Add constants.dart

src/ui/flutter_app/lib/common/config.dart

@@ -16,6 +16,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/mill/rule.dart';
 import 'package:sanmill/style/app_theme.dart';
 
@@ -45,7 +46,7 @@ class Config {
   static bool experimentsEnabled = false;
 
   // Display
-  static String languageCode = "Default";
+  static String languageCode = Constants.defaultLanguageCodeName;
   static bool standardNotationEnabled = true;
   static bool isPieceCountInHandShown = false;
   static bool isNotationsShown = false;
@@ -106,7 +107,7 @@ class Config {
     Config.experimentsEnabled = settings['ExperimentsEnabled'] ?? false;
 
     // Display
-    Config.languageCode = settings['LanguageCode'] ?? "Default";
+    Config.languageCode = settings['LanguageCode'] ?? Constants.defaultLanguageCodeName;
     Config.standardNotationEnabled =
         settings['StandardNotationEnabled'] ?? true;
     Config.isPieceCountInHandShown =

src/ui/flutter_app/lib/common/constants.dart

@@ -0,0 +1,67 @@
+/*
+  This file is part of Sanmill.
+  Copyright (C) 2019-2021 The Sanmill developers (see AUTHORS file)
+
+  Sanmill is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  Sanmill is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+class Constants {
+  static String appName = "Mill";
+  static String authorAccount = "calcitem";
+  static String projectName = "Sanmill";
+  static String projectNameLower = projectName.toLowerCase();
+  static String recipients = "$authorAccount@outlook.com";
+
+  static String settingsFilename = "${projectNameLower}_settings.json";
+  static String crashLogsFileName = "$projectName-crash-logs.txt";
+  static String environmentVariablesFilename =
+      "assets/files/environment_variables.txt";
+  static String gplLicenseFilename = "assets/licenses/GPL-3.0.txt";
+
+  static String defaultLanguageCodeName = "Default";
+
+  static String feedbackSubjectPrefix = "[$appName] $projectName ";
+  static String feedbackSubjectSuffix = " Feedback";
+
+  static String githubURL = "https://github.com";
+  static String giteeURL = "https://gitee.com";
+
+  static String fullRepoName = "$authorAccount/$projectName";
+
+  static String githubRepoURL = "$githubURL/$fullRepoName";
+  static String giteeRepoURL = "$giteeURL/$fullRepoName";
+
+  static String githubRepoWiKiURL = "$githubURL/$fullRepoName/wiki";
+  static String giteeRepoWiKiURL = "$giteeURL/$fullRepoName/wikis";
+
+  static String githubIssuesURL = "$githubRepoURL/issues";
+  static String giteeIssuesURL = "$giteeRepoURL/issues";
+
+  static String githubEulaURL = "$githubRepoWiKiURL/EULA";
+  static String giteeEulaURL = "$giteeRepoWiKiURL/EULA_zh";
+
+  static String githubSourceCodeURL = "$githubRepoURL";
+  static String giteeSourceCodeURL = "$giteeRepoURL";
+
+  static String githubThirdPartyNoticesURL =
+      "$githubRepoURL/wiki/third-party_notices";
+  static String giteeThirdPartyNoticesURL =
+      "$giteeRepoURL/wikis/third-party_notices";
+
+  static String githubPrivacyPolicyURL = "$githubRepoWiKiURL/privacy_policy";
+  static String giteePrivacyPolicyURL = "$giteeRepoWiKiURL/privacy_policy_zh";
+
+  static String githubThanksURL = "$githubRepoWiKiURL/thanks";
+  static String giteeThanksURL = "$giteeRepoWiKiURL/thanks";
+}

src/ui/flutter_app/lib/common/settings.dart

@@ -20,9 +20,10 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:path_provider/path_provider.dart';
+import 'package:sanmill/common/constants.dart';
 
 class Settings {
-  static const settingsFileName = 'sanmill_settings.json';
+  static final settingsFileName = Constants.settingsFilename;
   static Settings? _instance;
 
   late File _file;

src/ui/flutter_app/lib/l10n/resources.dart

@@ -20,6 +20,7 @@ import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:sanmill/common/config.dart';
+import 'package:sanmill/common/constants.dart';
 
 final supportedLocales = [
   const Locale('en', ''),
@@ -193,7 +194,7 @@ class Resources {
   Resources();
 
