package bin.srsc;

import macros.rpc.RPC;
import lib.KVStore;
import kernel.net.Package;
import kernel.ps.ProcessHandle;
import kernel.ps.Process;

using tink.CoreApi;

/**
	The SiteRessourceController is responsible for the management of ressources on the site.
	It makes sure that ressources are have a unique id and that they are not duplicated.
	It also keeps track of the responsible NetID for each ressource. Kinda like a DNS.
**/
@:build(macros.rpc.RPC.buildRPC())
class SiteRessourceController implements Process {
	private var handle:ProcessHandle;
	private var ressources:Map<String, NetworkID>;

	public function new() {}

	public function run(handle:ProcessHandle) {
		this.handle = handle;

		load();

		RPC.generateRPCPackageHandle();
	}

	@rpc
	public function register(name:String, netID:NetworkID):Bool {
		if (ressources.exists(name) && ressources.get(name) != netID) {
			return false;
		}

		ressources.set(name, netID);
		save();
		return true;
	}

	@rpc
	public function unregister(name:String):Void {
		if (ressources.exists(name)) {
			ressources.remove(name);
		}
		save();
	}

	@rpc
	public function get(name:String):Null<NetworkID> {
		return ressources.get(name);
	}

	@rpc
	public function list():Array<String> {
		return [for (k in ressources.keys()) k];
	}

	private function load() {
		var store = KVStore.getStoreForClass();
		var data:Null<Map<String, NetworkID>> = store.get("ressources");

		if (data != null) {
			this.ressources = data;
		} else {
			this.ressources = new Map<String, NetworkID>();
		}
	}

	private function save() {
		var store = KVStore.getStoreForClass();
		store.set("ressources", this.ressources);
		store.save();
	}
}