# frozen_string_literal: true

require "forwardable"

require_relative "./ibr"
require_relative "./payment_methods"
require_relative "./plan"

class Customer
	def self.for_jid(jid)
		REDIS.get("jmp_customer_id-#{jid}").then do |customer_id|
			raise "No customer id" unless customer_id
			for_customer_id(customer_id)
		end
	end

	def self.for_customer_id(customer_id)
		result = DB.query_defer(<<~SQL, [customer_id])
			SELECT COALESCE(balance,0) AS balance, plan_name, expires_at
			FROM customer_plans LEFT JOIN balances USING (customer_id)
			WHERE customer_id=$1 LIMIT 1
		SQL
		result.then do |rows|
			new(customer_id, **rows.first&.transform_keys(&:to_sym) || {})
		end
	end

	extend Forwardable

	attr_reader :customer_id, :balance
	def_delegator :@plan, :name, :plan_name
	def_delegators :@plan, :currency, :merchant_account

	def initialize(
		customer_id,
		plan_name: nil,
		expires_at: Time.now,
		balance: BigDecimal.new(0)
	)
		@plan = plan_name && Plan.for(plan_name)
		@expires_at = expires_at
		@customer_id = customer_id
		@balance = balance
	end

	def with_plan(plan_name)
		self.class.new(
			@customer_id,
			balance: @balance,
			expires_at: @expires_at,
			plan_name: plan_name
		)
	end


	def payment_methods
		@payment_methods ||=
			BRAINTREE
			.customer
			.find(@customer_id)
			.then(PaymentMethods.method(:for_braintree_customer))
	end

	def active?
		@plan && @expires_at > Time.now
	end

	def registered?
		ibr = IBR.new(:get, CONFIG[:sgx])
		ibr.from = "customer_#{@customer_id}@#{CONFIG[:component][:jid]}"
		IQ_MANAGER.write(ibr).catch { nil }.then do |result|
			result&.respond_to?(:registered?) && result&.registered?
		end
	end
end