//--------------------------------------------------------Misc Methods:---------------------------------------------------------------\\
#region --Misc Methods (Public)--
/// <summary>
/// Gets called on App start and performs update task e.g. migrate the DB to a new format.
/// </summary>
#pragma warning disable CS1998 // Async method lacks 'await' operators and will run synchronously
public static async Task OnAppStartAsync()
#pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
{
PackageVersion versionLastStart = GetLastStartedVersion();
// Check if version != 0.0.0.0 => first ever start of the app:
if (!(versionLastStart.Major == 0 && versionLastStart.Major == versionLastStart.Minor && versionLastStart.Minor == versionLastStart.Revision && versionLastStart.Revision == versionLastStart.Build) || Settings.GetSettingBoolean(SettingsConsts.INITIALLY_STARTED))
{
if (!Compare(versionLastStart, GetPackageVersion()))
{
// Total refactoring in version 2.0.0.0:
if (versionLastStart.Major < 2)
{
Logger.Info("Started updating to version 2.0.0.0.");
Settings.SetSetting(SettingsConsts.INITIALLY_STARTED, false);
Logger.Info("Finished updating to version 2.0.0.0.");
}
// DB layout for dishes changed in 2.1.0.0:
if (versionLastStart.Major <= 2 && versionLastStart.Minor < 1)
{
Logger.Info("Started updating to version 2.1.0.0.");
Logger.Info("Resetting canteens DB...");
try
{
StorageFile file = await ApplicationData.Current.LocalFolder.GetFileAsync("canteens.db");
if (!(file is null))
{
await file.DeleteAsync();
}
}
catch (Exception e)
{
Logger.Error("Failed to remove old canteens DB with:", e);
}
Logger.Info("Updating canteens and dishes...");
await CanteenManager.INSTANCE.UpdateCanteensAsync(true);
Settings.SetSetting(SettingsConsts.INITIALLY_STARTED, false);
Logger.Info("Finished updating to version 2.1.0.0.");
}
// DB layout for dishes changed in 2.2.0.0:
if (versionLastStart.Major <= 2 && versionLastStart.Minor < 2)
{
Logger.Info("Started updating to version 2.2.0.0.");
Logger.Info("Resetting canteens DB...");
try
{
StorageFile file = await ApplicationData.Current.LocalFolder.GetFileAsync("canteens.db");
if (!(file is null))
{
await file.DeleteAsync();
}
}
catch (Exception e)
{
Logger.Error("Failed to remove old canteens DB with:", e);
}
Logger.Info("Updating canteens and dishes...");
await CanteenManager.INSTANCE.UpdateCanteensAsync(true);
Settings.SetSetting(SettingsConsts.INITIALLY_STARTED, false);
Logger.Info("Finished updating to version 2.2.0.0.");
}
// DB layout for TUMonline changed in 2.3.0.0:
if (versionLastStart.Major <= 2 && versionLastStart.Minor < 3)
{
Logger.Info("Started updating to version 2.3.0.0.");
using (TumOnlineDbContext ctx = new TumOnlineDbContext())
{
await ctx.RecreateDbAsync();
}
CacheDbContext.ClearCache();
Logger.Info("Finished updating to version 2.2.0.0.");
}
// New tables for the canteen DB in 2.4.0.0:
if (versionLastStart.Major <= 2 && versionLastStart.Minor < 4)
{
Logger.Info("Started updating to version 2.4.0.0.");
using (CanteensDbContext ctx = new CanteensDbContext())
{
await ctx.RecreateDbAsync();
}
CacheDbContext.ClearCache();
Logger.Info("Finished updating to version 2.4.0.0.");
}
}
}
SetVersion(GetPackageVersion());
}