public static void Main(string[] args)
{
Console.Write("Enter URL or filename of mixtape: ");
string providedMixtape = Console.ReadLine();
Console.Write("Enter URL or filename of change list: ");
string changeList = Console.ReadLine();
if (string.IsNullOrWhiteSpace(providedMixtape))
{
providedMixtape = "https://gist.githubusercontent.com/jmodjeska/0679cf6cd670f76f07f1874ce00daaeb/raw/a4ac53fa86452ac26d706df2e851fb7d02697b4b/mixtape-data.json";
}
try
{
Mixtape mixtape = Mixtape.Read(providedMixtape);
Mixtape mixtapeWithChages = Mixtape.ReadAndApplyChanges(mixtape, changeList);
SerializeJsonToFile(mixtapeWithChages);
Console.WriteLine(File.ReadAllText("Output.json"));
Console.WriteLine("Press any key to close");
Console.ReadKey(false);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
public static Mixtape RemovePlaylist(Mixtape mixtape, Playlist playlist)
{
if (mixtape.playlists.Any(p => p.id == playlist.id))
{
mixtape.playlists.Remove(mixtape.playlists.Where(p => p.id == playlist.id).First());
}
return(mixtape);
}
public static Mixtape RemoveSong(Mixtape mixtape, Song song)
{
if (mixtape.songs.Any(s => s.id == song.id))
{
mixtape.songs.Remove(mixtape.songs.Where(s => s.id == song.id).First());
}
return(mixtape);
}
public static Mixtape UpdateSong(Mixtape mixtape, Song song)
{
Song songToUpdate = mixtape.songs.Where(s => s.id == song.id).FirstOrDefault();
songToUpdate.artist = song.artist;
songToUpdate.title = song.title;
return(mixtape);
}
public static Mixtape UpdatePlaylist(Mixtape mixtape, Playlist playlist)
{
Playlist playlistToUpdate = mixtape.playlists.Where(p => p.id == playlist.id).FirstOrDefault();
playlistToUpdate.user_id = playlist.user_id;
playlistToUpdate.song_ids = playlist.song_ids;
return(mixtape);
}
public static Mixtape RemoveUser(Mixtape mixtape, User user)
{
if (mixtape.users.Any(u => u.id == user.id))
{
mixtape.users.Remove(mixtape.users.Where(u => u.id == user.id).First());
}
return(mixtape);
}
public static Mixtape UpdateUser(Mixtape mixtape, User user)
{
//if the user is in valid, the user doesnt get updated. This is something I would log but not necessarily warn the user about?
User userToUpdate = mixtape.users.Where(u => u.id == user.id).FirstOrDefault();
userToUpdate.name = user.name;
return(mixtape);
}
public static void SerializeJsonToFile(Mixtape objectToJson)
{
//It may not always be a good idea to pretty print here. Adds more bytes to deal with but I think it's a good idea for this project specifically
var options = new JsonSerializerOptions
{
WriteIndented = true,
};
var jsonString = JsonSerializer.Serialize(objectToJson, options);
File.WriteAllText("Output.json", jsonString);
}
public static Mixtape AddSong(Mixtape mixtape, Song song)
{
if (!mixtape.songs.Any(s => s.id == song.id))
{
List <int> findMaxId = new List <int>();
mixtape.users.ForEach(u => findMaxId.Add(Int32.Parse(u.id)));
int maxId = findMaxId.Max();
int newId = maxId++;
song.id = newId.ToString();
mixtape.songs.Add(song);
}
return(mixtape);
}
public static Mixtape AddPlaylist(Mixtape mixtape, Playlist playlist)
{
if (!mixtape.playlists.Any(p => p.id == playlist.id))
{
List <int> findMaxId = new List <int>();
mixtape.users.ForEach(u => findMaxId.Add(Int32.Parse(u.id)));
int maxId = findMaxId.Max();
int newId = maxId++;
playlist.id = newId.ToString();
mixtape.playlists.Add(playlist);
}
return(mixtape);
}
public static Mixtape AddUser(Mixtape mixtape, User user)
{
if (!mixtape.users.Any(u => u.name == user.name))
{
//I want the Ids to remain unique, similar to db ids.
List <int> findMaxId = new List <int>();
mixtape.users.ForEach(u => findMaxId.Add(Int32.Parse(u.id)));
int maxId = findMaxId.Max();
int newId = maxId++;
user.id = newId.ToString();
mixtape.users.Add(user);
}
return(mixtape);
}
public static Mixtape Read(string url)
{
try
{
using (WebClient wc = new WebClient())
{
string jsonString = wc.DownloadString(url);
Mixtape mixtape = JsonSerializer.Deserialize <Mixtape>(jsonString);
return(mixtape);
};
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
public static Mixtape ReadAndApplyChanges(Mixtape currentMixtape, string changes)
{
Mixtape updatedMixtape = currentMixtape;
ChangeList changeList = ChangeList.ReadChanges(changes);
foreach (Change c in changeList.changes)
{
try
{
if (c.user is not null)
{
switch (c.change_action)
{
case ("update"):
updatedMixtape = UpdateUser(updatedMixtape, c.user);
break;
case ("add"):
updatedMixtape = AddUser(updatedMixtape, c.user);
break;
case ("delete"):
updatedMixtape = RemoveUser(updatedMixtape, c.user);
break;
default:
throw new NotSupportedException($"Unable to recognize {nameof(c.change_action)}: {c.change_action}\r\n"
+ $"Could not make changes to user id: {c.user.id}");
}
}
if (c.playlist is not null)
{
switch (c.change_action)
{
case ("update"):
updatedMixtape = UpdatePlaylist(updatedMixtape, c.playlist);
break;
case ("add"):
updatedMixtape = AddPlaylist(updatedMixtape, c.playlist);
break;
case ("delete"):
updatedMixtape = RemovePlaylist(updatedMixtape, c.playlist);
break;
default:
throw new NotSupportedException($"Unable to recognize {nameof(c.change_action)}: {c.change_action}\r\n"
+ $"Could not make changes to playlist id: {c.playlist.id}");
}
}
if (c.song is not null)
{
switch (c.change_action)
{
case ("update"):
updatedMixtape = UpdateSong(updatedMixtape, c.song);
break;
case ("add"):
updatedMixtape = AddSong(updatedMixtape, c.song);
break;
case ("delete"):
updatedMixtape = RemoveSong(updatedMixtape, c.song);
break;
default:
throw new NotSupportedException($"Unable to recognize {nameof(c.change_action)}: {c.change_action}\r\n"
+ $"Could not make changes to song id: {c.song.id}");
}
}
}
catch (NotSupportedException ex)
{
Console.WriteLine(ex.Message);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
return(updatedMixtape);
}