SAF初步修改，等待验证

2026-07-04 20:57:29 +08:00
parent bdf24f6790
commit c5a85e05a3
8 changed files with 432 additions and 53 deletions
@@ -4,15 +4,17 @@ import 'dart:developer' as dev;
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_svg/flutter_svg.dart';
-import 'package:permission_handler/permission_handler.dart';
 import 'package:sqflite/sqflite.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:path/path.dart' as path;
 import 'package:device_info_plus/device_info_plus.dart';
+import 'package:shared_preferences/shared_preferences.dart';

 import '../models/device_matching.dart';
 import '../utils/charge_utils.dart';
 import '../widgets/charge_detail_page.dart';
+import '../services/saf_storage_service.dart';
+import '../models/saf_permission_state.dart';

 // --- 潘通色定义 ---
 const Color kHealthGreen = Color(0xFF00B140);
@@ -40,23 +42,24 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
  double _maxVolt = 0;
  double _minVolt = 0;
  bool _hasData = false;
-  final String _filePath = '/storage/emulated/0/mbattery_charger/';

  // ---------- 趋势图数据 ----------
  List<Map<String, dynamic>> _trendData = [];

  // ---------- 充电状态 ----------
  bool _isCharging = false;
-  String _chargeType = ''; // "EPP", "PPS", "SDP", "无线", "MZ_EPP" 等
+  String _chargeType = '';
  double _chargePower = 0.0;
  double _chargeVolt = 0.0;
  double _chargeCurr = 0.0;
  int? _wiredLevel;
  bool _isWireless = false;
-
-  // 🟢 1.3.0-dev.3: 充电开始时间（UTC），用于时间窗口判断
  DateTime? _chargingStartTime;

+  // ---------- SAF 状态 ----------
+  final SafStorageService _safService = SafStorageService();
+  SafPermissionState _safState = SafPermissionState.unauthorized;
+
  // 动画控制
  late AnimationController _chargeAnimationController;
  late Animation<double> _bottomSlide;
@@ -150,22 +153,25 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
    }
  }

-  // ---------- 扫描目录 ----------
+  // ---------- 扫描目录 (SAF 模式) ----------
  Future<void> _scanAndUpdateDB() async {
-    Directory dir = Directory(_filePath);
-    if (!await dir.exists()) return;
+    // 检查 SAF 授权状态
+    _safState = await _safService.getPermissionState();
+    if (_safState != SafPermissionState.authorized) {
+      _showSafAuthorizationDialog();
+      return;
+    }

-    List<FileSystemEntity> files = await dir.list().toList();
-    RegExp filePattern = RegExp(r'mbattery_charger_log_(\d{4}_\d{2}_\d{2})$');
+    try {
+      final files = await _safService.listFiles();
+      RegExp filePattern = RegExp(r'mbattery_charger_log_(\d{4}_\d{2}_\d{2})$');

-    for (FileSystemEntity entity in files) {
-      if (entity is File) {
-        String fileName = path.basename(entity.path);
+      for (String fileName in files) {
        Match? match = filePattern.firstMatch(fileName);
        if (match != null) {
          String dateStr = match.group(1)!.replaceAll('_', '-');
          try {
-            List<String> lines = await entity.readAsLines();
+            List<String> lines = await _safService.readLogFile(fileName);
            if (lines.isEmpty) continue;

            List<String> validLines = lines
@@ -195,10 +201,12 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
          } catch (_) {}
        }
      }
+    } catch (e) {
+      dev.log('[_scanAndUpdateDB] ❌ 扫描异常: $e', name: 'BatteryHealth');
    }
  }

-  // ---------- 1.3.0-dev.1: 使用 UTC 生成文件名 ----------
+  // ---------- UTC 文件名 ----------
  String getTodayFileName() {
    DateTime nowUtc = DateTime.now().toUtc();
    String year = nowUtc.year.toString();
@@ -208,7 +216,6 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
  }

  // ---------- 时间戳工具方法 ----------
-  /// 解析日志行中的时间戳，强制解析为 UTC
  DateTime? _parseLogTimestamp(String line) {
    RegExp reg = RegExp(r'\[(\d{4}-\d{2}-\d{2}) (\d{2}:\d{2}:\d{2})\]');
    Match? match = reg.firstMatch(line);
@@ -231,20 +238,81 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
    }
  }

-  /// 🟢 1.3.0-dev.3: 时间窗口以插入时刻为基准，只向前看
  bool _isLogTimestampValid(DateTime? logTime) {
    if (logTime == null) return false;
    if (_chargingStartTime == null) {
-      // 边缘情况：回退到当前时间 ±3 分钟
      DateTime nowUtc = DateTime.now().toUtc();
      Duration diff = nowUtc.difference(logTime);
      return diff.abs().inMinutes <= 3;
    }
-    // 日志时间必须在 [充电开始时间, 充电开始时间 + 3 分钟] 范围内
    DateTime endTime = _chargingStartTime!.add(const Duration(minutes: 3));
    return logTime.isAfter(_chargingStartTime!) && logTime.isBefore(endTime);
  }

