107 lines
2.6 KiB
Dart
107 lines
2.6 KiB
Dart
/// 幣種模型
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class Coin {
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final int id;
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final String code;
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final String name;
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final String? icon;
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final double price;
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final double? priceUsd;
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final double? priceCny;
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final int priceType; // 1=實時價格, 2=管理員設置
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final double change24h;
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final double? high24h;
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final double? low24h;
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final double? volume24h;
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final int status;
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final int sort;
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Coin({
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required this.id,
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required this.code,
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required this.name,
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this.icon,
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required this.price,
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this.priceUsd,
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this.priceCny,
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required this.priceType,
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required this.change24h,
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this.high24h,
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this.low24h,
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this.volume24h,
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required this.status,
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this.sort = 0,
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});
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factory Coin.fromJson(Map<String, dynamic> json) {
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return Coin(
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id: json['id'] as int? ?? 0,
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code: json['code'] as String? ?? '',
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name: json['name'] as String? ?? '',
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icon: json['icon'] as String?,
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price: (json['price'] as num?)?.toDouble() ?? 0,
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priceUsd: (json['priceUsd'] as num?)?.toDouble(),
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priceCny: (json['priceCny'] as num?)?.toDouble(),
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priceType: json['priceType'] as int? ?? 1,
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change24h: (json['change24h'] as num?)?.toDouble() ?? 0,
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high24h: (json['high24h'] as num?)?.toDouble(),
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low24h: (json['low24h'] as num?)?.toDouble(),
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volume24h: (json['volume24h'] as num?)?.toDouble(),
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status: json['status'] as int? ?? 1,
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sort: json['sort'] as int? ?? 0,
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);
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}
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Map<String, dynamic> toJson() {
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return {
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'id': id,
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'code': code,
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'name': name,
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'icon': icon,
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'price': price,
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'priceUsd': priceUsd,
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'priceCny': priceCny,
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'priceType': priceType,
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'change24h': change24h,
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'high24h': high24h,
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'low24h': low24h,
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'volume24h': volume24h,
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'status': status,
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'sort': sort,
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};
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}
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/// 顯示圖標（Unicode 符號）
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String get displayIcon {
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const icons = {
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'BTC': '\u20BF',
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'ETH': '\u039E',
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'SOL': '\u25CD',
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'USDT': '\u20AE',
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'DOGE': '\uD83D\uDC15',
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'XRP': '\u2715',
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'BNB': '\u25B3',
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'ADA': '\u25C6',
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};
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return icons[code] ?? '\u25CF';
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}
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/// 格式化價格顯示
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String get formattedPrice {
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if (price >= 1000) return price.toStringAsFixed(2);
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if (price >= 1) return price.toStringAsFixed(4);
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return price.toStringAsFixed(6);
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}
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/// 格式化漲跌幅
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String get formattedChange {
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final prefix = change24h >= 0 ? '+' : '';
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return '$prefix${change24h.toStringAsFixed(2)}%';
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}
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/// 是否上漲
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bool get isUp => change24h >= 0;
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/// 是否為實時價格
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bool get isRealtime => priceType == 1;
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}
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