feat: 添加定时关闭功能

lib/services/shutdown_timer_service.dart

@@ -0,0 +1,140 @@
+// 定时关闭服务
+import 'dart:async';
+import 'dart:io';
+import 'package:flutter/material.dart';
+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
+
+import '../plugin/pl_player/controller.dart';
+
+class ShutdownTimerService {
+  static final ShutdownTimerService _instance =
+      ShutdownTimerService._internal();
+  Timer? _shutdownTimer;
+  Timer? _autoCloseDialogTimer;
+  //定时退出
+  int scheduledExitInMinutes = -1;
+  bool exitApp = false;
+  bool waitForPlayingCompleted = false;
+  bool isWaiting = false;
+
+  factory ShutdownTimerService() => _instance;
+
+  ShutdownTimerService._internal();
+
+  void startShutdownTimer() {
+    cancelShutdownTimer(); // Cancel any previous timer
+    if (scheduledExitInMinutes == -1) {
+      //使用toast提示用户已取消
+      SmartDialog.showToast("取消定时关闭");
+      return;
+    }
+    SmartDialog.showToast("设置 $scheduledExitInMinutes 分钟后定时关闭");
+    _shutdownTimer = Timer(Duration(minutes: scheduledExitInMinutes),
+        () => _shutdownDecider());
+  }
+
+  void _showTimeUpButPauseDialog() {
+    SmartDialog.show(
+      builder: (BuildContext dialogContext) {
+        return AlertDialog(
+          title: const Text('定时关闭'),
+          content: const Text('时间到啦！'),
+          actions: <Widget>[
+            TextButton(
+              child: const Text('确认'),
+              onPressed: () {
+                cancelShutdownTimer();
+                SmartDialog.dismiss();
+              },
+            ),
+          ],
+        );
+      },
+    );
+  }
+
+  void _showShutdownDialog() {
+    SmartDialog.show(
+      builder: (BuildContext dialogContext) {
+        // Start the 10-second timer to auto close the dialog
+        _autoCloseDialogTimer?.cancel();
+        _autoCloseDialogTimer = Timer(const Duration(seconds: 10), () {
+          SmartDialog.dismiss();// Close the dialog
+          _executeShutdown();
+        });
+        return AlertDialog(
+          title: const Text('定时关闭'),
+          content: const Text('将在10秒后执行，是否需要取消？'),
+          actions: <Widget>[
+            TextButton(
+              child: const Text('取消关闭'),
+              onPressed: () {
+                _autoCloseDialogTimer?.cancel(); // Cancel the auto-close timer
+                cancelShutdownTimer(); // Cancel the shutdown timer
+                SmartDialog.dismiss(); // Close the dialog
+              },
+            ),
+          ],
+        );
+      },
+    ).then((_) {
+      // Cleanup when the dialog is dismissed
+      _autoCloseDialogTimer?.cancel();
+    });
+  }
+
+  void _shutdownDecider() {
+    if (exitApp && !waitForPlayingCompleted) {
+      _showShutdownDialog();
+      return;
+    }
+    PlPlayerController plPlayerController = PlPlayerController.getInstance();
+    if (!exitApp && !waitForPlayingCompleted) {
+      if (!plPlayerController.playerStatus.playing) {
+        //仅提示用户
+        _showTimeUpButPauseDialog();
+      } else {
+        _showShutdownDialog();
+      }
+      return;
+    }
+    //waitForPlayingCompleted
+    if (!plPlayerController.playerStatus.playing) {
+      _showShutdownDialog();
+      return;
+    }
+    SmartDialog.showToast("定时关闭时间已到，等待当前视频播放完成");
+    //监听播放完成
+    //该方法依赖耦合实现，不够优雅
+    isWaiting = true;
+  }
+  void handleWaitingFinished(){
+    if(isWaiting){
+      _showShutdownDialog();
+      isWaiting = false;
+    }
+  }
+  void _executeShutdown() {
+    if (exitApp) {
+      //退出app
+      exit(0);
+    } else {
+      //暂停播放
+      PlPlayerController plPlayerController = PlPlayerController.getInstance();
+      if (plPlayerController.playerStatus.playing) {
+        plPlayerController.pause();
+        waitForPlayingCompleted = true;
+        SmartDialog.showToast("已暂停播放");
+      } else {
+        SmartDialog.showToast("当前未播放");
+      }
+    }
+  }
+
+  void cancelShutdownTimer() {
+    isWaiting = false;
+    _shutdownTimer?.cancel();
+  }
+}
+
+final shutdownTimerService = ShutdownTimerService();