/**
 * WordPress dependencies
 */
import { createSelector } from '@safe-wordpress/data';

/**
 * External dependencies
 */
import { find } from 'lodash';
import { EMPTY_ARRAY } from '@nab/utils';
import type {
	Account,
	AccountMode,
	FastSpringProduct,
	Invoice,
	License,
	Maybe,
	Quota,
	Site,
	SiteId,
	SubscriptionId,
	SubscriptionPlan,
	SubscriptionPeriod,
	SubscriptionState,
	FastSpringProductId,
} from '@nab/types';

/**
 * Internal dependencies
 */
import { State } from './types';

export function getAccount( state: State ): Account {
	return state.account;
}

export function getSites(
	state: State,
	id?: SubscriptionId
): ReadonlyArray< Site > {
	if ( ! id ) {
		return EMPTY_ARRAY;
	}
	return state.sites;
}

export function getSite( state: State, id: SiteId ): Maybe< Site > {
	return find( state.sites, { id } );
}

export function getInvoices(
	state: State,
	id: SubscriptionId
): ReadonlyArray< Invoice > {
	if ( ! id ) {
		return EMPTY_ARRAY;
	}
	return state.invoices;
}

export const getSubscriptionQuota = createSelector(
	( state: State ): Quota => {
		const { quota, quotaExtra, quotaPerMonth } = state.account;

		const availableQuota = quota + quotaExtra;
		const percentage = Math.floor(
			( 100 * ( availableQuota + 0.1 ) ) / quotaPerMonth
		);

		return {
			mode: 'subscription',
			availableQuota,
			percentage,
		};
	},
	( state: State ) => [ state.account ]
);

export function getSubscriptionId( state: State ): SubscriptionId {
	return state.account.subscription;
}

export function getSubscriptionAddons(
	state: State
): ReadonlyArray< FastSpringProductId > {
	return state.account.addons || EMPTY_ARRAY;
}

export function getFullname( state: State ): string {
	return state.account.fullname;
}

export function getFirstname( state: State ): string {
	return state.account.firstname;
}

export function getLastname( state: State ): string {
	return state.account.lastname;
}

export function getEmail( state: State ): string {
	return state.account.email;
}

export function getStartDate( state: State ): string {
	return state.account.startDate;
}

export function getSubscriptionProduct(
	state: State
): FastSpringProduct[ 'id' ] {
	return state.account.productId;
}

export function getPlan( state: State ): 'free' | SubscriptionPlan {
	return state.account.plan;
}

export function getLicense( state: State ): License {
	return state.account.license;
}

export function getPhoto( state: State ): string {
	return state.account.photo;
}

export function getProductDisplay( state: State ): string {
	return state.account.productDisplay;
}

export function getMode( state: State ): AccountMode {
	return state.account.mode;
}

export function getPeriod( state: State ): SubscriptionPeriod {
	return state.account.period;
}

export function getExtraQuotaUnits( state: State ): number {
	return (
		state.account.addonDetails[
			'nab-pageviews-monthly' as FastSpringProductId
		] ??
		state.account.addonDetails[
			'nab-pageviews-yearly' as FastSpringProductId
		] ??
		0
	);
}

export function getState( state: State ): SubscriptionState {
	return state.account.state;
}

export function getDeactivationDate( state: State ): string {
	return state.account.deactivationDate;
}

export function getNextChargeDate( state: State ): string {
	return state.account.nextChargeDate;
}

export function getNextChargeTotal( state: State ): string {
	return state.account.nextChargeTotal;
}

export function getSitesAllowed( state: State ): number {
	return state.account.sitesAllowed;
}

export function getCurrency( state: State ): string {
	return state.account.currency;
}

export function getUrlToManagePayments( state: State ): string {
	return state.account.urlToManagePayments;
}

export function isAgency( state: State ): boolean {
	return !! state.account.isAgency;
}

export function isLocked( state: State ): boolean {
	return !! state.isPageLocked;
}

export function isAgencyFullViewEnabled( state: State ): boolean {
	return isAgency( state ) && !! state.isAgencyFullViewEnabled;
}