private ReasonOfChanges ComparePerformanceData(PlaybillChangeEntity lastChange, IPerformanceData freshData)
{
int freshMinPrice = freshData.MinPrice;
if (lastChange == null)
{
return(freshMinPrice == 0 ? ReasonOfChanges.Creation : ReasonOfChanges.StartSales);
}
if (lastChange.MinPrice == 0)
{
return(freshMinPrice == 0 ? ReasonOfChanges.NoReason : ReasonOfChanges.StartSales);
}
if (lastChange.MinPrice > freshMinPrice)
{
return(ReasonOfChanges.PriceDecreased);
}
if (lastChange.MinPrice < freshMinPrice)
{
return(ReasonOfChanges.PriceIncreased);
}
return(ReasonOfChanges.NoReason);
}
public async Task <bool> AddChange(PlaybillEntity entity, PlaybillChangeEntity change)
{
PlaybillEntity oldValue = await GetById(entity.Id);
if (oldValue == null)
{
return(false);
}
entity.Changes.Add(change);
_dbContext.Add(change);
_dbContext.Entry(entity).State = EntityState.Modified;
try
{
await _dbContext.SaveChangesAsync();
return(true);
}
catch (Exception ex)
{
Trace.TraceInformation($"AddChange DbException {ex.Message} InnerException {ex.InnerException?.Message}");
return(false);
}
}
public async Task <bool> Update(PlaybillChangeEntity entity)
{
PlaybillChangeEntity oldValue = await GetChangeById(entity.Id);
if (oldValue == null)
{
return(false);
}
PlaybillEntity playbillEntity = null;
try
{
playbillEntity = _dbContext.Playbill
.Include(p => p.Performance)
.ThenInclude(p => p.Type)
.Include(p => p.Performance)
.ThenInclude(p => p.Location)
.Include(p => p.Changes)
.FirstOrDefault(p => p.Id == entity.PlaybillEntityId);
var updatedChange = playbillEntity?.Changes.FirstOrDefault(ch => ch.Id == entity.Id);
if (updatedChange == null)
{
return(false);
}
updatedChange.LastUpdate = entity.LastUpdate;
await _dbContext.SaveChangesAsync();
return(true);
}
catch (Exception ex)
{
Trace.TraceInformation(
$"Update Change entity DbException {ex.Message} InnerException {ex.InnerException?.Message}");
return(false);
}
finally
{
if (playbillEntity != null)
{
_dbContext.Entry(playbillEntity.Performance.Location).State = EntityState.Detached;
_dbContext.Entry(playbillEntity.Performance.Type).State = EntityState.Detached;
_dbContext.Entry(playbillEntity.Performance).State = EntityState.Detached;
foreach (var change in playbillEntity.Changes)
{
_dbContext.Entry(change).State = EntityState.Detached;
}
_dbContext.Entry(playbillEntity).State = EntityState.Detached;
}
}
}
private string GetChangeDescription(SubscriptionEntity subscription, PlaybillChangeEntity change)
{
var culture = CultureInfo.CreateSpecificCulture(subscription.TelegramUser.Culture);
ReasonOfChanges reason = (ReasonOfChanges)change.ReasonOfChanges;
switch (reason)
{
case ReasonOfChanges.Creation:
string month = culture.DateTimeFormat.GetMonthName(change.PlaybillEntity.When.Month);
return($"Новое в афише на {month}: {change.PlaybillEntity.Performance.Name} {change.PlaybillEntity.Url}");
case ReasonOfChanges.PriceDecreased:
return($"Снижена цена на {change.PlaybillEntity.Performance.Name} цена билета от {change.MinPrice} {change.PlaybillEntity.Url}");
case ReasonOfChanges.PriceIncreased:
return($"Билеты подорожали {change.PlaybillEntity.Performance.Name} цена билета от {change.MinPrice} {change.PlaybillEntity.Url}");
case ReasonOfChanges.StartSales:
return($"Появились в продаже билеты на {change.PlaybillEntity.Performance.Name} цена билета от {change.MinPrice} {change.PlaybillEntity.Url}");
}
return(null);
}
