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 initialize(tel)
227 @tel = tel
228 end
229
230 def formatted_tel
231 @tel =~ /\A\+1(\d{3})(\d{3})(\d+)\Z/
232 "(#{$1}) #{$2}-#{$3}"
233 end
234
235 def to_s
236 formatted_tel
237 end
238
239 def price
240 0
241 end
242
243 def charge(*); end
244
245 class Option < Tn
246 def initialize(full_number:, city:, state:, **)
247 @tel = "+1#{full_number}"
248 @locality = city
249 @region = state
250 end
251
252 def option
253 op = Blather::Stanza::X::Field::Option.new(value: tel, label: to_s)
254 op << reference
255 op
256 end
257
258 def reference
259 Nokogiri::XML::Builder.new { |xml|
260 xml.reference(
261 xmlns: "urn:xmpp:reference:0",
262 begin: 0,
263 end: formatted_tel.length - 1,
264 type: "data",
265 uri: "tel:#{tel}"
266 )
267 }.doc.root
268 end
269
270 def to_s
271 "#{formatted_tel} (#{@locality}, #{@region})"
272 end
273 end
274
275 class Bandwidth < SimpleDelegator
276 def pending_value
277 tel
278 end
279
280 def reserve(customer)
281 BandwidthTnReservationRepo.new.ensure(customer, tel)
282 end
283
284 def order(_, customer)
285 BandwidthTnReservationRepo.new.get(customer, tel).then do |rid|
286 BandwidthTNOrder.create(
287 tel,
288 customer_order_id: customer.customer_id,
289 reservation_id: rid
290 ).then(&:poll)
291 end
292 end
293 end
294
295 class LocalInventory < SimpleDelegator
296 attr_reader :price
297
298 def initialize(tn, bandwidth_account_id, price: 0)
299 super(tn)
300 @bandwidth_account_id = bandwidth_account_id
301 @price = price || 0
302 end
303
304 # Creates and inserts transaction charging the customer
305 # for the phone number. If price <= 0 this is a noop.
306 # This method never checks customer balance.
307 #
308 # @param customer [Customer] the customer to charge
309 def charge(customer)
310 return if price <= 0
311
312 transaction(customer).insert
313 end
314
315 # @param customer [Customer] the customer to charge
316 def transaction(customer)
317 Transaction.new(
318 customer_id: customer.customer_id,
319 transaction_id:
320 "#{customer.customer_id}-bill-#{@tel}-at-#{Time.now.to_i}",
321 amount: -price,
322 note: "One-time charge for number: #{formatted_tel}",
323 ignore_duplicate: false
324 )
325 end
326
327 def to_s
328 super + (price > 0 ? " +$%.2f" % price : "")
329 end
330
331 def self.fetch(tn, db: DB)
332 db.query_defer("SELECT * FROM tel_inventory WHERE tel = $1", [tn])
333 .then { |rows|
334 rows.first&.then { |row|
335 new(Tn::Option.new(
336 full_number: row["tel"].sub(/\A\+1/, ""),
337 city: row["locality"],
338 state: row["region"]
339 ), row["bandwidth_account_id"], price: row["premium_price"])
340 }
341 }
342 end
343
344 def pending_value
345 "LocalInventory/#{tel}/#{@bandwidth_account_id}/#{price}"
346 end
347
348 def reserve(*)
349 EMPromise.resolve(nil)
350 end
351
352 def order(db, _customer)
353 # Move always moves to wrong account, oops
354 # Also probably can't move from/to same account
355 # BandwidthTnRepo.new.move(
356 # tel, customer.customer_id, @bandwidth_account_id
357 # )
358 db.exec_defer("DELETE FROM tel_inventory WHERE tel = $1", [tel])
359 .then { |r| raise unless r.cmd_tuples.positive? }
360 end
361 end
362 end
363
364 class Q
365 def self.register(regex, &block)
366 @queries ||= []
367 @queries << [regex, block]
368 end
369
370 def self.for(q, **kwa)
371 q = replace_region_names(q) unless q.start_with?("~")
372
373 @queries.each do |(regex, block)|
374 match_data = (q =~ regex)
375 return block.call($1 || $&, *$~.to_a[2..-1], **kwa) if match_data
