public async Task <IHttpActionResult> LotteryAsync([Required] LotteryRequest request)
{
//中奖名单
var wonEmployee = await _prizeService.GetListAsync(a => a.EmployeeId, a => a.Disable == (short)BaseModel.DisableEnum.Normal);
var notWonEmployee = await _employeeService.GetListAsync(a => a.Id, a => !wonEmployee.Contains(a.Id));
var prizeType = await _prizeTypeService.FirstOrDefaultAsync(a => a.Id == request.Type);
//当前类型奖品的中奖人数
var typeCount = await _prizeService.CountAsync(a => a.PrizeTypeId == request.Type);
if (typeCount >= prizeType.Count)
{
return(Fail("奖品已经抽完"));
}
int xunhuanr = 0;
if ((prizeType.Count - typeCount) <= prizeType.Num)
{
xunhuanr = (prizeType.Count - typeCount);
}
else
{
xunhuanr = prizeType.Num;
}
Random rand = new Random();
List <int> plist = new List <int>();
for (int i = 0; i < xunhuanr; i++)
{
var employeeId = Suiji(rand, plist, notWonEmployee);
plist.Add(employeeId);
}
var result = await _prizeService.AddAsync(plist.Select(a => new Prize
{
EmployeeId = a,
PrizeTypeId = prizeType.Id
}).ToList());
return(Succeed(new LotteryResponse
{
EmployeeIds = plist,
Rounds = (prizeType.Count % prizeType.Num) == 0 ? (prizeType.Count / prizeType.Num) : (prizeType.Count / prizeType.Num + 1),
RoundsIndex = (typeCount % prizeType.Num) == 0 ? (typeCount / prizeType.Num) : (typeCount / prizeType.Num + 1)
}, "抽取成功"));
}