   String get languageCode {
-    if (Config.languageCode == "Default") {
+    if (Config.languageCode == Constants.defaultLanguageCodeName) {
       return Platform.localeName.substring(0, 2);
     }
 

src/ui/flutter_app/lib/main.dart

@@ -26,6 +26,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:path_provider/path_provider.dart';
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/generated/l10n.dart';
 import 'package:sanmill/l10n/resources.dart';
 import 'package:sanmill/services/audios.dart';
@@ -53,9 +54,9 @@ Future<void> main() async {
     print(e);
     externalDirStr = ".";
   }
-  String path = externalDirStr + "/sanmill-crash-logs.txt";
+  String path = externalDirStr + "/" + Constants.crashLogsFileName;
   print("[env] ExternalStorageDirectory: " + externalDirStr);
-  String recipients = "calcitem@outlook.com";
+  String recipients = Constants.recipients;
 
   CatcherOptions debugOptions =
       CatcherOptions(PageReportMode(showStackTrace: true), [

src/ui/flutter_app/lib/widgets/about_page.dart

@@ -26,6 +26,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_email_sender/flutter_email_sender.dart';
 import 'package:package_info_plus/package_info_plus.dart';
 import 'package:path_provider/path_provider.dart';
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/generated/flutter_version.dart';
 import 'package:sanmill/generated/l10n.dart';
 import 'package:sanmill/style/app_theme.dart';
@@ -97,7 +98,7 @@ class _AboutPageState extends State<AboutPage> {
       SettingsListTile(
         context: context,
         titleString: S.of(context).versionInfo,
-        subtitleString: "Sanmill " + "$_version" + " " + mode,
+        subtitleString: Constants.projectName + " $_version" + " " + mode,
         onTap: _showVersionInfo,
       ),
       ListItemDivider(),
@@ -116,8 +117,10 @@ class _AboutPageState extends State<AboutPage> {
 
                 final Email email = Email(
                   body: feedback.text,
-                  subject: "[Mill] Sanmill " + "$_version" + " Feedback",
+                  subject: Constants.feedbackSubjectPrefix +
-                  recipients: ['calcitem@outlook.com'],
+                      "$_version" +
+                      Constants.feedbackSubjectSuffix,
+                  recipients: [Constants.recipients],
                   attachmentPaths: [screenshotFilePath],
                   isHTML: false,
                 );
@@ -209,9 +212,9 @@ class _AboutPageState extends State<AboutPage> {
 
     print("$tag local = $locale");
     if (locale != null && locale.startsWith("zh_")) {
-      _launchURL('https://gitee.com/calcitem/Sanmill/issues');
+      _launchURL(Constants.giteeIssuesURL);
     } else {
-      _launchURL('https://github.com/calcitem/Sanmill/issues');
+      _launchURL(Constants.githubIssuesURL);
     }
   }
 
@@ -224,9 +227,9 @@ class _AboutPageState extends State<AboutPage> {
 
     print("$tag local = $locale");
     if (locale != null && locale.startsWith("zh_")) {
-      _launchURL('https://gitee.com/calcitem/Sanmill/wikis/EULA_zh');
+      _launchURL(Constants.giteeEulaURL);
     } else {
-      _launchURL('https://github.com/calcitem/Sanmill/wiki/EULA');
+      _launchURL(Constants.githubEulaURL);
     }
   }
 
@@ -239,9 +242,9 @@ class _AboutPageState extends State<AboutPage> {
 
     print("$tag local = $locale");
     if (locale != null && locale.startsWith("zh_")) {
-      _launchURL('https://gitee.com/calcitem/Sanmill');
+      _launchURL(Constants.giteeSourceCodeURL);
     } else {
-      _launchURL('https://github.com/calcitem/Sanmill');
+      _launchURL(Constants.githubSourceCodeURL);
     }
   }
 
