optimize database calls related to search index (#2645)

2025-11-13 13:27:37 -06:00
parent b6d509b9cd
commit d88e721d2f
32 changed files with 837 additions and 729 deletions
@@ -0,0 +1,59 @@
+using System.Reflection;
+using ErsatzTV.Core.Interfaces.Metadata;
+
+namespace ErsatzTV.Infrastructure.Metadata;
+
+public class LanguageCodeCache : ILanguageCodeCache
+{
+    public IReadOnlyDictionary<string, string[]> CodeToGroupLookup { get; private set; }
+
+    public IReadOnlyList<string[]> AllGroups { get; private set; }
+
+    public async Task Load(CancellationToken cancellationToken)
+    {
+        var lookup = new Dictionary<string, string[]>();
+        var allGroups = new List<string[]>();
+
+        var assembly = Assembly.GetEntryAssembly();
+        if (assembly != null)
+        {
+            await using Stream resource = assembly.GetManifestResourceStream("ErsatzTV.Resources.ISO-639-2_utf-8.txt");
+            if (resource != null)
+            {
+                using var reader = new StreamReader(resource);
+                while (!reader.EndOfStream)
+                {
+                    string line = await reader.ReadLineAsync(cancellationToken);
+                    if (string.IsNullOrWhiteSpace(line))
+                    {
+                        continue;
+                    }
+
+                    string[] split = line.Split("|");
+                    if (split.Length != 5)
+                    {
+                        continue;
+                    }
+
+                    string[] group = new[] { split[0], split[1] }
+                        .Where(c => !string.IsNullOrWhiteSpace(c))
+                        .Distinct()
+                        .ToArray();
+
+                    if (group.Length > 0)
+                    {
+                        allGroups.Add(group);
+
+                        foreach (string code in group)
+                        {
+                            lookup[code] = group;
+                        }
+                    }
+                }
+            }
+        }
+
+        CodeToGroupLookup = lookup;
+        AllGroups = allGroups;
+    }
+}