themselves.ts
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themselves.ts
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	import { Context, Policy, Query } from "../../main";
	import { CollectionItem } from "../../chip-types/collection-item";

	export default class Themselves extends Policy {
	static type_name = "themselves";
	isItemSensitive = async () => true;
	async _getRestrictingQuery(context: Context) {
	return Query.fromSingleMatch({
	id: { $eq: context.user_id },
	});
	}
	async checkerFunction(
	context: Context,
	item_getter: () => Promise<CollectionItem>
	) {
	const user_id = (await item_getter()).id;
	if (context.user_id !== user_id) {
	return Policy.deny(`you are not the user of id ${user_id}.`);
	}
	return Policy.allow("you are the user in question");
	}
	}