/// <summary>
/// Imports data from json
/// </summary>
/// <param name="json"></param>
/// <returns></returns>
public static int ImportFromJson(AlbumViewerContext context, string json)
{
var albums = JsonConvert.DeserializeObject <Album[]>(json);
foreach (var album in albums)
{
// clear out primary/identity keys so insert works
album.Id = 0;
album.ArtistId = 0;
album.Artist.Id = 0;
var existingArtist = context.Artists.Where(a => a.ArtistName == album.Artist.ArtistName).FirstOrDefault();
if (existingArtist == null)
{
context.Artists.Add(album.Artist);
}
else
{
album.Artist = existingArtist;
album.ArtistId = existingArtist.Id;
}
if (album.Tracks != null)
{
foreach (var track in album.Tracks)
{
track.Id = 0;
context.Add(track);
}
}
context.Add(album);
try
{
context.SaveChanges();
}
catch
{
Console.WriteLine("Error adding: " + album.ArtistId);
}
}
var user = new User()
{
Username = "******",
Password = "******",
Fullname = "Test User",
};
context.Users.Add(user);
context.SaveChanges();
return(1);
}
public static bool EnsureAlbumData(AlbumViewerContext context, string jsonDataFilePath)
{
bool hasData = false;
try
{
hasData = context.Albums.Any();
}
catch
{
context.Database.EnsureCreated(); // just create the schema as is no migrations
hasData = context.Albums.Any();
}
if (!hasData)
{
string json = System.IO.File.ReadAllText(jsonDataFilePath);
return(ImportFromJson(context, json) > 0);
}
return(true);
}
