Respond to Event

//native

/**

 * Respond to Event

 * RSVP to an event invitation as the connected account: accept, decline or tentatively accept, with an optional note to the organizer. For a recurring event, pass the series id to answer every occurrence or an instance id for one. Fails if the connected account isn't on the guest list.

 */

export async function main(

  auth: RT.Gcal,

  event_id: string,

  response_status: "accepted" | "declined" | "tentative",

  comment: string | undefined,

  calendar_id: string = "primary",

  send_updates: "all" | "externalOnly" | "none" = "all"

) {

  const base = `https://www.googleapis.com/calendar/v3/calendars/${encodeURIComponent(calendar_id || "primary")}/events/${event_id}`

  const headers = {

    Authorization: `Bearer ${auth.token}`,

    Accept: "application/json",

  }

  const get = await fetch(base, { headers })

  if (!get.ok) {

    throw new Error(`${get.status} ${await get.text()}`)

  }

  const event = await get.json()

  const attendees: any[] = event.attendees ?? []

  const me = attendees.find((a) => a.self)

  if (!me) {

    throw new Error(

      `The connected account is not a guest of event ${event_id}, so it has no invitation to answer`

    )

  }

  me.responseStatus = response_status

  if (comment) me.comment = comment

  const response = await fetch(`${base}?sendUpdates=${send_updates || "all"}`, {

    method: "PATCH",

    headers: { ...headers, "Content-Type": "application/json" },

    body: JSON.stringify({ attendees }),

  })

  if (!response.ok) {

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

  }

  return await response.json()

}