1# frozen_string_literal: true
2
3require "ruby-bandwidth-iris"
4Faraday.default_adapter = :em_synchrony
5
6require "cbor"
7require "countries"
8
9require_relative "area_code_repo"
10require_relative "form_template"
11
12class TelSelections
13 THIRTY_DAYS = 60 * 60 * 24 * 30
14
15 def initialize(redis: REDIS, db: DB, memcache: MEMCACHE)
16 @redis = redis
17 @memcache = memcache
18 @db = db
19 end
20
21 def set(jid, tel)
22 @redis.setex("pending_tel_for-#{jid}", THIRTY_DAYS, tel.pending_value)
23 end
24
25 def set_tel(jid, tel)
26 ChooseTel::Tn::LocalInventory.fetch(tel).then do |local_inv|
27 set(
28 jid,
29 local_inv || ChooseTel::Tn::Bandwidth.new(ChooseTel::Tn.new(tel))
30 )
31 end
32 end
33
34 def delete(jid)
35 @redis.del("pending_tel_for-#{jid}")
36 end
37
38 def [](jid)
39 @redis.get("pending_tel_for-#{jid}").then do |tel|
40 tel ? HaveTel.new(tel) : ChooseTel.new(db: @db, memcache: @memcache)
41 end
42 end
43
44 class HaveTel
45 def initialize(tel)
46 @tel = ChooseTel::Tn.for_pending_value(tel)
47 end
48
49 def choose_tel
50 EMPromise.resolve(@tel)
51 end
52 end
53
54 class ChooseTel
55 class Fail < RuntimeError; end
56
57 def initialize(db: DB, memcache: MEMCACHE)
58 @db = db
59 @memcache = memcache
60 end
61
62 def choose_tel(error: nil)
63 Command.reply { |reply|
64 reply.allowed_actions = [:next]
65 reply.command << FormTemplate.render("tn_search", error: error)
66 }.then do |iq|
67 available = AvailableNumber.for(iq.form, db: @db, memcache: @memcache)
68 next available if available.is_a?(Tn::Bandwidth)
69
70 choose_from_list(available.tns)
71 rescue Fail
72 choose_tel(error: $!.to_s)
73 end
74 end
75
76 def choose_from_list(tns)
77 raise Fail, "No numbers found, try another search." if tns.empty?
78
79 Command.reply { |reply|
80 reply.allowed_actions = [:next, :prev]
81 reply.command << FormTemplate.render("tn_list", tns: tns)
82 }.then { |iq|
83 choose_from_list_result(tns, iq)
84 }
85 end
86
87 def choose_from_list_result(tns, iq)
88 tel = iq.form.field("tel")&.value
89 return choose_tel if iq.prev? || !tel
90
91 tns.find { |tn| tn.tel == tel } || Tn::Bandwidth.new(Tn.new(tel))
92 end
93
94 class AvailableNumber
95 def self.for(form, db: DB, memcache: MEMCACHE)
96 qs = form.field("q")&.value.to_s.strip
97 return Tn.for_pending_value(qs) if qs =~ /\A\+1\d{10}\Z/
98
99 quantity = Quantity.for(form)
100 q = Q.for(feelinglucky(qs, form), db: db, memcache: memcache)
101
102 new(
103 q.iris_query
104 .merge(enableTNDetail: true, LCA: false),
105 q.sql_query, quantity,
106 fallback: q.fallback, memcache: memcache, db: db
107 )
108 end
109
110 ACTION_FIELD = "http://jabber.org/protocol/commands#actions"
111
112 def self.feelinglucky(q, form)
113 return q unless q.empty?
114 return q unless form.field(ACTION_FIELD)&.value == "feelinglucky"
115
116 "810"
117 end
118
119 def initialize(
120 iris_query, sql_query, quantity,
121 fallback: [], memcache: MEMCACHE, db: DB
122 )
123 @iris_query = iris_query.merge(quantity.iris_query)
124 @sql_query = sql_query
125 @quantity = quantity
126 @fallback = fallback
127 @memcache = memcache
128 @db = db
129 end
130
131 def tns
132 Command.log.debug("BandwidthIris::AvailableNumber.list", @iris_query)
133 unless (result = fetch_cache)
134 result = fetch_bandwidth_inventory + fetch_local_inventory.sync
135 end
136 return next_fallback if result.empty? && !@fallback.empty?
