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:
246 "#{customer.customer_id}-bill-#{@tel}-at-#{Time.now.to_i}",
247 amount: -price,
248 note: "One-time charge for number: #{formatted_tel}",
249 ignore_duplicate: false
250 )
251 end
252
253 def initialize(tel)
254 @tel = tel
255 end
256
257 def formatted_tel
258 @tel =~ /\A\+1(\d{3})(\d{3})(\d+)\Z/
259 "(#{$1}) #{$2}-#{$3}"
260 end
261
262 def to_s
263 formatted_tel
264 end
265
266 class Option < Tn
267 def initialize(full_number:, city:, state:, **)
268 @tel = "+1#{full_number}"
269 @locality = city
270 @region = state
271 end
272
273 def option
274 op = Blather::Stanza::X::Field::Option.new(value: tel, label: to_s)
275 op << reference
276 op
277 end
278
279 def reference
280 Nokogiri::XML::Builder.new { |xml|
281 xml.reference(
282 xmlns: "urn:xmpp:reference:0",
283 begin: 0,
284 end: formatted_tel.length - 1,
285 type: "data",
286 uri: "tel:#{tel}"
287 )
288 }.doc.root
289 end
290
291 def to_s
292 "#{formatted_tel} (#{@locality}, #{@region})"
293 end
294 end
295
296 class Bandwidth < SimpleDelegator
297 def pending_value
298 tel
299 end
300
301 def reserve(customer)
302 BandwidthTnReservationRepo.new.ensure(customer, tel)
303 end
304
305 def order(_, customer)
306 BandwidthTnReservationRepo.new.get(customer, tel).then do |rid|
307 BandwidthTNOrder.create(
308 tel,
309 customer_order_id: customer.customer_id,
310 reservation_id: rid
311 ).then(&:poll)
312 end
313 end
314 end
315
316 class LocalInventory < SimpleDelegator
317 attr_reader :price
318
319 def self.fetch(tn, db: DB)
320 db.query_defer("SELECT * FROM tel_inventory WHERE tel = $1", [tn])
321 .then { |rows|
322 rows.first&.then { |row|
323 new(Tn::Option.new(
324 full_number: row["tel"].sub(/\A\+1/, ""),
325 city: row["locality"],
326 state: row["region"]
327 ), row["bandwidth_account_id"], price: row["premium_price"])
328 }
329 }
330 end
331
332 def initialize(tn, bandwidth_account_id, price: 0)
333 super(tn)
334 @bandwidth_account_id = bandwidth_account_id
335 @price = price
336 end
337
338 def pending_value
339 "LocalInventory/#{tel}/#{@bandwidth_account_id}/#{price}"
340 end
341
342 def reserve(*)
343 EMPromise.resolve(nil)
344 end
345
346 def order(db, _customer)
347 # Move always moves to wrong account, oops
348 # Also probably can't move from/to same account
349 # BandwidthTnRepo.new.move(
350 # tel, customer.customer_id, @bandwidth_account_id
351 # )
352 db.exec_defer("DELETE FROM tel_inventory WHERE tel = $1", [tel])
353 .then { |r| raise unless r.cmd_tuples.positive? }
354 end
355 end
356 end
357
358 class Q
359 def self.register(regex, &block)
360 @queries ||= []
361 @queries << [regex, block]
362 end
363
364 def self.for(q, **kwa)
365 q = replace_region_names(q) unless q.start_with?("~")
366
367 @queries.each do |(regex, block)|
368 match_data = (q =~ regex)
369 return block.call($1 || $&, *$~.to_a[2..-1], **kwa) if match_data
370 end
371
372 raise Fail, "Format not recognized: #{q}"
373 end
374
375 def self.replace_region_names(query)
376 ISO3166::Country[:US].subdivisions.merge(
377 ISO3166::Country[:CA].subdivisions
378 ).reduce(query) do |q, (code, region)|
379 ([region.name] + Array(region.unofficial_names))
380 .reduce(q) do |r, name|
