In- App Non Renewal Purchase original_app_user_id

Hello,

I’m trying to grant users by writing to their userID, with a Webhook.

When the Webhook triggers, and I get the original_app_user_id I search which user with this original_app_user_id  is requesting a purchase, so I’m sure it’s this userID. ( see attached the code to query )

I update the original_app_user_id to the db right before I make a purchase from the iOS SDK by requesting purchaseInfo.

Does it seems to be a good way to do it ? or I could face bad scenarios ? If a change might happens to the original_app_user_id will it be before, during or after the purchase ?

PS: I’m using Transfer now (and before I used Aliases)

Thank you,

  async function returnCurrentUid(original_app_user_id){

    const querySnapShot = await fb.collection('in_app')
    .where('original_app_user_id', '==', original_app_user_id)
    .orderBy('request_date', 'desc')
    .get();

    if (querySnapShot.empty) {
      return 'Unknown'
    };

    const uid = querySnapShot.docs 0].id;

    return uid;
  };