add content blocker (#5)

* refactored code added deluge support added transmission support added content blocker added blacklist and whitelist * increased level on some logs; updated test docker compose; updated dev appsettings * updated docker compose and readme * moved some logs * fixed env var typo; fixed sonarr and radarr default download client
2024-11-18 20:08:01 +02:00
parent b323cb40ae
commit e0a6c7842b
154 changed files with 4752 additions and 789 deletions
@@ -0,0 +1,81 @@
+using Domain.Enums;
+using Microsoft.Extensions.Logging;
+
+namespace Infrastructure.Verticals.ContentBlocker;
+
+public sealed class FilenameEvaluator
+{
+    private readonly ILogger<FilenameEvaluator> _logger;
+    private readonly BlocklistProvider _blocklistProvider;
+    
+    public FilenameEvaluator(ILogger<FilenameEvaluator> logger, BlocklistProvider blocklistProvider)
+    {
+        _logger = logger;
+        _blocklistProvider = blocklistProvider;
+    }
+    
+    // TODO create unit tests
+    public bool IsValid(string filename)
+    {
+        return IsValidAgainstPatterns(filename) && IsValidAgainstRegexes(filename);
+    }
+
+    private bool IsValidAgainstPatterns(string filename)
+    {
+        if (_blocklistProvider.Patterns.Count is 0)
+        {
+            return true;
+        }
+
+        return _blocklistProvider.BlocklistType switch
+        {
+            BlocklistType.Blacklist => !_blocklistProvider.Patterns.Any(pattern => MatchesPattern(filename, pattern)),
+            BlocklistType.Whitelist => _blocklistProvider.Patterns.Any(pattern => MatchesPattern(filename, pattern)),
+            _ => true
+        };
+    }
+
+    private bool IsValidAgainstRegexes(string filename)
+    {
+        if (_blocklistProvider.Regexes.Count is 0)
+        {
+            return true;
+        }
+        
+        return _blocklistProvider.BlocklistType switch
+        {
+            BlocklistType.Blacklist => !_blocklistProvider.Regexes.Any(regex => regex.IsMatch(filename)),
+            BlocklistType.Whitelist => _blocklistProvider.Regexes.Any(regex => regex.IsMatch(filename)),
+            _ => true
+        };
+    }
+    
+    private static bool MatchesPattern(string filename, string pattern)
+    {
+        bool hasStartWildcard = pattern.StartsWith('*');
+        bool hasEndWildcard = pattern.EndsWith('*');
+
+        if (hasStartWildcard && hasEndWildcard)
+        {
+            return filename.Contains(
+                pattern.Substring(1, pattern.Length - 2),
+                StringComparison.InvariantCultureIgnoreCase
+            );
+        }
+
+        if (hasStartWildcard)
+        {
+            return filename.EndsWith(pattern.Substring(1), StringComparison.InvariantCultureIgnoreCase);
+        }
+
+        if (hasEndWildcard)
+        {
+            return filename.StartsWith(
+                pattern.Substring(0, pattern.Length - 1),
+                StringComparison.InvariantCultureIgnoreCase
+            );
+        }
+
+        return filename == pattern;
+    }
+}