public async Task GetHistory(CoffeeService coffee, User user, string text, SlackResponse response)
{
if (!int.TryParse(text, out int days))
{
days = 180;
}
StringBuilder sb = new StringBuilder();
var walletHistory = await coffee.GetFillHistories(user.Id, DateTime.Now, days);
foreach (var fill in walletHistory)
{
sb.AppendLine($"{fill.At.Month}월 {fill.At.Day}일 : *{fill.Amount}* 원");
}
response.Ephemeral(sb.ToString());
}
