type Abstractapi = {

	apiKey: string

}

export async function main(

	resource: Abstractapi,

	amount: number,

	countryCode: string,

	vatCategory?: string

) {

	const queryParams = new URLSearchParams({

		api_key: resource.apiKey,

		amount: amount.toString(),

		country_code: countryCode

	})

	if (vatCategory) {

		queryParams.append('vat_category', vatCategory)

	}

	const endpoint = `https://vat.abstractapi.com/v1/calculate?${queryParams.toString()}`

	const response = await fetch(endpoint, {

		method: 'GET'

	})

	if (!response.ok) {

		throw new Error(`HTTP error! status: ${response.status}`)

	}

	const data = await response.json()

	return data

}