137
138 @quantity.limit(result)
139 end
140
141 def fetch_bandwidth_inventory
142 BandwidthIris::AvailableNumber
143 .list(@iris_query)
144 .map { |tn| Tn::Bandwidth.new(Tn::Option.new(**tn)) }
145 rescue BandwidthIris::APIError
146 raise Fail, $!.message
147 end
148
149 def fetch_local_inventory
150 return EMPromise.resolve([]) unless @sql_query
151
152 @db.query_defer(@sql_query[0], @sql_query[1..-1]).then { |rows|
153 rows.map { |row|
154 Tn::LocalInventory.new(Tn::Option.new(
155 full_number: row["tel"].sub(/\A\+1/, ""),
156 city: row["locality"],
157 state: row["region"]
158 ), row["bandwidth_account_id"], price: row["premium_price"])
159 }
160 }
161 end
162
163 def next_fallback
164 @memcache.set(cache_key, CBOR.encode([]), 43200)
165 fallback = @fallback.shift
166 self.class.new(
167 fallback.iris_query.merge(enableTNDetail: true),
168 fallback.sql_query,
169 @quantity,
170 fallback: @fallback,
171 memcache: @memcache, db: @db
172 ).tns
173 end
174
175 def fetch_cache
176 promise = EMPromise.new
177 @memcache.get(cache_key, &promise.method(:fulfill))
178 result = promise.sync
179 result ? CBOR.decode(result) : nil
180 end
181
182 def cache_key
183 "BandwidthIris_#{@iris_query.to_a.flatten.join(',')}"
184 end
185
186 class Quantity
187 def self.for(form)
188 return new(10) if form.field(ACTION_FIELD)&.value == "feelinglucky"
189
190 rsm_max = form.find(
191 "ns:set/ns:max",
192 ns: "http://jabber.org/protocol/rsm"
193 ).first
194 return new(rsm_max.content.to_i) if rsm_max
195
196 new(10)
197 end
198
199 def initialize(quantity)
200 @quantity = quantity
201 end
202
203 def limit(result)
204 (result || [])[0..@quantity - 1]
205 end
206
207 def iris_query
208 { quantity: [@quantity, 500].min }
209 end
210 end
211 end
212
213 class Tn
214 attr_reader :tel
215
216 def self.for_pending_value(value)
217 if value.start_with?("LocalInventory/")
218 tel, account, price =
219 value.sub(/\ALocalInventory\//, "").split("/", 3)
220 LocalInventory.new(Tn.new(tel), account, price: price.to_d)
221 else
222 Bandwidth.new(Tn.new(value))
223 end
224 end
225
226 def price
227 0
228 end
229
230 # Creates and inserts transaction charging the customer
231 # for the phone number. If price <= 0 this is a noop.
232 # This method never checks customer balance.
