public async void Run(IBackgroundTaskInstance taskInstance)
{
// Create the baconit manager
m_baconMan = new BaconManager(true);
// Setup the ref counted deferral
RefCountedDeferral refDeferral = new RefCountedDeferral(taskInstance.GetDeferral(), OnDeferralCleanup);
// Add a ref so everyone in this call is protected
refDeferral.AddRef();
// Fire off the update
await m_baconMan.BackgroundMan.RunUpdate(refDeferral);
// After this returns the deferral will call complete unless someone else took a ref on it.
refDeferral.ReleaseRef();
}
/// <summary>
/// Kicks off an update of the images.
/// </summary>
/// <param name="force"></param>
public async Task RunUpdate(RefCountedDeferral refDeferral, bool force = false)
{
if ((IsDeskopEnabled || IsLockScreenEnabled || IsBandWallpaperEnabled) && UserProfilePersonalizationSettings.IsSupported())
{
TimeSpan timeSinceLastRun = DateTime.Now - LastImageUpdate;
if(timeSinceLastRun.TotalMinutes > UpdateFrquency || force)
{
// Make sure we aren't running
lock(this)
{
if(m_isRunning)
{
return;
}
m_isRunning = true;
}
// Do the updates
await KickOffUpdate(force, refDeferral);
}
}
}
/// <summary>
/// Checks if we should update and if so does so.
/// </summary>
/// <param name="refDeferral"></param>
/// <param name="force"></param>
public void RunUpdate(RefCountedDeferral refDeferral, bool force = false)
{
if (IsEnabled && m_baconMan.UserMan.IsUserSignedIn)
{
TimeSpan timeSinceLastRun = DateTime.Now - LastUpdateTime;
if (timeSinceLastRun.TotalMinutes > 10 || force)
{
// We should update. Grab the deferral
m_refDeferral = refDeferral;
m_refDeferral.AddRef();
// Make the collector
m_collector = new MessageCollector(m_baconMan);
// We don't need to sub to the collection update because we will get
// called automatically when it updates
m_collector.OnCollectorStateChange += Collector_OnCollectorStateChange;
// Tell it to update!
m_collector.Update(true);
}
}
}
/// <summary>
/// This will actually kick off all of the work.
/// </summary>
public async Task RunUpdate(RefCountedDeferral refDefferal)
{
// If we are a background task report the time
if (m_baconMan.IsBackgroundTask)
{
LastUpdateTime = DateTime.Now;
}
// If we are not a background task check message of the day
if(!m_baconMan.IsBackgroundTask)
{
// Sleep for a little while to give the UI some time get work done.
await Task.Delay(1000);
// Check for MOTD updates.
await m_baconMan.MotdMan.CheckForUpdates();
// Sleep for a little while to give the UI some time get work done.
await Task.Delay(5000);
}
// Ensure everything is ready
await EnsureBackgroundSetup();
// Run the image update if needed
await ImageUpdaterMan.RunUpdate(refDefferal);
// Run the message update if needed.
MessageUpdaterMan.RunUpdate(refDefferal);
}
/// <summary>
/// Releases the deferral if it is held.
/// </summary>
private void ReleaseDeferal()
{
if(m_refDeferral != null)
{
m_refDeferral.ReleaseRef();
}
m_refDeferral = null;
}
/// <summary>
/// Called by the app when the app is suspending
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void OnSuspending_Fired(object sender, SuspendingEventArgs e)
{
// Setup a ref deferral for everyone to hold. We also need to setup a clean up action to save the setting
// when the deferral is done.
