# frozen_string_literal: true

class Transaction
	def self.sale(customer, amount:, payment_method: nil)
		REDIS.get("jmp_pay_decline-#{customer.customer_id}").then do |declines|
			raise "too many declines" if declines.to_i >= 2

			BRAINTREE.transaction.sale(
				amount: amount,
				**sale_args_for(customer, payment_method)
			).then do |response|
				decline_guard(customer, response)
				new(response.transaction)
			end
		end
	end

	def self.decline_guard(customer, response)
		return if response.success?

		REDIS.incr("jmp_pay_decline-#{customer.customer_id}").then do
			REDIS.expire("jmp_pay_decline-#{customer.customer_id}", 60 * 60 * 24)
		end
		raise response.message
	end

	def self.sale_args_for(customer, payment_method=nil)
		{
			merchant_account_id: customer.merchant_account,
			options: { submit_for_settlement: true }
		}.merge(
			if payment_method
				{ payment_method_token: payment_method.token }
			else
				{ customer_id: customer.id }
			end
		)
	end

	attr_reader :amount

	def initialize(braintree_transaction)
		@customer_id = braintree_transaction.customer_details.id
		@transaction_id = braintree_transaction.id
		@created_at = braintree_transaction.created_at
		@amount = braintree_transaction.amount
	end

	def insert
		params = [@customer_id, @transaction_id, @created_at, @amount]
		DB.exec_defer(<<~SQL, params)
			INSERT INTO transactions
				(customer_id, transaction_id, created_at, amount)
			VALUES
				($1, $2, $3, $4)
		SQL
	end
end