1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
|
{-# LANGUAGE QuasiQuotes #-}
module Redacted where
import AppT
import Arg
import Bencode
import Builder
import Comparison
import Conduit (ConduitT)
import Conduit qualified as Cond
import Control.Monad.Logger.CallStack
import Control.Monad.Reader
import Control.Monad.Trans.Resource (resourceForkWith)
import Data.Aeson qualified as Json
import Data.Aeson.BetterErrors qualified as Json
import Data.Aeson.Key qualified as Key
import Data.Aeson.KeyMap qualified as KeyMap
import Data.BEncode (BEncode)
import Data.Conduit ((.|))
import Data.Error.Tree
import Data.IntSet (IntSet)
import Data.IntSet qualified as IntSet
import Data.List qualified as List
import Data.List.NonEmpty qualified as NonEmpty
import Data.Map.Strict qualified as Map
import Data.Maybe (catMaybes)
import Data.Text qualified as Text
import Data.Text.IO qualified as Text.IO
import Data.Time (NominalDiffTime, UTCTime, addUTCTime, getCurrentTime)
import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
import Database.PostgreSQL.Simple (Binary (Binary), Only (..))
import Database.PostgreSQL.Simple qualified as Postgres
import Database.PostgreSQL.Simple.Types (PGArray (PGArray))
import FieldParser (FieldParser)
import FieldParser qualified as Field
import Http qualified
import Json qualified
import Json.Enc qualified as Enc
import Label
import MyLabel
import MyPrelude
import Network.HTTP.Types
import Network.HTTP.Types qualified as Http
import Network.Wai qualified as Wai
import Network.Wai.Handler.Warp qualified as Warp
import Network.Wai.Parse qualified as Wai
import OpenTelemetry.Context.ThreadLocal qualified as Otel
import OpenTelemetry.Trace qualified as Otel hiding (getTracer, inSpan, inSpan')
import Optional
import Parse (Parse, mapLookup, mapLookupMay, runParse)
import Parse qualified
import Postgres.Decoder qualified as Dec
import Postgres.MonadPostgres
import Pretty
import RevList (RevList)
import RevList qualified
import RunCommand (prettyArgsForBash)
import System.FilePath ((</>))
import System.FilePath qualified as File
import System.Process.Typed (proc, readProcessStdout)
import Tool
import Transmission (getTransmissionDownloads)
import UnliftIO (MonadUnliftIO (..), askRunInIO, async, newQSem, withQSem)
import UnliftIO.Async (Async)
import UnliftIO.Async qualified as Async
import UnliftIO.Concurrent (threadDelay)
import Prelude hiding (length, span)
getRedactedApiKey :: App ByteString
getRedactedApiKey = AppT (asks (.redactedApiKey))
data FreeleechStatus = NoTokensRemaining | FreeleechPossible
deriving stock (Eq, Show)
redactedSearch ::
( HasField "actionArgs" extraArguments [(ByteString, ByteString)],
HasField "page" dat (Maybe Natural)
) =>
extraArguments ->
dat ->
Json.Parse ErrorTree a ->
App a
redactedSearch extraArguments dat parser =
inSpan' "Redacted API Search" $ \span ->
redactedPagedRequest
span
( t3
#action
"browse"
#actionArgs
extraArguments.actionArgs
#page
dat.page
)
parser
redactedGetArtist ::
( HasField "artistId" r Int,
HasField "page" r (Maybe Natural)
) =>
r ->
Json.Parse ErrorTree a ->
App a
redactedGetArtist dat parser =
inSpan' "Redacted Get Artist" $ \span -> do
redactedPagedRequest
span
( t3
#action
"artist"
#actionArgs
[("id", buildBytes intDecimalB dat.artistId)]
#page
(dat.page)
)
parser
redactedPagedRequest ::
( HasField "action" dat ByteString,
HasField "actionArgs" dat [(ByteString, ByteString)],
HasField "page" dat (Maybe Natural)
) =>
Otel.Span ->
dat ->
Json.Parse ErrorTree a ->
App a
redactedPagedRequest span dat parser =
redactedApiRequestJson
span
( t2
#action
dat.action
#actionArgs
( (dat.actionArgs <&> second Just)
<> ( dat.page
& ifExists
(\page -> ("page", Just $ buildBytes naturalDecimalB page))
)
)
)
parser
redactedGetTorrentFile ::
( HasField "torrentId" dat Int,
HasField "freelechTokensExhaustedAt" dat (Maybe UTCTime)
) =>
dat ->
