Get local taxes by tax code

//native

type Paylocity = {

	clientId: string

	clientSecret: string

}

/**

 * Get local taxes by tax code

 * Returns all local taxes with the provided tax code for the selected employee.

 */

export async function main(

	auth: Paylocity,

	companyId: string,

	employeeId: string,

	taxCode: string

) {

	const url = new URL(

		`https://dc1prodgwext.paylocity.com/api/v2/companies/${companyId}/employees/${employeeId}/localTaxes/${taxCode}`

	)

	const response = await fetch(url, {

		method: 'GET',

		headers: {

			Authorization:

				'Bearer ' +

				(await getOAuthToken(auth, 'https://dc1prodgwext.paylocity.com/public/security/v1/token'))

		},

		body: undefined

	})

	if (!response.ok) {

		const text = await response.text()

		throw new Error(`${response.status} ${text}`)

	}

	return await response.json()

}

async function getOAuthToken(auth: Paylocity, tokenUrl: string): Promise<string> {

	const params = new URLSearchParams({

		grant_type: 'client_credentials',

		client_id: auth.clientId,

		client_secret: auth.clientSecret

	})

	const response = await fetch(tokenUrl, {

		method: 'POST',

		headers: {

			Authorization: 'Basic ' + btoa(`${auth.clientId}:${auth.clientSecret}`),

			'Content-Type': 'application/x-www-form-urlencoded'

		},

		body: params.toString()

	})

	if (!response.ok) {

		const text = await response.text()

		throw new Error(`OAuth token request failed: ${response.status} ${text}`)

	}

	const data = await response.json()

	return data.access_token

}