马良AI写作初始化仓库
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邓滨杰
183
AINoval/lib/utils/date_time_parser.dart
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183
AINoval/lib/utils/date_time_parser.dart
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import 'package:ainoval/utils/logger.dart';
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/// 解析来自后端的多种日期时间格式 (String, List, double, int, Map)
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///
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/// 支持格式:
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/// - ISO 8601 字符串 (e.g., "2024-07-30T10:00:00Z", "2024-07-30T10:00:00.123Z")
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/// - Java LocalDateTime 数组格式 [year, month, day, hour, minute, second, nanoOfSecond]
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/// - Unix 时间戳 (秒, double 类型)
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/// - Unix 时间戳 (毫秒, int 类型)
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/// - 后端API响应中的嵌套时间字段 (Map格式)
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/// - null 值安全处理
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DateTime parseBackendDateTime(dynamic dateTimeValue) {
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if (dateTimeValue == null) {
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AppLogger.w('DateTimeParser', '接收到 null 日期时间值，返回当前时间');
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return DateTime.now();
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}
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if (dateTimeValue is String) {
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// 如果是字符串格式，支持多种ISO 8601格式
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try {
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// 先尝试标准解析
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return DateTime.parse(dateTimeValue);
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} catch (e) {
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// 尝试其他常见格式
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try {
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// 处理可能缺少时区信息的格式
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if (!dateTimeValue.contains('Z') && !dateTimeValue.contains('+') && !dateTimeValue.contains('-', 10)) {
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// 假设为本地时间，添加本地时区
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return DateTime.parse('${dateTimeValue}Z');
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}
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// 处理可能的空格分隔格式 "2024-07-30 10:00:00"
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if (dateTimeValue.contains(' ')) {
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final spacedFormat = dateTimeValue.replaceFirst(' ', 'T');
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return DateTime.parse(spacedFormat);
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}
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} catch (e2) {
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AppLogger.e('DateTimeParser', '多种格式解析均失败, 值: "$dateTimeValue"', e2);
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}
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AppLogger.e('DateTimeParser', '解析日期时间字符串失败, 值: "$dateTimeValue"', e);
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return DateTime.now(); // 解析失败时返回当前时间
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}
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} else if (dateTimeValue is Map) {
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// 处理Map格式，可能来自嵌套的API响应
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try {
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// 尝试从Map中提取时间信息
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if (dateTimeValue.containsKey('timestamp')) {
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return parseBackendDateTime(dateTimeValue['timestamp']);
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} else if (dateTimeValue.containsKey('time')) {
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return parseBackendDateTime(dateTimeValue['time']);
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} else if (dateTimeValue.containsKey('datetime')) {
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return parseBackendDateTime(dateTimeValue['datetime']);
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} else if (dateTimeValue.containsKey('createdAt')) {
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return parseBackendDateTime(dateTimeValue['createdAt']);
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} else if (dateTimeValue.containsKey('updatedAt')) {
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return parseBackendDateTime(dateTimeValue['updatedAt']);
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} else {
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// 如果Map包含year, month, day等字段，构造LocalDateTime数组
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if (dateTimeValue.containsKey('year') && dateTimeValue.containsKey('month') && dateTimeValue.containsKey('day')) {
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final year = dateTimeValue['year'] as int;
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final month = dateTimeValue['month'] as int;
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final day = dateTimeValue['day'] as int;
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final hour = (dateTimeValue['hour'] as int?) ?? 0;
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final minute = (dateTimeValue['minute'] as int?) ?? 0;
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final second = (dateTimeValue['second'] as int?) ?? 0;
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final millisecond = (dateTimeValue['millisecond'] as int?) ?? 0;
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final microsecond = (dateTimeValue['microsecond'] as int?) ?? 0;
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return DateTime(year, month, day, hour, minute, second, millisecond, microsecond);
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}
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}
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AppLogger.w('DateTimeParser', '无法识别的Map时间格式: $dateTimeValue');
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return DateTime.now();
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} catch (e) {
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AppLogger.e('DateTimeParser', '解析Map格式时间失败, 值: $dateTimeValue', e);
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return DateTime.now();
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}
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} else if (dateTimeValue is List) {
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// 如果是Java LocalDateTime数组格式 [year, month, day, hour, minute, second, nanoOfSecond]
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try {
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// 确保列表元素足够，并进行安全转换
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final year = dateTimeValue.isNotEmpty ? (dateTimeValue[0] as num).toInt() : DateTime.now().year;
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final month = dateTimeValue.length > 1 ? (dateTimeValue[1] as num).toInt() : 1;
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final day = dateTimeValue.length > 2 ? (dateTimeValue[2] as num).toInt() : 1;
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final hour = dateTimeValue.length > 3 ? (dateTimeValue[3] as num).toInt() : 0;
