fix potato API

src/Jackett/Indexers/BaseIndexer.cs

@@ -190,21 +190,23 @@ namespace Jackett.Indexers
             if (query == null)
                 return false;
             var caps = TorznabCaps;
-            if (!caps.SearchAvailable && query.IsSearch)
-                return false;
-            if (!caps.TVSearchAvailable && query.IsTVSearch)
-                return false;
-            if (!caps.MovieSearchAvailable && query.IsMovieSearch)
-                return false;
-            if (!caps.SupportsTVRageSearch && query.IsTVRageSearch)
-                return false;
-            if (!caps.SupportsImdbSearch && query.IsImdbQuery)
-                return false;
 
             if (query.HasSpecifiedCategories)
                 if (!caps.SupportsCategories(query.Categories))
                     return false;
-            return true;
+
+            if (caps.SearchAvailable && query.IsSearch)
+                return true;
+            if (caps.TVSearchAvailable && query.IsTVSearch)
+                return true;
+            if (caps.MovieSearchAvailable && query.IsMovieSearch)
+                return true;
+            if (caps.SupportsTVRageSearch && query.IsTVRageSearch)
+                return true;
+            if (caps.SupportsImdbSearch && query.IsImdbQuery)
+                return true;
+
+            return false;
         }
 
         public void Unconfigure()

src/Jackett/Models/DTO/ApiSearch.cs

@@ -11,6 +11,7 @@ namespace Jackett.Models.DTO
         public static TorznabQuery ToTorznabQuery(ApiSearch request)
         {
             var stringQuery = new TorznabQuery();
+            stringQuery.QueryType = "search";
 
             var queryStr = request.Query;
             if (queryStr != null)
@@ -30,7 +31,10 @@ namespace Jackett.Models.DTO
                 }
                 queryStr = queryStr.Trim();
             }
-
+            else
+            {
+                queryStr = ""; // empty string search is interpreted as null 
+            }
 
             stringQuery.SearchTerm = queryStr;
             stringQuery.Categories = request.Category == 0 ? new int[0] : new int[1] { request.Category };

src/Jackett/Models/TorznabQuery.cs

@@ -35,7 +35,7 @@ namespace Jackett.Models
         {
             get
             {
-                return (QueryStringParts != null && QueryStringParts.Length > 0);
+                return QueryType == "search";
             }
         }
 
@@ -51,7 +51,7 @@ namespace Jackett.Models
         {
             get
             {
-                return QueryType == "movie";
+                return QueryType == "movie" || (QueryType == "TorrentPotato" && !string.IsNullOrWhiteSpace(SearchTerm));
             }
         }
 

src/Jackett/Services/IndexerManagerService.cs

@@ -204,6 +204,8 @@ namespace Jackett.Services
         {
             var indexer = GetIndexer(name);
             var browseQuery = new TorznabQuery();
+            browseQuery.QueryType = "search";
+            browseQuery.SearchTerm = "";
             browseQuery.IsTest = true;
             var results = await indexer.ResultsForQuery(browseQuery);
             logger.Info(string.Format("Found {0} releases from {1}", results.Count(), indexer.DisplayName));