[FR]: Consider Ad Expiration for AppOpenAdManager

[teogor]

Is there an existing issue for this?

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Describe the problem

The AppOpenAdManager class in the codebase handles the loading and management of app open ads. According to the Google AdMob documentation, app open ads have a timeout period of four hours. This means that ads rendered more than four hours after the request time will no longer be valid and may not earn revenue.

To ensure that we don't display expired ads and provide a better user experience, we should consider ad expiration and implement a mechanism to check the validity of the loaded app open ad.

Suggested Solution

To address this issue, we can implement the following changes in the AppOpenAdManager class:

1. Introduce a private variable loadTime to keep track of the time when an app open ad was loaded.

2. Create a method, e.g., wasLoadTimeLessThanNHoursAgo, to calculate the time difference between the current time and the loadTime in hours.

3. Modify the isAdAvailable method to check if an app open ad is loaded and if it has been less than four hours since it was loaded.

By implementing these changes, we can ensure that we don't show expired ads to users and maintain the quality of ad delivery.

Describe the solution

Additional Information

• Google AdMob - App Open Ads Expiration

Additional context

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