376 end
377
378 raise Fail, "Format not recognized: #{q}"
379 end
380
381 def self.replace_region_names(query)
382 ISO3166::Country[:US].subdivisions.merge(
383 ISO3166::Country[:CA].subdivisions
384 ).reduce(query) do |q, (code, region)|
385 ([region.name] + Array(region.unofficial_names))
386 .reduce(q) do |r, name|
387 r.sub(/#{name}\s*(?!,)/i, code)
388 end
389 end
390 end
391
392 def initialize(q, **)
393 @q = q
394 end
395
396 def fallback
397 []
398 end
399
400 {
401 areaCode: [:AreaCode, /\A[2-9][0-9]{2}\Z/],
402 npaNxx: [:NpaNxx, /\A(?:[2-9][0-9]{2}){2}\Z/],
403 npaNxxx: [:NpaNxxx, /\A(?:[2-9][0-9]{2}){2}[0-9]\Z/]
404 }.each do |k, args|
405 klass = const_set(
406 args[0],
407 Class.new(Q) {
408 define_method(:iris_query) do
409 { k => @q }
410 end
411
412 define_method(:sql_query) do
413 [
414 "SELECT * FROM tel_inventory " \
415 "WHERE available_after < LOCALTIMESTAMP AND tel LIKE $1",
416 "+1#{@q}%"
417 ]
418 end
419 }
420 )
421
422 args[1..-1].each do |regex|
423 register(regex) { |q, **| klass.new(q) }
424 end
425 end
426
427 class PostalCode < Q
428 Q.register(/\A\d{5}(?:-\d{4})?\Z/, &method(:new))
429
430 def iris_query
431 { zip: @q }
432 end
433
434 def sql_query
435 nil
436 end
437 end
438
439 class LocalVanity < Q
440 Q.register(/\A~(.+)\Z/, &method(:new))
441
442 def iris_query
443 { localVanity: @q }
444 end
445
446 def sql_query
447 [
448 "SELECT * FROM tel_inventory " \
449 "WHERE available_after < LOCALTIMESTAMP AND tel LIKE $1",
450 "%#{q_digits}%"
451 ]
452 end
453
454 def q_digits
455 @q
456 .gsub(/[ABC]/i, "2")
457 .gsub(/[DEF]/i, "3")
458 .gsub(/[GHI]/i, "4")
459 .gsub(/[JKL]/i, "5")
460 .gsub(/[MNO]/i, "6")
461 .gsub(/[PQRS]/i, "7")
462 .gsub(/[TUV]/i, "8")
463 .gsub(/[WXYZ]/i, "9")
464 end
465 end
466
467 class State
468 Q.register(/\A[a-zA-Z]{2}\Z/, &method(:new))
469
470 STATE_MAP = {
471 "QC" => "PQ"
472 }.freeze
473
474 def initialize(state, **)
475 @state = STATE_MAP.fetch(state.upcase, state.upcase)
476 end
477
478 def fallback
479 []
480 end
481
482 def iris_query
483 { state: @state }
484 end
485
486 def sql_query
487 [
488 "SELECT * FROM tel_inventory " \
489 "WHERE available_after < LOCALTIMESTAMP AND region = $1",
490 @state
491 ]
492 end
493
494 def to_s
495 @state
496 end
497 end
498
499 class CityState
500 Q.register(/\A([^,]+)\s*,\s*([a-zA-Z]{2})\Z/, &method(:new))
501
502 CITY_MAP = {
503 "ajax" => "Ajax-Pickering",
504 "kitchener" => "Kitchener-Waterloo",
505 "new york" => "New York City",
506 "pickering" => "Ajax-Pickering",
507 "sault ste marie" => "sault sainte marie",
508 "sault ste. marie" => "sault sainte marie",
509 "south durham" => "Durham",
510 "township of langley" => "Langley",
511 "waterloo" => "Kitchener-Waterloo",
512 "west durham" => "Durham"
513 }.freeze
514
515 def initialize(city, state, db: DB, memcache: MEMCACHE)
516 @city = CITY_MAP.fetch(city.downcase, city)
517 @state = State.new(state)
518 @db = db
519 @memcache = memcache
520 end
521
522 def fallback
523 LazyObject.new do
524 AreaCodeRepo.new(
525 db: @db,
526 geo_code_repo: GeoCodeRepo.new(memcache: @memcache)
527 ).find(to_s).sync.map { |area_code|
528 AreaCode.new(area_code)
529 }
530 end
531 end
532
533 def iris_query
534 @state.iris_query.merge(city: @city)
535 end
536
537 def sql_query
538 [
539 "SELECT * FROM tel_inventory " \
540 "WHERE available_after < LOCALTIMESTAMP " \
541 "AND region = $1 AND locality = $2",
542 @state.to_s, @city
543 ]
544 end
545
546 def to_s
547 "#{@city}, #{@state}"
548 end
549 end
550 end
551 end
552end