@@ -260,11 +263,9 @@ class _AboutPageState extends State<AboutPage> {
 
     print("$tag local = $locale");
     if (locale != null && locale.startsWith("zh_")) {
-      _launchURL(
+      _launchURL(Constants.giteeThirdPartyNoticesURL);
-          'https://gitee.com/calcitem/Sanmill/wikis/third-party_notices');
     } else {
-      _launchURL(
+      _launchURL(Constants.githubThirdPartyNoticesURL);
-          'https://github.com/calcitem/Sanmill/wiki/third-party_notices');
     }
     */
   }
@@ -278,9 +279,9 @@ class _AboutPageState extends State<AboutPage> {
 
     print("$tag local = $locale");
     if (locale != null && locale.startsWith("zh_")) {
-      _launchURL('https://gitee.com/calcitem/Sanmill/wikis/privacy_policy_zh');
+      _launchURL(Constants.giteePrivacyPolicyURL);
     } else {
-      _launchURL('https://github.com/calcitem/Sanmill/wiki/privacy_policy');
+      _launchURL(Constants.githubPrivacyPolicyURL);
     }
   }
 
@@ -293,9 +294,9 @@ class _AboutPageState extends State<AboutPage> {
 
     print("$tag local = $locale");
     if (locale != null && locale.startsWith("zh_")) {
-      _launchURL('https://gitee.com/calcitem/Sanmill/wikis/thanks');
+      _launchURL(Constants.giteeThanksURL);
     } else {
-      _launchURL('https://github.com/calcitem/Sanmill/wiki/thanks');
+      _launchURL(Constants.githubThanksURL);
     }
   }
 

src/ui/flutter_app/lib/widgets/dialog.dart

@@ -24,6 +24,7 @@ import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:sanmill/common/config.dart';
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/generated/l10n.dart';
 import 'package:url_launcher/url_launcher.dart';
 
@@ -123,13 +124,11 @@ showPrivacyDialog(
 
   print("[about] local = $locale");
   if (locale != null && locale.startsWith("zh_")) {
-    eulaURL = 'https://gitee.com/calcitem/Sanmill/wikis/EULA_zh';
+    eulaURL = Constants.giteeEulaURL;
-    privacyPolicyURL =
+    privacyPolicyURL = Constants.giteePrivacyPolicyURL;
-        'https://gitee.com/calcitem/Sanmill/wikis/privacy_policy_zh';
   } else {
-    eulaURL = 'https://github.com/calcitem/Sanmill/wiki/EULA';
+    eulaURL = Constants.githubEulaURL;
-    privacyPolicyURL =
+    privacyPolicyURL = Constants.githubPrivacyPolicyURL;
-        'https://github.com/calcitem/Sanmill/wiki/privacy_policy';
   }
 
   final ThemeData themeData = Theme.of(context);

src/ui/flutter_app/lib/widgets/env_page.dart

@@ -18,11 +18,13 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart' show rootBundle;
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/generated/l10n.dart';
 
 class EnvironmentVariablesPage extends StatefulWidget {
   @override
-  _EnvironmentVariablesPageState createState() => _EnvironmentVariablesPageState();
+  _EnvironmentVariablesPageState createState() =>
+      _EnvironmentVariablesPageState();
 }
 
 class _EnvironmentVariablesPageState extends State<EnvironmentVariablesPage> {
@@ -30,7 +32,7 @@ class _EnvironmentVariablesPageState extends State<EnvironmentVariablesPage> {
 
