import neko.Lib;
import sys.FileSystem;
import sys.io.File;
import tink.core.Future;
import tink.core.Outcome;

class FutureTriggerExample
{
	static function main()
	{
		TxtLoaders.loadAll(['existing.txt', 'non-existing.txt']).handle(function(outcome) trace(outcome));
	}
}

class TxtLoader {
	static public function load(url:String):Surprise<String, String> {
		var f = Future.trigger();
		if (FileSystem.exists(url))
			f.trigger(Success( File.getContent(url)))
		else
			f.trigger(Failure('Can\'t find $url'));

		return f.asFuture();
	}
}

class TxtLoaders {
	static public function loadAll(urls:Array<String>): Future<Array<Outcome<String, String>>> {
		return [ for (url in urls) TxtLoader.load(url) ];
	}
}