# frozen_string_literal: true

require "lazy_object"

require_relative "customer_fwd"
require_relative "ibr_repo"
require_relative "trivial_backend_sgx_repo"

class Bwmsgsv2Repo
	VOICEMAIL_TRANSCRIPTION_DISABLED = 0

	def initialize(
		jid: CONFIG[:sgx],
		redis: LazyObject.new { REDIS },
		ibr_repo: IBRRepo.new,
		**kwargs
	)
		@jid = jid
		@redis = redis
		@ibr_repo = ibr_repo
		@trivial_repo = TrivialBackendSgxRepo.new(jid: jid, **kwargs)
	end

	def get(customer_id)
		sgx = @trivial_repo.get(customer_id)
		fetch_raw(sgx.from_jid).then do |(((ogm_url, fwd_time, fwd), trans_d), reg)|
			sgx.with(
				ogm_url: ogm_url,
				fwd: CustomerFwd.for(uri: fwd, timeout: fwd_time),
				transcription_enabled: !trans_d,
				registered?: reg
			)
		end
	end

	def put_transcription_enabled(customer_id, enabled)
		sgx = @trivial_repo.get(customer_id)
		REDIS.setbit(
			"catapult_settings_flags-#{sgx.from_jid}",
			Bwmsgsv2Repo::VOICEMAIL_TRANSCRIPTION_DISABLED,
			enabled ? 0 : 1
		)
	end

	def put_fwd(customer_id, tel, customer_fwd)
		sgx = @trivial_repo.get(customer_id)
		EMPromise.all([
			set_or_delete("catapult_fwd-#{tel}", customer_fwd.uri),
			set_or_delete(
				"catapult_fwd_timeout-#{sgx.from_jid}",
				customer_fwd.timeout.to_i
			)
		])
	end

protected

	def set_or_delete(k, v)
		if v.nil?
			REDIS.del(k)
		else
			REDIS.set(k, v)
		end
	end

	def fetch_raw(from_jid)
		registration(from_jid).then do |r|
			EMPromise.all([from_redis(from_jid, r ? r.phone : nil), r])
		end
	end

	def registration(from_jid)
		@ibr_repo.registered?(@jid, from: from_jid)
	end

	def from_redis(from_jid, tel)
		EMPromise.all([
			@redis.mget(*[
				"catapult_ogm_url-#{from_jid}",
				"catapult_fwd_timeout-#{from_jid}",
				("catapult_fwd-#{tel}" if tel)
			].compact),
			@redis.getbit(
				"catapult_settings_flags-#{from_jid}", VOICEMAIL_TRANSCRIPTION_DISABLED
			).then { |x| x == 1 }
		])
	end
end