module AwsKeys

# File lib/aws_keys.rb, line 7
def self.load(profile: nil, yml_file: ENV['HOME'] + "/.aws.yml")

  aws_credential_path = ENV['HOME'] + "/aws/credentials"

  case
  when !(ENV.keys & %w[AWS_ACCESS_KEY AWS_SECRET_KEY]).empty?
   {
      "aws_access_key"=>ENV["AWS_ACCESS_KEY"], 
      "aws_secret_key"=>ENV["AWS_SECRET_KEY"]
    }
  when File.exist?(yml_file)
    data = YAML.load_file(yml_file)
    profile.nil? ? data : data[profile]
  when File.exist?(aws_credential_path)
    file = IniFile.load(aws_credential_path)
    profile.nil? ? file["default"] : file[profile]
  else
    fail NoAwsKeys, "None of ENV variables, ~/aws/credentials or aws.yml were found"
  end
end