feat: support use server time for file creation (#359)

ui/flutter/lib/api/model/downloader_config.dart

@@ -4,13 +4,16 @@ part 'downloader_config.g.dart';
 
 @JsonSerializable(explicitToJson: true)
 class DownloaderConfig {
-  String downloadDir = '';
-  int maxRunning = 0;
+  String downloadDir;
+  int maxRunning;
   ProtocolConfig protocolConfig = ProtocolConfig();
   ExtraConfig extra = ExtraConfig();
   ProxyConfig proxy = ProxyConfig();
 
-  DownloaderConfig();
+  DownloaderConfig({
+    this.downloadDir = '',
+    this.maxRunning = 0,
+  });
 
   factory DownloaderConfig.fromJson(Map<String, dynamic> json) =>
       _$DownloaderConfigFromJson(json);
@@ -31,11 +34,16 @@ class ProtocolConfig {
 
 @JsonSerializable()
 class HttpConfig {
-  String userAgent =
-      'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36';
-  int connections = 0;
+  String userAgent;
+  int connections;
+  bool useServerCtime;
 
-  HttpConfig();
+  HttpConfig({
+    this.userAgent =
+        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36',
+    this.connections = 16,
+    this.useServerCtime = false,
+  });
 
   factory HttpConfig.fromJson(Map<String, dynamic> json) =>
       _$HttpConfigFromJson(json);
@@ -69,13 +77,19 @@ class ExtraConfig {
 
 @JsonSerializable()
 class ProxyConfig {
-  bool enable = false;
-  String scheme = '';
-  String host = '';
-  String usr = '';
-  String pwd = '';
+  bool enable;
+  String scheme;
+  String host;
+  String usr;
+  String pwd;
 
-  ProxyConfig();
+  ProxyConfig({
+    this.enable = false,
+    this.scheme = '',
+    this.host = '',
+    this.usr = '',
+    this.pwd = '',
+  });
 
   factory ProxyConfig.fromJson(Map<String, dynamic> json) =>
       _$ProxyConfigFromJson(json);
@@ -85,13 +99,20 @@ class ProxyConfig {
 
 @JsonSerializable()
 class ExtraConfigBt {
-  List<String> trackerSubscribeUrls = [];
-  List<String> subscribeTrackers = [];
+  List<String> trackerSubscribeUrls;
+  List<String> subscribeTrackers;
+  bool autoUpdateTrackers;
   DateTime? lastTrackerUpdateTime;
 
-  List<String> customTrackers = [];
+  List<String> customTrackers;
 
-  ExtraConfigBt();
+  ExtraConfigBt({
+    this.trackerSubscribeUrls = const [],
+    this.subscribeTrackers = const [],
+    this.autoUpdateTrackers = true,
+    this.lastTrackerUpdateTime,
+    this.customTrackers = const [],
+  });
 
   factory ExtraConfigBt.fromJson(Map<String, dynamic> json) =>
       _$ExtraConfigBtFromJson(json);

ui/flutter/lib/api/model/downloader_config.g.dart

@@ -7,9 +7,10 @@ part of 'downloader_config.dart';
 // **************************************************************************
 
 DownloaderConfig _$DownloaderConfigFromJson(Map<String, dynamic> json) =>
-    DownloaderConfig()
-      ..downloadDir = json['downloadDir'] as String
-      ..maxRunning = json['maxRunning'] as int
+    DownloaderConfig(
+      downloadDir: json['downloadDir'] as String? ?? '',
+      maxRunning: json['maxRunning'] as int? ?? 0,
+    )
       ..protocolConfig = ProtocolConfig.fromJson(
           json['protocolConfig'] as Map<String, dynamic>?)
       ..extra = ExtraConfig.fromJson(json['extra'] as Map<String, dynamic>?)
@@ -35,14 +36,18 @@ Map<String, dynamic> _$ProtocolConfigToJson(ProtocolConfig instance) =>
       'bt': instance.bt.toJson(),
     };
 
