1# frozen_string_literal: true
 2
 3require "lazy_object"
 4
 5require_relative "customer"
 6require_relative "legacy_customer"
 7require_relative "polyfill"
 8
 9class CustomerRepo
10	def initialize(
11		redis: LazyObject.new { REDIS },
12		db: LazyObject.new { DB },
13		braintree: LazyObject.new { BRAINTREE },
14		sgx_repo: TrivialBackendSgxRepo.new
15	)
16		@redis = redis
17		@db = db
18		@braintree = braintree
19		@sgx_repo = sgx_repo
20	end
21
22	def find(customer_id)
23		@redis.get("jmp_customer_jid-#{customer_id}").then do |jid|
24			raise "No jid" unless jid
25			find_inner(customer_id, jid)
26		end
27	end
28
29	def find_by_jid(jid)
30		if jid.to_s =~ /\Acustomer_(.+)@#{CONFIG[:component][:jid]}\Z/
31			find($1)
32		else
33			@redis.get("jmp_customer_id-#{jid}").then { |customer_id|
34				raise "No customer id" unless customer_id
35				find_inner(customer_id, jid)
36			}.catch do
37				find_legacy_customer(jid)
38			end
39		end
40	end
41
42	def find_by_tel(tel)
43		@redis.get("catapult_jid-#{tel}").then do |jid|
44			raise "No jid" unless jid
45			find_by_jid(jid)
46		end
47	end
48
49	def create(jid)
50		@braintree.customer.create.then do |result|
51			raise "Braintree customer create failed" unless result.success?
52			cid = result.customer.id
53			@redis.msetnx(
54				"jmp_customer_id-#{jid}", cid, "jmp_customer_jid-#{cid}", jid
55			).then do |redis_result|
56				raise "Saving new customer to redis failed" unless redis_result == 1
57				Customer.new(cid, Blather::JID.new(jid), sgx: new_sgx(cid))
58			end
59		end
60	end
61
62protected
63
64	def new_sgx(customer_id)
65		TrivialBackendSgxRepo.new.get(customer_id).with(
66			registered?: false
67		)
68	end
69
70	def find_legacy_customer(jid)
71		@redis.lindex("catapult_cred-#{jid}", 3).then do |tel|
72			raise "No customer" unless tel
73			LegacyCustomer.new(Blather::JID.new(jid), tel)
74		end
75	end
76
77	def hydrate_plan(customer_id, raw_customer)
78		raw_customer.dup.tap do |data|
79			data[:plan] = CustomerPlan.new(
80				customer_id,
81				plan: data.delete(:plan_name)&.then(&Plan.method(:for)),
82				expires_at: data.delete(:expires_at)
83			)
84		end
85	end
86
87	def find_inner(customer_id, jid)
88		result = @db.query_defer(<<~SQL, [customer_id])
89			SELECT COALESCE(balance,0) AS balance, plan_name, expires_at
90			FROM customer_plans LEFT JOIN balances USING (customer_id)
91			WHERE customer_id=$1 LIMIT 1
92		SQL
93		EMPromise.all([@sgx_repo.get(customer_id), result]).then do |(sgx, rows)|
94			data = hydrate_plan(customer_id, rows.first&.transform_keys(&:to_sym) || {})
95			Customer.new(customer_id, Blather::JID.new(jid), sgx: sgx, **data)
96		end
97	end
98end