233 #
234 # @param customer [Customer] the customer to charge
235 def charge(customer)
236 return if price <= 0
237
238 transaction(customer).insert
239 end
240
241 # @param customer [Customer] the customer to charge
242 def transaction(customer)
243 Transaction.new(
244 customer_id: customer.customer_id,
245 transaction_id: transaction_id(customer),
246 amount: -price,
247 note: transaction_note,
248 ignore_duplicate: false
249 )
250 end
251
252 # @param customer [Customer] the customer to charge
253 def transaction_id(customer)
254 "#{customer.customer_id}-bill-#{customer.plan}-at-#{Time.now.to_i}"
255 end
256
257 def transaction_note
258 "One-time charge for number: #{formatted_tel}"
259 end
260
261 def initialize(tel)
262 @tel = tel
263 end
264
265 def formatted_tel
266 @tel =~ /\A\+1(\d{3})(\d{3})(\d+)\Z/
267 "(#{$1}) #{$2}-#{$3}"
268 end
269
270 def to_s
271 formatted_tel
272 end
273
274 class Option < Tn
275 def initialize(full_number:, city:, state:, **)
276 @tel = "+1#{full_number}"
277 @locality = city
278 @region = state
279 end
280
281 def option
282 op = Blather::Stanza::X::Field::Option.new(value: tel, label: to_s)
283 op << reference
284 op
285 end
286
287 def reference
288 Nokogiri::XML::Builder.new { |xml|
289 xml.reference(
290 xmlns: "urn:xmpp:reference:0",
291 begin: 0,
292 end: formatted_tel.length - 1,
293 type: "data",
294 uri: "tel:#{tel}"
295 )
296 }.doc.root
297 end
298
299 def to_s
300 "#{formatted_tel} (#{@locality}, #{@region})"
301 end
302 end
303
304 class Bandwidth < SimpleDelegator
305 def pending_value
306 tel
307 end
308
309 def reserve(customer)
310 BandwidthTnReservationRepo.new.ensure(customer, tel)
311 end
312
313 def order(_, customer)
314 BandwidthTnReservationRepo.new.get(customer, tel).then do |rid|
315 BandwidthTNOrder.create(
316 tel,
317 customer_order_id: customer.customer_id,
318 reservation_id: rid
319 ).then(&:poll)
320 end
321 end
322 end
323
324 class LocalInventory < SimpleDelegator
325 attr_reader :price
326
327 def self.fetch(tn, db: DB)
328 db.query_defer("SELECT * FROM tel_inventory WHERE tel = $1", [tn])
329 .then { |rows|
330 rows.first&.then { |row|
331 new(Tn::Option.new(
332 full_number: row["tel"].sub(/\A\+1/, ""),
333 city: row["locality"],
334 state: row["region"]
335 ), row["bandwidth_account_id"], price: row["premium_price"])
336 }
337 }
338 end
339
340 def initialize(tn, bandwidth_account_id, price: 0)
341 super(tn)
342 @bandwidth_account_id = bandwidth_account_id
343 @price = price
344 end
345
346 def pending_value
347 "LocalInventory/#{tel}/#{@bandwidth_account_id}/#{price}"
348 end
349
350 def reserve(*)
351 EMPromise.resolve(nil)
352 end
353
354 def order(db, _customer)
355 # Move always moves to wrong account, oops
356 # Also probably can't move from/to same account
357 # BandwidthTnRepo.new.move(
358 # tel, customer.customer_id, @bandwidth_account_id
359 # )
360 db.exec_defer("DELETE FROM tel_inventory WHERE tel = $1", [tel])
361 .then { |r| raise unless r.cmd_tuples.positive? }
362 end
363 end
364 end
365
366 class Q
367 def self.register(regex, &block)
368 @queries ||= []
369 @queries << [regex, block]
370 end
371
372 def self.for(q, **kwa)
373 q = replace_region_names(q) unless q.start_with?("~")
374
375 @queries.each do |(regex, block)|
376 match_data = (q =~ regex)
377 return block.call($1 || $&, *$~.to_a[2..-1], **kwa) if match_data
378 end
379
380 raise Fail, "Format not recognized: #{q}"
381 end
382
