// AddTagTo <albumName> <tag>
public static string Execute(string[] data)
{
var albumName = data[1];
var tag = data[2];
using (var context = new PhotoShareContext())
{
var loggedUser = IsLogged.IsLoggedIn(context);
Album album = context.Albums
.Include(a => a.AlbumRoles)
.ThenInclude(ar => ar.User)
.FirstOrDefault(a => a.Name == albumName);
User albumOwner = album.AlbumRoles
.FirstOrDefault(x => x.Role == Role.Owner)
.User;
if (loggedUser != albumOwner)
{
throw new InvalidOperationException("Invalid credentials!");
}
Tag tagToAdd = context.Tags.FirstOrDefault(t => t.Name == "#" + tag);
if (album == null || tagToAdd == null)
{
throw new ArgumentException($"Either {tag} or {albumName} do not exist!");
}
AlbumTag albumTag = new AlbumTag()
{
Album = album,
Tag = tagToAdd
};
context.AlbumTags.Add(albumTag);
context.SaveChanges();
}
return($"Tag {tag} added to {albumName}!");
}
// ModifyUser <username> <property> <new value>
// For example:
// ModifyUser <username> Password <NewPassword>
// ModifyUser <username> BornTown <newBornTownName>
// ModifyUser <username> CurrentTown <newCurrentTownName>
// !!! Cannot change username
public static string Execute(string[] data)
{
string username = data[1];
string property = data[2].ToLower();
string newValue = data[3];
var exceptionMessage = $"Value {newValue} not valid." + Environment.NewLine;
var errorTown = $"Town {newValue} not found!";
using (var context = new Data.PhotoShareContext())
{
User loggedUser = IsLogged.IsLoggedIn(context);
User user = context.Users
.Where(u => u.Username == username)
.FirstOrDefault();
if (loggedUser != user)
{
throw new InvalidOperationException("Invalid credentials!");
}
if (user == null)
{
throw new ArgumentException($"User {username} not found!");
}
switch (property)
{
case "password":
if (newValue.Length < 6 ||
newValue.Length > 50 ||
!newValue.Any(c => Char.IsDigit(c)) ||
!newValue.Any(c => Char.IsLower(c)))
{
throw new ArgumentException(exceptionMessage + "Invalid password");
}
user.Password = newValue;
break;
case "borntown":
var bornTown = context.Towns
.Where(t => t.Name == newValue)
.FirstOrDefault();
if (bornTown == null)
{
throw new ArgumentException(exceptionMessage + errorTown);
}
user.BornTown = bornTown;
break;
case "currenttown":
var currentown = context.Towns
.Where(t => t.Name == newValue)
.FirstOrDefault();
if (currentown == null)
{
throw new ArgumentException(exceptionMessage + errorTown);
}
user.CurrentTown = currentown;
break;
default:
throw new ArgumentException($"Property {property} not supported!");
}
context.SaveChanges();
return($"User {username} {property} is {newValue}.");
}
}
// CreateAlbum <username> <albumTitle> <BgColor> <tag1> <tag2>...<tagN>
public static string Execute(string[] data)
{
string username = data[1];
string albumTitle = data[2];
if (data.Length < 3)
{
throw new ArgumentException($"Color {String.Empty} not found!");
}
string color = data[3];
string[] tags = data.Skip(4).ToArray();
var result = "";
using (var context = new PhotoShareContext())
{
var loggedUser = IsLogged.IsLoggedIn(context);
var existingUser = context.Users
.FirstOrDefault(u => u.Username == username);
if (loggedUser != existingUser)
{
throw new InvalidOperationException("Invalid credentials!");
}
if (existingUser == null)
{
throw new ArgumentException($"User {username} not found!");
}
if (context.Albums.Any(a => a.Name == albumTitle))
{
throw new ArgumentException($"Album {albumTitle} exists!");
}
Album album = new Album()
{
Name = albumTitle
};
try
{
Color colorValue = (Color)Enum.Parse(typeof(Color), color);
album.BackgroundColor = colorValue;
context.Albums.Add(album);
AlbumRole albumRole = new AlbumRole()
{
User = existingUser,
Album = album,
Role = Role.Owner
};
context.AlbumRoles.Add(albumRole);
}
catch (ArgumentException)
{
throw new ArgumentException($"Color {color} not found!");
}
foreach (var tag in tags)
{
var tagExists = context.Tags
.Where(t => t.Name == "#" + tag)
.FirstOrDefault();
if (tagExists == null)
{
throw new ArgumentException($"Invalid tags!");
}
AlbumTag albumTag = new AlbumTag()
{
Album = album,
Tag = tagExists
};
context.AlbumTags.Add(albumTag);
}
context.SaveChanges();
result = $"Album {albumTitle} successfully created!";
}
return(result);
}
