Update custom field value

type Jira = {

  username: string;

  password: string;

  domain: string;

};

/**

 * Update custom field value

 * Updates the value of a custom field on one or more issues.

 */

export async function main(

  auth: Jira,

  fieldIdOrKey: string,

  generateChangelog: string | undefined,

  body: { updates?: { issueIds: number[]; value: { [k: string]: unknown } }[] }

) {

  const url = new URL(

    `https://${auth.domain}.atlassian.net/rest/api/2/app/field/${fieldIdOrKey}/value`

  );

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

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

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "PUT",

    headers: {

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

      Authorization: "Basic " + btoa(`${auth.username}:${auth.password}`),

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}