79 lines
1.8 KiB
Dart
79 lines
1.8 KiB
Dart
import 'package:flutter/material.dart';
|
||
import '../data/models/coin.dart';
|
||
import '../data/services/market_service.dart';
|
||
|
||
/// 行情状态管理
|
||
class MarketProvider extends ChangeNotifier {
|
||
final MarketService _marketService;
|
||
|
||
List<Coin> _allCoins = [];
|
||
bool _isLoading = false;
|
||
String? _error;
|
||
bool _coinsLoaded = false;
|
||
|
||
MarketProvider(this._marketService);
|
||
|
||
// Getters
|
||
List<Coin> get allCoins => _allCoins;
|
||
bool get isLoading => _isLoading;
|
||
String? get error => _error;
|
||
|
||
/// BTC 和 ETH（上半区展示）
|
||
List<Coin> get featuredCoins =>
|
||
_allCoins.where((c) => c.code == 'BTC' || c.code == 'ETH').toList();
|
||
|
||
/// 排除 BTC、ETH、USDT 的代币列表（下半区展示）
|
||
List<Coin> get otherCoins => _allCoins
|
||
.where((c) => !{'BTC', 'ETH', 'USDT'}.contains(c.code))
|
||
.toList();
|
||
|
||
/// 加载币种列表
|
||
Future<void> loadCoins({bool force = false}) async {
|
||
if (_coinsLoaded && !force && _allCoins.isNotEmpty) {
|
||
return;
|
||
}
|
||
|
||
_isLoading = true;
|
||
_error = null;
|
||
notifyListeners();
|
||
|
||
try {
|
||
final response = await _marketService.getCoinList();
|
||
|
||
if (response.success) {
|
||
_allCoins = response.data ?? [];
|
||
_coinsLoaded = true;
|
||
} else {
|
||
_error = response.message;
|
||
}
|
||
} catch (e) {
|
||
_error = '加载失败: $e';
|
||
}
|
||
|
||
_isLoading = false;
|
||
notifyListeners();
|
||
}
|
||
|
||
/// 根据代码获取币种
|
||
Coin? getCoinByCode(String code) {
|
||
try {
|
||
return _allCoins.firstWhere((c) => c.code == code);
|
||
} catch (_) {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
/// 刷新
|
||
Future<void> refresh() async {
|
||
await loadCoins(force: true);
|
||
}
|
||
|
||
/// 重置加载状态（用于退出登录时）
|
||
void resetLoadState() {
|
||
_coinsLoaded = false;
|
||
_allCoins = [];
|
||
_error = null;
|
||
notifyListeners();
|
||
}
|
||
}
|