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sion
2026-04-06 18:45:04 +08:00
parent 2e34072f45
commit ee8979f471
37 changed files with 5 additions and 2500 deletions
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88
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,
);
}
}

72
flutter_monisuo/lib/data/services/kline_service.dart
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import '../../core/constants/api_endpoints.dart';
import '../../core/network/api_response.dart';
import '../../core/network/dio_client.dart';
import '../models/kline_candle.dart';
/// K线 REST API 服务
class KlineService {
final DioClient _client;
KlineService(this._client);
/// 获取历史K线数据
Future<ApiResponse<List<KlineCandle>>> fetchHistory({
required String coinCode,
required String interval,
int limit = 200,
int? before,
}) async {
final params = <String, dynamic>{
'coinCode': coinCode,
'interval': interval,
'limit': limit,
};
if (before != null) params['before'] = before;
final response = await _client.get<Map<String, dynamic>>(
ApiEndpoints.klineHistory,
queryParameters: params,
);
if (response.success && response.data != null) {
final list = response.data!['list'] as List? ?? [];
final candles = list
.map((e) => KlineCandle.fromHistoryJson(e as Map<String, dynamic>))
.toList();
return ApiResponse.success(candles, response.message);
}
return ApiResponse.fail(response.message ?? '获取K线数据失败');
}
/// 获取当前进行中的K线
Future<ApiResponse<KlineCandle>> fetchCurrentCandle({
required String coinCode,
required String interval,
}) async {
final response = await _client.get<Map<String, dynamic>>(
ApiEndpoints.klineCurrent,
queryParameters: {'coinCode': coinCode, 'interval': interval},
);
if (response.success && response.data != null) {
return ApiResponse.success(
KlineCandle.fromJson(response.data!),
response.message,
);
}
return ApiResponse.fail(response.message ?? '获取当前K线失败');
}
/// 获取支持的周期列表
Future<ApiResponse<List<String>>> fetchIntervals() async {
final response = await _client.get<Map<String, dynamic>>(
ApiEndpoints.klineIntervals,
);
if (response.success && response.data != null) {
final list = response.data!['list'] as List? ?? [];
return ApiResponse.success(list.cast<String>(), response.message);
}
return ApiResponse.fail(response.message ?? '获取周期列表失败');
}
}

135
flutter_monisuo/lib/data/services/kline_websocket_service.dart
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import 'dart:async';
import 'dart:convert';
import 'package:stomp_dart_client/stomp_dart_client.dart';
import '../../core/constants/api_endpoints.dart';
import '../models/kline_candle.dart';
/// K线 WebSocket 服务（STOMP 协议）
class KlineWebSocketService {
StompClient? _stompClient;
final Map<String, dynamic> _subscriptions = {};
final Map<String, StreamController<KlineCandle>> _controllers = {};
bool _isConnected = false;
bool _isConnecting = false;
int _reconnectDelay = 2000; // 初始重连延迟
static const int _maxReconnectDelay = 30000;
/// 订阅某个币种的K线数据
Stream<KlineCandle> subscribe(String coinCode) {
final key = coinCode.toUpperCase();
if (!_controllers.containsKey(key)) {
_controllers[key] = StreamController<KlineCandle>.broadcast();
}
_doSubscribe(key);
return _controllers[key]!.stream;
}
/// 取消订阅
void unsubscribe(String coinCode) {
final key = coinCode.toUpperCase();
_subscriptions[key]?.call();
_subscriptions.remove(key);
}
/// 连接状态
bool get isConnected => _isConnected;
/// 连接 WebSocket
void connect() {
if (_isConnecting || _isConnected) return;
_isConnecting = true;
final wsUrl = ApiEndpoints.klineWs;
_stompClient = StompClient(
config: StompConfig(
url: wsUrl,
onConnect: _onConnect,
onDisconnect: _onDisconnect,
onStompError: _onError,
onWebSocketError: _onError,
reconnectDelay: const Duration(milliseconds: 5000),
heartbeatIncoming: const Duration(seconds: 20),
heartbeatOutgoing: const Duration(seconds: 20),
),
);
_stompClient!.activate();
}
/// 断开连接
void disconnect() {
_isConnecting = false;
_stompClient?.deactivate();
_stompClient = null;
_isConnected = false;
_subscriptions.clear();
}
void _onConnect(StompFrame frame) {
_isConnected = true;
_isConnecting = false;
_reconnectDelay = 2000; // 重置重连延迟
// 重新订阅所有已注册的币种
for (final key in _controllers.keys) {
_doSubscribe(key);
}
}
void _onDisconnect(StompFrame? frame) {
_isConnected = false;
_isConnecting = false;
_scheduleReconnect();
}
void _onError(dynamic error) {
_isConnected = false;
_isConnecting = false;
_scheduleReconnect();
}
void _scheduleReconnect() {
Future.delayed(Duration(milliseconds: _reconnectDelay), () {
if (!_isConnected && !_isConnecting) {
_reconnectDelay = (_reconnectDelay * 2).clamp(2000, _maxReconnectDelay);
connect();
}
});
}
void _doSubscribe(String coinCode) {
if (_stompClient == null || !_isConnected) {
connect(); // 触发连接，连接成功后会自动重新订阅
return;
}
// 避免重复订阅
if (_subscriptions.containsKey(coinCode)) return;
final dest = '/topic/kline/$coinCode';
final sub = _stompClient!.subscribe(
destination: dest,
callback: (StompFrame frame) {
if (frame.body != null) {
try {
final json = jsonDecode(frame.body!) as Map<String, dynamic>;
final candle = KlineCandle.fromJson(json);
_controllers[coinCode]?.add(candle);
} catch (_) {}
}
},
);
_subscriptions[coinCode] = sub;
}
/// 释放资源
void dispose() {
disconnect();
for (final controller in _controllers.values) {
controller.close();
}
_controllers.clear();
}
}