OnInstall event?

[BamaBob]

Trying to figure out how to delete and re-create the file where I save the settings for my clockface whenever the app is re-installed.  Is there an event that fires on installation?  Or is there some other way to perform a certain function only when the app is first installed?

Thanks.

[JonFitbit]

There's not an API for this, but you can write a file to the file system containing a version number, or check for the existence of a particular version of the settings file. e.g.

try {
  settings = fs.readFileSync("settings-v2.cbor", "cbor");
} catch(ex) {}
if (!settings) {
  try {
    settings = fs.readFileSync("settings.cbor", "cbor");
  } catch (ex) {
    settings = defaults;
  }
}