New: Custom Format Language Condition

src/NzbDrone.Core/CustomFormats/Specifications/LanguageSpecification.cs

@@ -0,0 +1,45 @@
+using System.Linq;
+using FluentValidation;
+using NzbDrone.Core.Annotations;
+using NzbDrone.Core.Languages;
+using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.Validation;
+
+namespace NzbDrone.Core.CustomFormats
+{
+    public class LanguageSpecificationValidator : AbstractValidator<LanguageSpecification>
+    {
+        public LanguageSpecificationValidator()
+        {
+            RuleFor(c => c.Value).NotEmpty();
+            RuleFor(c => c.Value).Custom((value, context) =>
+            {
+                if (!Language.All.Any(o => o.Id == value))
+                {
+                    context.AddFailure(string.Format("Invalid Language condition value: {0}", value));
+                }
+            });
+        }
+    }
+
+    public class LanguageSpecification : CustomFormatSpecificationBase
+    {
+        private static readonly LanguageSpecificationValidator Validator = new LanguageSpecificationValidator();
+
+        public override int Order => 3;
+        public override string ImplementationName => "Language";
+
+        [FieldDefinition(1, Label = "Language", Type = FieldType.Select, SelectOptions = typeof(LanguageFieldConverter))]
+        public int Value { get; set; }
+
+        protected override bool IsSatisfiedByWithoutNegate(ParsedEpisodeInfo episodeInfo)
+        {
+            return episodeInfo?.Languages?.Contains((Language)Value) ?? false;
+        }
+
+        public override NzbDroneValidationResult Validate()
+        {
+            return new NzbDroneValidationResult(Validator.Validate(this));
+        }
+    }
+}