From 1fc79f9e9b9617e513a841413dd6de383bdc7a09 Mon Sep 17 00:00:00 2001
From: Qstick <qstick@gmail.com>
Date: Sun, 23 Apr 2023 18:11:43 -0500
Subject: [PATCH] New: Use languages from Torznab/Newznab attributes if given

(cherry picked from commit 9c5a07f62a6e32832c10c80813cd3b98c5859989)
---
 .../Headphones/HeadphonesRssParser.cs         | 22 +++++++++++++++++++
 .../Definitions/Newznab/NewznabRssParser.cs   | 22 +++++++++++++++++++
 .../Definitions/Torznab/TorznabRssParser.cs   | 22 +++++++++++++++++++
 src/NzbDrone.Core/Indexers/RssParser.cs       |  6 +++++
 4 files changed, 72 insertions(+)

diff --git a/src/NzbDrone.Core/Indexers/Definitions/Headphones/HeadphonesRssParser.cs b/src/NzbDrone.Core/Indexers/Definitions/Headphones/HeadphonesRssParser.cs
index 7768751c4..9aac83bed 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Headphones/HeadphonesRssParser.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Headphones/HeadphonesRssParser.cs
@@ -126,6 +126,28 @@ namespace NzbDrone.Core.Indexers.Headphones
             return results;
         }
 
+        protected override List<string> GetLanguages(XElement item)
+        {
+            var languges = TryGetMultipleNewznabAttributes(item, "language");
+            var results = new List<string>();
+
+            // Try to find <language> elements for some indexers that suck at following the rules.
+            if (languges.Count == 0)
+            {
+                languges = item.Elements("language").Select(e => e.Value).ToList();
+            }
+
+            foreach (var language in languges)
+            {
+                if (language.IsNotNullOrWhiteSpace())
+                {
+                    results.Add(language);
+                }
+            }
+
+            return results;
+        }
+
         protected override long GetSize(XElement item)
         {
             long size;
diff --git a/src/NzbDrone.Core/Indexers/Definitions/Newznab/NewznabRssParser.cs b/src/NzbDrone.Core/Indexers/Definitions/Newznab/NewznabRssParser.cs
index 1f4388b87..85783338b 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Newznab/NewznabRssParser.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Newznab/NewznabRssParser.cs
@@ -154,6 +154,28 @@ namespace NzbDrone.Core.Indexers.Newznab
             return results;
         }
 
+        protected override List<string> GetLanguages(XElement item)
+        {
+            var languges = TryGetMultipleNewznabAttributes(item, "language");
+            var results = new List<string>();
+
+            // Try to find <language> elements for some indexers that suck at following the rules.
+            if (languges.Count == 0)
+            {
+                languges = item.Elements("language").Select(e => e.Value).ToList();
+            }
+
+            foreach (var language in languges)
+            {
+                if (language.IsNotNullOrWhiteSpace())
+                {
+                    results.Add(language);
+                }
+            }
+
+            return results;
+        }
+
         protected override long GetSize(XElement item)
         {
             long size;
diff --git a/src/NzbDrone.Core/Indexers/Definitions/Torznab/TorznabRssParser.cs b/src/NzbDrone.Core/Indexers/Definitions/Torznab/TorznabRssParser.cs
index 953ec9f21..4630916bf 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Torznab/TorznabRssParser.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Torznab/TorznabRssParser.cs
@@ -125,6 +125,28 @@ namespace NzbDrone.Core.Indexers.Torznab
             return ParseUrl(item.TryGetValue("comments"));
         }
 
+        protected override List<string> GetLanguages(XElement item)
+        {
+            var languges = TryGetMultipleTorznabAttributes(item, "language");
+            var results = new List<string>();
+
+            // Try to find <language> elements for some indexers that suck at following the rules.
+            if (languges.Count == 0)
+            {
+                languges = item.Elements("language").Select(e => e.Value).ToList();
+            }
+
+            foreach (var language in languges)
+            {
+                if (language.IsNotNullOrWhiteSpace())
+                {
+                    results.Add(language);
+                }
+            }
+
+            return results;
+        }
+
         protected override long GetSize(XElement item)
         {
             long size;
diff --git a/src/NzbDrone.Core/Indexers/RssParser.cs b/src/NzbDrone.Core/Indexers/RssParser.cs
index b24a92020..6994bb626 100644
--- a/src/NzbDrone.Core/Indexers/RssParser.cs
+++ b/src/NzbDrone.Core/Indexers/RssParser.cs
@@ -166,6 +166,7 @@ namespace NzbDrone.Core.Indexers
             releaseInfo.InfoUrl = GetInfoUrl(item);
             releaseInfo.CommentUrl = GetCommentUrl(item);
             releaseInfo.Categories = GetCategory(item);
+            releaseInfo.Languages = GetLanguages(item);
 
             try
             {
@@ -237,6 +238,11 @@ namespace NzbDrone.Core.Indexers
             return ParseUrl((string)item.Element("comments"));
         }
 
+        protected virtual List<string> GetLanguages(XElement item)
+        {
+            return new List<string>();
+        }
+
         protected virtual long GetSize(XElement item)
         {
             if (UseEnclosureLength)