public static async Task <IGeneration> AdvanceGenerationAsync(this SQLiteDatabase database)
{
IGeneration generation = await database.GetCurrentGenerationOrNullAsync();
if (generation != null)
{
// Update the end date of the current generation.
generation.EndDate = DateUtilities.GetCurrentDateUtc();
await database.UpdateGenerationAsync(generation);
}
// Create and add the next generation.
generation = new Generation {
Number = generation is null ? 1 : generation.Number + 1,
StartDate = generation is null ? DateTimeOffset.MinValue : DateUtilities.GetCurrentDateUtc(),
EndDate = DateTimeOffset.MaxValue
};
await database.AddGenerationAsync(generation);
return(generation);
}
