Readded 0 cat to the end of the Newznab list

src/Lidarr.Http/ClientSchema/SchemaBuilder.cs

@@ -209,7 +209,11 @@ namespace Lidarr.Http.ClientSchema
             {
                 return fieldValue =>
                 {
-                    if (fieldValue.GetType() == typeof(JArray))
+                    if (fieldValue == null)
+                    {
+                        return Enumerable.Empty<int>();
+                    }
+                    else if (fieldValue.GetType() == typeof(JArray))
                     {
                         return ((JArray)fieldValue).Select(s => s.Value<int>());
                     }
@@ -223,7 +227,11 @@ namespace Lidarr.Http.ClientSchema
             {
                 return fieldValue =>
                 {
-                    if (fieldValue.GetType() == typeof(JArray))
+                    if (fieldValue == null)
+                    {
+                        return Enumerable.Empty<string>();
+                    }
+                    else if (fieldValue.GetType() == typeof(JArray))
                     {
                         return ((JArray)fieldValue).Select(s => s.Value<string>());
                     }

src/NzbDrone.Core/Indexers/Newznab/NewznabCategoryFieldOptionsConverter.cs

@@ -10,7 +10,10 @@ namespace NzbDrone.Core.Indexers.Newznab
         public static List<FieldSelectOption> GetFieldSelectOptions(List<NewznabCategory> categories)
         {
             // Ignore categories not relevant for Lidarr
-            var ignoreCategories = new[] { 0, 1000, 2000, 4000, 5000, 6000, 7000 };
+            var ignoreCategories = new[] { 1000, 2000, 4000, 5000, 6000, 7000 };
+
+            // And maybe relevant for specific users
+            var unimportantCategories = new[] { 0 };
 
             var result = new List<FieldSelectOption>();
 
@@ -32,13 +35,8 @@ namespace NzbDrone.Core.Indexers.Newznab
                 });
             }
 
-            foreach (var category in categories)
+            foreach (var category in categories.Where(cat => !ignoreCategories.Contains(cat.Id)).OrderBy(cat => unimportantCategories.Contains(cat.Id)).ThenBy(cat => cat.Id))
             {
-                if (ignoreCategories.Contains(category.Id))
-                {
-                    continue;
-                }
-
                 result.Add(new FieldSelectOption
                 {
                     Value = category.Id,
@@ -48,7 +46,7 @@ namespace NzbDrone.Core.Indexers.Newznab
 
                 if (category.Subcategories != null)
                 {
-                    foreach (var subcat in category.Subcategories)
+                    foreach (var subcat in category.Subcategories.OrderBy(cat => cat.Id))
                     {
                         result.Add(new FieldSelectOption
                         {
@@ -61,8 +59,6 @@ namespace NzbDrone.Core.Indexers.Newznab
                 }
             }
 
-            result.Sort((l, r) => l.Value.CompareTo(r.Value));
-
             return result;
         }
     }

src/NzbDrone.Integration.Test/ApiTests/IndexerFixture.cs

@@ -1,5 +1,8 @@
-using System.Linq;
+using System.Linq;
 using FluentAssertions;
+using Lidarr.Api.V1.Indexers;
+using Lidarr.Http.ClientSchema;
+using Newtonsoft.Json.Linq;
 using NUnit.Framework;
 using NzbDrone.Core.ThingiProvider;
 
@@ -18,5 +21,172 @@ namespace NzbDrone.Integration.Test.ApiTests
             indexers.Should().NotContain(c => string.IsNullOrWhiteSpace(c.Name));
             indexers.Where(c => c.ConfigContract == typeof(NullConfig).Name).Should().OnlyContain(c => c.EnableRss);
         }
+
+        private IndexerResource GetNewznabSchemav1(string name = null)
+        {
+            var schema = Indexers.Schema().First(v => v.Implementation == "Newznab");
+
+            schema.Name = name;
+            schema.EnableRss = false;
+            schema.EnableAutomaticSearch = false;
+            schema.EnableInteractiveSearch = false;
+
+            return schema;
+        }
+
+        private Field GetCategoriesField(IndexerResource resource)
+        {
+            var field = resource.Fields.First(v => v.Name == "categories");
+
+            return field;
+        }
+
+        [Test]
+        public void v2_categories_should_be_array()
+        {
+            var schema = GetNewznabSchemav1();
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value.Should().BeOfType<JArray>();
+        }
+
+        [Test]
+        public void v3_categories_should_be_array()
+        {
+            var schema = GetNewznabSchemav1();
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value.Should().BeOfType<JArray>();
+        }
+
+        [Test]
+        public void v2_categories_should_accept_null()
+        {
+            var schema = GetNewznabSchemav1("Testv2null");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = null;
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().Should().BeEmpty();
+        }
+
+        [Test]
+        public void v2_categories_should_accept_emptystring()
+        {
+            var schema = GetNewznabSchemav1("Testv2emptystring");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = "";
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().Should().BeEmpty();
+        }
+
+        [Test]
+        public void v2_categories_should_accept_string()
+        {
+            var schema = GetNewznabSchemav1("Testv2string");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = "1000,1010";
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().ToObject<int[]>().Should().BeEquivalentTo(new[] { 1000, 1010 });
+        }
+
+        [Test]
+        public void v2_categories_should_accept_array()
+        {
+            var schema = GetNewznabSchemav1("Testv2array");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = new object[] { 1000, 1010 };
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().ToObject<int[]>().Should().BeEquivalentTo(new[] { 1000, 1010 });
+        }
+
+        [Test]
+        public void v3_categories_should_accept_null()
+        {
+            var schema = GetNewznabSchemav1("Testv3null");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = null;
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().Should().BeEmpty();
+        }
+
+        [Test]
+        public void v3_categories_should_accept_emptystring()
+        {
+            var schema = GetNewznabSchemav1("Testv3emptystring");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = "";
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().Should().BeEmpty();
+        }
+
+        [Test]
+        public void v3_categories_should_accept_string()
+        {
+            var schema = GetNewznabSchemav1("Testv3string");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = "1000,1010";
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().ToObject<int[]>().Should().BeEquivalentTo(new[] { 1000, 1010 });
+        }
+
+        [Test]
+        public void v3_categories_should_accept_array()
+        {
+            var schema = GetNewznabSchemav1("Testv3array");
+
+            var categoriesField = GetCategoriesField(schema);
+
+            categoriesField.Value = new object[] { 1000, 1010 };
+
+            var result = Indexers.Post(schema);
+
+            var resultArray = GetCategoriesField(result).Value;
+            resultArray.Should().BeOfType<JArray>();
+            resultArray.As<JArray>().ToObject<int[]>().Should().BeEquivalentTo(new[] { 1000, 1010 });
+        }
     }
 }

src/NzbDrone.Integration.Test/Client/IndexerClient.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using Lidarr.Api.V1.Indexers;
 using RestSharp;
 
@@ -9,5 +10,11 @@ namespace NzbDrone.Integration.Test.Client
             : base(restClient, apiKey)
         {
         }
+
+        public List<IndexerResource> Schema()
+        {
+            var request = BuildRequest("/schema");
+            return Get<List<IndexerResource>>(request);
+        }
     }
 }