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final minute = dateTimeValue.length > 4 ? (dateTimeValue[4] as num).toInt() : 0;
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final second = dateTimeValue.length > 5 ? (dateTimeValue[5] as num).toInt() : 0;
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// 可选：处理纳秒，转换为毫秒和微秒
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final nanoOfSecond = dateTimeValue.length > 6 ? (dateTimeValue[6] as num).toInt() : 0;
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final millisecond = nanoOfSecond ~/ 1000000;
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final microsecond = (nanoOfSecond % 1000000) ~/ 1000;
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return DateTime(
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year,
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month,
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day,
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hour,
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minute,
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second,
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millisecond,
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microsecond,
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);
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} catch (e) {
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AppLogger.e('DateTimeParser', '解析LocalDateTime数组失败, 值: $dateTimeValue', e);
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return DateTime.now(); // 解析失败时返回当前时间
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}
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} else if (dateTimeValue is double) {
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// 如果是Instant格式的时间戳（秒为单位）
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try {
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// 将秒转换为毫秒
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final milliseconds = (dateTimeValue * 1000).round();
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return DateTime.fromMillisecondsSinceEpoch(milliseconds, isUtc: false); // 假设后端时间戳是本地时间，如果确定是UTC，改为true
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} catch (e) {
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AppLogger.e('DateTimeParser', '解析Instant时间戳(double)失败, 值: $dateTimeValue', e);
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return DateTime.now();
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}
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} else if (dateTimeValue is int) {
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// 假设是毫秒时间戳
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try {
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// 检查时间戳范围，区分秒和毫秒 (一个简单的启发式方法)
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if (dateTimeValue > 3000000000) { // 大约到 2065 年的毫秒数
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return DateTime.fromMillisecondsSinceEpoch(dateTimeValue, isUtc: false); // 假设是毫秒
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} else {
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return DateTime.fromMillisecondsSinceEpoch(dateTimeValue * 1000, isUtc: false); // 假设是秒
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}
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} catch (e) {
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AppLogger.e('DateTimeParser', '解析时间戳(int)失败, 值: $dateTimeValue', e);
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return DateTime.now();
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}
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} else {
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// 其他未知情况返回当前时间
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AppLogger.w('DateTimeParser', '未知的日期时间格式: $dateTimeValue (${dateTimeValue.runtimeType})');
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return DateTime.now();
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}
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}
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/// 安全解析时间字段，专门用于处理可能为null的时间值
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DateTime? parseBackendDateTimeSafely(dynamic dateTimeValue) {
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if (dateTimeValue == null) {
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return null;
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}
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try {
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return parseBackendDateTime(dateTimeValue);
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} catch (e) {
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AppLogger.e('DateTimeParser', '安全解析时间失败, 值: $dateTimeValue', e);
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return null;
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}
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}
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/// 解析策略响应中的时间字段
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/// 专门处理策略管理相关API响应中的时间字段
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Map<String, dynamic> parseStrategyResponseTimestamps(Map<String, dynamic> response) {
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final parsed = Map<String, dynamic>.from(response);
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// 常见的时间字段名称列表
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const timeFields = [
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'createdAt', 'updatedAt', 'publishedAt', 'reviewedAt',
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'submittedAt', 'approvedAt', 'rejectedAt', 'lastModifiedAt',
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'timestamp', 'time', 'date'
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];
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for (final field in timeFields) {
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if (parsed.containsKey(field) && parsed[field] != null) {
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try {
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parsed[field] = parseBackendDateTime(parsed[field]);
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} catch (e) {
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AppLogger.w('DateTimeParser', '解析响应中的时间字段 $field 失败: ${parsed[field]}');
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// 保持原值，避免数据丢失
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}
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}
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}
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return parsed;
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}
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/// 批量解析响应列表中的时间字段
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List<Map<String, dynamic>> parseResponseListTimestamps(List<dynamic> responseList) {
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return responseList.map((item) {
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if (item is Map<String, dynamic>) {
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return parseStrategyResponseTimestamps(item);
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}
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return item as Map<String, dynamic>;
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}).toList();
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}
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