Notes

This my backend when I use join function in postman it not no user found can show and correct the error in that


Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Identity.Data;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using System.Linq;
using WebApplication10.models;

namespace WebApplication10.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class EvenshtController : ControllerBase
{
private static readonly List<User> Users = new List<User>();
private static readonly List<Event> Events = new List<Event>();


private static readonly Dictionary<string, List<string>> EventDetails = new Dictionary<string, List<string>>();
private static readonly Dictionary<string, List<string>> UserEvents = new Dictionary<string, List<string>>();

// POST api/event/register
[HttpPost("register")]
public IActionResult Register(User user)
{
if (Users.Any(u => u.Username == user.Username))
{
return BadRequest("user already exist");

}
Users.Add(user);
return Ok("registration sucessfull ");
}

// POST api/event/login
[HttpPost("login")]
public IActionResult Login([FromBody] User user)
{
if (ModelState.IsValid)
{
if (Users.Any(u => u.Username == user.Username && u.Password == user.Password))
{
return Ok(new { message = "Login successful", username = user.Username });
}
return BadRequest("Invalid credentials.");

}
return BadRequest("Invalid model state");

}

// GET api/event/upcoming
[HttpGet("upcoming")]
public IActionResult GetUpcomingEvents()
{
if (Events.Count == 0)
{
return Ok("no events yet");
}
return Ok(Events);
}


[HttpPost("create")]
public ActionResult CreateEvent([FromBody] Event ev)
{
if (ev == null)
{
return BadRequest("Invalid data");
}

// Check if an event with the same location and date-time already exists
if (Events.Any(e => e.Location == ev.Location && e.Date == ev.Date))
{
return BadRequest("An event with the same location and date-time already exists");
}

Events.Add(ev);
return Ok($"Event {ev.Name} created successfully!");
}
[HttpPut("edit/{eventName}")]
public ActionResult EditEvent(string eventName, [FromBody] Event updatedEvent)
{
var existingEvent = Events.FirstOrDefault(e => e.Name == eventName);

if (existingEvent == null)
{
return NotFound($"Event with name {eventName} not found");
}

// Check if the updated location and date-time conflict with other events
if (Events.Any(e => e.Name != eventName && e.Location == updatedEvent.Location && e.Date == updatedEvent.Date && e.Description == updatedEvent.Description))
{
return BadRequest("Another event with the same location and date-time already exists");
}

// Update the existing event
existingEvent.Name = updatedEvent.Name;
existingEvent.Location = updatedEvent.Location;
existingEvent.Date = updatedEvent.Date;
existingEvent.Description = updatedEvent.Description;

return Ok($"Event {eventName} updated successfully!");
}

[HttpDelete("delete/{eventName}")]
public ActionResult DeleteEvent(string eventName)
{
var eventToRemove = Events.FirstOrDefault(e => e.Name == eventName);

if (eventToRemove == null)
{
return NotFound($"Event with name {eventName} not found");
}

Events.Remove(eventToRemove);
return Ok($"Event {eventName} deleted successfully!");
}

//join

[HttpPost("join")]
public ActionResult JoinEvent([FromBody] JoinRequest joinRequest)
{
string eventName = joinRequest.Eventname;
string username = joinRequest.Username;

// Check if the event exists
Event eventDetails = Events.FirstOrDefault(e => e.Name == eventName);

if (eventDetails == null)
{
return NotFound($"Event '{eventName}' does not exist.");
}

if (UserEvents.ContainsKey(username))
{
// Ensure the user's event list is initialized
UserEvents[username] = UserEvents[username] ?? new List<string>();

// Check if the user has already joined the event
if (UserEvents[username].Contains($"Participant: {username}, Event: {eventName}"))
{
return Conflict($"User '{username}' has already joined the event '{eventName}'.");
}

// Check if the user has already booked an event on the same date
if (UserEvents[username].Any(e => Events.Any(ev => ev.Date.Date == eventDetails.Date.Date)))
{
return Conflict($"User '{username}' has already booked an event on the same date.");
}

// Add the user to the event
UserEvents[username].Add($"Participant: {username}, Event: {eventName}");

// Add more event information as needed

return Ok($"Successfully joined event: {eventName}");
}
else
{
return NotFound($"User '{username}' not found.");
}
}




[HttpGet("track/{username}")]
public IActionResult TrackEvents(string username)
{
if (UserEvents.ContainsKey(username))
{
List<string> trackedEvents = UserEvents[username];

if (trackedEvents.Count == 0)
{
return Ok("No events tracked yet.");
}

List<Event> userEventsDetails = new List<Event>();

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

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

if (eventDetails != null)
{
userEventsDetails.Add(eventDetails);
}
}

// Sort events by date
userEventsDetails = userEventsDetails.OrderBy(e => e.Date).ToList();

// Construct detailed event information
List<string> detailedEventInfo = userEventsDetails
.Select(e => $"Event: {e.Name}, Location: {e.Location}, Date: {e.Date}, Description: {e.Description}")
.ToList();

return Ok(detailedEventInfo);
}

return Ok("No events tracked yet.");
}

///manage the event
[HttpGet("manage/{username}")]
public ActionResult Manage(string username)
{
if (UserEvents.ContainsKey(username))
{
List<string> trackedEvents = UserEvents[username];
List<string> detailedEventInfo = new List<string>();

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

// Find the event in Events list created by the specified user




Event eventDetails = Events.FirstOrDefault(e => e.Name == eventName && e.Creator == username);

if (eventDetails != null)
{
// Construct detailed event information
string eventInfo = $"Event: {eventDetails.Name}, Location: {eventDetails.Location}, Date: {eventDetails.Date}";
detailedEventInfo.Add(eventInfo);
}
}

return Ok(detailedEventInfo);
}
else
{
return NotFound($"User '{username}' not found.");
}
}
[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(); // Fix the index

// 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.Date,
Location = eventDetails.Location
};
joinedEventInfo.Add(eventInfo);
}
}

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


}
}