64 lines
1.5 KiB
Dart
64 lines
1.5 KiB
Dart
import 'package:equatable/equatable.dart';
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import 'package:json_annotation/json_annotation.dart';
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part 'user_credit.g.dart';
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/// 用户积分模型
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@JsonSerializable()
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class UserCredit extends Equatable {
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/// 用户ID
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final String userId;
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/// 积分余额
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final int credits;
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/// 积分与美元汇率（可选）
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final double? creditToUsdRate;
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const UserCredit({
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required this.userId,
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required this.credits,
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this.creditToUsdRate,
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});
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factory UserCredit.fromJson(Map<String, dynamic> json) =>
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_$UserCreditFromJson(json);
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Map<String, dynamic> toJson() => _$UserCreditToJson(this);
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@override
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List<Object?> get props => [userId, credits, creditToUsdRate];
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/// 获取格式化的积分显示文本
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String get formattedCredits {
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if (credits >= 1000000) {
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return '${(credits / 1000000).toStringAsFixed(1)}M';
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} else if (credits >= 1000) {
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return '${(credits / 1000).toStringAsFixed(1)}K';
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} else {
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return credits.toString();
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}
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}
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/// 获取等值美元显示（如果有汇率信息）
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String get equivalentUsd {
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if (creditToUsdRate != null && creditToUsdRate! > 0) {
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final usd = credits / creditToUsdRate!;
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return '\$${usd.toStringAsFixed(2)}';
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}
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return '';
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}
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/// 检查是否有足够积分
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bool hasEnoughCredits(int required) {
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return credits >= required;
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}
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/// 创建空积分对象
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factory UserCredit.empty() {
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return const UserCredit(
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userId: '',
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credits: 0,
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);
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}
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} |