package  {
	import flash.events.Event
	import flash.utils.*
	import flash.utils.getQualifiedClassName
		
	public class RegistryManager extends PollableBaseRegistry {
	
		// This object will keep track of which registry last updated which
		// values. This way there is no need to copy across values. We just check
		// who had it last and ask her for it.
		private var valueMap:Object;
		private var registries:Array;
		private var numRegistriesPolled:int;
		private var pollRate:int;

		public function RegistryManager(pollRate:int) {
			this.registries = [];
			this.valueMap = {};
			this.numRegistriesPolled = 0;
			this.pollRate = pollRate;
						
						super.whoAmI();
						
						var test = super;
						test.whoAmI();
						
			// INCEPTION INTENSIFIES
			//this.addRegistry(super);
			
			//setInterval(this.poll, this.pollRate);
		}
		
		public function addRegistry(registry:IPollableRegistry, registryCallback:Function = null) {
			this.registries.push(registry);
			registry.addEventListener(registry.getUpdateEventType(), this.updated);
			registry.addEventListener(registry.getCycleCompleteEventType(), this.cycleComplete);
		}
		
		public override function get(propChain:String):* {
			trace('should not see this');
			return (this.valueMap[propChain] && this.valueMap[propChain].get(propChain));
		}
		
		public override function getLastUpdated():Array {
			var updatedValues = [];
			for (var propChain in this.valueMap) {
				trace(this.valueMap[propChain].whoAmI());
				// HMMMM...
				// if we are looking at ourselves AND we have updated values, OR we are looking at something else and it has updated values
				if(this.valueMap[propChain].getLastUpdated().indexOf(propChain) >= 0)
					updatedValues.push(propChain)
			}
			
			return updatedValues;
		}
		
		private function poll() {
			// This acts as a lock. After all the registries are polled, it resets to 0
			// so we know it's safe to poll again.
			if(this.numRegistriesPolled === 0) {
				for each(var registry:Object in this.registries) {
					this.numRegistriesPolled++;
					var fn:Function = registry.getPollableFunction();
					fn();
				}
			}
		}
		
		// Fires when _any_ of our registries are updated
		private function updated(e:PollEvent) {			
			var update = false;
			
			for each(var propChain in e.pollTarget.getLastUpdated()) {
				this.valueMap[propChain] = e.pollTarget;
				update = true;
			}
			
			//for each(var propChain in e.pollTarget.getLastUpdated()) {
			//	update = true;
			//	this.valueMap[propChain] = e.pollTarget;
			//}
			
			update && this.dispatchEvent(new PollEvent(this.getUpdateEventType(), this));
		}
		
		private function cycleComplete(e:PollEvent) {
			if(this.numRegistriesPolled == this.registries.length) {
				this.numRegistriesPolled = 0;
			}
			
		}
		
		public override function whoAmI() {
			trace("regman");
		}
	}
	
}