1# frozen_string_literal: true
 2
 3require_relative "customer"
 4require_relative "legacy_customer"
 5require_relative "polyfill"
 6
 7class CustomerRepo
 8	def initialize(redis: REDIS, db: DB, braintree: BRAINTREE)
 9		@redis = redis
10		@db = db
11		@braintree = braintree
12	end
13
14	def find(customer_id)
15		@redis.get("jmp_customer_jid-#{customer_id}").then do |jid|
16			raise "No jid" unless jid
17			find_inner(customer_id, jid)
18		end
19	end
20
21	def find_by_jid(jid)
22		if jid.to_s =~ /\Acustomer_(.+)@jmp.chat\Z/
23			find($1)
24		else
25			@redis.get("jmp_customer_id-#{jid}").then { |customer_id|
26				raise "No customer id" unless customer_id
27				find_inner(customer_id, jid)
28			}.catch do
29				find_legacy_customer(jid)
30			end
31		end
32	end
33
34	def find_by_tel(tel)
35		@redis.get("catapult_jid-#{tel}").then do |jid|
36			find_by_jid(jid)
37		end
38	end
39
40	def create(jid)
41		@braintree.customer.create.then do |result|
42			raise "Braintree customer create failed" unless result.success?
43			cid = result.customer.id
44			@redis.msetnx(
45				"jmp_customer_id-#{jid}", cid, "jmp_customer_jid-#{cid}", jid
46			).then do |redis_result|
47				raise "Saving new customer to redis failed" unless redis_result == 1
48				Customer.new(cid, Blather::JID.new(jid))
49			end
50		end
51	end
52
53protected
54
55	def find_legacy_customer(jid)
56		@redis.lindex("catapult_cred-#{jid}", 3).then do |tel|
57			raise "No customer" unless tel
58			LegacyCustomer.new(Blather::JID.new(jid), tel)
59		end
60	end
61
62	def hydrate_plan(customer_id, raw_customer)
63		raw_customer.dup.tap do |data|
64			data[:plan] = CustomerPlan.new(
65				customer_id,
66				plan: data.delete(:plan_name)&.then(&Plan.method(:for)),
67				expires_at: data.delete(:expires_at)
68			)
69		end
70	end
71
72	def find_inner(customer_id, jid)
73		result = @db.query_defer(<<~SQL, [customer_id])
74			SELECT COALESCE(balance,0) AS balance, plan_name, expires_at
75			FROM customer_plans LEFT JOIN balances USING (customer_id)
76			WHERE customer_id=$1 LIMIT 1
77		SQL
78		result.then do |rows|
79			data = hydrate_plan(customer_id, rows.first&.transform_keys(&:to_sym) || {})
80			Customer.new(customer_id, Blather::JID.new(jid), **data)
81		end
82	end
83end