added metadata loading to scanner

AZKiServer/Services/MediaService.cs

@@ -1,5 +1,7 @@
 using AZKiServer.Models;
 
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
 using MongoDB.Driver;
 
 using System.Collections.Frozen;
@@ -9,10 +11,15 @@ namespace AZKiServer.Services;
 public class MediaService(IMongoDatabase db)
 {
 	public readonly IMongoCollection<MediaEntry> _entries = db.GetCollection<MediaEntry>("media");
-	public async Task<FrozenSet<string>> GetExistingFilePathsAsync(CancellationToken cancellationToken = default)
+
+	[BsonIgnoreExtraElements]
+	private record MediaInfo(string FilePath, int Version);
+	public async Task<FrozenDictionary<string, int>> GetExistingFilePathsAsync(CancellationToken cancellationToken = default)
 	{
-		var files = await _entries.Find("{}").Project(m => m.Filepath).ToListAsync(cancellationToken);
-		return files.ToFrozenSet();
+		var files = await _entries.Find("{}").As<MediaInfo>().ToListAsync(cancellationToken);
+		if (files.Count == 0)
+			return FrozenDictionary<string, int>.Empty;
+		return files.ToFrozenDictionary(m => m.FilePath, m => m.Version);
 	}
 
 	public async Task AddMediaBulkAsync(List<MediaEntry> entries, CancellationToken cancellationToken = default)
@@ -20,7 +27,7 @@ public class MediaService(IMongoDatabase db)
 		await _entries.InsertManyAsync(entries, cancellationToken: cancellationToken);
 	}
 
-	public async Task<List<MediaEntry>> GetEntriesInRangeAsync(MediaType mediaType, DateTime from, DateTime to)
+	public async Task<List<MediaEntry>> GetEntriesInRangeAsync(MediaType mediaType, DateTime from, DateTime to, CancellationToken cancellationToken = default)
 	{
 		var filter = Builders<MediaEntry>.Filter
 			.And([
@@ -29,11 +36,25 @@ public class MediaService(IMongoDatabase db)
 					Builders<MediaEntry>.Filter.Lte(m => m.Date, to),
 				]);
 
-		return _entries.Find(filter).ToList();
-
-
+		return await _entries.Find(filter).ToListAsync(cancellationToken);
 	}
 
+	public async Task DeleteAllEntriesAsync(IEnumerable<ObjectId> ids, CancellationToken cancellationToken = default)
+	{
+		await _entries.DeleteManyAsync(e => ids.Contains(e.Id), cancellationToken);
+	}
+
+	public async Task DeleteAllEntriesAsync(IEnumerable<string> paths, CancellationToken cancellationToken = default)
+	{
+		await _entries.DeleteManyAsync(e => paths.Contains(e.Filepath), cancellationToken);
+	}
+
+#if DEBUG
+	public async Task DeleteAllEntriesAsync(CancellationToken cancellationToken = default) {
+		await _entries.DeleteManyAsync("{}", cancellationToken);
+	}
+#endif
+
 	public class IndexCreation : BackgroundService
 	{
 		protected override Task ExecuteAsync(CancellationToken stoppingToken)
@@ -41,4 +62,6 @@ public class MediaService(IMongoDatabase db)
 			throw new NotImplementedException();
 		}
 	}
+
+
 }