Force routing without context - flutter

Question

am working on chat app , now am stuck on the idea of , if one of the two users left the page i wanna force the other user also to leave the page and back to home screen , i tried many things , boolean , conditions , will pop , nothing work , how can i implement a function to do this job , am using flutter , much appreciate .
i tried using boolean to set a condition to check if user exist , i tried to use will pop , i saw a couple of articles bout it , i even tried to set timer to force the second user to leave , but nothing happened , the problem is there's no action from the other user that make him leave the page , with or without on press , while the first user did the action and pressed the button to leave .
this is the button in the home page who do logic to match through firebase
child: ElevatedButton(
onPressed: () async {
var res = await FirebaseFirestore.instance
.doc(
'match/$_currentValue1$_currentValue2$_currentThumbValue')
.get();
var value = res.exists;
print('RESULT = $value');
/// If Code Is Not Exist
try {
if (value == false) {
/// Create Code In Match Document
await FirebaseFirestore.instance
.collection('match')
.doc('$_currentValue1$_currentValue2$_currentThumbValue')
.set({
'user1Id': FirebaseAuth.instance.currentUser!.uid,
'user1Name': userInfo['displayName'] ?? 'username',
'user2Id': '',
'user2Name': '',
});
print('Match Created By ${userInfo['displayName']}');
/// Create Code Reference In Real Time
await codeRef.set({
'code': '$_currentValue1$_currentValue2$_currentThumbValue',
'user1Id': FirebaseAuth.instance.currentUser!.uid,
'user1Name': userInfo['displayName'] ?? 'username',
'user2Id': '',
'user2Name': '',
});
/// Timer To Delete Code If No Match Found
var counter = 10;
Timer.periodic(const Duration(seconds: 1),
(timer) async {
setState(() {
isMatchVisible = false;
});
print(timer.tick);
print('Data Value During Countdown : $value');
counter--;
/// Check If User2 Exist Im Match Document
DocumentSnapshot documentSnapshot =
await FirebaseFirestore.instance
.collection('match')
.doc('$_currentValue1$_currentValue2$_currentThumbValue')
.get();
///
if (documentSnapshot.get('user2Id') != '') {
timer.cancel();
var goToPageUser1 = 2;
Timer.periodic(const Duration(seconds: 2),
(timer) async {
goToPageUser1--;
if (goToPageUser1 == 0) {
timer.cancel();
/// Go To Chat Screen
await Get.toNamed(
'/ChatScreen',
arguments:
'$_currentValue1$_currentValue2$_currentThumbValue',
parameters: {
'name1': userInfo['displayName'],
'Id1': user!.uid,
},
preventDuplicates: false,
);
}
});
} else {
if (counter == 0) {
var failCounter = 5;
Timer.periodic(const Duration(seconds: 1),
(timer) {
setState(() {
showFailResult = true;
});
failCounter--;
if (failCounter == 0) {
timer.cancel();
setState(() {
showFailResult = false;
});
}
});
/// Delete Code From Match Collection
DocumentReference docCode = FirebaseFirestore
.instance
.collection('match')
.doc(
'${_currentValue1.toString()}${_currentValue2.toString()}${_currentThumbValue.toString()}');
await docCode
.delete()
.then((value) =>
print('Match Code Deleted'))
.catchError((error) => print(
"Failed To Delete Match Code: $error"));
/// Delete Room From Real Time
await codeRef.remove();
print('Cancel timer');
timer.cancel();
setState(() {
value = false;
isMatchVisible = true;
print(
'Data Value After Countdown : $value');
});
}
}
});
/// If Code Is Exist
} else if (value == true) {
/// Update Match Document For User1 AND User2
await FirebaseFirestore.instance
.collection('match')
.doc(
'${_currentValue1.toString()}${_currentValue2.toString()}${_currentThumbValue.toString()}',
)
.update({
'user2Id':
FirebaseAuth.instance.currentUser!.uid,
'user2Name':
userInfo['displayName'] ?? 'username',
});
/// Update Match Code In Real Time
await codeRef.update({
'user2Id':
FirebaseAuth.instance.currentUser!.uid,
'user2Name':
userInfo['displayName'] ?? 'username',
});
var goToPageUser2 = 2;
Timer.periodic(const Duration(seconds: 2),
(timer) async {
goToPageUser2--;
if (goToPageUser2 == 0) {
timer.cancel();
/// Go To Chat Screen
await Get.toNamed(
'/ChatScreen',
arguments:
'$_currentValue1$_currentValue2$_currentThumbValue',
parameters: {
'name2': userInfo['displayName'],
'Id2': user!.uid,
},
preventDuplicates: false,
);
}
});
}
} on FirebaseAuthException catch (e) {
showSnackBar(context, e.message!);
}
},
child: SizedBox(
width: 100,
height: 50,
child: Center(
child: Text(
'Match'.tr,
style: const TextStyle(
fontWeight: FontWeight.bold, fontSize: 20),
),
),
),
),