core: allow to rename indexer id (part 3 #8355) (#8612)

src/Jackett.Common/Definitions/vhstapes.yml

@@ -1,5 +1,5 @@
 ---
-id: nostalgic
+id: vhstapes
 name: VHSTAPES
 description: "VHSTAPES (The Archive / Nostalgic) is a Private Torrent Tracker for MOVIES / TV / GENERAL NOSTALGIA"
 language: en-us

src/Jackett.Common/Services/IndexerConfigurationService.cs

@@ -33,7 +33,7 @@ namespace Jackett.Common.Services
 
         public void Delete(IIndexer indexer)
         {
-            var configFilePath = GetIndexerConfigFilePath(indexer);
+            var configFilePath = GetIndexerConfigFilePath(indexer.Id);
             File.Delete(configFilePath);
             var configFilePathBak = configFilePath + ".bak";
             if (File.Exists(configFilePathBak))
@@ -42,20 +42,20 @@ namespace Jackett.Common.Services
             }
         }
 
-        public void Load(IIndexer idx)
+        public void Load(IIndexer indexer)
         {
-            var configFilePath = GetIndexerConfigFilePath(idx);
+            var configFilePath = GetIndexerConfigFilePath(indexer.Id);
             if (File.Exists(configFilePath))
             {
                 try
                 {
                     var fileStr = File.ReadAllText(configFilePath);
                     var jsonString = JToken.Parse(fileStr);
-                    idx.LoadFromSavedConfiguration(jsonString);
+                    indexer.LoadFromSavedConfiguration(jsonString);
                 }
                 catch (Exception ex)
                 {
-                    logger.Error(ex, "Failed loading configuration for {0}, trying backup", idx.DisplayName);
+                    logger.Error(ex, "Failed loading configuration for {0}, trying backup", indexer.DisplayName);
                     var configFilePathBak = configFilePath + ".bak";
                     if (File.Exists(configFilePathBak))
                     {
@@ -63,18 +63,18 @@ namespace Jackett.Common.Services
                         {
                             var fileStrBak = File.ReadAllText(configFilePathBak);
                             var jsonStringBak = JToken.Parse(fileStrBak);
-                            idx.LoadFromSavedConfiguration(jsonStringBak);
-                            logger.Info("Successfully loaded backup config for {0}", idx.DisplayName);
-                            idx.SaveConfig();
+                            indexer.LoadFromSavedConfiguration(jsonStringBak);
+                            logger.Info("Successfully loaded backup config for {0}", indexer.DisplayName);
+                            indexer.SaveConfig();
                         }
                         catch (Exception exbak)
                         {
-                            logger.Error(exbak, "Failed loading backup configuration for {0}, you must reconfigure this indexer", idx.DisplayName);
+                            logger.Error(exbak, "Failed loading backup configuration for {0}, you must reconfigure this indexer", indexer.DisplayName);
                         }
                     }
                     else
                     {
-                        logger.Error(ex, "Failed loading backup configuration for {0} (no backup available), you must reconfigure this indexer", idx.DisplayName);
+                        logger.Error(ex, "Failed loading backup configuration for {0} (no backup available), you must reconfigure this indexer", indexer.DisplayName);
                     }
                 }
             }
@@ -85,7 +85,7 @@ namespace Jackett.Common.Services
             lock (configWriteLock)
             {
                 var uID = Guid.NewGuid().ToString("N");
-                var configFilePath = GetIndexerConfigFilePath(indexer);
+                var configFilePath = GetIndexerConfigFilePath(indexer.Id);
                 var configFilePathBak = configFilePath + ".bak";
                 var configFilePathTmp = configFilePath + "." + uID + ".tmp";
                 var content = obj.ToString();
@@ -141,7 +141,8 @@ namespace Jackett.Common.Services
             }
         }
 