App (T2 "freelechStatus" FreeleechStatus "torrentFile" ByteString)
redactedGetTorrentFile dat = inSpan' "Redacted Get Torrent File" $ \span -> do
let mkRequest req = do
let reqName = req.reqName
let useTokens = req.useTokens
let actionArgs =
[ ("id", Just (buildBytes intDecimalB dat.torrentId))
]
<> (if useTokens then [("usetoken", Just "1")] else [])
let reqDat =
( T2
(label @"action" "download")
( label @"actionArgs" $ actionArgs
)
)
addAttribute span reqName (toOtelJsonAttr reqDat)
mkRedactedApiRequest reqDat
-- Check if we should test freeleech tokens again (if exhausted > 24 hours ago)
now <- liftIO getCurrentTime
shouldTestFreeleech <- case dat.freelechTokensExhaustedAt of
Nothing -> pure True -- No exhaustion recorded: use freeleech tokens
Just exhaustedAt -> do
let dayAgo = addUTCTime (-86400) now -- 24 hours ago
if exhaustedAt < dayAgo
then do
addEventSimple span "Testing freeleech tokens (24+ hours since exhaustion)"
pure True -- Test freeleech regardless of user setting
else do
pure False -- Skip freeleech, too recent
-- First attempt with freeleech if should test or user requested
req <- mkRequest (t2 #reqName "redacted.request" #useTokens shouldTestFreeleech)
result <- httpTorrent req
case result of
Right torrentFile ->
pure $
T2
(label @"freelechStatus" FreeleechPossible)
(label @"torrentFile" torrentFile)
Left err -> case err of
(E21 _tokensExhausted) -> do
-- Log that we're retrying due to token exhaustion
addEventSimple span "Freeleech tokens exhausted, retrying without tokens"
-- Retry without tokens
reqWithoutTokens <- mkRequest (t2 #reqName "redacted.request.retry" #useTokens False)
retryResult <- httpTorrent reqWithoutTokens
case retryResult of
Right torrentFile -> do
pure $
T2
(label @"freelechStatus" NoTokensRemaining)
(label @"torrentFile" torrentFile)
Left (E22 otherErr) -> do
appThrow span otherErr.otherError
Left (E21 _shouldNotHappen) -> do
appThrow span [fmt|Unexpected token exhaustion error on retry without tokens|]
(E22 otherError) -> appThrow span otherError.otherError
mkRedactedTorrentLink :: Arg "torrentGroupId" Int -> Text
mkRedactedTorrentLink torrentId = [fmt|https://redacted.sh/torrents.php?id={torrentId.unArg}|]
exampleSearch :: AppTransaction ()
exampleSearch = do
_x1 <-
redactedSearchAndInsert
(lbl #maxPages 0)
[ ("searchstr", "cherish"),
("artistname", "kirinji"),
-- ("year", "1982"),
-- ("format", "MP3"),
-- ("releasetype", "album"),
("order_by", "year")
]
_x3 <-
redactedSearchAndInsert
(lbl #maxPages 0)
[ ("searchstr", "mouss et hakim"),
("artistname", "mouss et hakim"),
-- ("year", "1982"),
-- ("format", "MP3"),
-- ("releasetype", "album"),
("order_by", "year")
]
_x2 <-
redactedSearchAndInsert
(lbl #maxPages 0)
[ ("searchstr", "thriller"),
("artistname", "michael jackson"),
-- ("year", "1982"),
-- ("format", "MP3"),
-- ("releasetype", "album"),
("order_by", "year")
]
pure ()
redactedRefreshArtist ::
(HasField "artistId" dat Int) =>
dat ->
AppTransaction (Label "newTorrents" [Label "torrentId" Int])
redactedRefreshArtist dat = do
redactedPagedSearchAndInsert
(lbl #maxPages 0)
( Json.key "torrentgroup" $
parseTourGroups
( t2
#torrentFieldName
"torrent"
#torrentIdName
"id"
)
)
( \page ->
redactedGetArtist
( T2
(getLabel @"artistId" dat)
page
)
)
-- | Do the search, return a transaction that inserts all results from all pages of the search.
redactedSearchAndInsert ::
(HasField "maxPages" opts Natural) =>
opts ->
[(ByteString, ByteString)] ->
AppTransaction (Label "newTorrents" [Label "torrentId" Int])
redactedSearchAndInsert opts extraArguments =
redactedPagedSearchAndInsert
opts
(Json.key "results" $ parseTourGroups (T2 (label @"torrentFieldName" "torrents") (label @"torrentIdName" "torrentId")))
( redactedSearch
(label @"actionArgs" extraArguments)
)
-- | Parse the standard Redacted reply object, @{ status: "success", response: ... }@ or throw an error.
--
-- The response might contain a `pages` field, if not we’ll return 1.
