/**
 * WordPress dependencies
 */
import { useDispatch, useSelect } from '@safe-wordpress/data';

/**
 * External dependencies
 */
import { store as NAB_DATA } from '@nab/data';
import type { Experiment, Maybe } from '@nab/types';

export function useExperimentAttribute< K extends keyof Experiment >(
	attr: K
): Maybe< Experiment[ K ] > {
	const exp = useSelect(
		( select ) =>
			select( NAB_DATA ).getPageAttribute( 'editor/activeExperiment' ),
		[]
	);
	const value = useSelect(
		( select ) =>
			!! exp
				? select( NAB_DATA ).getExperimentAttribute( exp, attr )
				: undefined,
		[ exp, attr ]
	);
	return value;
}

export function useAreUniqueResultsVisible(): [
	boolean,
	( visible: boolean ) => void,
] {
	const value = useSelect( ( select ) => {
		const exp = select( NAB_DATA ).getPageAttribute(
			'editor/activeExperiment'
		);
		return exp ? select( NAB_DATA ).areUniqueResultsVisible( exp ) : false;
	}, [] );

	const { setPageAttribute } = useDispatch( NAB_DATA );
	const setValue = ( visible: boolean ) =>
		setPageAttribute( 'results/shouldShowUniqueResults', visible );

	return [ value, setValue ];
}

export function useHasUniqueResults(): boolean {
	return useSelect( ( select ) => {
		const exp = select( NAB_DATA ).getPageAttribute(
			'editor/activeExperiment'
		);
		return exp
			? select( NAB_DATA ).areUniqueResultsAvailable( exp )
			: false;
	}, [] );
}

// DEPRECATED. Eventually, all tests will have unique results, so you can get rid of this.
export function useMayHaveUniqueResults(): boolean {
	return useSelect( ( select ) => {
		const expId = select( NAB_DATA ).getPageAttribute(
			'editor/activeExperiment'
		);
		const exp = select( NAB_DATA ).getExperiment( expId );
		return ! exp?.endDate || '2025-06-16' <= exp.endDate;
	}, [] );
}