download some codes

lib/data/db.dart

@@ -2,7 +2,7 @@ import 'package:nostr_sdk/utils/db_util.dart';
 import 'package:sqflite/sqflite.dart';
 
 class DB {
-  static const _VERSION = 2;
+  static const _VERSION = 3;
 
   static const _dbName = "nowser.db";
 
@@ -41,14 +41,22 @@ class DB {
         "create table bookmark(id             integer not null constraint bookmark_pk primary key autoincrement,title          text,url            text    not null,favicon        text,weight         integer,added_to_index integer, added_to_qa integer,created_at     integer);");
     db.execute(
         "create table browser_history(id         integer not null constraint browser_history_pk primary key autoincrement,title      text,url        text    not null,favicon    text,created_at integer);");
+
+    db.execute(
+        "create table download_log(id         integer constraint download_log_pk primary key autoincrement,url        text,file_path  text,file_name  TEXT,file_size  integer,created_at integer);");
   }
 
   static Future<void> _onUpgrade(
       Database db, int oldVersion, int newVersion) async {
-    if (oldVersion == 1 && newVersion == 2) {
+    if (oldVersion == 1) {
       db.execute(
           "alter table bookmark add added_to_qa integer after added_to_index");
     }
+
+    if (oldVersion <= 2) {
+      db.execute(
+          "create table download_log(id         integer constraint download_log_pk primary key autoincrement,url        text,file_path  text,file_name  TEXT,file_size  integer,created_at integer);");
+    }
   }
 
   static Future<Database> getCurrentDatabase() async {
@@ -69,4 +77,17 @@ class DB {
     _database?.close();
     _database = null;
   }
+
+  static Future<void> deleteByIds(String tableName, List<int> ids,
+      {DatabaseExecutor? db}) async {
+    var sql = "delete from $tableName where id in(";
+    for (var id in ids) {
+      sql += "?,";
+    }
+    sql = sql.substring(0, sql.length - 1);
+    sql += ")";
+
+    db = await DB.getDB(db);
+    await db.execute(sql, ids);
+  }
 }