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sjk
382
client/lib/shared/providers/error_provider.dart
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382
client/lib/shared/providers/error_provider.dart
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import 'package:flutter/foundation.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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/// 错误类型枚举
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enum ErrorType {
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network,
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authentication,
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validation,
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server,
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unknown,
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}
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/// 错误严重程度枚举
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enum ErrorSeverity {
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info,
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warning,
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error,
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critical,
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}
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/// 应用错误模型
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class AppError {
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final String id;
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final String message;
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final String? details;
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final ErrorType type;
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final ErrorSeverity severity;
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final DateTime timestamp;
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final String? stackTrace;
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final Map<String, dynamic>? context;
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const AppError({
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required this.id,
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required this.message,
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this.details,
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required this.type,
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required this.severity,
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required this.timestamp,
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this.stackTrace,
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this.context,
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});
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AppError copyWith({
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String? id,
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String? message,
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String? details,
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ErrorType? type,
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ErrorSeverity? severity,
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DateTime? timestamp,
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String? stackTrace,
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Map<String, dynamic>? context,
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}) {
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return AppError(
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id: id ?? this.id,
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message: message ?? this.message,
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details: details ?? this.details,
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type: type ?? this.type,
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severity: severity ?? this.severity,
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timestamp: timestamp ?? this.timestamp,
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stackTrace: stackTrace ?? this.stackTrace,
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context: context ?? this.context,
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);
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}
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@override
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bool operator ==(Object other) {
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if (identical(this, other)) return true;
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return other is AppError &&
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other.id == id &&
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other.message == message &&
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other.type == type &&
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other.severity == severity;
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}
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@override
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int get hashCode {
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return id.hashCode ^
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message.hashCode ^
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type.hashCode ^
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severity.hashCode;
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}
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@override
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String toString() {
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return 'AppError(id: $id, message: $message, type: $type, severity: $severity, timestamp: $timestamp)';
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}
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/// 创建网络错误
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factory AppError.network(String message, {String? details, Map<String, dynamic>? context}) {
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return AppError(
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id: DateTime.now().millisecondsSinceEpoch.toString(),
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message: message,
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details: details,
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type: ErrorType.network,
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severity: ErrorSeverity.error,
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timestamp: DateTime.now(),
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context: context,
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);
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}
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/// 创建认证错误
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factory AppError.authentication(String message, {String? details, Map<String, dynamic>? context}) {
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return AppError(
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id: DateTime.now().millisecondsSinceEpoch.toString(),
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message: message,
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details: details,
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type: ErrorType.authentication,
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severity: ErrorSeverity.error,
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timestamp: DateTime.now(),
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context: context,
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);
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}
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/// 创建验证错误
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factory AppError.validation(String message, {String? details, Map<String, dynamic>? context}) {
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return AppError(
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id: DateTime.now().millisecondsSinceEpoch.toString(),
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message: message,
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details: details,
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type: ErrorType.validation,
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severity: ErrorSeverity.warning,
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timestamp: DateTime.now(),
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context: context,
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);
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}
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/// 创建服务器错误
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factory AppError.server(String message, {String? details, Map<String, dynamic>? context}) {
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return AppError(
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id: DateTime.now().millisecondsSinceEpoch.toString(),
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message: message,
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details: details,
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type: ErrorType.server,
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severity: ErrorSeverity.error,
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timestamp: DateTime.now(),
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context: context,
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);
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}
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/// 创建未知错误
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factory AppError.unknown(String message, {String? details, String? stackTrace, Map<String, dynamic>? context}) {
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return AppError(
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id: DateTime.now().millisecondsSinceEpoch.toString(),
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message: message,
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details: details,
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type: ErrorType.unknown,
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severity: ErrorSeverity.error,
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timestamp: DateTime.now(),
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stackTrace: stackTrace,
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context: context,
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);
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}
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}
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/// 错误状态模型
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class ErrorState {
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final List<AppError> errors;
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final AppError? currentError;
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const ErrorState({
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required this.errors,
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this.currentError,
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});
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bool get hasErrors => errors.isNotEmpty;
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ErrorState copyWith({
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List<AppError>? errors,
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AppError? currentError,
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}) {
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return ErrorState(
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errors: errors ?? this.errors,
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currentError: currentError,
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);
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}
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@override
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bool operator ==(Object other) {
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if (identical(this, other)) return true;
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return other is ErrorState &&
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other.errors.length == errors.length &&
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other.currentError == currentError;
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}
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@override
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int get hashCode {
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return errors.hashCode ^ currentError.hashCode;
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}
