# frozen_string_literal: true

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require "azure/core/auth/signer"

module Azure::Storage::Common::Core
  module Auth
    class SharedAccessSignatureSigner < Azure::Core::Auth::Signer
      attr :account_name, :sas_token
      attr_accessor :api_ver

      # Public: Initialize the Signer with a SharedAccessSignature
      #
      # @param api_ver      [String] The api version of the service.
      # @param account_name [String] The account name. Defaults to the one in the global configuration.
      # @param sas_token    [String] The sas token to be used for signing
      def initialize(api_ver, account_name = "", sas_token = "")
        if account_name.empty? || sas_token.empty?
          client = Azure::Storage::Common::Client.create_from_env
          account_name = client.storage_account_name if account_name.empty?
          sas_token = client.storage_sas_token if sas_token.empty?
        end
        @api_ver = api_ver
        @account_name = account_name
        @sas_token = sas_token
      end

      def sign_request(req)
        req.uri = URI.parse(req.uri.to_s + (req.uri.query.nil? ? "?" : "&") + sas_token.sub(/^\?/, "") + "&api-version=" + @api_ver)
        req
      end
    end
  end
end