type Matrix = {

  baseUrl: string;

  token: string;

};

export async function main(

  matrix_res: Matrix,

  room_id: string,

  type: string,

  state_key?: string,

  json_content: string,

) {

  let url = `${matrix_res.baseUrl}/_matrix/client/v3/rooms/${encodeURIComponent(

    room_id,

  )}/state/${encodeURIComponent(type)}/`;

  if (state_key) {

    url += encodeURIComponent(state_key);

  }

  const resp = await fetch(url, {

    method: "PUT",

    headers: {

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

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

    },

    body: json_content,

  });

  if (!resp.ok) {

    throw Error(`Failed to read room state: Error HTTP${resp.status}`);

  }

  return await resp.json();

}