Bloom.InstallerSupport.HandleSquirrelInstallEvent C# (CSharp) Method

HandleSquirrelInstallEvent() static private method

static private HandleSquirrelInstallEvent ( string args ) : void
args string
return void
        internal static void HandleSquirrelInstallEvent(string[] args)
        {
            #if __MonoCS__
            Debug.Fail("HandleSquirrelInstallEvent should not run on Linux!");	// and the code below doesn't compile on Linux
            return;
            #else
            bool firstTime = false;
            var updateUrlResult = LookupUrlOfSquirrelUpdate();
            // Should only be null if we're not online. Not sure how squirrel will handle that,
            // but at least one of these operations is responsible for setting up shortcuts to the program,
            // which we'd LIKE to work offline. Passing it a plausible url, even though it will presumably fail,
            // seems less likely to cause problems than passing null.
            if(string.IsNullOrEmpty(updateUrlResult.URL))
                updateUrlResult.URL = @"https://s3.amazonaws.com/bloomlibrary.org/squirrel";
            if (args[0] == "--squirrel-uninstall")
            {
                RemoveBloomRegistryEntries();
            }
            if (args[0] == "--squirrel-updated")
            {
                var props = new Dictionary<string, string>();
                if (args.Length > 1)
                    props["newVersion"] = args[1];
                props["channel"] = ApplicationUpdateSupport.ChannelName;
                Analytics.Track("Update Version", props);
            }
            string iconPath = null;
            if (args[0] == "--squirrel-install")
            {
                //Using an icon in the root folder fixes the problem of losing the shortcut icon when we
                //upgrade, lose the original, and eventually the windows explorer cache loses it.
                //There was another attempt at fixing this by finding all the shortcuts and updating them, but that didn't work in our testing and this seems simpler and more robust.
                //There may be some other reason for the old approach of pointing at the icon of the app itself (e.g. could be a different icon)?
                var exePath = Application.ExecutablePath;
                var rootAppDirectory = Path.GetDirectoryName(Path.GetDirectoryName(exePath));
                // directory that holds e.g. /3.6/Bloom.exe
                var versionIconPath = Path.ChangeExtension(exePath, "ico"); // where this installation has icon
                iconPath = Path.ChangeExtension(Path.Combine(rootAppDirectory, Path.GetFileName(exePath)), "ico");
                // where we will put a version-independent icon
                try
                {
                    if (RobustFile.Exists(versionIconPath))
                        RobustFile.Copy(versionIconPath, iconPath, true);
                }
                catch (Exception)
                {
                    // ignore...most likely some earlier version of the icon is locked somehow, fairly harmless.
                }
                // Normally this is done on every run of the program, but if we're doing a silent allUsers install,
                // this is our only time running with admin privileges so we can actually make the entries for all users.
                MakeBloomRegistryEntries(args);
            }
            switch (args[0])
            {
                // args[1] is version number
                case "--squirrel-install": // (first?) installed
                case "--squirrel-updated": // updated to specified version
                case "--squirrel-obsolete": // this version is no longer newest
                case "--squirrel-uninstall": // being uninstalled
                    using (var mgr = new UpdateManager(updateUrlResult.URL, Application.ProductName))
                    {
                        // WARNING, in most of these scenarios, the app exits at the end of HandleEvents;
                        // thus, the method call does not return and nothing can be done after it!
                        // We replace two of the usual calls in order to take control of where shortcuts are installed.
                        SquirrelAwareApp.HandleEvents(

                            onInitialInstall: v =>
                            {
                                mgr.CreateShortcutsForExecutable(Path.GetFileName(Assembly.GetEntryAssembly().Location),
                                    StartMenuLocations,
                                    false, // not just an update, since this is case initial install
                                    null, // can provide arguments to pass to Update.exe in shortcut, defaults are OK
                                    iconPath,
                                    SharedByAllUsers());
                                // Normally we can't do this in our quick silent run as part of install, because of the need to escalate
                                // privilege. But if we're being installed for all users we must already be running as admin.
                                // We don't need to do an extra restart of Bloom because this install-setup run of Bloom will finish
                                // right away anyway. We do this last because we've had some trouble (BL-3342) with timeouts
                                // if this install somehow ties up the CPU until Squirrel thinks Bloom is taking too long to do its
                                // install-only run.
                                if (SharedByAllUsers())
                                    FontInstaller.InstallFont("AndikaNewBasic", needsRestart: false);
                            },
                            onAppUpdate: v => mgr.CreateShortcutForThisExe(),
                            onAppUninstall: v => mgr.RemoveShortcutsForExecutable(Path.GetFileName(Assembly.GetEntryAssembly().Location), StartMenuLocations, SharedByAllUsers()),
                            onFirstRun: () => firstTime = true,
                            arguments: args);
                    }
                    break;
            }
            #endif
        }