   Future<void> _loadData() async {
     final _loadedData =
-        await rootBundle.loadString('assets/files/environment_variables.txt');
+        await rootBundle.loadString(Constants.environmentVariablesFilename);
     setState(() {
       _data = _loadedData;
     });
@@ -41,7 +43,8 @@ class _EnvironmentVariablesPageState extends State<EnvironmentVariablesPage> {
     _loadData();
 
     return Scaffold(
-      appBar: AppBar(title: Text(S.of(context).environmentVariables), centerTitle: true),
+      appBar: AppBar(
+          title: Text(S.of(context).environmentVariables), centerTitle: true),
       body: ListView(
         children: <Widget>[
           Container(

src/ui/flutter_app/lib/widgets/game_page.dart

@@ -23,6 +23,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:sanmill/common/config.dart';
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/engine/engine.dart';
 import 'package:sanmill/engine/native_engine.dart';
 import 'package:sanmill/generated/l10n.dart';
@@ -1651,7 +1652,7 @@ class _GamePageState extends State<GamePage>
     final route = ModalRoute.of(context)!.settings.name;
     print('$tag Game Page didPush route: $route');
     await widget.engine.setOptions();
-    if (Config.languageCode != "Default") {
+    if (Config.languageCode != Constants.defaultLanguageCodeName) {
       S.load(Locale(Config.languageCode));
       setState(() {});
     }
@@ -1662,7 +1663,7 @@ class _GamePageState extends State<GamePage>
     final route = ModalRoute.of(context)!.settings.name;
     print('$tag Game Page didPopNext route: $route');
     await widget.engine.setOptions();
-    if (Config.languageCode != "Default") {
+    if (Config.languageCode != Constants.defaultLanguageCodeName) {
       S.load(Locale(Config.languageCode));
     }
   }
@@ -1672,7 +1673,7 @@ class _GamePageState extends State<GamePage>
     final route = ModalRoute.of(context)!.settings.name;
     print('$tag Game Page didPushNext route: $route');
     await widget.engine.setOptions();
-    if (Config.languageCode != "Default") {
+    if (Config.languageCode != Constants.defaultLanguageCodeName) {
       S.load(Locale(Config.languageCode));
     }
   }

src/ui/flutter_app/lib/widgets/license_page.dart

@@ -18,6 +18,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart' show rootBundle;
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/generated/l10n.dart';
 
 class LicenseAgreementPage extends StatefulWidget {
@@ -30,7 +31,7 @@ class _LicenseAgreementPageState extends State<LicenseAgreementPage> {
 
   Future<void> _loadData() async {
     final _loadedData =
-        await rootBundle.loadString('assets/licenses/GPL-3.0.txt');
+        await rootBundle.loadString(Constants.gplLicenseFilename);
     setState(() {
       _data = _loadedData;
     });

src/ui/flutter_app/lib/widgets/personalization_settings_page.dart

@@ -19,6 +19,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_colorpicker/flutter_colorpicker.dart';
 import 'package:sanmill/common/config.dart';
+import 'package:sanmill/common/constants.dart';
 import 'package:sanmill/generated/l10n.dart';
 import 'package:sanmill/l10n/resources.dart';
 import 'package:sanmill/style/app_theme.dart';
@@ -341,7 +342,7 @@ class _PersonalizationSettingsPageState
           SettingsListTile(
             context: context,
             titleString: S.of(context).language,
-            trailingString: Config.languageCode == "Default"
+            trailingString: Config.languageCode == Constants.defaultLanguageCodeName
                 ? ""
                 : Config.languageCode.toString(),
             onTap: setLanguage,
@@ -471,7 +472,7 @@ class _PersonalizationSettingsPageState
       Navigator.of(context).pop();
 
       setState(() {
-        Config.languageCode = langCode ?? "Default";
+        Config.languageCode = langCode ?? Constants.defaultLanguageCodeName;
         S.load(Locale(Resources.of().languageCode));
       });
 
@@ -494,7 +495,7 @@ class _PersonalizationSettingsPageState
                     activeColor: AppTheme.switchListTileActiveColor,
                     title: Text(S.of(context).defaultLanguage),
                     groupValue: Config.languageCode,
-                    value: "Default",
+                    value: Constants.defaultLanguageCodeName,
                     onChanged: callback,
                   ),
                   ListItemDivider(),