+  // ---------- SAF 授权引导 ----------
+  void _showSafAuthorizationDialog() {
+    // 避免重复弹窗
+    if (!mounted) return;
+
+    showDialog(
+      context: context,
+      barrierDismissible: false,
+      builder: (context) => AlertDialog(
+        title: const Text('需要文件夹访问权限'),
+        content: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: const [
+            Text('请授权访问日志文件夹，以读取电池数据。'),
+            SizedBox(height: 8),
+            Text(
+              '目标路径：\n/storage/emulated/0/mbattery_charger/',
+              style: TextStyle(fontSize: 12, color: Colors.grey),
+            ),
+            SizedBox(height: 8),
+            Text('点击"选择文件夹"后，请在系统文件管理器中找到并选中上述文件夹。'),
+          ],
+        ),
+        actions: [
+          TextButton(
+            onPressed: () {
+              Navigator.pop(context);
+              // 用户取消后，保持当前状态，但不阻塞后续操作
+              setState(() {
+                _safState = SafPermissionState.denied;
+              });
+            },
+            child: const Text('取消'),
+          ),
+          ElevatedButton(
+            onPressed: () async {
+              final ctx = context; // 保存引用
+              Navigator.pop(ctx);
+              final result = await _safService.requestPermission();
+              if (result.success) {
+                if (!mounted) return; // 先检查 State 是否还在
+                setState(() {
+                  _safState = SafPermissionState.authorized;
+                });
+                readBatteryCapacity();
+              } else {
+                if (!mounted) return;
+                ScaffoldMessenger.of(ctx).showSnackBar(
+                  SnackBar(
+                    content: Text(result.errorMessage ?? '授权失败，请重试'),
+                    backgroundColor: Colors.red,
+                  ),
+                );
+                // 重新弹窗
+                _showSafAuthorizationDialog();
+              }
+            },
+          ),
+        ],
+      ),
+    );
+  }
+
  // ---------- 核心：系统API定调 ----------
  void _applySystemChargeState(bool isCharging, String systemChargeType) {
    dev.log(
@@ -263,12 +331,11 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
        _chargeVolt = 0.0;
        _chargeCurr = 0.0;
        _wiredLevel = null;
-        _chargingStartTime = null; // 🟢 清空开始时间
+        _chargingStartTime = null;
        _updateChargeState();
        return;
      }

-      // 🟢 1.3.0-dev.3: 记录充电开始时刻（仅当从断开状态变为充电状态时）
      if (_chargingStartTime == null) {
        _chargingStartTime = DateTime.now().toUtc();
        dev.log(
@@ -297,7 +364,6 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
        _isWireless = false;
        _chargeType = "SDP";
      } else {
-        // UNKNOWN 时清空旧类型，等待日志修正
        dev.log(
          '[_applySystemChargeState] ⚠️ 未知类型: $systemChargeType，清空类型等待日志',
          name: 'BatteryHealth',
@@ -324,7 +390,6 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
      name: 'BatteryHealth',
    );

-    // ---------- 1. 收集所有在有效时间窗口内的数据行 ----------
    List<Map<String, dynamic>> validLines = [];
    for (String line in lines) {
      DateTime? timestamp = _parseLogTimestamp(line);
@@ -349,10 +414,8 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
      return;
    }

-    // 按时间戳排序（从新到旧）
    validLines.sort((a, b) => b['timestamp'].compareTo(a['timestamp']));

-    // 取最新的一条
    Map<String, dynamic> latest = validLines.first;
    String latestLine = latest['line'];
    String latestType = latest['type'];
@@ -363,7 +426,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
      name: 'BatteryHealth',
    );

-    // ---------- 2. 无线处理 ----------
+    // ---------- 无线 ----------
    if (latestType == 'wls') {
      dev.log('[_parseChargeDataFromLog] 处理无线数据', name: 'BatteryHealth');

@@ -390,7 +453,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
      return;
    }

-    // ---------- 3. 有线处理 ----------
+    // ---------- 有线 ----------
    if (latestType == 'usb') {
      dev.log('[_parseChargeDataFromLog] 处理有线数据', name: 'BatteryHealth');

@@ -411,7 +474,6 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>

        _isWireless = false;

-        // 🟢 1.3.0-dev.2: real_type 优先级最高
        if (realType != null && realType == "PPS") {
          _chargeType = "PPS";
        } else if (realType != null &&
@@ -438,14 +500,13 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
    }
  }

