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398 lines
15 KiB
398 lines
15 KiB
import 'dart:async';
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import 'package:device_plugin_interface/device_plugin_interface.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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import 'package:get/get.dart';
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import '../../../core/theme/app_palette.dart';
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import '../../../devices/device_hub.dart';
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import '../../../devices/device_vendors.dart';
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import '../../../routes/app_routes.dart';
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import '../../main_tab/controllers/main_tab_controller.dart';
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/// EaiCar（AI车载香薰）的扫描 / 连接页——走 [DeviceHub] 里的 EaiCar 插件。
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///
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/// 与支架那页结构一致，两点不同：
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/// 1. **不需要后台自启动授权**：EaiCar 的连接是纯 GATT，没有向系统注册
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/// 「设备靠近就唤醒本应用」那种后台扫连，不构成自启动行为。
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/// 2. 卡片上多显示一行 MAC —— 它来自 BLE 广播，是服务端确权的依据，
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/// 连不上时看一眼就知道是不是扫到了别的设备。
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class EaiCarScanView extends StatefulWidget {
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const EaiCarScanView({super.key});
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@override
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State<EaiCarScanView> createState() => _EaiCarScanViewState();
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}
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class _EaiCarScanViewState extends State<EaiCarScanView> {
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DevicePlugin get _plugin => DeviceHub.to.plugin(DeviceVendors.eaicar)!;
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final RxList<DiscoveredDevice> _scanned = <DiscoveredDevice>[].obs;
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final RxBool _isScanning = false.obs;
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/// 附近**所有** BLE 设备（含没命中判定的），按 id 去重。
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/// 只在一台都没扫到时给人看——「扫不到」这个故障，
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/// 不摊开设备到底播了什么就只能靠反复出包猜。
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final RxMap<String, Map<String, Object?>> _nearby =
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<String, Map<String, Object?>>{}.obs;
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final RxBool _showDiag = false.obs;
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/// 扫描起不来时的原因。**必须显示出来**：第一版失败是静默的，
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/// 界面只会一直转圈，分不清「没扫到设备」和「压根没扫起来」。
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final RxnString _scanError = RxnString();
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StreamSubscription<DevicePluginEvent>? _sub;
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bool _connecting = false;
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@override
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void initState() {
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super.initState();
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_sub = _plugin.eventStream.listen((e) {
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switch (e.type) {
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case DevicePluginEventType.scanStarted:
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_isScanning.value = true;
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break;
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case DevicePluginEventType.scanStopped:
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_isScanning.value = false;
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break;
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case DevicePluginEventType.deviceDiscovered:
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final d = e.discovered;
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if (d == null || d.id.isEmpty) break;
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// 按 id 去重累积：BLE 扫描会对同一台设备反复上报
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final i = _scanned.indexWhere((x) => x.id == d.id);
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if (i >= 0) {
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_scanned[i] = d;
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} else {
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_scanned.add(d);
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}
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break;
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case DevicePluginEventType.customEvent:
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// 厂商插件转发的扫描诊断（业务层不能直接 import 厂商目录）
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if (e.customKey == 'eaicar.scan_diagnostic') {
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final d = e.customPayload;
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if (d is Map<String, Object?>) {
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final id = '${d['id']}';
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if (id.isNotEmpty) _nearby[id] = d;
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}
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}
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break;
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case DevicePluginEventType.error:
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_scanError.value = e.errorMessage ?? e.errorCode;
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_isScanning.value = false;
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break;
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default:
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break;
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}
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});
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WidgetsBinding.instance.addPostFrameCallback((_) => _startScan());
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}
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Future<void> _startScan() async {
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_scanned.clear();
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_nearby.clear();
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_scanError.value = null;
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if (!await _plugin.ensureReady()) return;
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await _plugin.startScan();
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}
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@override
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void dispose() {
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_sub?.cancel();
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_plugin.stopScan();
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super.dispose();
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}
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Future<void> _connect(DiscoveredDevice d) async {
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if (_connecting) return;
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setState(() => _connecting = true);
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String? failReason;
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try {
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await _plugin.connect(
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d.id,
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// MAC 只在广播里有，连上就拿不到了。这里带过去给确权用，
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// 免得连上之后再回头找。
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options: DeviceConnectOptions(extra: {'mac': d.metadata['mac']}),
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);
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await _plugin.rememberDevice(d);
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} on DeviceException catch (e) {
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failReason = e.message ?? e.code;
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} catch (e) {
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failReason = '$e';
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}
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if (!mounted) return;
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setState(() => _connecting = false);
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if (failReason == null) {
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Get.snackbar('eaicarConnected'.tr, d.name,
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snackPosition: SnackPosition.TOP,
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duration: const Duration(seconds: 2));
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// BLE 通了不等于听得见：AI 回复和音乐走的是**经典蓝牙 A2DP**（见落地文档 7.0）。
