Added ability to remove all records from the database.

VectorSearchApp/Program.cs

@@ -62,6 +62,7 @@ while (true)
     Console.WriteLine("  2. Search for similar addresses");
     Console.WriteLine("  3. Get all addresses");
     Console.WriteLine("  4. Exit");
+    Console.WriteLine("  5. Delete all records");
     Console.Write("Select an option: ");
 
     var option = Console.ReadLine()?.Trim();
@@ -83,6 +84,9 @@ while (true)
         case "3":
             await GetAllAddressesAsync(qdrantService);
             break;
+        case "5":
+            await DeleteAllAddressesAsync(qdrantService);
+            break;
         default:
             Console.WriteLine("Invalid option. Please try again.");
             break;
@@ -231,4 +235,32 @@ async Task GetAllAddressesAsync(IQdrantService? qdrantService)
     {
         Console.WriteLine($"Error retrieving addresses: {ex.Message}");
     }
+}
+
+async Task DeleteAllAddressesAsync(IQdrantService? qdrantService)
+{
+    if (qdrantService == null)
+    {
+        Console.WriteLine("Deleting all records is not available because Qdrant is not connected.");
+        return;
+    }
+
+    Console.Write("Are you sure you want to delete ALL records? This cannot be undone. (yes/no): ");
+    var confirmation = Console.ReadLine()?.Trim().ToLower();
+
+    if (confirmation != "yes")
+    {
+        Console.WriteLine("Deletion cancelled.");
+        return;
+    }
+
+    try
+    {
+        await qdrantService.DeleteAllAddressesAsync();
+        Console.WriteLine("All records have been deleted successfully.");
+    }
+    catch (Exception ex)
+    {
+        Console.WriteLine($"Error deleting records: {ex.Message}");
+    }
 }

VectorSearchApp/Services/QdrantService.cs

@@ -11,6 +11,7 @@ public interface IQdrantService
     Task StoreAddressAsync(Address address, float[] embedding, CancellationToken cancellationToken = default);
     Task<List<AddressEmbedding>> SearchSimilarAddressesAsync(float[] queryEmbedding, int limit = 5, float scoreThreshold = 0.0f, CancellationToken cancellationToken = default);
     Task<List<AddressEmbedding>> GetAllAddressesAsync(CancellationToken cancellationToken = default);
+    Task DeleteAllAddressesAsync(CancellationToken cancellationToken = default);
 }
 
 public class QdrantService : IQdrantService
@@ -86,4 +87,9 @@ public class QdrantService : IQdrantService
         }
         return addresses;
     }
+
+    public async Task DeleteAllAddressesAsync(CancellationToken cancellationToken = default)
+    {
+        await _client.DeleteAsync(_collectionName, filter: new Filter(), cancellationToken: cancellationToken);
+    }
 }