import { defineMetadata, getMetadata } from "../core/metadata.ts";

const KEY = "muddle:render-ahead";

export type RenderAheadSource = string[] | (() => Promise<string[]> | string[]);

export function RenderAhead(routes: RenderAheadSource): MethodDecorator {
	return (target, propertyKey) => {
		defineMetadata(KEY, routes, target, propertyKey);
	};
}

export function getRenderAhead(target: object, propertyKey: string): RenderAheadSource | undefined {
	return getMetadata(KEY, target, propertyKey) as RenderAheadSource | undefined;
}