require 'uri'
require 'json/add/regexp'
require 'pact/logging'
require 'pact/consumer_contract'
require 'pact/mock_service/client'
require 'pact/consumer_contract/consumer_contract_writer'

module Pact
  module Messages
    module Consumer
      class ContractBuilder
        include Pact::Logging

        attr_reader :consumer_name, :provider_name

        def initialize(attributes)
          @consumer_name             = attributes.fetch(:consumer_name)
          @provider_name             = attributes.fetch(:provider_name)
          @consumer_contract_details = {
            consumer:            { name: @consumer_name },
            provider:            { name: @provider_name },
            pactfile_write_mode: attributes[:pactfile_write_mode].to_s,
            pact_dir:            attributes.fetch(:pact_dir),
          }
          @interaction_builder       = nil
          @interactions              = []
        end

        def given(provider_state)
          interaction_builder.given(provider_state)
        end

        def provide(message)
          interaction_builder.provide(message)
        end

        def verify(_example_description)
          true # TODO: find out how the verification works in original pact
        end

        def log(msg)
          logger.log(msg)
        end

        def write_pact
          consumer_contract_params = @consumer_contract_details.merge(interactions: @interactions)
          consumer_contract_writer = Pact::ConsumerContractWriter.new(consumer_contract_params, logger)
          consumer_contract_writer.write
        end

        def consumer_contract
          @consumer_contract ||= Pact::ConsumerContract.new(
            consumer:     Pact::ServiceConsumer.new(name: @consumer_name),
            provider:     Pact::ServiceProvider.new(name: @provider_name),
            interactions: @interactions,
          )
        end

        def handle_interaction_fully_defined(interaction)
          @interactions << interaction
          @interaction_builder = nil
        end

        private

        attr_reader :mock_service_client
        attr_writer :interaction_builder

        def interaction_builder
          @interaction_builder ||=
            begin
              interaction_builder = InteractionBuilder.new do |interaction|
                handle_interaction_fully_defined(interaction)
                self
              end
              interaction_builder
            end
        end
      end
    end
  end
end