public static void CreateUser(string username, string authCode)
{
ValidateUsername(username);
ValidateAuthCode(authCode);
using (FoursquareContext context = new FoursquareContext())
{
var usernameToLower = username.ToLower();
var dbUser = context.Users.FirstOrDefault(u => u.Username.ToLower() == usernameToLower);
if (dbUser != null)
{
if (dbUser.Username.ToLower() == usernameToLower)
{
throw new ServerErrorException("Username already exists", "ERR_DUP_USR");
}
}
dbUser = new User()
{
Username = usernameToLower,
AuthCode = authCode
};
context.Users.Add(dbUser);
context.SaveChanges();
}
}
public static IEnumerable<PlaceModel> GetNearby(long userId)
{
var context = new FoursquareContext();
var user = context.Users.FirstOrDefault(u => u.Id == userId);
if (user == null)
{
throw new ServerErrorException("User does not exist", "ERR_GEN_SVR");
}
List<PlaceModel> models = new List<PlaceModel>();
foreach (var place in context.Places)
{
if (IsInProximity(place.Latitude, place.Longitude, user.Latitude, user.Longitude))
{
PlaceModel currentModel = new PlaceModel();
currentModel.Name = place.Name;
currentModel.Latitude = place.Latitude;
currentModel.Longitude = place.Longitude;
models.Add(currentModel);
}
}
return models;
}
public static string CheckIn(int userId, int placeId)
{
var context = new FoursquareContext();
var user = context.Users.FirstOrDefault(u => u.Id == userId);
var place = context.Places.FirstOrDefault(p => p.Id == placeId);
if (user == null || place == null)
{
throw new ServerErrorException("User or place does not exist.", "INV_NICK_LEN");
}
user.Latitude = place.Latitude;
user.Longitude = place.Longitude;
context.SaveChanges();
PubnubAPI pubnub = new PubnubAPI(
"pub-c-b428e4fd-a82e-4cc7-a0d2-d4f832fd1d2b", // PUBLISH_KEY
"sub-c-20f993fa-04b4-11e3-a005-02ee2ddab7fe", // SUBSCRIBE_KEY
"sec-c-ZGEzODJjZDEtOWE1ZC00YTE4LTg2NTctNzdiYTc4NjBlODVh", // SECRET_KEY
true // SSL_ON?
);
string channel = place.Id + "" + place.Name;
List<object> publishResult = pubnub.Publish(channel, string.Format("User {0} checked at {1}.", user.Username,
place.Name));
return channel;
}
public static void AddPlace(PlaceModel place)
{
ValidatePlaceModel(place);
var context = new FoursquareContext();
Place newPlace = new Place();
newPlace.Name = place.Name;
newPlace.Latitude = place.Latitude;
newPlace.Longitude = place.Longitude;
context.Places.Add(newPlace);
context.SaveChanges();
}
public static int LoginUser(string sessionKey)
{
ValidateSessionKey(sessionKey);
var context = new FoursquareContext();
using (context)
{
var user = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
if (user == null)
{
throw new ServerErrorException("Invalid user authentication", "INV_USR_AUTH");
}
return (int)user.Id;
}
}
public static IEnumerable<PlaceModel> GetAll()
{
var context = new FoursquareContext();
List<PlaceModel> models = new List<PlaceModel>();
foreach (var place in context.Places)
{
PlaceModel currentModel = new PlaceModel();
currentModel.Name = place.Name;
currentModel.Latitude = place.Latitude;
currentModel.Longitude = place.Longitude;
models.Add(currentModel);
}
return models;
}
public static string LoginUser(string username, string authCode, out string nameToReturn, out int id)
{
ValidateUsername(username);
ValidateAuthCode(authCode);
var context = new FoursquareContext();
using (context)
{
var usernameToLower = username.ToLower();
var user = context.Users.FirstOrDefault(u => u.Username.ToLower() == usernameToLower && u.AuthCode == authCode);
if (user == null)
{
throw new ServerErrorException("Invalid user authentication", "INV_USR_AUTH");
}
var sessionKey = GenerateSessionKey((int)user.Id);
user.SessionKey = sessionKey;
context.SaveChanges();
nameToReturn = user.Username;
id = (int)user.Id;
return sessionKey;
}
}
public static void AddComment(int userId, int placeId, CommentModel comment)
{
ValidateComment(comment);
FoursquareContext context = new FoursquareContext();
var place = context.Places.FirstOrDefault(p => p.Id == placeId);
if (place == null)
{
throw new ServerErrorException("Place does not exist anymore.", "INV_NICK_LEN");
}
Comment newComment = new Comment();
newComment.Text = comment.Text;
var user = context.Users.FirstOrDefault(u => u.Id == userId);
if (user == null)
{
throw new ServerErrorException("User does not exist anymore.", "INV_NICK_LEN");
}
newComment.User = user;
place.Comments.Add(newComment);
context.SaveChanges();
}
public static void LogoutUser(string sessionKey)
{
ValidateSessionKey(sessionKey);
var context = new FoursquareContext();
using (context)
{
var user = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
if (user == null)
{
throw new ServerErrorException("Invalid user authentication", "INV_USR_AUTH");
}
user.SessionKey = null;
context.SaveChanges();
}
}
