How can I calculate remaining trial days in a Remix app with GraphQL?

[Ionuts1]

Hi guys, I'm currently develop a small app for shopify using cli 3.0 remix, now and now i'm stuck at trialDays, how i can get how many days are left?
What i'm trying right now to find a solution, i don't know if its the best solution for getting the remaining days from trial:
1. I do a query after customer approve the app:

query {
  currentAppInstallation {
    id
    activeSubscriptions {
      id
      trialDays
      currentPeriodEnd
      createdAt
    }
  }
}

2. And is getting the response:

"activeSubscriptions": [
        {
          "id": "gid://shopify/AppSubscription/xxxxxx",
          "trialDays": 1,
          "currentPeriodEnd": "2024-03-06T23:15:42Z",
          "createdAt": "2024-02-04T23:15:31Z"
        }
      ]

3. Start calculate the difference between createAt and currentPeriodEnd, but its weird because i have only 1 day as a trial and on the code from above its saying 2 days from 04-02-2024 to 06-02-2024.

I did some investigation but i find only this answer which looks what i really need but i can't used because is with Rest api and not GraphQL. "The trial ends on calculated based on the RecurringApplicationCharge's activation time."

It is possible to use rest api inside of remix.js? 

[appaza]

export const CalculateTrialStatus = (currentAppInstallation: any): string => {
  if (
    !currentAppInstallation ||
    !currentAppInstallation.activeSubscriptions ||
    currentAppInstallation.activeSubscriptions.length === 0
  ) {
    return "No active subscriptions";
  }

  const subscription = currentAppInstallation.activeSubscriptions[0];
  const currentPeriodEnd = new Date(subscription.currentPeriodEnd);
  const createdAt = new Date(subscription.createdAt);
  const trialDays = subscription.trialDays;

  // Calculate the remaining trial days
  const now = new Date();
  const elapsedMilliseconds = now.getTime() - createdAt.getTime();
  const elapsedDays = elapsedMilliseconds / (1000 * 60 * 60 * 24);
  let remainingTrialDays = trialDays - elapsedDays;

  // Adjust remaining trial days if past the current period end
  if (now > currentPeriodEnd) {
    remainingTrialDays = 0;
  }

  // Ensure remaining trial days is not negative
  remainingTrialDays = Math.max(0, remainingTrialDays);

  // Round remaining trial days to the nearest whole number
  remainingTrialDays = Math.round(remainingTrialDays);

  // Return appropriate message based on remaining trial days
  if (remainingTrialDays === 0) {
    return "Upgrade Now";
  } else {
    return `${remainingTrialDays} days trial`;
  }
};