# frozen_string_literal: true

module ErpIntegration
  # Use the `Configuration` class to configure the ERP Integration gem. Use
  # an initializer in your project configure the ERP Integration gem.
  #
  # @example
  #   ```ruby
  #     # config/initializers/erp_integration.rb
  #     ErpIntegration.configure do |config|
  #       config.fulfil_api_key = "..."
  #     end
  #   ```
  class Configuration
    # The `fulfil_api_key` is used by the `FulfilClient` to authorize the
    # requests to the Fulfil API endpoints.
    # @return [String] The API key for Fulfil.
    attr_accessor :fulfil_api_key

    # The `fulfil_merchant_id` is used by the `FulfilClient` to connect to
    # the right Fulfil API endpoints.
    # @return [String] The merchant ID for Fulfil.
    attr_accessor :fulfil_merchant_id

    # Allows configuring an adapter for the `SalesOrder` resource. When none is
    # configured, it will default to Fulfil.
    # @return [Symbol] The configured adapter for the sales orders
    attr_writer :sales_order_adapter

    # Allows configuring an adapter for the `SalesOrderLine` resource. When none is
    # configured, it will default to Fulfil.
    # @return [Symbol] The configured adapter for the order lines.
    attr_writer :sales_order_line_adapter

    # Allows configuring an adapter for the `Product` resource. When none is
    # configured, it will default to Fulfil.
    # @return [Symbol] The configured adapter for the products.
    attr_writer :product_adapter

    # Allows configuring an adapter for the `PurchaseOrder` resource. When none is
    # configured, it will default to Fulfil.
    # @return [Symbol] The configured adapter for the purchase orders.
    attr_writer :purchase_order_adapter

    # Allows configuring an adapter for the `PurchaseOrderLine` resource. When
    # none is configured, it will default to Fulfil.
    # @return [Symbol] The configured adapter for the purchase order lines.
    attr_writer :purchase_order_line_adapter

    # Allows configuring an adapter for the `PurchaseRequest` resource. When
    # none is configured, it will default to Fulfil.
    # @return [Symbol] The configured adapter for the purchase request.
    attr_writer :purchase_request_adapter

    def initialize(**options)
      options.each_pair do |key, value|
        public_send("#{key}=", value) if respond_to?("#{key}=")
      end
    end

    def sales_order_adapter
      @sales_order_adapter || :fulfil
    end

    def sales_order_line_adapter
      @sales_order_line_adapter || :fulfil
    end

    def product_adapter
      @product_adapter || :fulfil
    end

    def purchase_order_adapter
      @purchase_order_adapter || :fulfil
    end

    def purchase_order_line_adapter
      @purchase_order_line_adapter || :fulfil
    end

    def purchase_request_adapter
      @purchase_request_adapter || :fulfil
    end
  end

  # Returns ERP Integration's configuration.
  # @return [ErpIntegration::Configuration] ERP Integration's configuration
  def self.config
    @config ||= Configuration.new
  end

  # Allows setting a new configuration for the ERP Integration gem.
  # @return [ErpIntegration::Configuration] ERP Integration's new configuration
  def self.config=(configuration)
    raise BadConfiguration unless configuration.is_a?(Configuration)

    @config = configuration
  end

  # Allows modifying ERP Integration's configuration.
  #
  # @example
  #   ErpIntegration.configure do |config|
  #     config.some_api_key = "..."
  #   end
  #
  def self.configure
    yield(config)
  end
end