Create routing rule

type Cloudflare = {

  token: string;

  email: string;

  key: string;

};

/**

 * Create routing rule

 * Rules consist of a set of criteria for matching emails (such as an email being sent to a specific custom email address) plus a set of actions to take on the email (like forwarding it to a specific destination address).

 */

export async function main(

  auth: Cloudflare,

  zone_identifier: string,

  body: {

    actions: {

      type: "drop" | "forward" | "worker";

      value: string[];

      [k: string]: unknown;

    }[];

    enabled?: true | false;

    matchers: {

      field: "to";

      type: "literal";

      value: string;

      [k: string]: unknown;

    }[];

    name?: string;

    priority?: number;

    [k: string]: unknown;

  }

) {

  const url = new URL(

    `https://api.cloudflare.com/client/v4/zones/${zone_identifier}/email/routing/rules`

  );

  const response = await fetch(url, {

    method: "POST",

    headers: {

      "X-AUTH-EMAIL": auth.email,

      "X-AUTH-KEY": auth.key,

      "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.json();

}