-HttpConfig _$HttpConfigFromJson(Map<String, dynamic> json) => HttpConfig()
-  ..userAgent = json['userAgent'] as String
-  ..connections = json['connections'] as int;
+HttpConfig _$HttpConfigFromJson(Map<String, dynamic> json) => HttpConfig(
+      userAgent: json['userAgent'] as String? ??
+          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36',
+      connections: json['connections'] as int? ?? 16,
+      useServerCtime: json['useServerCtime'] as bool? ?? false,
+    );
 
 Map<String, dynamic> _$HttpConfigToJson(HttpConfig instance) =>
     <String, dynamic>{
       'userAgent': instance.userAgent,
       'connections': instance.connections,
+      'useServerCtime': instance.useServerCtime,
     };
 
 BtConfig _$BtConfigFromJson(Map<String, dynamic> json) => BtConfig()
@@ -67,12 +72,13 @@ Map<String, dynamic> _$ExtraConfigToJson(ExtraConfig instance) =>
       'bt': instance.bt.toJson(),
     };
 
-ProxyConfig _$ProxyConfigFromJson(Map<String, dynamic> json) => ProxyConfig()
-  ..enable = json['enable'] as bool
-  ..scheme = json['scheme'] as String
-  ..host = json['host'] as String
-  ..usr = json['usr'] as String
-  ..pwd = json['pwd'] as String;
+ProxyConfig _$ProxyConfigFromJson(Map<String, dynamic> json) => ProxyConfig(
+      enable: json['enable'] as bool? ?? false,
+      scheme: json['scheme'] as String? ?? '',
+      host: json['host'] as String? ?? '',
+      usr: json['usr'] as String? ?? '',
+      pwd: json['pwd'] as String? ?? '',
+    );
 
 Map<String, dynamic> _$ProxyConfigToJson(ProxyConfig instance) =>
     <String, dynamic>{
@@ -84,24 +90,30 @@ Map<String, dynamic> _$ProxyConfigToJson(ProxyConfig instance) =>
     };
 
 ExtraConfigBt _$ExtraConfigBtFromJson(Map<String, dynamic> json) =>
-    ExtraConfigBt()
-      ..trackerSubscribeUrls = (json['trackerSubscribeUrls'] as List<dynamic>)
-          .map((e) => e as String)
-          .toList()
-      ..subscribeTrackers = (json['subscribeTrackers'] as List<dynamic>)
-          .map((e) => e as String)
-          .toList()
-      ..lastTrackerUpdateTime = json['lastTrackerUpdateTime'] == null
+    ExtraConfigBt(
+      trackerSubscribeUrls: (json['trackerSubscribeUrls'] as List<dynamic>?)
+              ?.map((e) => e as String)
+              .toList() ??
+          const [],
+      subscribeTrackers: (json['subscribeTrackers'] as List<dynamic>?)
+              ?.map((e) => e as String)
+              .toList() ??
+          const [],
+      autoUpdateTrackers: json['autoUpdateTrackers'] as bool? ?? true,
+      lastTrackerUpdateTime: json['lastTrackerUpdateTime'] == null
           ? null
-          : DateTime.parse(json['lastTrackerUpdateTime'] as String)
-      ..customTrackers = (json['customTrackers'] as List<dynamic>)
-          .map((e) => e as String)
-          .toList();
+          : DateTime.parse(json['lastTrackerUpdateTime'] as String),
+      customTrackers: (json['customTrackers'] as List<dynamic>?)
+              ?.map((e) => e as String)
+              .toList() ??
+          const [],
+    );
 
 Map<String, dynamic> _$ExtraConfigBtToJson(ExtraConfigBt instance) {
   final val = <String, dynamic>{
     'trackerSubscribeUrls': instance.trackerSubscribeUrls,
     'subscribeTrackers': instance.subscribeTrackers,
+    'autoUpdateTrackers': instance.autoUpdateTrackers,
   };
 
   void writeNotNull(String key, dynamic value) {