383 def self.replace_region_names(query)
384 ISO3166::Country[:US].subdivisions.merge(
385 ISO3166::Country[:CA].subdivisions
386 ).reduce(query) do |q, (code, region)|
387 ([region.name] + Array(region.unofficial_names))
388 .reduce(q) do |r, name|
389 r.sub(/#{name}\s*(?!,)/i, code)
390 end
391 end
392 end
393
394 def initialize(q, **)
395 @q = q
396 end
397
398 def fallback
399 []
400 end
401
402 {
403 areaCode: [:AreaCode, /\A[2-9][0-9]{2}\Z/],
404 npaNxx: [:NpaNxx, /\A(?:[2-9][0-9]{2}){2}\Z/],
405 npaNxxx: [:NpaNxxx, /\A(?:[2-9][0-9]{2}){2}[0-9]\Z/]
406 }.each do |k, args|
407 klass = const_set(
408 args[0],
409 Class.new(Q) {
410 define_method(:iris_query) do
411 { k => @q }
412 end
413
414 define_method(:sql_query) do
415 [
416 "SELECT * FROM tel_inventory " \
417 "WHERE available_after < LOCALTIMESTAMP AND tel LIKE $1",
418 "+1#{@q}%"
419 ]
420 end
421 }
422 )
423
424 args[1..-1].each do |regex|
425 register(regex) { |q, **| klass.new(q) }
426 end
427 end
428
429 class PostalCode < Q
430 Q.register(/\A\d{5}(?:-\d{4})?\Z/, &method(:new))
431
432 def iris_query
433 { zip: @q }
434 end
435
436 def sql_query
437 nil
438 end
439 end
440
441 class LocalVanity < Q
442 Q.register(/\A~(.+)\Z/, &method(:new))
443
444 def iris_query
445 { localVanity: @q }
446 end
447
448 def sql_query
449 [
450 "SELECT * FROM tel_inventory " \
451 "WHERE available_after < LOCALTIMESTAMP AND tel LIKE $1",
452 "%#{q_digits}%"
453 ]
454 end
455
456 def q_digits
457 @q
458 .gsub(/[ABC]/i, "2")
459 .gsub(/[DEF]/i, "3")
460 .gsub(/[GHI]/i, "4")
461 .gsub(/[JKL]/i, "5")
462 .gsub(/[MNO]/i, "6")
463 .gsub(/[PQRS]/i, "7")
464 .gsub(/[TUV]/i, "8")
465 .gsub(/[WXYZ]/i, "9")
466 end
467 end
468
469 class State
470 Q.register(/\A[a-zA-Z]{2}\Z/, &method(:new))
471
472 STATE_MAP = {
473 "QC" => "PQ"
474 }.freeze
475
476 def initialize(state, **)
477 @state = STATE_MAP.fetch(state.upcase, state.upcase)
478 end
479
480 def fallback
481 []
482 end
483
484 def iris_query
485 { state: @state }
486 end
487
488 def sql_query
489 [
490 "SELECT * FROM tel_inventory " \
491 "WHERE available_after < LOCALTIMESTAMP AND region = $1",
492 @state
493 ]
494 end
495
496 def to_s
497 @state
498 end
499 end
500
501 class CityState
502 Q.register(/\A([^,]+)\s*,\s*([a-zA-Z]{2})\Z/, &method(:new))
503
504 CITY_MAP = {
505 "ajax" => "Ajax-Pickering",
506 "kitchener" => "Kitchener-Waterloo",
507 "new york" => "New York City",
508 "pickering" => "Ajax-Pickering",
509 "sault ste marie" => "sault sainte marie",
510 "sault ste. marie" => "sault sainte marie",
511 "south durham" => "Durham",
512 "township of langley" => "Langley",
513 "waterloo" => "Kitchener-Waterloo",
514 "west durham" => "Durham"
515 }.freeze
516
517 def initialize(city, state, db: DB, memcache: MEMCACHE)
518 @city = CITY_MAP.fetch(city.downcase, city)
519 @state = State.new(state)
520 @db = db
521 @memcache = memcache
522 end
523
524 def fallback
525 LazyObject.new do
526 AreaCodeRepo.new(
527 db: @db,
528 geo_code_repo: GeoCodeRepo.new(memcache: @memcache)
529 ).find(to_s).sync.map { |area_code|
530 AreaCode.new(area_code)
531 }
532 end
533 end
534
535 def iris_query
536 @state.iris_query.merge(city: @city)
537 end
538
539 def sql_query
540 [
541 "SELECT * FROM tel_inventory " \
542 "WHERE available_after < LOCALTIMESTAMP " \
543 "AND region = $1 AND locality = $2",
544 @state.to_s, @city
545 ]
546 end
547
548 def to_s
549 "#{@city}, #{@state}"
550 end
551 end
552 end
553 end
554end