feat: support custom tracker url (#59)

ui/flutter/lib/util/log_util.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 
+import 'package:flutter/foundation.dart';
 import 'package:logger/logger.dart';
 import 'package:logger/src/outputs/file_output.dart';
 
@@ -7,5 +8,13 @@ import 'util.dart';
 
 final logger = Logger(
   printer: PrettyPrinter(),
-  output: Util.isDesktop() ? FileOutput(file: File('log.txt')) : null,
+  output: buildOutput(),
 );
+
+buildOutput() {
+  // if is debug mode, output to console
+  if (!kDebugMode && Util.isDesktop()) {
+    return FileOutput(file: File('log.txt'));
+  }
+  return null;
+}

ui/flutter/lib/util/package_info.dart

@@ -0,0 +1,7 @@
+import 'package:package_info_plus/package_info_plus.dart';
+
+late PackageInfo packageInfo;
+
+Future<void> initPackageInfo() async {
+  packageInfo = await PackageInfo.fromPlatform();
+}

ui/flutter/lib/util/util.dart

@@ -3,6 +3,14 @@ import 'dart:io';
 import 'package:flutter/foundation.dart';
 
 class Util {
+  static String buildAbsPath(String dir, String path, String name) {
+    return (dir == "" ? "" : "$dir/") + buildPath(path, name);
+  }
+
+  static String buildPath(String path, String name) {
+    return (path == "" ? "" : "$path/") + name;
+  }
+
   static String fmtByte(int byte) {
     if (byte < 1024) {
       return "$byte B";
@@ -15,24 +23,16 @@ class Util {
     }
   }
 
-  static String buildPath(String path, String name) {
-    return (path == "" ? "" : "$path/") + name;
-  }
-
-  static String buildAbsPath(String dir, String path, String name) {
-    return (dir == "" ? "" : "$dir/") + buildPath(path, name);
-  }
-
-  static isWeb() {
-    return kIsWeb;
-  }
-
   static isAndroid() {
     return !kIsWeb && Platform.isAndroid;
   }
 
-  static isMacos() {
-    return !kIsWeb && Platform.isMacOS;
+  static isIOS() {
+    return !kIsWeb && Platform.isIOS;
+  }
+
+  static isMobile() {
+    return !kIsWeb && (Platform.isAndroid || Platform.isIOS);
   }
 
   static isDesktop() {
@@ -42,10 +42,18 @@ class Util {
     return Platform.isWindows || Platform.isLinux || Platform.isMacOS;
   }
 
+  static isMacos() {
+    return !kIsWeb && Platform.isMacOS;
+  }
+
   static isUnix() {
     if (kIsWeb) {
       return false;
     }
     return !Platform.isWindows;
   }
+
+  static isWeb() {
+    return kIsWeb;
+  }
 }