scaffolding

lib/log/loggy.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter/foundation.dart';
+import 'package:loggy/loggy.dart';
+import 'package:ansicolor/ansicolor.dart';
+
+// Loggy tools
+const LogLevel traceLevel = LogLevel('Trace', 1);
+
+String wrapWithLogColor(LogLevel? level, String text) {
+  if (level == null) {
+    return text;
+  }
+  final pen = AnsiPen();
+  ansiColorDisabled = false;
+  switch (level) {
+    case LogLevel.error:
+      pen
+        ..reset()
+        ..red(bold: true);
+      return pen(text);
+    case LogLevel.warning:
+      pen
+        ..reset()
+        ..yellow(bold: true);
+      return pen(text);
+    case LogLevel.info:
+      pen
+        ..reset()
+        ..white(bold: true);
+      return pen(text);
+    case LogLevel.debug:
+      pen
+        ..reset()
+        ..green(bold: true);
+      return pen(text);
+    case traceLevel:
+      pen
+        ..reset()
+        ..blue(bold: true);
+      return pen(text);
+  }
+  return text;
+}
+
+extension PrettyPrintLogRecord on LogRecord {
+  String pretty() {
+    final lstr =
+        wrapWithLogColor(level, '[${level.toString().substring(0, 1)}]');
+    return '$lstr $message';
+  }
+}
+
+class CallbackPrinter extends LoggyPrinter {
+  CallbackPrinter() : super();
+
+  void Function(LogRecord)? callback;
+
+  @override
+  void onLog(LogRecord record) {
+    debugPrint(record.pretty());
+    callback?.call(record);
+  }
+
+  void setCallback(Function(LogRecord)? cb) {
+    callback = cb;
+  }
+}
+
+var globalTerminalPrinter = CallbackPrinter();
+
+extension TraceLoggy on Loggy {
+  void trace(dynamic message, [Object? error, StackTrace? stackTrace]) =>
+      this.log(traceLevel, message, error, stackTrace);
+}
+
+LogOptions getLogOptions(LogLevel? level) {
+  return LogOptions(
+    level ?? LogLevel.all,
+    stackTraceLevel: LogLevel.error,
+  );
+}
+
+class RootLoggy implements LoggyType {
+  @override
+  Loggy<RootLoggy> get loggy => Loggy<RootLoggy>('');
+}
+
+Loggy get log => Loggy<RootLoggy>('');
+
+void initLoggy() {
+  Loggy.initLoggy(
+    logPrinter: globalTerminalPrinter,
+    logOptions: getLogOptions(null),
+  );
+
+  const isTrace = String.fromEnvironment("logTrace", defaultValue: "") != "";
+  LogLevel logLevel;
+  if (isTrace) {
+    logLevel = traceLevel;
+  } else {
+    logLevel = kDebugMode ? LogLevel.debug : LogLevel.info;
+  }
+
+  Loggy('').level = getLogOptions(logLevel);
+}

lib/log/state_logger.dart

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+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'loggy.dart';
+
+class StateLogger extends ProviderObserver {
+  const StateLogger();
+  @override
+  void didUpdateProvider(
+    ProviderBase provider,
+    Object? previousValue,
+    Object? newValue,
+    ProviderContainer container,
+  ) {
+    log.debug('''{
+  provider: ${provider.name ?? provider.runtimeType},
+  oldValue: $previousValue,
+  newValue: $newValue
+}
+''');
+    super.didUpdateProvider(provider, previousValue, newValue, container);
+  }
+}