RefCountedDeferral refDeferral = new RefCountedDeferral(e.SuspendingOperation.GetDeferral(), () =>
{
// We need to flush the settings here just before we complete the deferal. We need to block this function
// until the settings are flushed.
using (AutoResetEvent are = new AutoResetEvent(false))
{
Task.Run(async () =>
{
// Flush out the local settings
await SettingsMan.FlushLocalSettings();
are.Set();
});
are.WaitOne();
}
});
// Add a ref to cover anyone down this call stack.
refDeferral.AddRef();
// Make the
OnSuspendingArgs args = new OnSuspendingArgs()
{
RefDeferral = refDeferral
};
// Fire the event
m_onSuspending.Raise(this, args);
// Release our ref to the deferral
refDeferral.ReleaseRef();
}
/// <summary>
/// Actually does the update
/// </summary>
private async Task KickOffUpdate(bool force, RefCountedDeferral refDeferral)
{
m_baconMan.TelemetryMan.ReportLog(this, "Updater updating.");
try
{
// Figure out if we need to do a full update
int fullUpdateFequencyMins = UpdateFrquency * c_maxImageCacheCount;
TimeSpan timeSinceLastFullUpdate = DateTime.Now - LastFullUpdate;
if (timeSinceLastFullUpdate.TotalMinutes > fullUpdateFequencyMins || force)
{
m_baconMan.TelemetryMan.ReportLog(this, "Running full update");
// Update lock screen images
if (IsLockScreenEnabled)
{
m_baconMan.TelemetryMan.ReportLog(this, "Updating lock screen", SeverityLevel.Verbose);
// Make a deferral scope object so we can do our work without being killed.
// Note! We need release this object or it will hang the app around forever!
m_lockScreenRefDeferral = refDeferral;
m_lockScreenRefDeferral.AddRef();
// Kick off the update, this will happen async.
GetSubredditStories(LockScreenSubredditName, UpdateTypes.LockScreen);
}
if(IsDeskopEnabled)
{
m_baconMan.TelemetryMan.ReportLog(this, "Updating lock screen", SeverityLevel.Verbose);
// Shortcut: If lock screen in enabled and it is the same subreddit just share the same cache. If not,
// get the desktop images
if (IsLockScreenEnabled && LockScreenSubredditName.Equals(DesktopSubredditName))
{
m_baconMan.TelemetryMan.ReportLog(this, "Desktop same sub as lockscreen, skipping image update.", SeverityLevel.Verbose);
}
else
{
m_baconMan.TelemetryMan.ReportLog(this, "Updating desktop image", SeverityLevel.Verbose);
// Make a deferral scope object so we can do our work without being killed.
// Note! We need release this object or it will hang the app around forever!
m_desktopRefDeferral = refDeferral;
m_desktopRefDeferral.AddRef();
// Kick off the update, this will happen async.
GetSubredditStories(DesktopSubredditName, UpdateTypes.Desktop);
}
}
// Update lock screen images
if (IsBandWallpaperEnabled)
{
m_baconMan.TelemetryMan.ReportLog(this, "Updating band wallpaper", SeverityLevel.Verbose);
// Make a deferral scope object so we can do our work without being killed.
// Note! We need release this object or it will hang the app around forever!
m_bandRefDeferral = refDeferral;
m_bandRefDeferral.AddRef();
// Kick off the update, this will happen async.
GetSubredditStories(BandSubredditName, UpdateTypes.Band);
}
}
// Else full update
else
{
m_baconMan.TelemetryMan.ReportLog(this, "No need for a full update, just rotating.");
// If we aren't doing a full update just rotate the images.
await DoImageRotation(UpdateTypes.All);
// Stop the running state
lock (this)
{
m_isRunning = false;
}
}
}
catch(Exception e)
{
m_baconMan.MessageMan.DebugDia("Failed to set background image", e);
m_baconMan.TelemetryMan.ReportUnExpectedEvent(this, "Failed to set background image", e);
}
}
/// <summary>
/// Release the deferral for a type if it is held
/// </summary>
/// <param name="type"></param>
private void ReleaseDeferral(UpdateTypes type)
{
lock(this)
{
if (type == UpdateTypes.LockScreen)
{
if (m_lockScreenRefDeferral != null)
{
m_lockScreenRefDeferral.ReleaseRef();
}
m_lockScreenRefDeferral = null;
}
else if(type == UpdateTypes.Band)
{
if (m_bandRefDeferral != null)
{
m_bandRefDeferral.ReleaseRef();
}
m_bandRefDeferral = null;
}
else
{
if (m_desktopRefDeferral != null)
{
m_desktopRefDeferral.ReleaseRef();
}
m_desktopRefDeferral = null;
}
}
}