public override async Task <int> SaveChangesAsync(CancellationToken cancellationToken)
{
//Limit Log Table Size
const int maxLogSize = 2000;
var addedLogEntryCount = ChangeTracker.Entries <LogEntry>().Count(p => p.State == EntityState.Added);
if (addedLogEntryCount > 0)
{
if (addedLogEntryCount > maxLogSize)
{
var numberToRemove = addedLogEntryCount - maxLogSize;
var doNotAdd = ChangeTracker.Entries <LogEntry>()
.Where(p => p.State == EntityState.Added)
.OrderBy(o => o.Entity.Datetime).Take(numberToRemove);
foreach (var entry in doNotAdd)
{
entry.State = EntityState.Detached;
}
}
var currentLogEntryCount = await LogEntries.CountAsync(cancellationToken);
var toRemove = (currentLogEntryCount + addedLogEntryCount) - maxLogSize;
if (toRemove > 0)
{
var toBeRemoved =
await LogEntries.OrderBy(o => o.Datetime).Take(toRemove).ToListAsync(cancellationToken);
LogEntries.RemoveRange(toBeRemoved);
}
}
//Update Run Scene Command Scene Name upon Scene Name update
var sceneIdsOfUpdatedNames = ChangeTracker.Entries <Scene>().Where(p => p.State == EntityState.Modified && p.Property("Name").IsModified).Select(o => o.Entity.Id.ToString(CultureInfo.InvariantCulture)).ToList();
Expression <Func <IStoredCommand, bool> > sceneCmdPredicate = o => o.Command.UniqueIdentifier == "RUN_SCENE" && sceneIdsOfUpdatedNames.Contains(o.Argument);
foreach (var cmd in await SceneStoredCommands.Where(sceneCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await DeviceValueTriggers.Where(sceneCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await ScheduledTasks.Where(sceneCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
//Update Activate Group Command Scene Name upon Group Name update
var groupIdsOfUpdatedNames = ChangeTracker.Entries <Group>().Where(p => p.State == EntityState.Modified && p.Property("Name").IsModified).Select(o => o.Entity.Id.ToString(CultureInfo.InvariantCulture)).ToList();
Expression <Func <IStoredCommand, bool> > groupPredicate = o => (o.Command.UniqueIdentifier == "GROUP_ON" || o.Command.UniqueIdentifier == "GROUP_OFF") && groupIdsOfUpdatedNames.Contains(o.Argument);
foreach (var cmd in await SceneStoredCommands.Where(groupPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await DeviceValueTriggers.Where(groupPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await ScheduledTasks.Where(groupPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
//Update cmd descriptions on JavaScriptCommand name changes
var javescriptIdsOfUpdatedNameIds = ChangeTracker.Entries <JavaScriptCommand>().Where(p => p.State == EntityState.Modified && p.Property("Name").IsModified).Select(o => o.Entity.Id).ToList();
Expression <Func <IStoredCommand, bool> > jsCmdPredicate = o => o.Command is JavaScriptCommand && javescriptIdsOfUpdatedNameIds.Contains(o.Command.Id);
foreach (var cmd in await SceneStoredCommands.Where(jsCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await DeviceValueTriggers.Where(jsCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await ScheduledTasks.Where(jsCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
//Update trigger descriptions on device value name changes
var deviceValueIdsOfUpdatedNames = ChangeTracker.Entries <DeviceValue>().Where(p => p.State == EntityState.Modified && p.Property("Name").IsModified).Select(o => o.Entity.Id).ToList();
var triggers = await DeviceValueTriggers.Include(o => o.DeviceValue).Include(o => o.DeviceValue.Device).Where(o => deviceValueIdsOfUpdatedNames.Contains(o.DeviceValue.Id)).ToListAsync(cancellationToken);
foreach (var trigger in triggers)
{
trigger.SetDescription();
}
//Update commands on device name changes
var deviceIdsOfUpdatedNames = ChangeTracker.Entries <Device>().Where(p => p.State == EntityState.Modified && (p.Property("Name").IsModified || p.Property("Location").IsModified)).Select(o => o.Entity.Id).ToList();
var deviceIdsStrOfUpdatedNames = deviceIdsOfUpdatedNames.Select(o => o.ToString());
var deviceTriggers = await DeviceValueTriggers.Include(o => o.DeviceValue).Include(o => o.DeviceValue.Device).Where(o => deviceIdsOfUpdatedNames.Contains(o.DeviceValue.DeviceId)).ToListAsync(cancellationToken);
foreach (var trigger in deviceTriggers)
{
trigger.SetDescription();
}
//Update repoll commands
Expression <Func <IStoredCommand, bool> > repollCmdPredicate = o => o.Command.UniqueIdentifier == "REPOLL_ME" && deviceIdsStrOfUpdatedNames.Contains(o.Argument);
foreach (var cmd in await SceneStoredCommands.Where(repollCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await DeviceValueTriggers.Where(repollCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await ScheduledTasks.Where(repollCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
Expression <Func <IStoredCommand, bool> > deviceTypeCmdPredicate = o => o.Command is DeviceTypeCommand && deviceIdsStrOfUpdatedNames.Contains(o.Argument2);
foreach (var cmd in await SceneStoredCommands.Where(deviceTypeCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await DeviceValueTriggers.Where(deviceTypeCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await ScheduledTasks.Where(deviceTypeCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
var deviceCommandIds = await DeviceCommands.Where(o => deviceIdsOfUpdatedNames.Contains(o.DeviceId)).Select(o => o.Id).ToListAsync(cancellationToken);
Expression <Func <IStoredCommand, bool> > deviceCmdPredicate = o => o.Command is DeviceCommand && deviceCommandIds.Contains(o.Command.Id);
foreach (var cmd in await SceneStoredCommands.Where(deviceCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await DeviceValueTriggers.Where(deviceCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
foreach (var cmd in await ScheduledTasks.Where(deviceCmdPredicate).ToListAsync(cancellationToken))
{
await cmd.SetTargetObjectNameAsync(this);
}
//Automatically store history when a device value is changed.
var history =
ChangeTracker.Entries <DeviceValue>()
.Where(p => p.State == EntityState.Modified && p.Property("Value").IsModified)
.Select(
o => new DeviceValueHistory
{
DeviceValueId = o.Entity.Id,
Value = o.Entity.Value
}).ToList();
DeviceValueHistories.AddRange(history);
return(await base.SaveChangesAsync(cancellationToken));
}