+        "description": "Act, direct, and produce theatrical performances",
+        "schedule": "Mondays and Fridays, 4:00 PM - 5:30 PM",
+        "max_participants": 25,
+        "participants": ["charlotte@mergington.edu", "amelia@mergington.edu"]
+    },
+    "Math Olympiad": {
+        "description": "Prepare for math competitions and solve advanced problems",
+        "schedule": "Wednesdays, 3:30 PM - 5:00 PM",
+        "max_participants": 15,
+        "participants": ["ethan@mergington.edu", "harper@mergington.edu"]
+    },
+    "Science Club": {
+        "description": "Conduct experiments and explore STEM topics beyond the classroom",
+        "schedule": "Fridays, 3:30 PM - 5:00 PM",
+        "max_participants": 20,
+        "participants": ["james@mergington.edu", "sofia@mergington.edu"]
     }
 }
 
@@ -62,6 +98,29 @@ def signup_for_activity(activity_name: str, email: str):
     # 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 already signed up for this activity")
+
     # Add student
     activity["participants"].append(email)
     return {"message": f"Signed up {email} for {activity_name}"}
+
+
+@app.delete("/activities/{activity_name}/signup")
+def unregister_from_activity(activity_name: str, email: str):
+    """Unregister a student from an activity"""
+    # Validate activity exists
+    if activity_name not in activities:
+        raise HTTPException(status_code=404, detail="Activity not found")
+
+    # Get the specific activity
+    activity = activities[activity_name]
+
+    # Validate student is signed up
+    if email not in activity["participants"]:
+        raise HTTPException(status_code=400, detail="Student is not registered for this activity")
+
+    # Remove student
+    activity["participants"].remove(email)
+    return {"message": f"Unregistered {email} from {activity_name}"}

src/static/app.js

@@ -24,9 +24,42 @@ document.addEventListener("DOMContentLoaded", () => {
           <h4>${name}</h4>
           <p>${details.description}</p>
           <p><strong>Schedule:</strong> ${details.schedule}</p>
-          <p><strong>Availability:</strong> ${spotsLeft} spots left</p>
+          <p><strong>Availability:</strong> <span class="spots-badge ${spotsLeft === 0 ? 'spots-full' : spotsLeft <= 3 ? 'spots-low' : 'spots-ok'}">${spotsLeft} spot${spotsLeft !== 1 ? 's' : ''} left</span></p>
+          <details class="participants-section">
+            <summary><strong>Participants</strong> <span class="participant-count">${details.participants.length} / ${details.max_participants}</span></summary>
+            ${details.participants.length === 0 ? '<p class="no-participants">No participants yet — be the first!</p>' : ''}
+          </details>
         `;
 
+        if (details.participants.length > 0) {
+          const detailsEl = activityCard.querySelector(".participants-section");
+          const ul = document.createElement("ul");
+          ul.className = "participants-list";
+          details.participants.forEach(p => {
+            const li = document.createElement("li");
+
+            const icon = document.createElement("span");
+            icon.className = "participant-icon";
+            icon.textContent = "\u{1F464}";
+
+            const emailSpan = document.createElement("span");
+            emailSpan.className = "participant-email";
+            emailSpan.textContent = p;
+
+            const deleteBtn = document.createElement("button");
+            deleteBtn.className = "delete-participant-btn";
+            deleteBtn.innerHTML = "&#128465;";
+            deleteBtn.title = `Unregister ${p}`;
+            deleteBtn.addEventListener("click", () => unregisterParticipant(name, p));
+
+            li.appendChild(icon);
+            li.appendChild(emailSpan);
+            li.appendChild(deleteBtn);
+            ul.appendChild(li);
+          });
+          detailsEl.appendChild(ul);
+        }
+
         activitiesList.appendChild(activityCard);
 
         // Add option to select dropdown
@@ -41,6 +74,25 @@ document.addEventListener("DOMContentLoaded", () => {
     }
   }
 
+  // Unregister a participant from an activity
+  async function unregisterParticipant(activityName, email) {
+    try {
+      const response = await fetch(
+        `/activities/${encodeURIComponent(activityName)}/signup?email=${encodeURIComponent(email)}`,
+        { method: "DELETE" }
+      );
+      const result = await response.json();
+      if (response.ok) {
+        fetchActivities();
+      } else {
+        alert(result.detail || "Failed to unregister participant.");
+      }
+    } catch (error) {
+      console.error("Error unregistering participant:", error);
+      alert("Failed to unregister participant.");
+    }
+  }
+
   // Handle form submission
   signupForm.addEventListener("submit", async (event) => {
     event.preventDefault();
@@ -62,6 +114,7 @@ document.addEventListener("DOMContentLoaded", () => {
         messageDiv.textContent = result.message;
         messageDiv.className = "success";
         signupForm.reset();
+        fetchActivities();
       } else {
         messageDiv.textContent = result.detail || "An error occurred";
         messageDiv.className = "error";

src/static/styles.css

@@ -74,6 +74,124 @@ section h3 {
   margin-bottom: 8px;
 }
 
+.spots-badge {
+  display: inline-block;
+  padding: 2px 8px;
+  border-radius: 12px;
+  font-size: 0.85em;
+  font-weight: bold;
+}
+
+.spots-ok {
+  background-color: #e8f5e9;
+  color: #2e7d32;
+  border: 1px solid #a5d6a7;
+}
+
+.spots-low {
+  background-color: #fff3e0;
+  color: #e65100;
+  border: 1px solid #ffcc80;
+}
+
+.spots-full {
+  background-color: #ffebee;
+  color: #c62828;
+  border: 1px solid #ef9a9a;
+}
+
+.participants-section {
+  margin-top: 12px;
+  border-top: 1px dashed #ddd;
+  padding-top: 10px;
+}
+
+.participants-section summary {
+  cursor: pointer;
+  user-select: none;
+  list-style: none;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 4px 0;
+  color: #1a237e;
+}
+
+.participants-section summary::-webkit-details-marker {
+  display: none;
+}
+
+.participants-section summary::after {
+  content: '\25BC';
+  font-size: 0.7em;
+  transition: transform 0.2s;
+  color: #888;
+}
+
+.participants-section[open] summary::after {
+  transform: rotate(180deg);
+}
+
+.participant-count {
+  font-size: 0.8em;
+  background-color: #e8eaf6;
+  color: #3949ab;
+  border-radius: 10px;
+  padding: 1px 7px;
+  margin-left: 8px;
+  font-weight: normal;
+}
+
+.participants-list {
+  list-style: none;
+  margin-top: 10px;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.participants-list li {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 0.9em;
+  color: #444;
+  background-color: #f0f4ff;
+  border-radius: 6px;
+  padding: 5px 10px;
+  border: 1px solid #d0d8f0;
+}
+
+.participant-icon {
+  font-size: 1em;
+}
+
+.delete-participant-btn {
+  margin-left: auto;
+  background: none;
+  border: none;
+  cursor: pointer;
+  font-size: 1em;
+  padding: 0 2px;
+  color: #c62828;
+  opacity: 0.6;
+  transition: opacity 0.15s, transform 0.15s;
+  line-height: 1;
+}
+
+.delete-participant-btn:hover {
+  opacity: 1;
+  transform: scale(1.2);
+}
+
+.no-participants {
+  margin-top: 10px;
+  font-size: 0.85em;
+  color: #888;
+  font-style: italic;
+}
+
 .form-group {
   margin-bottom: 15px;
 }