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// 没接上时提示一次，别让用户以为"连上了却没声音"是坏了。
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unawaited(_hintClassicAudioIfNeeded(d.name));
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Get.offAllNamed(Routes.home);
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (Get.isRegistered<MainTabController>()) {
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MainTabController.to.showDeviceAfterConnect();
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}
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});
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} else {
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// ⚠️ 失败原因**留在页面上**，不能只弹一下就没了：
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// 这些信息（设备实际暴露了哪些服务、握手卡在哪条命令）是排查的全部依据，
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// snackbar 几秒就消失，用户根本来不及看清更别说转述。
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_scanError.value = failReason;
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Get.snackbar('eaicarConnectFailed'.tr, failReason,
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snackPosition: SnackPosition.TOP,
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duration: const Duration(seconds: 5));
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}
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}
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/// 经典蓝牙没接上就提示一次。
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///
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/// - Android：插件已经在连接后自动 `createBond` 试过一次，这里只兜底提示
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/// - iOS：**没有**发起经典蓝牙配对的公开 API，只能引导用户去系统设置
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Future<void> _hintClassicAudioIfNeeded(String name) async {
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try {
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final r = await _plugin.activeSession
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?.invokeFeature('eaicar.a2dp_status');
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if (r == null || r['connected'] == true) return;
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Get.snackbar(
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'eaicarA2dpTitle'.tr,
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'eaicarA2dpHint'.tr.replaceAll('@name', name),
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snackPosition: SnackPosition.TOP,
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duration: const Duration(seconds: 6),
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);
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} catch (_) {
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// 查不到就不提示——这只是体验提示，不该把连接流程搅黄
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}
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}
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@override
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Widget build(BuildContext context) {
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final bool isDark = Theme.of(context).brightness == Brightness.dark;
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return Scaffold(
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backgroundColor: AppPalette.background(isDark),
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appBar: AppBar(
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backgroundColor: AppPalette.background(isDark),
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elevation: 0,
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title: Text('catCarAroma'.tr),
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actions: [
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Obx(() => _isScanning.value
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? Padding(
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padding: EdgeInsets.only(right: 16.w),
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child: Center(
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child: SizedBox(
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width: 18.w,
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height: 18.w,
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child: const CircularProgressIndicator(strokeWidth: 2),
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),
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),
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)
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: IconButton(
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icon: const Icon(Icons.refresh),
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onPressed: _startScan,
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)),
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],
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),
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body: _connecting
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? Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const CircularProgressIndicator(),
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SizedBox(height: 16.h),
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Text('eaicarConnecting'.tr),
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],
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),
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)
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: Obx(() {
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final list = _scanned;
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if (list.isEmpty) return _empty(isDark);
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return ListView.separated(
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padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 16.h),
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itemCount: list.length,
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separatorBuilder: (_, __) => SizedBox(height: 12.h),
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itemBuilder: (context, i) => _card(list[i], isDark),
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);
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}),
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);
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}
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Widget _empty(bool isDark) => Center(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(Icons.bluetooth_searching,
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size: 56.sp, color: AppPalette.brand300),
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SizedBox(height: 12.h),
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Obx(() => Text(
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_isScanning.value
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? 'eaicarSearching'.tr
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: 'eaicarNotFound'.tr,
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style: TextStyle(
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fontSize: 15.sp,
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color: AppPalette.textSecondary(isDark)),
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)),
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SizedBox(height: 6.h),
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Text(
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'eaicarScanHint'.tr,
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textAlign: TextAlign.center,
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style: TextStyle(
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fontSize: 12.sp, color: AppPalette.textHint(isDark)),
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),
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SizedBox(height: 20.h),
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_diagnostics(isDark),
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],
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),
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);
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/// 诊断面板：把附近扫到的 BLE 设备摊开。
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///
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/// 判据（厂商 ID 0x8505 / 名字含 eaicar）对不对，看这里最快：
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/// - 列表里根本没有目标设备 → 设备没在播，或不在范围内
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/// - 有、但 mfg 那栏的厂商 ID 不是 0x8505 → 判据要按实际值改
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/// - 有、厂商 ID 对但长度不足 22 → 广播段布局和文档对不上
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Widget _diagnostics(bool isDark) => Obx(() {
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final list = _nearby.values.toList();
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final err = _scanError.value;
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// ⚠️ 0 台也要显示。「附近 0 台」和「面板不出现」是两回事：
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// 前者说明扫描跑了但什么都没收到，后者说明扫描压根没起来。
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return Padding(
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padding: EdgeInsets.symmetric(horizontal: 24.w),
