Notes

Certainly! If you want to create a new endpoint to retrieve the events a user has joined, you can add a new `HttpGet` method in your controller. Here's an example:

```csharp
[HttpGet("get-appointments/{username}")]
public ActionResult GetAppointments(string username)
{
if (UserEvents.ContainsKey(username))
{
List<string> joinedEvents = UserEvents[username];
List<object> joinedEventInfo = new List<object>();

foreach (string joinedEvent in joinedEvents)
{
// Extract event name from joinedEvent string
string eventName = joinedEvent.Split(',')[1].Trim().Split()[1].Trim();

// Find the event in Events list
Event eventDetails = Events.FirstOrDefault(e => e.Name == eventName);

if (eventDetails != null)
{
// Construct joined event information
var eventInfo = new
{
Name = eventDetails.Name,
DateTime = eventDetails.DateTime,
Location = eventDetails.Location
};
joinedEventInfo.Add(eventInfo);
}
}

return Ok(joinedEventInfo);
}
else
{
return NotFound($"User '{username}' not found.");
}
}
```

In this code, the new `GetAppointments` endpoint retrieves the events a user has joined, providing information about the event name, datetime, and location. Adjust this structure based on your specific requirements. The resulting JSON response will include details about the events the specified user has joined.