Generate OAuth access token

//native

type Pinterest = {

  token: string;

};

/**

 * Generate OAuth access token

 * Generate an OAuth access token by using an authorization code or a refresh token.

 */

export async function main(

  auth: Pinterest,

  body: {

    grant_type: "authorization_code" | "refresh_token" | "client_credentials";

  },

) {

  const url = new URL(`https://api.pinterest.com/v5/oauth/token`);

  const response = await fetch(url, {

    method: "POST",

    headers: {

      "Content-Type": "application/x-www-form-urlencoded",

      Authorization: "Bearer " + auth.token,

    },

    body: new URLSearchParams(body as Record<string, string>),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}