class Item
{
	constructor(playerId, itemId, room)
	{
		this.playerId = playerId;
		this.itemId = itemId;
		this.updateKey();
		this.details = {};
		this.room = room;

		this.handlers = [];
	}

	updateKey()
	{
		this.key = this.playerId + "_" + this.itemId;
	}

	getJSON()
	{
		var ret = {...this.details, player_id:this.playerId, item_id:this.itemId, key:this.key};
		delete ret.__change_ownership_player__;
		return ret;
	}

	detailsUpdated()
	{
		for (var h of this.handlers)
		{
			if (typeof h.itemUpdated === "function") h.itemUpdated();
		}
	}

	getHandler(handlerType, createIfNotFound = false)
	{
		for (var h of this.handlers)
		{
			if (h instanceof handlerType)
			{
				return h;
			}
		}
		if (!createIfNotFound) return null;
		let handler = new handlerType(this.room, this);
		if (typeof handler.start === "function") handler.start();
		this.handlers.push(handler);
		return handler;
	}

	start()
	{
	}

	stop()
	{
		for (var h of this.handlers)
		{
			if (typeof h.stop === "function") h.stop();
		}
		this.handlers.length = 0;
	}

	removeHandler(h)
	{
		const index = this.handlers.indexOf(h);
		if (index != -1)
		{
			this.handlers.splice(index, 1);
			if (typeof h.stop === "function") h.stop();
		}
	}
}


module.exports = Item;