/**
 * External dependencies
 */
import type { ExperimentId, Maybe } from '@nab/types';

/**
 * Internal dependencies
 */
import { EMPTY_ARRAY } from '../constants';
import type { ClickEvent, State, VisitedPage } from './types';

export function getPosition( state: State ): State[ 'position' ] {
	return state.position;
}

export function getTab( state: State ): State[ 'tab' ] {
	return state.tab;
}

export function isAwaitingGdpr( state: State ): boolean {
	return (
		!! getSettings( state ).gdprCookie.name && 'ready' !== state.gdprStatus
	);
}

export function getStatus( state: State ): State[ 'status' ] {
	return state.status;
}

export function getPages( state: State ): State[ 'navigation' ] {
	return state.navigation;
}

export function getCloudStatus( state: State ): State[ 'cloudStatus' ] {
	return state.cloudStatus;
}

export function getSettings( state: State ): State[ 'settings' ] {
	return state.settings;
}

export function getAlternative(
	state: State
): State[ 'cookies' ][ 'alternative' ] {
	return state.cookies.alternative;
}

export function getSegmentation(
	state: State
): State[ 'cookies' ][ 'segmentation' ] {
	return state.cookies.segmentation;
}

export function getActiveSegments(
	state: State,
	experimentId: ExperimentId
): Maybe< ReadonlyArray< number > > {
	return getSegmentation( state ).activeSegments[ experimentId ];
}

export function getNewAlternative(
	state: State
): State[ 'newCookies' ][ 'alternative' ] {
	return state.newCookies.alternative;
}

export function getNewSegmentation(
	state: State
): State[ 'newCookies' ][ 'segmentation' ] {
	return state.newCookies.segmentation;
}

export function getNewActiveSegments(
	state: State,
	experimentId: ExperimentId
): Maybe< ReadonlyArray< number > > {
	return getNewSegmentation( state ).activeSegments[ experimentId ];
}

export function getViews( state: State ): State[ 'cookies' ][ 'views' ] {
	return state.cookies.views;
}

export function hasViews( state: State, experimentId: ExperimentId ): boolean {
	return !! getViews( state )[ experimentId ];
}

export function getEvents( state: State ): VisitedPage[ 'events' ] {
	return state.navigation[ 0 ]?.events || EMPTY_ARRAY;
}

export function getHeatmapClicks(
	state: State
): VisitedPage[ 'heatmapClicks' ] {
	return state.navigation[ 0 ]?.heatmapClicks || EMPTY_ARRAY;
}

export function getHighlightedClick( state: State ): Maybe< ClickEvent > {
	return state.highlightedClick;
}