-  // 🟢 1.3.0-dev.3: 增加超时保护
+  // ---------- SAF 文件读取 ----------
  Future<void> _fetchChargeDataFromLog() async {
    if (!_isCharging) {
      dev.log('[_fetchChargeDataFromLog] 未充电，跳过读取', name: 'BatteryHealth');
      return;
    }

-    // 超时检查：如果插入超过 5 分钟还没读到数据，不再频繁报错
    if (_chargingStartTime != null) {
      Duration elapsed = DateTime.now().toUtc().difference(_chargingStartTime!);
      if (elapsed.inMinutes > 5) {
@@ -457,24 +518,35 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
      }
    }

-    String fullPath = _filePath + getTodayFileName();
-    dev.log('[_fetchChargeDataFromLog] 尝试读取: $fullPath', name: 'BatteryHealth');
+    // 检查 SAF 授权
+    _safState = await _safService.getPermissionState();
+    if (_safState != SafPermissionState.authorized) {
+      if (mounted) _showSafAuthorizationDialog();
+      return;
+    }

-    File file = File(fullPath);
-    if (!await file.exists()) {
+    final fileName = getTodayFileName();
+    dev.log('[_fetchChargeDataFromLog] 尝试读取: $fileName', name: 'BatteryHealth');
+
+    final exists = await _safService.logFileExists(fileName);
+    if (!exists) {
      dev.log(
-        '[_fetchChargeDataFromLog] ⚠️ 文件不存在: $fullPath',
+        '[_fetchChargeDataFromLog] ⚠️ 文件不存在: $fileName',
        name: 'BatteryHealth',
      );
      return;
    }
+
    try {
-      List<String> lines = await file.readAsLines();
+      final lines = await _safService.readLogFile(fileName);
+      if (lines.isEmpty) {
+        dev.log('[_fetchChargeDataFromLog] 文件为空', name: 'BatteryHealth');
+        return;
+      }
      dev.log(
        '[_fetchChargeDataFromLog] ✅ 读取成功，共 ${lines.length} 行',
        name: 'BatteryHealth',
      );
-      if (lines.isEmpty) return;
      _parseChargeDataFromLog(lines);
    } catch (e) {
      dev.log('[_fetchChargeDataFromLog] ❌ 读取异常: $e', name: 'BatteryHealth');
@@ -535,19 +607,20 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>

  // ---------- 读取当前数据 ----------
  Future<void> readBatteryCapacity() async {
-    var status = await Permission.manageExternalStorage.request();
-    if (!status.isGranted) {
-      setState(() => _hasData = false);
+    // 检查 SAF 授权
+    _safState = await _safService.getPermissionState();
+    if (_safState != SafPermissionState.authorized) {
+      if (mounted) _showSafAuthorizationDialog();
      return;
    }

    await _getDeviceInfo();
    await _scanAndUpdateDB();

-    String fullPath = _filePath + getTodayFileName();
-    File file = File(fullPath);
+    final fileName = getTodayFileName();
+    final exists = await _safService.logFileExists(fileName);

-    if (!await file.exists()) {
+    if (!exists) {
      List<Map<String, dynamic>> recent = await _queryRecentData(1);
      if (recent.isNotEmpty) {
        setState(() {
@@ -567,7 +640,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
    }

    try {
-      List<String> lines = await file.readAsLines();
+      final lines = await _safService.readLogFile(fileName);
      if (lines.isEmpty) {
        setState(() => _hasData = false);
        if (_isCharging) _fetchChargeDataFromLog();
@@ -700,8 +773,16 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
      }
    });

-    WidgetsBinding.instance.addPostFrameCallback((_) {
-      readBatteryCapacity();
+    // 延迟初始化 SAF 并读取数据
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      await _safService.init();
+      _safState = await _safService.getPermissionState();
+      if (_safState == SafPermissionState.unauthorized ||
+          _safState == SafPermissionState.expired) {
+        if (mounted) _showSafAuthorizationDialog();
+      } else {
+        readBatteryCapacity();
+      }
    });
  }

@@ -799,9 +880,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
                      fontSize: 40,
                      fontWeight: FontWeight.w500,
                      height: 1.0,
-                      color: healthPercent < 70
-                          ? Colors.red
-                          : Colors.black, // 🟢 动态颜色
+                      color: healthPercent < 70 ? Colors.red : Colors.black,
                    ),
                  ),
                  const SizedBox(width: 2),
@@ -813,7 +892,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
                      height: 1.0,
                      color: healthPercent < 70
                          ? Colors.red
-                          : Colors.grey.shade600, // 🟢 动态颜色
+                          : Colors.grey.shade600,
                    ),
                  ),
                ],
@@ -1047,7 +1126,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
                                } else if (value >= 70) {
                                  barColor = kHealthYellow;
                                } else {
-                                  barColor = Colors.red; // 🟢 小于 70 显示红色
+                                  barColor = Colors.red;
                                }
                              } else {
                                barColor = Colors.grey.shade300;