Update subscription

//native

type Mollie = {

  token: string;

};

/**

 * Update subscription

 * Update an existing subscription.

Canceled subscriptions cannot be updated.

For an in-depth explanation of each parameter, refer to the [Create subscription](create-subscription) endpoint.

> 🔑 Access with

>

> API key

>

> Access token with **subscriptions.write**

 */

export async function main(

  auth: Mollie,

  customerId: string,

  id: string,

  testmode: string | undefined,

  body: {

    amount?: { currency: string; value: string };

    description?: string;

    interval?: string;

    startDate?: string;

    times?: number;

    metadata?: string;

    webhookUrl?: string;

    mandateId?: string;

  },

) {

  const url = new URL(

    `https://api.mollie.com/v2/customers/${customerId}/subscriptions/${id}`,

  );

  for (const [k, v] of [["testmode", testmode]]) {

    if (v !== undefined && v !== "" && k !== undefined) {

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "PATCH",

    headers: {

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

      Authorization: "Bearer " + auth.token,

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.text();

}