-        private string GetIndexerConfigFilePath(IIndexer indexer) => Path.Combine(configService.GetIndexerConfigDir(), indexer.Id + ".json");
+        public string GetIndexerConfigFilePath(string indexerId)
+            => Path.Combine(configService.GetIndexerConfigDir(), indexerId + ".json");
 
         private readonly IConfigurationService configService;
         private readonly Logger logger;

src/Jackett.Common/Services/IndexerManagerService.cs

@@ -30,6 +30,15 @@ namespace Jackett.Common.Services
         private readonly Dictionary<string, IIndexer> indexers = new Dictionary<string, IIndexer>();
         private AggregateIndexer aggregateIndexer;
 
+        // this map is used to maintain backward compatibility when renaming the id of an indexer
+        // (the id is used in the torznab/download/search urls and in the indexer configuration file)
+        // if the indexer is removed, remove it from this list too
+        // use: {"<old id>", "<new id>"}
+        private readonly Dictionary<string, string> renamedIndexers = new Dictionary<string, string>
+        {
+            {"nostalgic", "vhstapes"}
+        };
+
         public IndexerManagerService(IIndexerConfigurationService config, IProtectionService protectionService, WebClient webClient, Logger l, ICacheService cache, IProcessService processService, IConfigurationService globalConfigService, ServerConfig serverConfig)
         {
             configService = config;
@@ -44,11 +53,29 @@ namespace Jackett.Common.Services
 
         public void InitIndexers(IEnumerable<string> path)
         {
+            MigrateRenamedIndexers();
             InitIndexers();
             InitCardigannIndexers(path);
             InitAggregateIndexer();
         }
 
+        private void MigrateRenamedIndexers()
+        {
+            foreach (var oldId in renamedIndexers.Keys)
+            {
+                var oldPath = configService.GetIndexerConfigFilePath(oldId);
+                if (File.Exists(oldPath))
+                {
+                    // if the old configuration exists, we rename it to be used by the renamed indexer
+                    var newPath = configService.GetIndexerConfigFilePath(renamedIndexers[oldId]);
+                    File.Move(oldPath, newPath);
+                    if (File.Exists(oldPath + ".bak"))
+                        File.Move(oldPath + ".bak", newPath + ".bak");
+                    logger.Info($"Configuration renamed: {oldPath} => {newPath}");
+                }
+            }
+        }
+
         private void InitIndexers()
         {
             logger.Info("Using HTTP Client: " + webClient.GetType().Name);
@@ -179,19 +206,24 @@ namespace Jackett.Common.Services
 
         public IIndexer GetIndexer(string name)
         {
-            if (indexers.ContainsKey(name))
+            // old id of renamed indexer is used to maintain backward compatibility
+            // both, the old id and the new one can be used until we remove it from renamedIndexers
+            var realName = name;
+            if (renamedIndexers.ContainsKey(name))
             {
-                return indexers[name];
+                realName = renamedIndexers[name];
+                logger.Warn($"Indexer {name} has been renamed to {realName}. Please, update the URL of the feeds. " +
+                            "This may stop working in the future.");
             }
-            else if (name == "all")
-            {
+
+            if (indexers.ContainsKey(realName))
+                return indexers[realName];
+
+            if (realName == "all")
                 return aggregateIndexer;
-            }
-            else
-            {
-                logger.Error("Request for unknown indexer: " + name);
-                throw new Exception("Unknown indexer: " + name);
-            }
+
+            logger.Error("Request for unknown indexer: " + realName);
+            throw new Exception("Unknown indexer: " + realName);
         }
 
         public IWebIndexer GetWebIndexer(string name)

src/Jackett.Common/Services/Interfaces/IIndexerConfigurationService.cs

@@ -8,5 +8,6 @@ namespace Jackett.Common.Services.Interfaces
         void Load(IIndexer indexer);
         void Save(IIndexer indexer, JToken config);
         void Delete(IIndexer indexer);
+        string GetIndexerConfigFilePath(string indexerId);
     }
 }

src/Jackett.Updater/Program.cs

@@ -337,6 +337,7 @@ namespace Jackett.Updater
                 "Definitions/music-master.yml",
                 "Definitions/nachtwerk.yml",
                 "Definitions/nexttorrent.yml",
+                "Definitions/nostalgic.yml",
                 "Definitions/nyaa.yml",
                 "Definitions/nyoo.yml",
                 "Definitions/passionetorrent.yml",