require 'yaml'
require_relative 'common'
require_relative 'tester'
require_relative 'hash_methods'

module Soaspec
  # Wraps around Savon client defining default values dependent on the soap request
  class BasicSoapHandler < Tester
    # Savon client used to make SOAP calls
    attr_accessor :client
    # Namespaces used in XML body
    attr_accessor :namespaces
    # SOAP Operation to use by default
    attr_accessor :default_operation

    # Options to log xml request and response
    def logging_options
      {
        log: true, # See request and response. (Put this in traffic file)
        log_level: :debug,
        logger: file_logger,
        pretty_print_xml: true # Prints XML pretty
      }
    end

    # Default Savon options
    def default_options
      {
          ssl_verify_mode: :none,
          follow_redirects: true, # Necessary for many API calls
          soap_version: 2, # use SOAP 1.2. You will get 415 error if this set to default
          raise_errors: false
      }
    end

    # Add values to here when extending this class
    def class_options
      {
      }
    end

    # Setup object to handle communicating with a particular SOAP WSDL
    # @param [Hash] specific_options Options defining SOAP request. WSDL, authentication, see http://savonrb.com/version2/globals.html for list of options
    def initialize(name, specific_options = {})
      super
      options = default_options.merge logging_options
      options.merge! class_options
      options.merge!(specific_options)
      @client = Savon.client(options)
      self.namespaces = {}
      @name = name
    end

    # Sends a call to the API (is being made obsolete)
    # @param [Hash] options Dictionary of key value pairs specifying what API call to make
    # @return [SavonResponse] Savon response from which areas (header, body, etc) of the SOAP response can be accessed
    # def call(options)
    #   test_values = options[:overide_values]['request'] || {} # Empty hash if no specific request values are set
    #   options[:operation] ||= self.default_operation
    #   # Erb parses template file, executing Ruby code in `<% %>` blocks to work out final request
    #   render_body = ERB.new(options[:template]).result(binding)
    #   @client.call(options[:operation], xml: render_body ) # Call the SOAP operation with the request XML provided
    # end

    def name(name)
      @test_values = {}
      @test_name = name
      self
    end

    def override(request_parameters)
      @test_values = request_parameters
      self
    end

    # Used in together with Exchange request that passes such override parameters
    def make_request(override_parameters)
      test_values = override_parameters # Used in Erb
      # Erb parses template file, executing Ruby code in `<% %>` blocks to work out final request
      if @request_option == :template
        test_values = test_values.transform_keys_to_symbols # Either string or symbol
        request_body = File.read('template/' + template_name + '.xml')
        render_body = ERB.new(request_body).result(binding)
        @client.call(default_operation, xml: render_body ) # Call the SOAP operation with the request XML provided
      elsif @request_option == :hash
        @client.call(default_operation, message: @default_hash.merge(test_values))
      end
    end

    def to_s
      Soaspec::Environment.api_handler = self
      @name
    end

    def include?(value)
      @xml_response.include? value
    end

    def default_hash=(hash)
      @request_option = :hash
      @default_hash = hash
    end

    def status_code_for(response)
      response.http.code
    end

    # Override this to specify elements that must be present in the response
    # Make it an Array of keys
    def mandatory_elements
      nil
    end

  end
end