Video Call Notification : Cloud Function

Video Call Notification : Cloud Function.js

exports.sendVideoCallNotification = functions.firestore
    .document(`personalvideocalls/{recepientId}`)
    .onCreate((snap, context) => {
        console.log("----------------start function--------------------");

        const doc = snap.data();
        console.log(doc);

        const idFrom = doc.senderuid;
        const idTo = doc.receiveruid;
        //const contentMessage = doc.content
        admin
            .firestore()
            .collection("users")
            .where("userId", "==", idTo)
            .get()
            .then(querySnapshot => {
                querySnapshot.forEach(userTo => {
                    console.log(`Found user to: ${userTo.data().userName}`);
                    console.log(`Found User to ${userTo.data().pushToken}`);
                    if (userTo.data().pushToken && userTo.data().userId !== idFrom) {
                        // Get info user from (sent)
                        admin
                            .firestore()
                            .collection("users")
                            .where("userId", "==", idFrom)
                            .get()
                            .then(querySnapshot2 => {
                                querySnapshot2.forEach(userFrom => {
                                    console.log(`Found user from: ${userFrom.data().userName}`);

                                    const payload = {
                                        notification: {
                                            title: "Incoming Video Call From:",
                                            body: `${userFrom.data().userName}`,
                                            click_action: 'FLUTTER_NOTIFICATION_CLICK',
                                            badge: "1",
                                            sound: "default"
                                        },
                                        data: {
                                            sendername: "Incoming Video Call From:",
                                            message: userFrom.data().userName,
                                        }
                                    };
                                    // Let push to the target device
                                    admin
                                        .messaging()
                                        .sendToDevice(userTo.data().pushToken, payload)
                                        .then(response => {
                                            console.log("Successfully sent message:", response);
                                        })
                                        .catch(error =>
                                            console.log("Error sending message:", error)
                                        );                                });
                            })
                            .catch(error => Console.log(error));
                    } else {
                        console.log("Can not find pushToken target user");
                    }
                });
            })
            .catch(e => Console.log(e));
        return null;
    });