Fill forms in a document on Nextcloud. The FormField type has to be specified.

import axios from "axios"

export async function main(

  nextcloud: RT.Nextcloud,

  templateFileId: number,

  formFieldValue: string, 

  destination: string, 

  fields: { [index: string]: string },

  convertToPdf: boolean = false,

) {

  let data: any = { fields: {}, destination };

  const selectors: { [index: string]: string } = {

    id: 'ById',

    title: 'ByAlias',

    index: 'ByIndex',

    tag: 'ByTag',

  }

  const selector: string = selectors[formFieldValue] ?? 'ById'

  console.debug('SELECTOR ----', selector)

  data.fields = Object.keys(fields).reduce((carry: { [index: string]: object }, key: string) => {

    carry['ContentControls.' + selector + '.' + key] = { content: fields[key] }

    return carry

  }, {});

  if (convertToPdf) {

    data.convert = 'pdf'

  }

  console.debug('data', data)

  const url = nextcloud.baseUrl + '/ocs/v2.php/apps/richdocuments/api/v1/template/fields/fill/' + templateFileId

  const config = {

    auth: {

      username: nextcloud.userId,

      password: nextcloud.token,

    },

    headers: {

      'content-type': 'application/json',

      'ocs-apirequest': true,

    },

  }

  console.debug('config', config)

  try {

    const resp = await axios.post(url, data, config)

    console.debug('RESPONSE', resp.data)

    return {

      data: resp.data,

    }

  } catch(e) {

    console.debug('error', e)

  }

  return {}

}