# frozen_string_literal: true

RSpec.describe "Project middleware", type: :integration do
  it "mounts Rack middleware" do
    with_project do
      generate_middleware

      unshift "config/environment.rb", 'require "rack/etag"'
      unshift "config/environment.rb", 'require_relative "./middleware/runtime"'
      unshift "config/environment.rb", 'require_relative "./middleware/custom"'

      inject_line_after "config/environment.rb", "Hanami.configure", <<~EOL
        middleware.use Middleware::Runtime
        middleware.use Middleware::Custom, "OK"
        middleware.use Rack::ETag
      EOL

      generate "action web home#index --url=/"
      rewrite "apps/web/controllers/home/index.rb", <<~EOF
        module Web::Controllers::Home
          class Index
            include Web::Action

            def call(params)
              self.body = "OK"
            end
          end
        end
      EOF

      server do
        get "/"

        expect(last_response.status).to               eq(200)

        expect(last_response.headers["X-Runtime"]).to eq("1ms")
        expect(last_response.headers["X-Custom"]).to  eq("OK")
        expect(last_response.headers["ETag"]).to_not  be_nil
      end
    end
  end

  private

  def generate_middleware # rubocop:disable Metrics/MethodLength
    write "config/middleware/runtime.rb", <<~EOF
      module Middleware
        class Runtime
          def initialize(app)
            @app = app
          end

          def call(env)
            status, headers, body = @app.call(env)
            headers["X-Runtime"]  = "1ms"

            [status, headers, body]
          end
        end
      end
    EOF

    write "config/middleware/custom.rb", <<~EOF
      module Middleware
        class Custom
          def initialize(app, value)
            @app   = app
            @value = value
          end

          def call(env)
            status, headers, body = @app.call(env)
            headers["X-Custom"]   = @value

            [status, headers, body]
          end
        end
      end
    EOF
  end
end