/**
 * External dependencies
 */
import type { Experiment } from '@nab/types';

export type ExtensionAction = SetExtension< ExtensionName > | RemoveExtension;

type ExtensionName = keyof Extensions;
type Extensions = Required< Required< Experiment >[ 'extensions' ] >;

export function setExtension< TName extends ExtensionName >(
	name: TName,
	value: Extensions[ TName ]
): SetExtension< TName > {
	return {
		type: 'SET_EXTENSION',
		name,
		value,
	};
}

export function removeExtension( name: ExtensionName ): RemoveExtension {
	return {
		type: 'REMOVE_EXTENSION',
		name,
	};
}

// =====
// TYPES
// =====

type SetExtension< TName extends ExtensionName > = {
	readonly type: 'SET_EXTENSION';
	readonly name: TName;
	readonly value: Extensions[ TName ];
};

type RemoveExtension = {
	readonly type: 'REMOVE_EXTENSION';
	readonly name: ExtensionName;
};