Create payment token for a given payment source

//native

type Paypal = {

  clientId: string;

  clientSecret: string;

};

async function getToken(auth: Paypal): Promise<string> {

  const url = new URL(`https://api-m.paypal.com/v1/oauth2/token`);

  const response = await fetch(url, {

    method: "POST",

    headers: {

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

    },

    body: new URLSearchParams({

      grant_type: "client_credentials",

    }),

  });

  if (!response.ok) {

    const text = await response.text();

    throw new Error(`Could not get token: ${response.status} ${text}`);

  }

  const json = await response.json();

  return json.access_token;

}

/**

 * Create payment token for a given payment source

 * Creates a Payment Token from the given payment source and adds it to the Vault of the associated customer.

 */

export async function main(

  auth: Paypal,

  PayPal_Request_Id: string,

  body: {

    customer?: { id?: string };

    payment_source: {

      card?: {

        id?: string;

        name?: string;

        number?: string;

        expiry?: string;

        security_code?: string;

        last_digits?: string;

        card_type?:

          | "VISA"

          | "MASTERCARD"

          | "DISCOVER"

          | "AMEX"

          | "SOLO"

          | "JCB"

          | "STAR"

          | "DELTA"

          | "SWITCH"

          | "MAESTRO"

          | "CB_NATIONALE"

          | "CONFIGOGA"

          | "CONFIDIS"

          | "ELECTRON"

          | "CETELEM"

          | "CHINA_UNION_PAY";

        type?: "CREDIT" | "DEBIT" | "PREPAID" | "STORE" | "UNKNOWN";

        brand?:

          | "VISA"

          | "MASTERCARD"

          | "DISCOVER"

          | "AMEX"

          | "SOLO"

          | "JCB"

          | "STAR"

          | "DELTA"

          | "SWITCH"

          | "MAESTRO"

          | "CB_NATIONALE"

          | "CONFIGOGA"

          | "CONFIDIS"

          | "ELECTRON"

          | "CETELEM"

          | "CHINA_UNION_PAY";

        billing_address?: {

          address_line_1?: string;

          address_line_2?: string;

          address_line_3?: string;

          admin_area_4?: string;

          admin_area_3?: string;

          admin_area_2?: string;

          admin_area_1?: string;

          postal_code?: string;

          country_code: string;

          address_details?: {

            street_number?: string;

            street_name?: string;

            street_type?: string;

            delivery_service?: string;

            building_name?: string;

            sub_building?: string;

          };

        };

      } & {

        verification_method?: string;

        experience_context?: {

          brand_name?: string;

          locale?: string;

          return_url?: string;

          cancel_url?: string;

          shipping_preference?: string;

          vault_instruction?: string;

        };

      };

      token?: { id: string; type: "BILLING_AGREEMENT"; attributes?: {} };

    };

    metadata?: unknown;

  },

) {

  const token = await getToken(auth);

  const url = new URL(

    `https://api-m.paypal.com/v3/vault/payment-tokens`,

  );

  const response = await fetch(url, {

    method: "POST",

    headers: {

      "PayPal-Request-Id": PayPal_Request_Id,

      "Content-Type": "application/json",

      Authorization: "Bearer " + token,

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}