using Qdp.Pricing.Base.Implementations;

namespace YLWebAPI.ApiModule.ManagerApi
{
    /// <summary>
    /// 工具类API
    /// </summary>
    [ManagerAuth]
    public class CalendarController : BaseApiController
    {
        /// <summary>
        /// 工作日天数计算
        /// 单元测试：CalendarTest.TestGetWorkingDayCount
        /// </summary>
        [HttpPost]
        [Route("api/v1/calendar/get_workingdaycount")]
        public ApiResponseModel GetWorkingDayCount([FromBody] GetWorkingDayCountRequest req)
        {
            if (req is null)
            {
                return JsonError("参数不能为空");
            }

            if (req.StartDate.Year < 2000)
            {
                return JsonError("StartDate需为2000年之后的日期");
            }

            var daycount = 0;
            var calendar = CalendarImpl.Get(req.CalendarName.TrimToNull() ?? "chn");

            DateTime? startDate = null, endDate = null;

            for (var date = req.StartDate; date <= req.EndDate; date = date.AddDays(1))
            {
                if (!calendar.IsHoliday(date))
                {
                    startDate = date;
                    break;
                }
            }

            if (startDate.HasValue)
            {
                daycount = 1;

                endDate = startDate;

                for (var date = req.EndDate; date > startDate.Value; date = date.AddDays(-1))
                {
                    if (!calendar.IsHoliday(date))
                    {
                        endDate = date;
                        break;
                    }
                }

                for (var date = startDate.Value; date < endDate.Value; date = date.AddDays(1))
                {
                    if (!calendar.IsHoliday(date))
                    {
                        daycount++;
                    }
                }
            }

            return JsonSuccess(new { DayCount = daycount, StartDate = startDate, EndDate = endDate });
        }
    }
}