parseRedactedReplyStatus ::
(Monad m) =>
Json.ParseT ErrorTree m b ->
Json.ParseT ErrorTree m (T2 "pages" Natural "response" b)
parseRedactedReplyStatus inner = do
status <- Json.key "status" Json.asText
when (status /= "success") $ do
Json.throwCustomError ([fmt|Status was not "success", but {status}|] :: ErrorTree)
Json.key "response" $ do
pages <-
Json.keyMay
"pages"
( Field.toJsonParser
( Field.mapError singleError $
Field.jsonNumber >>> Field.boundedScientificIntegral @Int "not an Integer" >>> Field.integralToNatural
)
)
-- in case the field is missing, let’s assume there is only one page
<&> fromMaybe 1
res <- inner
pure $
T2
(label @"pages" pages)
(label @"response" res)
type TourGroups =
( Label
"tourGroups"
[ T2
"tourGroup"
TourGroup
"torrents"
[T2 "torrentId" Int "fullJsonResult" Json.Value]
]
)
data TourGroup = TourGroup
{ groupId :: Int,
groupName :: Text,
fullJsonResult :: Json.Value,
-- | Needed for sm0rt request recursion
groupArtists :: [Label "artistId" Int]
}
parseTourGroups ::
( Monad m,
HasField "torrentFieldName" opts Text,
HasField "torrentIdName" opts Text
) =>
opts ->
Json.ParseT err m TourGroups
parseTourGroups opts =
do
label @"tourGroups"
<$> ( catMaybes
<$> ( Json.eachInArray $ do
Json.keyMay opts.torrentFieldName (pure ()) >>= \case
-- not a torrent group, maybe some files or something (e.g. guitar tabs see Dream Theater Systematic Chaos)
Nothing -> pure Nothing
Just () -> do
groupId <- Json.key "groupId" (Json.asIntegral @_ @Int)
groupName <- Json.key "groupName" Json.asText
groupArtists <-
Json.keyMayMempty "artists" $
Json.eachInArray $
lbl #artistId <$> Json.key "id" (Json.asIntegral @_ @Int)
fullJsonResult <-
Json.asObject
-- remove torrents cause they are inserted separately below
<&> KeyMap.filterWithKey (\k _ -> k /= (opts.torrentFieldName & Key.fromText))
<&> Json.Object
let tourGroup = TourGroup {..}
torrents <- Json.keyLabel @"torrents" opts.torrentFieldName $
Json.eachInArray $ do
torrentId <- Json.keyLabel @"torrentId" opts.torrentIdName (Json.asIntegral @_ @Int)
fullJsonResultT <-
label @"fullJsonResult"
<$> ( Json.asObject
<&> KeyMap.mapKeyVal
( \k ->
if
-- some torrent objects use “snatched” instead of “snatches”
| k == "snatched" -> "snatches"
-- normalize the torrent id field
| k == (opts.torrentIdName & Key.fromText) -> "torrentId"
| otherwise -> k
)
id
<&> Json.Object
)
pure $ T2 torrentId fullJsonResultT
pure $ Just (T2 (label @"tourGroup" tourGroup) torrents)
)
)
testChunkBetween :: IO [NonEmpty Integer]
testChunkBetween = do
Cond.runConduit $
( do
Cond.yield [0]
Cond.yield [1, 2]
Cond.yield [3, 4]
Cond.yield []
Cond.yield [5, 6]
Cond.yield [7]
)
.| filterEmpty
.| chunkBetween (t2 #low 2 #high 4)
.| Cond.sinkList
filterEmpty :: (Monad m) => ConduitT [a] (NonEmpty a) m ()
filterEmpty = Cond.awaitForever yieldIfNonEmpty
-- | Chunk the given stream of lists into chunks that are between @low@ and @high@ (both incl).
-- The last chunk might be shorter than low.
chunkBetween ::
( HasField "low" p Natural,
HasField "high" p Natural,
Monad m
) =>
p ->
ConduitT (NonEmpty a) (NonEmpty a) m ()
chunkBetween opts = do
go mempty
where
low = min opts.low opts.high
high = max opts.low opts.high
high' = assertField (boundedNatural @Int) high
l = lengthNatural
go !acc = do
if l acc >= low
then do
let (c, rest) = List.splitAt high' acc
yieldIfNonEmpty c
go rest
else do
xs <- Cond.await
case xs of
Nothing -> yieldIfNonEmpty acc
Just xs' -> go (acc <> NonEmpty.toList xs')
yieldIfNonEmpty :: (Monad m) => [a] -> ConduitT i (NonEmpty a) m ()
yieldIfNonEmpty = \case
IsNonEmpty xs -> Cond.yield xs
IsEmpty -> pure ()
-- | maxPages: 0 means no limit, 1 means only the first page … etc
redactedPagedSearchAndInsert ::
(HasField "maxPages" opts Natural) =>
opts ->
Json.Parse ErrorTree TourGroups ->
-- | A redacted request that returns a paged result
( forall a.
Label "page" (Maybe Natural) ->
Json.Parse ErrorTree a ->
App a
) ->
AppTransaction (Label "newTorrents" [Label "torrentId" Int])
redactedPagedSearchAndInsert opts innerParser pagedRequest = do
-- The first search returns the amount of pages, so we use that to query all results piece by piece.
