converts vcr cassettes to webmock 2.0-compatible format

vcr-webmock-2.rb

# converts URIs in vcr cassettes from uri-based basic auth
# to header-based basic auth to be compatible with webmock 2.0.
# it will create a basic auth header with an ERB tag
# to keep user and password be editable.
#
#   Authorization: Basic <%= Base64.encode64("user:password").chomp %>
#
# may not work if using VCR's filter_sensitive_data.
# in that case use https://gist.github.com/ujh/594c99385b6cbe92e32b1bbfa8578a45
#
# usage:
#
#   env CASSETTES_PATH=spec/fixtures/vcr_cassettes ruby vcr-webmock-2.rb
#
# should help resolve https://github.com/vcr/vcr/issues/570

require 'yaml'
require 'uri'
require 'base64'

unless File.directory? ENV['CASSETTES_PATH']
  puts "Directory not found: #{ENV['CASSETTES_PATH']}"
  exit 1
end

Dir["#{ENV['CASSETTES_PATH']}/**/*"].each do |path|
  converted = false

  next if File.directory? path

  cassette = YAML.load File.read path
  cassette['http_interactions'].each do |http_interaction|
    request = http_interaction['request']
    uri     = URI.parse request['uri']

    next if uri.userinfo.nil?
    converted = true

    erb = "Basic <%= Base64.encode64(#{uri.userinfo.inspect}).chomp %>"
    request['headers']['Authorization'] = erb

    uri.userinfo = ''
    request['uri'] = uri.to_s

    http_interaction['request'] = request
  end

  File.open path, 'w' do |file|
    file.write cassette.to_yaml
    puts "Converted #{path}"
  end if converted
end