use javascript instead of lua for external scripts; add audio stream selector scripts (#1005)

* use js instead of lua * update dependencies * add audio stream selector script for episodes * add audio stream selector script for movies * update changelog
2022-10-28 17:05:07 -05:00
parent 93bf818882
commit c9bd94d9f8
33 changed files with 535 additions and 96 deletions
@@ -0,0 +1,45 @@
+using ErsatzTV.Core.Interfaces.Scripting;
+using Jint;
+using Microsoft.Extensions.Logging;
+
+namespace ErsatzTV.Infrastructure.Scripting;
+
+public class ScriptEngine : IScriptEngine
+{
+    private Engine _engine;
+
+    public ScriptEngine(ILogger<ScriptEngine> logger)
+    {
+        _engine = new Engine(
+                options =>
+                {
+                    options.AllowClr();
+                    options.LimitMemory(4_000_000);
+                    options.TimeoutInterval(TimeSpan.FromSeconds(4));
+                    options.MaxStatements(1000);
+                })
+            .SetValue("log", new Action<string>(s => logger.LogDebug("JS Script: {Message}", s)));
+    }
+
+    public void Load(string jsScriptPath)
+    {
+        string contents = File.ReadAllText(jsScriptPath);
+        _engine.Execute(contents);
+    }
+
+    public async Task LoadAsync(string jsScriptPath)
+    {
+        string contents = await File.ReadAllTextAsync(jsScriptPath);
+        _engine.Execute(contents);
+    }
+    
+    public object GetValue(string propertyName) => _engine.GetValue(propertyName).ToObject();
+
+    public object Invoke(string functionName, params object[] args) => _engine.Invoke(functionName, args).ToObject();
+
+    public void Dispose()
+    {
+        _engine?.Dispose();
+        _engine = null;
+    }
+}