firstPage <- go Nothing
let totalPagesToFetch =
-- 0 requests all pages
if opts.maxPages == 0
then firstPage.pages
else min opts.maxPages firstPage.pages
let remainingPages = if totalPagesToFetch > 0 then totalPagesToFetch - 1 else 0
logInfo [fmt|Got the first page, found {remainingPages} more pages|]
let otherPagesNum = [(2 :: Natural) .. remainingPages]
Cond.runConduit @(Transaction (AppT IO)) $
( do
Cond.yield (singleton firstPage)
case otherPagesNum of
IsNonEmpty pages -> do
runConcurrentlyBunched' (lbl #batchSize 5) (go . Just <$> pages)
IsEmpty -> pure ()
)
-- .| Cond.takeC 3
.| chunkBetween (t2 #low 5 #high 10)
.| Cond.mapMC
( \block ->
block
& concatMap (.response.tourGroups)
& \case
IsNonEmpty tgs -> do
tgs & insertTourGroupsAndTorrents (lbl #searchPages $ block & lengthNatural)
pure $ tgs & concatMap (\tg -> tg.torrents <&> getLabel @"torrentId")
IsEmpty -> pure []
)
.| Cond.concatC
.| Cond.sinkList
<&> label @"newTorrents"
where
go mpage =
lift @Transaction $
pagedRequest
(label @"page" mpage)
( parseRedactedReplyStatus $ innerParser
)
insertTourGroupsAndTorrents ::
(Label "searchPages" Natural) ->
NonEmpty
( T2
"tourGroup"
TourGroup
"torrents"
[T2 "torrentId" Int "fullJsonResult" Json.Value]
) ->
AppTransaction ()
insertTourGroupsAndTorrents insertOpts dat = inSpan' "Insert Tour Groups & Torrents" $ \span -> do
addAttribute span "search_pages.length" (insertOpts.searchPages, naturalDecimalT)
addAttribute span "tour_group.length" (dat & lengthNatural, naturalDecimalT)
let tourGroups = dat <&> (.tourGroup)
let torrents = dat <&> (.torrents)
insertTourGroups tourGroups
>>= ( \res -> do
insertTorrents $
zipT2 $
T2
(label @"torrentGroupIdPg" $ res <&> (.tourGroupIdPg))
(label @"torrents" (torrents & toList))
-- Extract and insert artist data from both tour groups and torrents
let tourGroupJsons = tourGroups <&> \tg -> T2 (label @"jsonResult" tg.fullJsonResult) (label @"sourceType" "torrent_group")
let torrentJsons = dat & concatMap (\d -> d.torrents <&> \t -> T2 (label @"jsonResult" t.fullJsonResult) (label @"sourceType" "torrent"))
insertArtists (NonEmpty.toList tourGroupJsons <> torrentJsons)
)
insertTourGroups ::
NonEmpty TourGroup ->
AppTransaction [Label "tourGroupIdPg" Int]
insertTourGroups dats = do
let groupNames =
dats <&> \dat -> [fmt|{dat.groupId}: {dat.groupName}|]
logInfo [fmt|Inserting tour groups for {showPretty groupNames}|]
_ <-
execute
[fmt|
DELETE FROM redacted.torrent_groups
WHERE group_id = ANY (?::integer[])
|]
(Only $ (dats <&> (.groupId) & toList & PGArray :: PGArray Int))
executeManyReturningWith
[fmt|
INSERT INTO redacted.torrent_groups (
group_id, group_name, full_json_result
) VALUES
( ?, ? , ? )
ON CONFLICT (group_id) DO UPDATE SET
group_id = excluded.group_id,
group_name = excluded.group_name,
full_json_result = excluded.full_json_result
RETURNING (id)
|]
( dats
-- make sure we don’t have the same conflict target twice
& NonEmpty.nubBy (\a b -> a.groupId == b.groupId)
<&> ( \dat ->
( dat.groupId,
dat.groupName,
dat.fullJsonResult
)
)
)
(label @"tourGroupIdPg" <$> Dec.fromField @Int)
insertTorrents ::
[ T2
"torrentGroupIdPg"
Int
"torrents"
[T2 "torrentId" Int "fullJsonResult" Json.Value]
] ->
AppTransaction ()
insertTorrents dats = do
_ <-
execute
[sql|
DELETE FROM redacted.torrents_json
WHERE torrent_id = ANY (?::integer[])
|]
( Only $
PGArray
[ torrent.torrentId
| dat <- dats,
torrent <- dat.torrents
]
)
execute
[sql|
INSERT INTO redacted.torrents_json
( torrent_group
, torrent_id
, full_json_result)
SELECT *
FROM UNNEST(
?::integer[]
, ?::integer[]
, ?::jsonb[]
) AS inputs(
torrent_group
, torrent_id
, full_json_result)
|]
( [ T3
(getLabel @"torrentGroupIdPg" dat)
(getLabel @"torrentId" group)
(getLabel @"fullJsonResult" group)
| dat <- dats,
group <- dat.torrents
]
& List.nubBy (\a b -> a.torrentId == b.torrentId)
& unzip3PGArray
@"torrentGroupIdPg"
@Int
@"torrentId"
@Int
@"fullJsonResult"
@Json.Value
)
pure ()
-- | Traverse over the given function in parallel, but only allow a certain amount of concurrent requests.
-- Will start new threads as soon as a resource becomes available, but always return results in input ordering.
runConcurrentlyBunched' ::
forall m opts a.
( MonadUnliftIO m,
HasField "batchSize" opts Natural
) =>
opts ->
-- | list of actions to run
NonEmpty (m a) ->
ConduitT () (NonEmpty a) m ()
runConcurrentlyBunched' opts acts = do
let batchSize = assertField (boundedNatural @Int) opts.batchSize
runInIO <- lift askRunInIO
-- NB: make sure none of the asyncs escape from here
Cond.transPipe (Cond.runResourceT @m) $ do
-- This use of resourceForkWith looks a little off, but it’s the only way to return an `Async a`, I hope it brackets correctly lol
ctx <- Otel.getContext
let spawn :: m a -> Cond.ResourceT m (Async a)
spawn f = resourceForkWith (\io -> async (io >> Otel.attachContext ctx >> runInIO f)) (pure ())
qsem <- newQSem batchSize
-- spawn all asyncs here, but limit how many get run consecutively by threading through a semaphore
spawned <- for acts $ \act ->
lift $ spawn $ withQSem qsem $ act
Cond.yieldMany (spawned & NonEmpty.toList)
.| awaitAllReadyAsyncs
-- | Consume as many asyncs as are ready and return their results.
--
-- Make sure they are already running (if you use 'Cond.yieldM' they are only started when awaited by the conduit).
