Question

I’ve made desktop app, and i want it to work also as an web app.
I get errors on lines with File() type and FileStream, is there any way to bypass this ?

Answer 1

To piggyback on @Florian F’s correct response, here is how you might implement it:

Create an interface to abstract your file access

public interface IGetTheStuffService {
    function getSomeTofu():Tofu;
}

Create a file-based implementation

public class FileStuffService implements IGetTheStuffService {
    public function getSomeTofu():Tofu {
        // File-based implementation
    }
}

And an HTTP-based implementation

public class HTTPStuffService implements IGetTheStuffService {
    public function getSomeTofu():Tofu {
        // HTTP-based implementation
    }
}

In your consumer, rely on the IGetTheStuffService

[Inject] public var tofuService:IGetTheStuffService;

public function doSomeStuff():void {
    var tofu:Tofu = tofuService.getSomeTofu();
    // act on the tofu
}

Notice the Inject meta tag. This is where your Dependency Injection (DI) system would push in your dependency based on the configuration (FileStuffService for Air apps or HTTPStuffService for Web apps). Parsley and RobotLegs use [Inject] where fiex-ioc uses [IocBind]

Of course, you could go without a DI container… you would just inject the parameter directly.

But you get the idea… a pretty simple pattern, actually.