# frozen_string_literal: true

require "blather"
require "blather/stanza/iq/command"

class PortOutPin
	def initialize(sgx)
		@sgx = sgx
	end

	def set(pin)
		cmd = build_command(:execute)

		IQ_MANAGER.write(cmd).then { |reply|
			session_id = reply.command[:sessionid]
			submit_cmd = build_submit_form(pin, session_id)

			IQ_MANAGER.write(submit_cmd).then { |submit_reply|
				validate_submit_reply!(submit_reply)
			}.catch { |e|
				handle_pin_submission_error(e)
			}
		}
	end

protected

	def build_submit_form(pin, session_id)
		build_command(:complete, session_id: session_id).tap { |iq|
			iq.form.type = :submit
			iq.form.fields = [
				{ var: "pin", value: pin },
				{ var: "confirm_pin", value: pin }
			]
		}
	end

	def build_command(action, session_id: nil)
		@sgx.stanza(Blather::Stanza::Iq::Command.new.tap { |iq|
			iq.to = ""
			iq.node = "set-port-out-pin"
			iq.action = action
			iq.sessionid = session_id if session_id
		})
	end

	def validate_submit_reply!(submit_reply)
		sub_text = submit_reply.note&.text
		case submit_reply.status
		when :completed
			raise sub_text if submit_reply.note&.[]("type") == "error"
		when :canceled
			raise CanceledError, reply.note&.text
		else
			raise sub_text
		end
	end

	def handle_pin_submission_error(e)
		if e.is_a?(Blather::StanzaError) || e.is_a?(RuntimeError)
			EMPromise.reject(e)
		else
			Sentry.capture_exception(e)
			EMPromise.reject(
				RuntimeError.new(
					"Unable to communicate with service. Please try again later."
				)
			)
		end
	end
end