feat: add logging definitions.

Jellyfin.Plugin.SmartPlaylist/ScheduledTasks/GeneratePlaylist.cs

@@ -98,6 +98,24 @@ namespace Jellyfin.Plugin.SmartPlaylist.ScheduledTasks {
             List<BaseItem> results = new List<BaseItem>();
             Expression expression = new Parser(StringTokenStream.generate(smartPlaylist.Program)).parse(); // parse here, so that we don't repeat the work for each item
             Executor executor = new Executor(new DefaultEnvironment());
+
+            executor.builtins["logd"] = (x) => {
+                _logger.LogDebug(((Lisp.String)x.First()).Value(), x.Skip(1).ToArray());
+                return Lisp_Boolean.TRUE;
+            };
+            executor.builtins["logi"] = (x) => {
+                _logger.LogInformation(((Lisp.String)x.First()).Value(), x.Skip(1).ToArray());
+                return Lisp_Boolean.TRUE;
+            };
+            executor.builtins["logw"] = (x) => {
+                _logger.LogWarning(((Lisp.String)x.First()).Value(), x.Skip(1).ToArray());
+                return Lisp_Boolean.TRUE;
+            };
+            executor.builtins["loge"] = (x) => {
+                _logger.LogError(((Lisp.String)x.First()).Value(), x.Skip(1).ToArray());
+                return Lisp_Boolean.TRUE;
+            };
+
             executor.environment.Set("user", Lisp_Object.FromBase(user));
             if (Plugin.Instance is not null) {
                 executor.eval(Plugin.Instance.Configuration.InitialProgram);

README.md

@@ -129,6 +129,8 @@ the items by name you could use the following program:
 - **is-type**: matches the type of item look at
   [BaseItemKind.cs](https://github.com/jellyfin/jellyfin/blob/master/Jellyfin.Data/Enums/BaseItemKind.cs)
   for a list of items. The plugin has enabled support for `Audio, MusicAlbum, Playlist` (`(is-type "Audio")`)
+- **log[diwe]**: write to the logger with the respective levels (`debug`, `information`, `warning`, `error`).
+  Takes the same arguments as `Logger.LogInformation(...)`.
 
 ### Filename