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}
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/// 错误管理Provider
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class ErrorNotifier extends StateNotifier<ErrorState> {
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static const int maxErrorCount = 50; // 最大错误数量
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static const Duration errorRetentionDuration = Duration(hours: 24); // 错误保留时间
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ErrorNotifier() : super(const ErrorState(errors: []));
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/// 添加错误
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void addError(AppError error) {
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final updatedErrors = List<AppError>.from(state.errors);
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updatedErrors.insert(0, error); // 新错误插入到列表开头
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// 限制错误数量
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if (updatedErrors.length > maxErrorCount) {
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updatedErrors.removeRange(maxErrorCount, updatedErrors.length);
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}
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// 清理过期错误
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_cleanExpiredErrors(updatedErrors);
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state = state.copyWith(
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errors: updatedErrors,
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currentError: error,
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);
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// 在调试模式下打印错误
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if (kDebugMode) {
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print('Error added: ${error.toString()}');
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if (error.stackTrace != null) {
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print('Stack trace: ${error.stackTrace}');
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}
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}
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}
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/// 清除当前错误
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void clearCurrentError() {
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state = state.copyWith(currentError: null);
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}
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/// 清除指定错误
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void removeError(String errorId) {
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final updatedErrors = state.errors.where((error) => error.id != errorId).toList();
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AppError? newCurrentError = state.currentError;
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if (state.currentError?.id == errorId) {
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newCurrentError = null;
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}
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state = state.copyWith(
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errors: updatedErrors,
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currentError: newCurrentError,
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);
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}
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/// 清除所有错误
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void clearAllErrors() {
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state = const ErrorState(errors: []);
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}
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/// 清除指定类型的错误
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void clearErrorsByType(ErrorType type) {
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final updatedErrors = state.errors.where((error) => error.type != type).toList();
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AppError? newCurrentError = state.currentError;
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if (state.currentError?.type == type) {
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newCurrentError = null;
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}
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state = state.copyWith(
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errors: updatedErrors,
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currentError: newCurrentError,
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);
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}
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/// 清除指定严重程度的错误
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void clearErrorsBySeverity(ErrorSeverity severity) {
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final updatedErrors = state.errors.where((error) => error.severity != severity).toList();
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AppError? newCurrentError = state.currentError;
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if (state.currentError?.severity == severity) {
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newCurrentError = null;
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}
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state = state.copyWith(
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errors: updatedErrors,
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currentError: newCurrentError,
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);
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}
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/// 获取指定类型的错误
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List<AppError> getErrorsByType(ErrorType type) {
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return state.errors.where((error) => error.type == type).toList();
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}
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/// 获取指定严重程度的错误
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List<AppError> getErrorsBySeverity(ErrorSeverity severity) {
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return state.errors.where((error) => error.severity == severity).toList();
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}
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/// 获取最近的错误
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List<AppError> getRecentErrors({int count = 10}) {
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return state.errors.take(count).toList();
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}
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/// 检查是否有指定类型的错误
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bool hasErrorOfType(ErrorType type) {
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return state.errors.any((error) => error.type == type);
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}
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/// 检查是否有指定严重程度的错误
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bool hasErrorOfSeverity(ErrorSeverity severity) {
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return state.errors.any((error) => error.severity == severity);
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}
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/// 清理过期错误
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void _cleanExpiredErrors(List<AppError> errors) {
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final now = DateTime.now();
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errors.removeWhere((error) =>
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now.difference(error.timestamp) > errorRetentionDuration);
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}
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/// 处理异常并转换为AppError
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void handleException(dynamic exception, {
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String? message,
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ErrorType? type,
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ErrorSeverity? severity,
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Map<String, dynamic>? context,
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}) {
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String errorMessage = message ?? exception.toString();
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ErrorType errorType = type ?? ErrorType.unknown;
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ErrorSeverity errorSeverity = severity ?? ErrorSeverity.error;
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String? stackTrace;
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if (exception is Error) {
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stackTrace = exception.stackTrace?.toString();
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}
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final error = AppError(
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id: DateTime.now().millisecondsSinceEpoch.toString(),
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message: errorMessage,
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details: exception.toString(),
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type: errorType,
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severity: errorSeverity,
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timestamp: DateTime.now(),
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stackTrace: stackTrace,
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context: context,
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);
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addError(error);
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}
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}
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/// 错误状态Provider
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final errorProvider = StateNotifierProvider<ErrorNotifier, ErrorState>(
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(ref) => ErrorNotifier(),
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);
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/// 当前错误Provider
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final currentErrorProvider = Provider<AppError?>(
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(ref) => ref.watch(errorProvider).currentError,
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);
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/// 是否有错误Provider
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final hasErrorsProvider = Provider<bool>(
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(ref) => ref.watch(errorProvider).hasErrors,
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);
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/// 错误数量Provider
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final errorCountProvider = Provider<int>(
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(ref) => ref.watch(errorProvider).errors.length,
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);
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/// 网络错误Provider
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final networkErrorsProvider = Provider<List<AppError>>(
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(ref) => ref.watch(errorProvider).errors
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.where((error) => error.type == ErrorType.network)
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.toList(),
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);
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/// 认证错误Provider
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final authErrorsProvider = Provider<List<AppError>>(
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(ref) => ref.watch(errorProvider).errors
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.where((error) => error.type == ErrorType.authentication)
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.toList(),
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);
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/// 严重错误Provider
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final criticalErrorsProvider = Provider<List<AppError>>(
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(ref) => ref.watch(errorProvider).errors
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.where((error) => error.severity == ErrorSeverity.critical)
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.toList(),
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);
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