import 'package:intl/intl.dart';

extension DateTimeX on DateTime {
  /// yyyy-MM-dd
  String get fmtDate => DateFormat('yyyy-MM-dd').format(this);

  /// yyyy-MM-dd HH:mm:ss
  String get fmtDateTime => DateFormat('yyyy-MM-dd HH:mm:ss').format(this);

  /// HH:mm
  String get fmtHm => DateFormat('HH:mm').format(this);

  /// 友好相对时间："刚刚 / 5 分钟前 / 昨天 18:24 / 03-15 / 2024-03-15"
  String get toFriendly {
    final now = DateTime.now();
    final diff = now.difference(this);

    if (diff.inSeconds < 60) return '刚刚';
    if (diff.inMinutes < 60) return '${diff.inMinutes} 分钟前';
    if (diff.inHours < 24 && now.day == day) {
      return '今天 $fmtHm';
    }
    if (diff.inDays < 2 && now.day - day == 1) {
      return '昨天 $fmtHm';
    }
    if (year == now.year) {
      return DateFormat('MM-dd HH:mm').format(this);
    }
    return fmtDate;
  }
}

extension NullableDateTimeX on DateTime? {
  String get orPlaceholder => this?.fmtDateTime ?? '-';
  String get orPlaceholderDate => this?.fmtDate ?? '-';
}