381 r.sub(/#{name}\s*(?!,)/i, code)
382 end
383 end
384 end
385
386 def initialize(q, **)
387 @q = q
388 end
389
390 def fallback
391 []
392 end
393
394 {
395 areaCode: [:AreaCode, /\A[2-9][0-9]{2}\Z/],
396 npaNxx: [:NpaNxx, /\A(?:[2-9][0-9]{2}){2}\Z/],
397 npaNxxx: [:NpaNxxx, /\A(?:[2-9][0-9]{2}){2}[0-9]\Z/]
398 }.each do |k, args|
399 klass = const_set(
400 args[0],
401 Class.new(Q) {
402 define_method(:iris_query) do
403 { k => @q }
404 end
405
406 define_method(:sql_query) do
407 [
408 "SELECT * FROM tel_inventory " \
409 "WHERE available_after < LOCALTIMESTAMP AND tel LIKE $1",
410 "+1#{@q}%"
411 ]
412 end
413 }
414 )
415
416 args[1..-1].each do |regex|
417 register(regex) { |q, **| klass.new(q) }
418 end
419 end
420
421 class PostalCode < Q
422 Q.register(/\A\d{5}(?:-\d{4})?\Z/, &method(:new))
423
424 def iris_query
425 { zip: @q }
426 end
427
428 def sql_query
429 nil
430 end
431 end
432
433 class LocalVanity < Q
434 Q.register(/\A~(.+)\Z/, &method(:new))
435
436 def iris_query
437 { localVanity: @q }
438 end
439
440 def sql_query
441 [
442 "SELECT * FROM tel_inventory " \
443 "WHERE available_after < LOCALTIMESTAMP AND tel LIKE $1",
444 "%#{q_digits}%"
445 ]
446 end
447
448 def q_digits
449 @q
450 .gsub(/[ABC]/i, "2")
451 .gsub(/[DEF]/i, "3")
452 .gsub(/[GHI]/i, "4")
453 .gsub(/[JKL]/i, "5")
454 .gsub(/[MNO]/i, "6")
455 .gsub(/[PQRS]/i, "7")
456 .gsub(/[TUV]/i, "8")
457 .gsub(/[WXYZ]/i, "9")
458 end
459 end
460
461 class State
462 Q.register(/\A[a-zA-Z]{2}\Z/, &method(:new))
463
464 STATE_MAP = {
465 "QC" => "PQ"
466 }.freeze
467
468 def initialize(state, **)
469 @state = STATE_MAP.fetch(state.upcase, state.upcase)
470 end
471
472 def fallback
473 []
474 end
475
476 def iris_query
477 { state: @state }
478 end
479
480 def sql_query
481 [
482 "SELECT * FROM tel_inventory " \
483 "WHERE available_after < LOCALTIMESTAMP AND region = $1",
484 @state
485 ]
486 end
487
488 def to_s
489 @state
490 end
491 end
492
493 class CityState
494 Q.register(/\A([^,]+)\s*,\s*([a-zA-Z]{2})\Z/, &method(:new))
495
496 CITY_MAP = {
497 "ajax" => "Ajax-Pickering",
498 "kitchener" => "Kitchener-Waterloo",
499 "new york" => "New York City",
500 "pickering" => "Ajax-Pickering",
501 "sault ste marie" => "sault sainte marie",
502 "sault ste. marie" => "sault sainte marie",
503 "south durham" => "Durham",
504 "township of langley" => "Langley",
505 "waterloo" => "Kitchener-Waterloo",
506 "west durham" => "Durham"
507 }.freeze
508
509 def initialize(city, state, db: DB, memcache: MEMCACHE)
510 @city = CITY_MAP.fetch(city.downcase, city)
511 @state = State.new(state)
512 @db = db
513 @memcache = memcache
514 end
515
516 def fallback
517 LazyObject.new do
518 AreaCodeRepo.new(
519 db: @db,
520 geo_code_repo: GeoCodeRepo.new(memcache: @memcache)
521 ).find(to_s).sync.map { |area_code|
522 AreaCode.new(area_code)
523 }
524 end
525 end
526
527 def iris_query
528 @state.iris_query.merge(city: @city)
529 end
530
531 def sql_query
532 [
533 "SELECT * FROM tel_inventory " \
534 "WHERE available_after < LOCALTIMESTAMP " \
535 "AND region = $1 AND locality = $2",
536 @state.to_s, @city
537 ]
538 end
539
540 def to_s
541 "#{@city}, #{@state}"
542 end
543 end
544 end
545 end
546end