Codegen: Handel advanced_fields in Service metadata (#1132)

* Codegen: Handel advanced_fields in Servcie  metadata

* use unix path separator

Author: FrankBakkerNl

src/HassModel/NetDaemon.HassModel.CodeGenerator/MetaData/ServicesMetaData/ServiceMetaDataParser.cs

@@ -59,16 +59,9 @@ private static IReadOnlyCollection<HassService> GetServices(JsonElement domainEl
             var result = serviceElement.Deserialize<HassService>(SerializerOptions)! with
             {
                 Service = serviceName,
+                Fields = GetFields(serviceElement)
             };
 
-            if (serviceElement.TryGetProperty("fields", out var fieldProperty))
-            {
-                result = result with
-                {
-                    Fields = fieldProperty.EnumerateObject().Select(p => GetField(p.Name, p.Value)).ToList()
-                };
-            }
-
             return result;
         }
         catch (Exception ex)
@@ -78,6 +71,14 @@ private static IReadOnlyCollection<HassService> GetServices(JsonElement domainEl
         }
     }
 
+    private static List<HassServiceField> GetFields(JsonElement element)
+    {
+        if (!element.TryGetProperty("fields", out var fieldProperty)) return [];
+
+        // advanced_fields can have nested fields inside, we flatten them to a single list of fields
+        return fieldProperty.EnumerateObject().SelectMany(p => p.Name == "advanced_fields" ? GetFields(p.Value)  : [GetField(p.Name, p.Value)]).ToList();
+    }
+
     private static HassServiceField GetField(string fieldName, JsonElement element)
     {
         return element.Deserialize<HassServiceField>(SerializerOptions)! with

src/HassModel/NetDaemon.HassModel.Tests/CodeGenerator/ServiceMetaDataParserTest.cs

@@ -1,4 +1,5 @@
-using System.Text.Json;
+using System.Runtime.InteropServices.ComTypes;
+using System.Text.Json;
 using NetDaemon.HassModel.CodeGenerator;
 using NetDaemon.HassModel.CodeGenerator.Model;
 
@@ -42,6 +43,38 @@ public void TestSomeBasicServicesCanBeParsed()
       res.First().Services.ElementAt(1).Target!.Entity.SelectMany(e=>e.Domain).Should().BeEmpty();
     }
 
+    [Fact]
+    public void TestServicesWithAdvancedFieldsCanBeParsed()
+    {
+        var sample = File.ReadAllText(@"CodeGenerator/ServiceMetaDataSamples/Lights.json");
+
+        var res = Parse(sample);
+        res.Should().HaveCount(1);
+        var lightsDomain = res.First();
+
+        lightsDomain.Domain.Should().Be("light");
+        lightsDomain.Services.Select(s => s.Service).Should().BeEquivalentTo("turn_on", "turn_off", "toggle");
+        var turnOnService = lightsDomain.Services.First();
+        turnOnService.Fields!.Select(f => f.Field).Should().BeEquivalentTo(
+            "transition",
+            "rgb_color",
+            "kelvin",
+            "brightness_pct",
+            "brightness_step_pct",
+            "effect",
+            "rgbw_color",
+            "rgbww_color",
+            "color_name",
+            "hs_color",
+            "xy_color",
+            "color_temp",
+            "brightness",
+            "brightness_step",
+            "white",
+            "profile",
+            "flash");
+    }
+
     [Fact]
     public void TestServicesWithReturnValueCanBeParsed()
     {