Convert old DVR cassettes to the new format

convert.rb

require 'json'
require 'base64'

unless input = ARGV.first
  puts 'Run with `ruby convert.rb path_to_your_cassette.json`' and return
end

def process(r)
  return unless r && (body = r['body']) && (content_type = r['headers']['Content-Type'])
  if content_type.start_with?('text/')
    r['body'] = Base64.decode64(body)
  elsif content_type.start_with?('application/json')
    r['body'] = JSON.load(Base64.decode64(body))
  end
end

json = JSON.load(File.read(input))
json['interactions'].each do |interaction|
  process interaction['request']
  process interaction['response']
end

puts JSON.pretty_generate(json)