// AddTagTo <albumName> <tag>
public string Execute(params string[] args)
{
string albumTitle = args[0];
string tagName = args[1];
if (Session.User == null || !Session.User.AlbumRoles.Any(ar => ar.Album.Name == albumTitle))
{
throw new InvalidOperationException("Invalid credentials!");
}
if (!Checker.AlbumExists(albumTitle) || !Checker.TagsExists(tagName))
{
throw new ArgumentException("Either tag or album do not exist!");
}
using (var db = new PhotoShareContext())
{
Album album = db.Albums.FirstOrDefault(a => a.Name == albumTitle);
Tag tag = db.Tags.FirstOrDefault(t => t.Name == tagName);
AlbumTag albumTag = new AlbumTag()
{
Album = album,
Tag = tag,
};
album.AlbumTags.Add(albumTag);
db.SaveChanges();
}
return($"Tag {tagName} added to {albumTitle}!");
}
// UploadPicture <albumName> <pictureTitle> <pictureFilePath>
public string Execute(string[] data)
{
string albumName = data[0];
string pictureTitle = data[1];
string picturePath = data[2];
if (Session.User == null || Session.User.ProfilePicture.Path != picturePath)
{
throw new InvalidOperationException("Invalid credentials!");
}
if (!Checker.AlbumExists(albumName))
{
throw new ArgumentException($"Album {albumName} not found!");
}
using (var db = new PhotoShareContext())
{
Album album = db.Albums.FirstOrDefault(a => a.Name == albumName);
Picture picture = new Picture()
{
Path = picturePath,
Title = pictureTitle,
Album = album,
};
db.Pictures.Add(picture);
db.SaveChanges();
}
return($"Picture {pictureTitle} added to {albumName}!");
}
// ShareAlbum <albumId> <username> <permission>
// For example:
// ShareAlbum 4 dragon321 Owner
// ShareAlbum 4 dragon11 Viewer
public string Execute(params string[] args)
{
int albumId = int.Parse(args[0]);
string username = args[1];
string permission = args[2];
if (Session.User == null || Session.User.Username != username)
{
throw new InvalidOperationException("Invalid credentials!");
}
if (!Checker.AlbumExists(albumId))
{
throw new ArgumentException($"Album {albumId} not found!");
}
if (!Checker.UserExists(username))
{
throw new ArgumentException($"User {username} not found!");
}
if (!Checker.PermissionIsValid(permission))
{
throw new ArgumentException("Permission must be either “Owner” or “Viewer”!");
}
Role role = (Role)Enum.Parse(typeof(Role), permission);
using (var db = new PhotoShareContext())
{
User user = db.Users.FirstOrDefault(u => u.Username == username);
Album album = db.Albums.Find(albumId);
AlbumRole albumRole = new AlbumRole()
{
Album = album,
Role = role,
User = user,
};
db.AlbumRoles.Add(albumRole);
db.SaveChanges();
return($"Username {username} added to album {album.Name} ({permission})");
}
}
// CreateAlbum <username> <albumTitle> <BgColor> <tag1> <tag2>...<tagN>
public string Execute(params string[] args)
{
string username = args[0];
string albumTitle = args[1];
string bgColor = args[2];
string[] tagStrings = args.Skip(3).ToArray();
if (Session.User == null || Session.User.Username != username)
{
throw new InvalidOperationException("Invalid credentials!");
}
using (var db = new PhotoShareContext())
{
#region Checks
if (!Checker.UserExists(username))
{
throw new ArgumentException($"User {username} not found!");
}
if (Checker.AlbumExists(albumTitle))
{
throw new ArgumentException($"Album {albumTitle} exists!");
}
if (!Checker.ColorExists(bgColor))
{
throw new ArgumentException($"Color {bgColor} not found!");
}
if (!Checker.TagsExists(tagStrings))
{
throw new ArgumentException("Invalid tags!");
}
#endregion
User user = db.Users.FirstOrDefault(u => u.Username == username);
Color color = Enum.Parse <Color>(bgColor, true);
Album album = new Album()
{
Name = albumTitle, BackgroundColor = color
};
db.Albums.Add(album);
db.SaveChanges();
List <AlbumTag> tags = new List <AlbumTag>();
foreach (var t in tagStrings)
{
int tagId = db.Tags.FirstOrDefault(tg => tg.Name == t).Id;
AlbumTag tag = new AlbumTag()
{
AlbumId = album.Id,
TagId = tagId,
};
tags.Add(tag);
}
album.AlbumTags = tags;
AlbumRole albumRole = new AlbumRole()
{
AlbumId = album.Id,
UserId = user.Id,
};
user.AlbumRoles.Add(albumRole);
db.SaveChanges();
return($"Album {album.Name} successfully created!");
}
}