/// <summary>
/// 收到 "統計好友數" 後會回覆的文字
/// </summary>
/// <param name="receiveText">接收到的訊息</param>
/// <returns></returns>
private async Task <string> GetNumberOfFollowersTips(string receiveText)
{
string result = "";
NumberOfFollowersResponseModel responseModel = new NumberOfFollowersResponseModel();
int position = receiveText.IndexOf(".");
string date = null;
if (position != -1)
{
date = receiveText.Substring(position + 1);
}
else
{
date = DateTime.Now.ToString("yyyyMMdd");
result = @"輸入的格式有誤。
請輸入「好友數.yyyyMMdd」
例如：好友數.20200101";
return(result);
}
responseModel = await _lineClient.GetNumberOfFollowersAsync(date);
switch (responseModel.status)
{
case NumberOfFollowersStatus.ready:
result = $@"{date} 好友統計資料：
加入好友：{responseModel.followers}
目標好友：{responseModel.targetedReaches}
封鎖：{responseModel.blocks}";
break;
case NumberOfFollowersStatus.unready:
result = "該日的資料尚未統計完成";
break;
case NumberOfFollowersStatus.out_of_service:
result = "日期格式有誤";
break;
default:
result = "發生異常，暫時無法查詢";
break;
}
return(result);
}