tencent cloud service - invoice ocr api

tencent_cloud_invoice_ocr.rb

require 'net/http'
require 'openssl'
require 'base64'
require 'json'

appid = 'APP_ID'
secret_id = 'SECRET_ID'
secret_key = 'SECRET_KEY'
current_time = Time.now.to_i
expired_time = current_time + 24 * 60 * 60
once = (rand * 10000000).to_i

api_url = 'https://recognition.image.myqcloud.com/ocr/invoice'

image_url = 'THE_INVOICE_IMAGE_URL'

sign = "a=#{appid}&b=&k=#{secret_id}&e=#{expired_time}&t=#{current_time}&r=#{once}&f="
encrypted_sign = OpenSSL::HMAC.digest('sha1', secret_key, sign)
authorization = Base64.strict_encode64("#{encrypted_sign}#{sign}")


uri = URI(api_url)

Net::HTTP.start(uri.host, uri.port, use_ssl: true, verify_mode: OpenSSL::SSL::VERIFY_NONE) do |http|

  request = Net::HTTP::Post.new uri.request_uri
  request.add_field('Content-Type', 'application/json')
  request.add_field('Authorization', authorization)

  request.body = {
    appid: appid,
    url: image_url
  }.to_json

  response = http.request request

  puts response
  puts response.body
end