--
-- If any async throws an exception, the exception will be thrown in the conduit.
-- Already running asyncs will not be cancelled. (TODO: can we somehow make that a thing?)
awaitAllReadyAsyncs :: forall m a. (MonadIO m) => ConduitT (Async a) (NonEmpty a) m ()
awaitAllReadyAsyncs = go
where
-- wait for the next async and then consume as many as are already done
go :: ConduitT (Async a) (NonEmpty a) m ()
go = do
Cond.await >>= \case
Nothing -> pure ()
Just nextAsync -> do
res <- Async.wait nextAsync
-- consume as many asyncs as are already done
goAllReady (RevList.singleton res)
goAllReady :: RevList a -> ConduitT (Async a) (NonEmpty a) m ()
goAllReady !acc = do
next <- Cond.await
case next of
Nothing -> yieldIfNonEmptyRev acc
Just a -> do
thereAlready <- Async.poll a
case thereAlready of
Nothing -> do
-- consumed everything that was available, yield and wait for the next block
yieldIfNonEmptyRev acc
Cond.leftover a
go
Just _ -> do
-- will not block
res <- Async.wait a
goAllReady (acc <> RevList.singleton res)
yieldIfNonEmptyRev :: RevList a -> ConduitT (Async a) (NonEmpty a) m ()
yieldIfNonEmptyRev r = do
case r & RevList.revListToList of
IsNonEmpty e -> Cond.yield e
IsEmpty -> pure ()
testAwaitAllReadyAsyncs :: IO [[Char]]
testAwaitAllReadyAsyncs =
Cond.runConduit $
( do
running <-
lift $
sequence
[ async (print "foo" >> pure 'a'),
async (pure 'b'),
async (threadDelay 5000 >> pure 'c'),
async (print "bar" >> pure '5'),
async (threadDelay 1_000_000 >> print "lol" >> pure 'd'),
async (error "no"),
async (print "baz" >> pure 'f')
]
Cond.yieldMany running
)
.| awaitAllReadyAsyncs
.| Cond.mapC toList
.| Cond.sinkList
-- | Run the field parser and throw an uncatchable assertion error if it fails.
assertField :: (HasCallStack) => FieldParser from to -> from -> to
assertField parser from = Field.runFieldParser parser from & unwrapError
boundedNatural :: forall i. (Integral i, Bounded i) => FieldParser Natural i
boundedNatural = lmap naturalToInteger (Field.bounded @i "boundedNatural")
redactedGetTorrentFileAndInsert ::
( HasField "torrentId" r Int,
HasField "freelechTokensExhaustedAt" r (Maybe UTCTime)
) =>
r ->
AppTransaction (T2 "freelechStatus" FreeleechStatus "torrentFile" ByteString)
redactedGetTorrentFileAndInsert dat = inSpan' "Redacted Get Torrent File and Insert" $ \span -> do
result <- lift $ redactedGetTorrentFile dat
let bytes = result.torrentFile
execute
[sql|
UPDATE redacted.torrents_json
SET torrent_file = ?::bytea
WHERE torrent_id = ?::integer
|]
( (Binary bytes :: Binary ByteString),
dat.torrentId
)
>>= lift . assertOneUpdated span "redactedGetTorrentFileAndInsert"
>>= \() -> pure result
getTorrentFileById ::
( HasField "torrentId" r Int
) =>
r ->
AppTransaction (Maybe (Label "torrentFile" ByteString))
getTorrentFileById dat = do
queryWith
[sql|
SELECT torrent_file
FROM redacted.torrents
WHERE torrent_id = ?::integer
|]
(Only $ (dat.torrentId :: Int))
(fmap @Maybe (label @"torrentFile") <$> Dec.byteaMay)
>>= ensureSingleRow
updateTransmissionTorrentHashById ::
( HasField "torrentId" r Int,
HasField "torrentHash" r Text
) =>
r ->
AppTransaction (Label "numberOfRowsAffected" Natural)
updateTransmissionTorrentHashById dat = do
execute
[sql|
UPDATE redacted.torrents_json
SET transmission_torrent_hash = ?::text
WHERE torrent_id = ?::integer
|]
( dat.torrentHash :: Text,
dat.torrentId :: Int
)
assertOneUpdated ::
( HasField "numberOfRowsAffected" r Natural
) =>
Otel.Span ->
Text ->
r ->
App ()
assertOneUpdated span name x = case x.numberOfRowsAffected of
1 -> pure ()
n -> appThrow span ([fmt|{name :: Text}: Expected to update exactly one row, but updated {n :: Natural} row(s)|])
data TorrentData transmissionInfo = TorrentData
{ groupId :: Int,
torrentId :: Int,
releaseType :: ReleaseType,
seedingWeight :: Int,
artists :: [T2 "artistId" Int "artistName" Text],
torrentGroupJson :: TorrentGroupJson,
torrentStatus :: TorrentStatus transmissionInfo,
torrentFormat :: Text
}
-- | https://redacted.sh/wiki.php?action=article&id=455#_1804298149
data ReleaseType = ReleaseType {intKey :: Int, stringKey :: Text}
deriving stock (Eq, Show)
releaseTypeFromTextOrIntKey :: Text -> ReleaseType
releaseTypeFromTextOrIntKey t =
allReleaseTypesSorted
& List.find
( \rt -> do
rt.stringKey == t || buildText intDecimalT rt.intKey == t
)
& fromMaybe (ReleaseType {intKey = (-1), stringKey = t})
releaseTypeComparison :: Comparison ReleaseType
releaseTypeComparison = listIndexComparison allReleaseTypesSorted
allReleaseTypesSorted :: [ReleaseType]
allReleaseTypesSorted =
[ releaseTypeAlbum,
releaseTypeLiveAlbum,
releaseTypeAnthology,
releaseTypeSoundtrack,
releaseTypeEP,
releaseTypeCompilation,
releaseTypeSingle,
releaseTypeRemix,
releaseTypeBootleg,
releaseTypeInterview,
releaseTypeMixtape,
releaseTypeDemo,
releaseTypeConcertRecording,
releaseTypeDJMix,
releaseTypeUnknown,
releaseTypeProducedBy,
releaseTypeComposition,
releaseTypeRemixedBy,
releaseTypeGuestAppearance
]
-- | The search allows us to pass which release types we are interested in,
-- however I want to disallow certain types, but they don’t provide a mechanism to do that.
