# frozen_string_literal: true

require 'webmock/rspec'
require 'delegate'

# Mixin to provide access to webmock stubs with some wrapping
module WebMockHelper
  # Wrapper for WebMock stubs and expose extra methods
  class StubDelegator < SimpleDelegator
    include WebMock::API

    def _wrap(stub)
      StubDelegator.new(stub)
    end

    def with(...)
      _wrap __getobj__.with(...)
    end

    def json!
      _wrap with(headers: { content_type: 'application/json' })
    end

    def with_auth(user: 'user', password: 'password')
      _wrap with(basic_auth: [user, password])
    end
  end

  def stub_request(...)
    StubDelegator.new WebMock::API.stub_request(...)
  end

  def self.included(base)
    base.extend Macros
  end

  # Macros for defining stubbed HTTP methods in API classes
  module Macros
    def define_stub(method, *args)
      define_method :"stub_#{method}!" do
        instance_variable_set :"@#{method}", stub_request(method, *args)
        self
      end
      attr_reader method
    end
  end
end

# URL stubbing class operating on a fixed URL
# On instantiation specify whether it expects json and/or basic auth
# Call e.g. #stub_get! and then reference the stub with #get
# For APIs with sub-URLs, derive from this class
class SimpleApiHelper
  include WebMockHelper

  def initialize(url, json: true, auth: true)
    @url = url
    @json = json
    @auth = auth
  end

  def stub_request(method)
    s = super(method, @url)
    s = s.json! if @json
    s = s.with_auth if @auth
    s
  end

  %i[get post put patch delete].each { |m| define_stub(m) }
end