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child: Column(
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children: [
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if (err != null)
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Container(
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width: double.infinity,
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margin: EdgeInsets.only(bottom: 8.h),
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padding: EdgeInsets.all(10.w),
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decoration: BoxDecoration(
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color: Colors.red.withValues(alpha: 0.08),
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borderRadius: BorderRadius.circular(8.r),
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),
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child: SelectableText('失败详情：$err',
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style: TextStyle(fontSize: 11.sp, color: Colors.red)),
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),
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TextButton.icon(
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onPressed: () => _showDiag.value = !_showDiag.value,
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icon: Icon(
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_showDiag.value ? Icons.expand_less : Icons.expand_more,
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size: 18.sp),
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label: Text('附近 ${list.length} 台蓝牙设备',
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style: TextStyle(fontSize: 12.sp)),
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),
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if (_showDiag.value && list.isEmpty)
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Text('一台都没收到 —— 蓝牙可能没开、权限被拒，或周围确实没有设备',
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textAlign: TextAlign.center,
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style: TextStyle(
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fontSize: 11.sp, color: AppPalette.textHint(isDark))),
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if (_showDiag.value && list.isNotEmpty)
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Container(
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constraints: BoxConstraints(maxHeight: 260.h),
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padding: EdgeInsets.all(10.w),
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decoration: BoxDecoration(
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color: AppPalette.surface(isDark),
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borderRadius: BorderRadius.circular(10.r),
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border: Border.all(color: AppPalette.border(isDark)),
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),
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child: ListView.builder(
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shrinkWrap: true,
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itemCount: list.length,
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itemBuilder: (_, i) {
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final d = list[i];
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final matched = d['matched'] == true;
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final name = '${d['name']}';
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return Padding(
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padding: EdgeInsets.symmetric(vertical: 4.h),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'${matched ? '✓ ' : ''}'
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'${name.isEmpty ? '(无名)' : name} ${d['rssi']}dBm',
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style: TextStyle(
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fontSize: 11.sp,
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fontWeight: matched
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? FontWeight.w700
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: FontWeight.w400,
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color: AppPalette.textPrimary(isDark),
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),
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),
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// 可长按复制：MAC 解错时要把这串原始字节发出来分析
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SelectableText(
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'mfg=${d['mfg']}\n'
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'解出MAC=${d['parsedMac']}\n'
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'svc=${d['services']}',
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style: TextStyle(
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fontSize: 10.sp,
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color: AppPalette.textHint(isDark)),
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),
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],
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),
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);
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},
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),
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),
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],
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),
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);
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});
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Widget _card(DiscoveredDevice d, bool isDark) {
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final mac = '${d.metadata['mac'] ?? ''}';
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return GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: () => _connect(d),
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child: Container(
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padding: EdgeInsets.all(14.w),
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decoration: BoxDecoration(
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color: AppPalette.surface(isDark),
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borderRadius: BorderRadius.circular(14.r),
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border: Border.all(color: AppPalette.border(isDark)),
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),
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child: Row(
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children: [
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Icon(Icons.air, size: 26.sp, color: AppPalette.brand500),
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SizedBox(width: 12.w),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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d.name,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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style: TextStyle(
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fontSize: 15.sp,
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fontWeight: FontWeight.w600,
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color: AppPalette.textPrimary(isDark),
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),
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),
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if (mac.isNotEmpty) ...[
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SizedBox(height: 3.h),
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Text(
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mac,
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style: TextStyle(
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fontSize: 11.sp,
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color: AppPalette.textHint(isDark),
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),
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),
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],
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],
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),
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),
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if (d.rssi != null)
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Text(
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'${d.rssi} dBm',
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style: TextStyle(
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fontSize: 11.sp, color: AppPalette.textHint(isDark)),
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),
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SizedBox(width: 6.w),
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Icon(Icons.chevron_right,
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size: 20.sp, color: AppPalette.textHint(isDark)),
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],
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),
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),
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);
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}
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}
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