-- So instead let’s overapproximate the ids in case new types get added in the future.
releaseTypeIntsOverapproximated :: IntSet
releaseTypeIntsOverapproximated = IntSet.fromList $ [1 .. 50] <> [1000 .. 1050]
releaseTypesOverapproximatedWithout :: [ReleaseType] -> IntSet
releaseTypesOverapproximatedWithout disallowed = do
let disallowedInts = disallowed <&> (.intKey)
IntSet.difference releaseTypeIntsOverapproximated (IntSet.fromList disallowedInts)
releaseTypeAlbum, releaseTypeSoundtrack, releaseTypeEP, releaseTypeAnthology, releaseTypeCompilation, releaseTypeSingle, releaseTypeLiveAlbum, releaseTypeRemix, releaseTypeBootleg, releaseTypeInterview, releaseTypeMixtape, releaseTypeDemo, releaseTypeConcertRecording, releaseTypeDJMix, releaseTypeUnknown, releaseTypeProducedBy, releaseTypeComposition, releaseTypeRemixedBy, releaseTypeGuestAppearance :: ReleaseType
releaseTypeAlbum = ReleaseType 1 "Album"
releaseTypeSoundtrack = ReleaseType 3 "Soundtrack"
releaseTypeEP = ReleaseType 5 "EP"
releaseTypeAnthology = ReleaseType 6 "Anthology"
releaseTypeCompilation = ReleaseType 7 "Compilation"
releaseTypeSingle = ReleaseType 9 "Single"
releaseTypeLiveAlbum = ReleaseType 11 "Live album"
releaseTypeRemix = ReleaseType 13 "Remix"
releaseTypeBootleg = ReleaseType 14 "Bootleg"
releaseTypeInterview = ReleaseType 15 "Interview"
releaseTypeMixtape = ReleaseType 16 "Mixtape"
releaseTypeDemo = ReleaseType 17 "Demo"
releaseTypeConcertRecording = ReleaseType 18 "Concert Recording"
releaseTypeDJMix = ReleaseType 19 "DJ Mix"
releaseTypeUnknown = ReleaseType 21 "Unknown"
releaseTypeProducedBy = ReleaseType 1021 "Produced By"
releaseTypeComposition = ReleaseType 1022 "Composition"
releaseTypeRemixedBy = ReleaseType 1023 "Remixed By"
releaseTypeGuestAppearance = ReleaseType 1024 "Guest Appearance"
data TorrentGroupJson = TorrentGroupJson
{ groupName :: Text,
groupYear :: Natural
}
data TorrentStatus transmissionInfo
= NoTorrentFileYet
| NotInTransmissionYet
| InTransmission (T2 "torrentHash" Text "transmissionInfo" transmissionInfo)
getTorrentById :: (MonadPostgres m, HasField "torrentId" r Int, MonadThrow m) => r -> Transaction m Json.Value
getTorrentById dat = do
queryWith
[sql|
SELECT full_json_result FROM redacted.torrents
WHERE torrent_id = ?::integer
|]
(getLabel @"torrentId" dat)
(Dec.json Json.asValue)
>>= ensureSingleRow
data GetBestTorrentsFilter = GetBestTorrentsFilter
{ onlyArtist :: Maybe (Label "artistRedactedId" Int),
onlyTheseTorrents :: Maybe ([Label "torrentId" Int]),
disallowedReleaseTypes :: [ReleaseType],
limitResults :: Maybe Natural,
ordering :: BestTorrentsOrdering,
onlyFavourites :: Bool
}
data BestTorrentsOrdering = BySeedingWeight | ByLastReleases
-- | Get best recommendation: one highest-weighted album per similar artist
getBestRecommendations ::
( MonadPostgres m,
HasField "disallowedReleaseTypes" opts [ReleaseType],
HasField "limitResults" opts (Maybe Natural)
) =>
opts ->
Transaction m [T2 "torrentData" (TorrentData ()) "recommendedBy" [T3 "favoritedArtistId" Int "favoritedArtistName" Text "recommendedArtistId" Int]]
getBestRecommendations opts = do
queryWith
[sql|
WITH
favorited_artists AS (
SELECT DISTINCT unnest(artist_ids) as artist_id
FROM redacted.torrents_json
WHERE transmission_torrent_hash IS NOT NULL
UNION
SELECT artist_id
FROM redacted.artist_favourites
),
valid_recommendations AS (
SELECT
sa.artist_id as favorited_artist_id,
sa.similar_artist_id as recommended_artist_id,
a.artist_name as favorited_artist_name,
sa.rn
FROM (
SELECT
artist_id,
similar_artist_id,
ROW_NUMBER() OVER (PARTITION BY artist_id ORDER BY score DESC) as rn
FROM redacted.similar_artists
WHERE
artist_id IN (SELECT artist_id FROM favorited_artists)
AND similar_artist_id NOT IN (SELECT artist_id FROM favorited_artists)
) sa
JOIN redacted.artists a ON a.artist_id = sa.artist_id
