import * as timezoneData from 'moment-timezone/data/meta/latest.json'
import { getCountriesList } from '../../utils/countries'

interface TimezoneContent {
	name: string
	countries: string[]
}

interface TimezoneData {
	[key: string]: TimezoneContent
}

export function getCountryFromTimezone(): string | null {
	const countryCode = getCountryCodeFromTimezone()
	const countryList = getCountriesList()
	return countryList[countryCode] || null
}

export function getCountryCodeFromTimezone(): string {
	const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone
	return detectCountry(timezone)
}

export function getCountryCodeFromCountryName(countryName: string): string {
	const countryList = getCountriesList()
	const countryCode = Object.keys(countryList).find((key) => countryList[key] === countryName)
	return countryCode || ''
}

function detectCountry(timezone: string): string {
	const zoneData: TimezoneData = timezoneData.zones
	try {
		return zoneData[timezone].countries[0]
	} catch (err) {
		console.warn('default zone if not found')
	}
	return 'AE'
}