limitPerDay static method

dynamic limitPerDay(String actionKey, dynamic perform(), { int maxPerDay = 5, dynamic unauthorized()?, })

Limit the number of times an action can be performed in a day. Provide an actionKey for the action you want to limit. Provide an perform to execute if the user is authorized. Provide a maxPerDay to limit the number of times the action can be performed.

Implementation

static limitPerDay(String actionKey, Function() perform,
    {int maxPerDay = 5, Function()? unauthorized}) async {
  String key = "action_$actionKey";

  /// check that the actions occur on the same day
  Map<String, dynamic>? value = await NyStorage.readJson(key);
  if (value == null) {
    await NyStorage.saveJson(
        key, {"date": DateTime.now().toDateString(), "value": "1"});
    await perform();
    return;
  }
  int valueInt = int.parse(value['value']);

  // reset the value if the date is not today
  if (value['date'] != DateTime.now().toDateString()) {
    await NyStorage.saveJson(
        key, {"date": DateTime.now().toDateString(), "value": "1"});
    await perform();
    return;
  }

  if (valueInt >= maxPerDay) {
    if (unauthorized != null) {
      await unauthorized();
    }
    return;
  }
  await NyStorage.saveJson(key, {
    "date": DateTime.now().toDateString(),
    "value": (valueInt + 1).toString()
  });
  await perform();
}