),
top_recommendations AS (
SELECT DISTINCT ON (rec_id)
tg.group_id,
t.torrent_id,
t.seeding_weight,
tg.full_json_result->>'releaseType' AS release_type,
COALESCE(
t.full_json_result->'artists',
tg.full_json_result->'artists',
'[]'::jsonb
) as artists,
t.artist_ids as artist_ids,
tg.full_json_result->>'groupName' AS group_name,
tg.full_json_result->>'groupYear' AS group_year,
t.torrent_file IS NOT NULL AS has_torrent_file,
t.transmission_torrent_hash,
t.full_json_result->>'encoding' AS torrent_format
FROM (SELECT recommended_artist_id FROM valid_recommendations) vr
CROSS JOIN LATERAL unnest(ARRAY[vr.recommended_artist_id]) AS rec_id
JOIN redacted.torrents_json t ON t.artist_ids @> ARRAY[rec_id]
JOIN redacted.torrent_groups tg ON tg.id = t.torrent_group
WHERE
tg.full_json_result->>'releaseType' <> ALL (?::text[])
ORDER BY
rec_id,
t.seeding_weight DESC
),
final_unsorted AS (
SELECT
tr.group_id,
tr.torrent_id,
tr.seeding_weight,
tr.release_type,
tr.artists,
tr.group_name,
tr.group_year,
tr.has_torrent_file,
tr.transmission_torrent_hash,
tr.torrent_format,
(
SELECT json_agg(
json_build_object(
'favorited_artist_id', vr2.favorited_artist_id,
'favorited_artist_name', vr2.favorited_artist_name,
'recommended_artist_id', vr2.recommended_artist_id
)
)
FROM valid_recommendations vr2
WHERE ARRAY[vr2.recommended_artist_id] <@ tr.artist_ids
) as recommendation_mappings
FROM top_recommendations tr
ORDER BY
(SELECT MIN(vr2.rn) FROM valid_recommendations vr2 WHERE ARRAY[vr2.recommended_artist_id] <@ tr.artist_ids)
)
SELECT * FROM final_unsorted
ORDER BY seeding_weight DESC
LIMIT ?::int
|]
( (opts.disallowedReleaseTypes & concatMap (\rt -> [rt.stringKey, rt.intKey & buildText intDecimalT]) & PGArray :: PGArray Text),
opts.limitResults <&> naturalToInteger :: Maybe Integer
)
( do
groupId <- Dec.fromField @Int
torrentId <- Dec.fromField @Int
seedingWeight <- Dec.fromField @Int
releaseType <- releaseTypeFromTextOrIntKey <$> Dec.text
artists <- Dec.fromField @Json.Value
groupName <- Dec.text
groupYear <- Dec.textParse Field.decimalNatural
hasTorrentFile <- Dec.fromField @Bool
transmissionTorrentHash <- Dec.fromField @(Maybe Text)
torrentFormat <- Dec.text
recommendationMappings <- Dec.fromField @Json.Value
let torrentData =
TorrentData
{ groupId = groupId,
torrentId = torrentId,
seedingWeight = seedingWeight,
releaseType = releaseType,
artists = case Json.parseValue
( Json.eachInArray $ do
artistId <- Json.key "id" (Json.asIntegral @_ @Int)
artistName <- Json.key "name" Json.asText
pure $
T2
(label @"artistId" artistId)
(label @"artistName" artistName)
)
artists of
Left _ -> []
Right res -> res,
torrentGroupJson =
TorrentGroupJson
{ groupName = groupName,
groupYear = groupYear
},
torrentStatus = case transmissionTorrentHash of
Nothing -> if hasTorrentFile then NotInTransmissionYet else NoTorrentFileYet
Just hash -> InTransmission (T2 (label @"torrentHash" hash) (label @"transmissionInfo" ())),
torrentFormat = torrentFormat
}
recommendedBy = case Json.parseValue
( Json.eachInArray $ do
favoritedArtistId <- Json.key "favorited_artist_id" (Json.asIntegral @_ @Int)
favoritedArtistName <- Json.key "favorited_artist_name" Json.asText
recommendedArtistId <- Json.key "recommended_artist_id" (Json.asIntegral @_ @Int)
pure $
T3
(label @"favoritedArtistId" favoritedArtistId)
(label @"favoritedArtistName" favoritedArtistName)
(label @"recommendedArtistId" recommendedArtistId)
)
recommendationMappings of
Left _ -> []
Right res -> res
pure $
T2
(label @"torrentData" torrentData)
(label @"recommendedBy" recommendedBy)
)
-- | Find the best torrent for each torrent group (based on the seeding_weight)
getBestTorrents ::
(MonadPostgres m) =>
GetBestTorrentsFilter ->
Transaction m [TorrentData ()]
getBestTorrents opts = do
queryWith
( [sql|
WITH
artist_has_been_snatched AS (
SELECT DISTINCT artist_id
