Download all uploaded documents from UOL accounting api

get_documents.rb

#!/usr/bin/env ruby

require 'net/http'
require 'json'

def fetch(uri, token)
  uri = URI(uri)

  response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
    request = Net::HTTP::Get.new(uri)
    request['Authorization'] = "Basic #{token}"
    request['Accept'] = 'application/json'

    response = http.request request
  end

  JSON.parse response.body
end

def traverse(url, token, &block)
  response = fetch(url, token)

  response['items'].each do |item|
    yield item
  end

  next_page_url = response.dig('_meta', 'pagination', 'next')
  traverse(next_page_url, token, &block) if next_page_url
end

db_name = ARGV.first
token = ARGV.last

traverse("https://#{db_name}.ucetnictvi.uol.cz/api/v1/uploaded_documents", token) do |item|
  uri = URI item['file']
  name = uri.path.split('/').last

  `wget -O #{name} "#{item['file']}"`
end

You need to have ruby and wget installed. The script has to be chmoded to be executable(chmod +x get_documents.rb)

Then to start it: ./get_documents.rb <your uol db code> <your uol api token>. All documents are downloaded into current directory.