owner.ts
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owner.ts
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	import { Policy, Context, Query, CollectionItem } from "../../main";
	import DenyAll from "../../datastore/deny-all";
	import { ItemMetadata } from "../../chip-types/collection-item";

	export default class Owner extends Policy {
	static type_name = "owner";
	async _getRestrictingQuery(context: Context) {
	if (context.user_id) {
	return Query.fromSingleMatch({
	"_metadata.created_by": { $eq: context.user_id },
	});
	}
	return new DenyAll();
	}
	async checkerFunction(
	context: Context,
	item_getter: () => Promise<CollectionItem>
	) {
	const response = await item_getter();
	if (
	context.user_id &&
	context.user_id ===
	((response as unknown) as {
	_metadata: ItemMetadata;
	})._metadata.created_by
	) {
	return Policy.allow("you are who created this item");
	} else {
	return Policy.deny("you are not who created this item");
	}
	}
	isItemSensitive = async () => true;
	}