import { PolicyReasons } from './usage';
import { BookingError } from './api';
import { formattingLocale } from './dateTime';
import * as React from 'react';
import { __ } from '@wordpress/i18n';
import type { BookingApi } from './api';
export interface PriceSegment {
    start: string;
    end: string;
    minutes: number;
    hourly_rate: number;
    base_amount: number;
    discount_amount: number;
    final_amount: number;
    applied_rule_id: number;
}
export interface Price {
    participant_share_applies?: boolean;
    base_amount: number;
    discount_amount: number;
    final_amount: number;
    currency: string;
    participant_count: number;
    eligible_member_count?: number;
    non_member_count?: number;
    segments: PriceSegment[];
}
// ISO 4217 minor units; display and major-unit input conversion never use floating-point money arithmetic.
export function currencyDigits(currency: string): number { return ['BIF', 'CLP', 'DJF', 'GNF', 'ISK', 'JPY', 'KMF', 'KRW', 'PYG', 'RWF', 'UGX', 'UYI', 'VND', 'VUV', 'XAF', 'XOF', 'XPF'].includes(currency) ? 0 : ['BHD', 'IQD', 'JOD', 'KWD', 'LYD', 'OMR', 'TND'].includes(currency) ? 3 : ['CLF', 'UYW'].includes(currency) ? 4 : 2; }
export function majorText(minor: number, currency: string): string { const digits = currencyDigits(currency), value = BigInt(Math.abs(minor)), factor = 10n ** BigInt(digits); return (minor < 0 ? '-' : '') + String(value / factor) + (digits ? '.' + String(value % factor).padStart(digits, '0') : ''); }
export function minorAmount(value: string, currency: string, credit = false): number { const digits = currencyDigits(currency); const normalized = value.trim().replace(',', '.'); if (!/^\d+(?:\.\d+)?$/.test(normalized))
    throw new Error(credit ? __('Enter a positive amount.', 'abece-booking') : __('Enter a non-negative hourly price.', 'abece-booking')); const [whole, fraction = ''] = normalized.split('.'); if (fraction.length > digits)
    throw new Error(credit ? __('The amount has too many decimal places for this currency.', 'abece-booking') : __('The price has too many decimal places for this currency.', 'abece-booking')); const result = BigInt(whole) * 10n ** BigInt(digits) + BigInt(fraction.padEnd(digits, '0') || '0'); if (result > BigInt(Number.MAX_SAFE_INTEGER))
    throw new Error(credit ? __('The credit balance exceeds the supported money range.', 'abece-booking') : __('The configured price exceeds the supported money range.', 'abece-booking')); return Number(result); }
export function money(minor: number, currency: string): string { const text = majorText(Math.abs(minor), currency), [whole, fraction] = text.split('.'); const locale = formattingLocale(); const group = new Intl.NumberFormat(locale, { maximumFractionDigits: 0 }).format(BigInt(whole)); const decimal = new Intl.NumberFormat(locale).formatToParts(1.1).find(p => p.type === 'decimal')?.value ?? '.'; return (minor < 0 ? '−' : '') + group + (fraction ? decimal + fraction : '') + ' ' + currency; }
export function useQuote(api: BookingApi, route: string, payload: Record<string, unknown>, ready: boolean) {
    const key = ready ? JSON.stringify(payload) : '';
    const [revision, refresh] = React.useReducer(n => n + 1, 0);
    const [state, setState] = React.useState<{
        key: string;
        price: Price | null;
        error: string;
        pending: boolean;
        reasons?: BookingError['data'];
    }>({ key: '', price: null, error: '', pending: false });
    React.useEffect(() => {
        let alive = true;
        if (!key) {
            setState({ key, price: null, error: '', pending: false });
            return;
        }
        setState({ key, price: null, error: '', pending: true });
        const timer = setTimeout(() => { api.request<Price>(route, 'POST', JSON.parse(key)).then(price => { if (alive)
            setState({ key, price, error: '', pending: false }); }).catch(e => { if (alive)
            setState({ key, price: null, error: e.message, pending: false, reasons: e instanceof BookingError ? e.data : undefined }); }); }, 200);
        return () => { alive = false; clearTimeout(timer); };
    }, [api, route, key, revision]);
    return { ...(state.key === key ? state : { key, price: null, error: '', pending: !!key }), refresh };
}
export function PriceSummary({ price, members = false }: {
    price: Price;
    members?: boolean;
}) { return <dl className="asb-price-summary"><dt>{__('Base price', 'abece-booking')}</dt><dd>{money(price.base_amount, price.currency)}</dd>{members && <><dt>{__('Eligible members', 'abece-booking')}</dt><dd>{price.eligible_member_count ?? 0} / {price.participant_count}</dd></>}{price.discount_amount > 0 && <><dt>{__('Member benefit', 'abece-booking')}</dt><dd>−{money(price.discount_amount, price.currency)}</dd></>}<dt>{__('Amount due', 'abece-booking')}</dt><dd><strong>{money(price.final_amount, price.currency)}</strong></dd></dl>; }
export function QuoteView({ quote, members }: {
    quote: ReturnType<typeof useQuote>;
    members?: boolean;
}) { return <div aria-live="polite">{quote.pending && <p role="status">{__('Calculating price…', 'abece-booking')}</p>}{quote.error && <><p role="alert">{quote.error}</p><PolicyReasons data={quote.reasons}/></>}{quote.price && <><PriceSummary price={quote.price} members={members}/>{false}</>}</div>; }