astute_logger 2.0.2

A simple and powerful logger for Flutter apps with support for color-coding, JSON pretty-printing, and performance tracking.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:astute_logger/astute_logger.dart';
import 'dart:async';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const LoggerDemoApp());
}

class LoggerDemoApp extends StatelessWidget {
  const LoggerDemoApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'AstuteLogger Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData.dark(),
      home: const LoggerDemoPage(),
    );
  }
}

class LoggerDemoPage extends StatefulWidget {
  const LoggerDemoPage({super.key});

  @override
  State<LoggerDemoPage> createState() => _LoggerDemoPageState();
}

class _LoggerDemoPageState extends State<LoggerDemoPage> {
  late AstuteLogger logger;

  @override
  void initState() {
    super.initState();

    logger = AstuteLogger(
      "DEMO_APP",
      enableFileLogging: true,
      fileNamePrefix: "demo_log",
    );

    // Initialize file logging
    Future.microtask(() async {
      await logger.initFileLogging();
      logger.info("Logger initialized");
    });
  }

  @override
  void dispose() {
    logger.dispose();
    super.dispose();
  }

  Widget button(String text, Function() onTap) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 6),
      child: ElevatedButton(
        onPressed: onTap,
        style: ElevatedButton.styleFrom(
            minimumSize: const Size(double.infinity, 48),
            backgroundColor: Colors.blueGrey),
        child: Text(text),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("AstuteLogger Demo"),
      ),
      body: ListView(
        padding: const EdgeInsets.all(16),
        children: [
          const Text(
            "Basic Logging",
            style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
          ),
          button("Debug Log", () => logger.debug("This is a DEBUG message")),
          button("Info Log", () => logger.info("This is an INFO message")),
          button("Warning Log", () => logger.warning("This is a WARNING")),
          button("Error Log", () => logger.error("This is an ERROR")),
          const SizedBox(height: 20),
          const Text("🔥 Redaction", style: TextStyle(fontSize: 18)),
          button("Redact Password",
              () => logger.info('{"user":"test","password":"secret123"}')),
          button(
              "Redact Tokens",
              () => logger
                  .info('{"accessToken":"abc-123","RefreshToken":"xyz"}')),
          const SizedBox(height: 20),
          const Text("🧠 JSON Logging", style: TextStyle(fontSize: 18)),
          button("Pretty JSON", () {
            logger.logJson({
              "name": "John",
              "id": 101,
              "skills": ["Flutter", "Dart", "Firebase"]
            });
          }),
          button("Invalid JSON", () => logger.logJson("invalid{json")),
          const SizedBox(height: 20),
          const Text("📋 Pretty List Logging", style: TextStyle(fontSize: 18)),
          button(
              "Pretty List",
              () => logger.logPrettyList(["Apple", "Banana", "Cherry"],
                  label: "Fruits")),
          const SizedBox(height: 20),
          const Text("⏱ Execution Time", style: TextStyle(fontSize: 18)),
          button("Measure Function Time", () {
            final result = logger.logExecutionTime("Heavy Operation", () {
              int sum = 0;
              for (int i = 0; i < 5000000; i++) sum += i;
              return sum;
            });
            logger.info("Execution result: $result");
          }),
          const SizedBox(height: 20),
          const Text("🎨 Color Logging", style: TextStyle(fontSize: 18)),
          button(
              "Green Text",
              () => logger.logWithColor("SUCCESS message",
                  color: LogColor.green.code)),
          button(
              "Red Text",
              () => logger.logWithColor("ERROR message",
                  color: LogColor.red.code)),
          button(
              "Blue Text",
              () => logger.logWithColor("INFO message",
                  color: LogColor.blue.code)),
          button(
              "Yellow Text",
              () => logger.logWithColor("WARNING message",
                  color: LogColor.yellow.code)),
          const SizedBox(height: 20),
          const Text("📁 File Logging", style: TextStyle(fontSize: 18)),
          button("Write to File", () => logger.info("Writing log to file...")),
          button("Print All File Logs", () async {
            await logger.printAllLogsToConsole();
          }),
          button("Share Log File", () async {
            final ok = await logger.shareLogFile(
                subject: "Demo Logs", text: "Here is my AstuteLogger file");
            logger.info("Share result = $ok");
          }),
          const SizedBox(height: 20),
          const Text("🔍 Search Logs", style: TextStyle(fontSize: 18)),
          button("Search for 'ERROR' & 'Flutter'", () async {
            await logger.searchLogs(
              keywords: ["error", "flutter"],
              chunkSize: 3,
              reverse: false,
            );
          }),
          const SizedBox(height: 20),
          const Text("🔠 Multi-line Logging", style: TextStyle(fontSize: 18)),
          button("Multi-line Log", () {
            logger.info("Line A\nLine B\nLine C");
          }),
          const SizedBox(height: 40),
        ],
      ),
    );
  }
}