const chs = "/"; // Channel separator


class Channel {
	constructor(context,name) {
		this.context = context;
		this._name = name; // Full name
	}
	name(name) {
		if(name == undefined) return this._name;
		return this._name + chs + name;
	}
	channel(...names) { // Sub channel
		var name = names.join("/");
		return new Channel(this.context,this.name(name));
	}
	on(sname,callback,order) {
		var name = this.name(sname);
		var listener = this.context.get(name,true);
		listener.callbacks.push({name,callback,order});
		//this.context.on(this.name(name),cb,order);
		
		return this;
	}
	after(name,cb) {
		this.on(this.name(name),cb,1000);
		return this;
	}
	emit(name,...args){
		return this.context.eventual.emit(this.name(name),...args);
	}
	propagate(name,...args) {
		// special case
		return this.context.eventual.propagate(this.name(name),this._name,...args);
	}
	set(name,value) {
		this.context.eventual.set(this.name(name),value);
		return this;
	}
	watch(sname,callback) {
		var name = this.name(sname);
		if(this.context.watchers[name]== undefined) this.context.watchers[name]= [];
		this.context.watchers[name].push(callback);
		callback(this.context.eventual._events.store[name]);

		//this.context.watch(this.name + ":" + name,cb);
	}


}

module.exports = Channel;