refactor: Move the CRDT extract utility to a dedicated file

lib/drift_offline_first.dart

@@ -4,6 +4,7 @@
 library;
 
 export 'src/crdt.dart';
+export 'src/crdt/extensions/extract.dart';
 export 'src/crdt_base.dart';
 export 'src/database.dart';
 export 'src/hlc/converter.dart';

lib/src/crdt/extensions/extract.dart

@@ -0,0 +1,49 @@
+import 'package:drift/drift.dart';
+
+import '../../database.dart';
+
+/// Extensions for [CrdtDatabase] to extract data from the CRDT data table.
+extension CrdtDatabaseExtractExtensions on CrdtDatabase {
+  /// Gets a single data entry from the CRDT data table.
+  Future<T?> getSingleFromCrdtData<T extends Insertable>({
+    required String tableName,
+    required String rowId,
+  }) async {
+    final data = await getFromCrdtData<T>(tableName: tableName, rowIds: [rowId]);
+    return data.firstOrNull;
+  }
+
+  /// Gets a list of data entries from the CRDT data table.
+  Future<List<T>> getFromCrdtData<T extends Insertable>({
+    required String tableName,
+    required Iterable<String> rowIds,
+  }) async {
+    final tableInfo = synchronizedTables.firstWhere(
+      (t) => t.actualTableName == tableName,
+      orElse: () => throw ArgumentError(
+        'Table $tableName not found in synchronized tables.',
+      ),
+    );
+
+    final crdtDataEntries = await managers.crdtDataTable
+        .filter((o) => o.tblName.equals(tableName) & o.rowId.isIn(rowIds))
+        .get();
+
+    return crdtDataEntries.convert<T>(tableInfo);
+  }
+}
+
+extension on List<CrdtDataEntry> {
+  Future<List<T>> convert<T extends Insertable>(TableInfo tableInfo) async {
+    final foundRowIds = map((e) => e.rowId).toSet();
+    return [
+      for (final rowId in foundRowIds)
+        await tableInfo.map({
+          for (final c in tableInfo.$columns)
+            c.$name: firstWhere((e) => e.rowId == rowId && e.columnName == c.$name)
+                .rawValue
+                ?.rawSqlValue,
+        }) as T,
+    ];
+  }
+}

lib/src/database.dart

@@ -32,49 +32,3 @@ class CrdtDatabase extends _$CrdtDatabase {
   @override
   int schemaVersion = 1;
 }
-
-/// Extensions for [CrdtDatabase] to extract data from the CRDT data table.
-extension CrdtDatabaseDataEntryExtensions on CrdtDatabase {
-  /// Gets a single data entry from the CRDT data table.
-  Future<T?> getSingleFromCrdtData<T extends DataClass>({
-    required String tableName,
-    required String rowId,
-  }) async {
-    final data = await getFromCrdtData<T>(tableName: tableName, rowIds: [rowId]);
-    return data.firstOrNull;
-  }
-
-  /// Gets a list of data entries from the CRDT data table.
-  Future<List<T>> getFromCrdtData<T extends DataClass>({
-    required String tableName,
-    required List<String> rowIds,
-  }) async {
-    final tableInfo = synchronizedTables.firstWhere(
-      (t) => t.actualTableName == tableName,
-      orElse: () => throw ArgumentError(
-        'Table $tableName not found in synchronized tables.',
-      ),
-    );
-
-    final crdtDataEntries = await managers.crdtDataTable
-        .filter((o) => o.tblName.equals(tableName) & o.rowId.isIn(rowIds))
-        .get();
-
-    return crdtDataEntries.convert<T>(tableInfo);
-  }
-}
-
-extension on List<CrdtDataEntry> {
-  Future<List<T>> convert<T extends DataClass>(TableInfo tableInfo) async {
-    final foundRowIds = map((e) => e.rowId).toSet();
-    return [
-      for (final rowId in foundRowIds)
-        await tableInfo.map({
-          for (final c in tableInfo.$columns)
-            c.$name: firstWhere((e) => e.rowId == rowId && e.columnName == c.$name)
-                .rawValue
-                ?.rawSqlValue,
-        }) as T,
-    ];
-  }
-}