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flutter_monisuo/lib/data/models/kline_candle.dart

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+/// K线蜡烛数据模型
+class KlineCandle {
+  final String coinCode;
+  final String interval;
+  final int openTime;
+  final double openPrice;
+  final double highPrice;
+  final double lowPrice;
+  final double closePrice;
+  final double volume;
+  final int closeTime;
+  final bool isClosed;
+  final int? timestamp;
+
+  const KlineCandle({
+    required this.coinCode,
+    required this.interval,
+    required this.openTime,
+    required this.openPrice,
+    required this.highPrice,
+    required this.lowPrice,
+    required this.closePrice,
+    required this.volume,
+    required this.closeTime,
+    this.isClosed = true,
+    this.timestamp,
+  });
+
+  factory KlineCandle.fromJson(Map<String, dynamic> json) {
+    return KlineCandle(
+      coinCode: json['coinCode'] as String? ?? '',
+      interval: json['interval'] as String? ?? '1h',
+      openTime: json['openTime'] as int? ?? 0,
+      openPrice: _toDouble(json['openPrice']),
+      highPrice: _toDouble(json['highPrice']),
+      lowPrice: _toDouble(json['lowPrice']),
+      closePrice: _toDouble(json['closePrice']),
+      volume: _toDouble(json['volume']),
+      closeTime: json['closeTime'] as int? ?? 0,
+      isClosed: json['isClosed'] as bool? ?? true,
+      timestamp: json['timestamp'] as int?,
+    );
+  }
+
+  static double _toDouble(dynamic v) {
+    if (v == null) return 0.0;
+    if (v is double) return v;
+    if (v is int) return v.toDouble();
+    if (v is String) return double.tryParse(v) ?? 0.0;
+    return 0.0;
+  }
+
+  /// 转换为 k_chart 库的 KLineEntity 格式
+  Map<String, dynamic> toKLineEntityMap() {
+    return {
+      'open': openPrice,
+      'high': highPrice,
+      'low': lowPrice,
+      'close': closePrice,
+      'vol': volume,
+      'amount': closePrice * volume,
+      'time': openTime,
+      'id': openTime,
+    };
+  }
+
+  /// 转换为 k_chart KLineEntity 对象
+  dynamic toKLineEntity() {
+    // k_chart KLineEntity.fromCustom 构造器
+    return null; // placeholder, actual conversion in kline_page
+  }
+
+  /// 从 REST API JSON 转换（历史K线）
+  factory KlineCandle.fromHistoryJson(Map<String, dynamic> json) {
+    return KlineCandle(
+      coinCode: json['coinCode'] as String? ?? '',
+      interval: json['interval'] as String? ?? '1h',
+      openTime: json['openTime'] as int? ?? 0,
+      openPrice: _toDouble(json['openPrice']),
+      highPrice: _toDouble(json['highPrice']),
+      lowPrice: _toDouble(json['lowPrice']),
+      closePrice: _toDouble(json['closePrice']),
+      volume: _toDouble(json['volume']),
+      closeTime: json['closeTime'] as int? ?? 0,
+      isClosed: true,
+    );
+  }
+}