/// <summary>
/// 创建 <see cref="DetailPage"/>
/// </summary>
/// <param name="currentUserId">当前登录用户 ID</param>
/// <param name="dbContext"><see cref="KeylolDbContext"/></param>
/// <param name="userManager"><see cref="KeylolUserManager"/></param>
/// <returns><see cref="DetailPage"/></returns>
public static async Task <DetailPage> CreateAsync(string currentUserId, KeylolDbContext dbContext,
KeylolUserManager userManager)
{
var couponLogs = await CouponLogList.CreateAsync(currentUserId, 1, true, dbContext, userManager);
return(new DetailPage
{
CouponLogPageCount = couponLogs.Item2,
CouponLogs = couponLogs.Item1
});
}
/// <summary>
/// 创建 <see cref="CouponLogList"/>
/// </summary>
/// <param name="currentUserId">当前登录用户 ID</param>
/// <param name="page">分页页码</param>
/// <param name="returnPageCount">是否返回总页数</param>
/// <param name="dbContext"><see cref="KeylolDbContext"/></param>
/// <param name="userManager"><see cref="KeylolUserManager"/></param>
/// <returns>Item1 表示 <see cref="CouponLogList"/>，Item2 表示总页数</returns>
public static async Task <Tuple <CouponLogList, int> > CreateAsync(string currentUserId, int page,
bool returnPageCount, KeylolDbContext dbContext, KeylolUserManager userManager)
{
var conditionQuery = from log in dbContext.CouponLogs
where log.UserId == currentUserId
orderby log.Sid descending
select log;
var queryResult = await conditionQuery.Select(l => new
{
Count = returnPageCount ? conditionQuery.Count() : 1,
l.Event,
l.Change,
l.Balance,
l.CreateTime,
l.Description
}).TakePage(page, RecordsPerPage).ToListAsync();
var result = new CouponLogList(queryResult.Count);
foreach (var l in queryResult)
{
result.Add(new CouponLog
{
Event = l.Event,
Change = l.Change,
Balance = l.Balance,
CreateTime = l.CreateTime,
Description = await ParseDescriptionAsync(l.Description, dbContext, userManager)
});
}
var firstRecord = queryResult.FirstOrDefault();
return(new Tuple <CouponLogList, int>(
result,
(int)Math.Ceiling(firstRecord?.Count / (double)RecordsPerPage ?? 1)));
}
