78 lines
2.7 KiB
Dart
78 lines
2.7 KiB
Dart
/// 商品/活动项（V2 字段映射）- getGooglePayActivities / getApplePayActivities
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class ActivityItem {
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const ActivityItem({
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required this.code,
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required this.title,
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required this.credits,
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required this.actualAmount,
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this.originAmount,
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this.discountOff,
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this.bonus = 0,
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this.activityId,
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this.currency,
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});
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final String code; // helm 产品代码
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final String title; // glossary 标题
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final int credits; // greaves 积分数
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final String actualAmount; // guardian 实际金额
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final String? originAmount; // curriculum 原价
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final String? discountOff; // lead 折扣
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final int bonus; // forge 赠送积分
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final String? activityId; // warrior 活动ID
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final String? currency; // familiar 货币
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factory ActivityItem.fromJson(Map<String, dynamic> json) {
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return ActivityItem(
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code: json['helm']?.toString() ?? '',
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title: json['glossary']?.toString() ?? '',
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credits: (json['greaves'] as num?)?.toInt() ?? 0,
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actualAmount: json['guardian']?.toString() ?? '',
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originAmount: json['curriculum']?.toString(),
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discountOff: json['lead']?.toString(),
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bonus: (json['forge'] as num?)?.toInt() ?? 0,
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activityId: json['warrior']?.toString(),
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currency: json['familiar']?.toString(),
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);
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}
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/// 显示积分文案，如 "100 Credits"
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String get creditsDisplay =>
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credits > 0 ? '${credits.toString().replaceAllMapped(RegExp(r'(\d{1,3})(?=(\d{3})+(?!\d))'), (m) => '${m[1]},')} Credits' : title;
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/// 显示价格文案，带 $ 符号（支付流程文档要求 guardian 需显示 $）
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String get priceDisplayWithDollar {
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if (actualAmount.isEmpty) return '';
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final amount = actualAmount.trimLeft();
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if (amount.startsWith(r'$')) return actualAmount;
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return '\$$actualAmount';
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}
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/// 显示价格文案，如 "¥6" 或 "¥25 Save ¥5"
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String get priceDisplay {
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if (actualAmount.isEmpty) return '';
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if (discountOff != null && discountOff!.isNotEmpty) {
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return '$actualAmount $discountOff';
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}
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if (originAmount != null &&
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originAmount!.isNotEmpty &&
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originAmount != actualAmount) {
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final diff = _diffAmount(originAmount!, actualAmount);
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return diff.isNotEmpty ? '$actualAmount Save $diff' : actualAmount;
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}
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return actualAmount;
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}
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String _diffAmount(String origin, String actual) {
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try {
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final o = double.tryParse(origin.replaceAll(RegExp(r'[^\d.]'), '')) ?? 0;
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final a = double.tryParse(actual.replaceAll(RegExp(r'[^\d.]'), '')) ?? 0;
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final d = (o - a).toStringAsFixed(0);
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final currencySymbol = RegExp(r'^[^\d]+').stringMatch(actual) ?? '';
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return '$currencySymbol$d';
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} catch (_) {
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return '';
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}
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}
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}
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