FROM (
SELECT
UNNEST(artist_ids) as artist_id,
t.torrent_file IS NOT NULL as has_torrent_file
FROM redacted.torrents t) as _
WHERE has_torrent_file
),
filtered_torrents AS (
SELECT DISTINCT ON (torrent_group)
id
FROM
redacted.torrents
JOIN LATERAL
-- filter everything that’s not a favourite if requested
(SELECT (
artist_ids && ARRAY(
SELECT DISTINCT unnest(artist_ids)
FROM redacted.torrents_json
WHERE transmission_torrent_hash IS NOT NULL
UNION
SELECT artist_id
FROM redacted.artist_favourites
)
OR artist_ids && ARRAY(SELECT artist_id FROM artist_has_been_snatched)
) as is_favourite) as _
ON (NOT ?::bool OR is_favourite)
WHERE
-- filter by artist id
(?::bool OR (?::int = any (artist_ids)))
-- filter by torrent ids
AND
(?::bool OR torrent_id = ANY (?::int[]))
ORDER BY
torrent_group,
-- prefer torrents which we already downloaded
torrent_file,
seeding_weight DESC
),
prepare1 AS (
SELECT
tg.group_id,
t.torrent_id,
t.seeding_weight,
tg.full_json_result->>'releaseType' AS release_type,
-- TODO: different endpoints handle this differently (e.g. action=search and action=artist), we should unify this while parsing
COALESCE(
t.full_json_result->'artists',
tg.full_json_result->'artists',
'[]'::jsonb
) as artists,
t.artist_ids as artist_ids,
tg.full_json_result->>'groupName' AS group_name,
tg.full_json_result->>'groupYear' AS group_year,
t.torrent_file IS NOT NULL AS has_torrent_file,
t.transmission_torrent_hash,
t.full_json_result->>'encoding' AS torrent_format
FROM filtered_torrents f
JOIN redacted.torrents t ON t.id = f.id
JOIN redacted.torrent_groups tg ON tg.id = t.torrent_group
WHERE
tg.full_json_result->>'releaseType' <> ALL (?::text[])
)
SELECT
group_id,
torrent_id,
seeding_weight,
release_type,
artists,
group_name,
group_year,
has_torrent_file,
transmission_torrent_hash,
torrent_format
FROM prepare1
|]
<> case opts.ordering of
BySeedingWeight -> [fmt|ORDER BY seeding_weight DESC|] <> "\n"
ByLastReleases -> [fmt|ORDER BY group_id DESC|] <> "\n"
<> [sql|
LIMIT ?::int
|]
)
( do
let (onlyArtistB, onlyArtistId) = case opts.onlyArtist of
Nothing -> (True, 0)
Just a -> (False, a.artistRedactedId)
let (onlyTheseTorrentsB, onlyTheseTorrents) = case opts.onlyTheseTorrents of
Nothing -> (True, PGArray [])
Just a -> (False, a <&> (.torrentId) & PGArray)
( opts.onlyFavourites :: Bool,
onlyArtistB :: Bool,
onlyArtistId :: Int,
onlyTheseTorrentsB :: Bool,
onlyTheseTorrents,
(opts.disallowedReleaseTypes & concatMap (\rt -> [rt.stringKey, rt.intKey & buildText intDecimalT]) & PGArray :: PGArray Text),
opts.limitResults <&> naturalToInteger :: Maybe Integer
)
)
( do
groupId <- Dec.fromField @Int
torrentId <- Dec.fromField @Int
seedingWeight <- Dec.fromField @Int
releaseType <- releaseTypeFromTextOrIntKey <$> Dec.text
artists <- Dec.json $
Json.eachInArray $ do
id_ <- Json.keyLabel @"artistId" "id" (Json.asIntegral @_ @Int)
name <- Json.keyLabel @"artistName" "name" Json.asText
pure $ T2 id_ name
torrentGroupJson <- do
groupName <- Dec.text
groupYear <- Dec.textParse Field.decimalNatural
pure $ TorrentGroupJson {..}
hasTorrentFile <- Dec.fromField @Bool
transmissionTorrentHash <- Dec.fromField @(Maybe Text)
torrentFormat <- Dec.text
pure $
TorrentData
{ torrentStatus =
if
| not hasTorrentFile -> NoTorrentFileYet
| Nothing <- transmissionTorrentHash -> NotInTransmissionYet
| Just hash <- transmissionTorrentHash ->
InTransmission $
T2 (label @"torrentHash" hash) (label @"transmissionInfo" ()),
torrentFormat = case torrentFormat of
"Lossless" -> "flac"
"V0 (VBR)" -> "V0"
"V2 (VBR)" -> "V2"
"320" -> "320"
"256" -> "256"
o -> o,
..
}
)
getArtistNameById :: (MonadPostgres m, HasField "artistId" r Int) => r -> Transaction m (Maybe Text)
getArtistNameById dat = do
queryFirstRowWithMaybe
[sql|
SELECT artist_name FROM redacted.artists
WHERE artist_id = ?::int
LIMIT 1
|]
(getLabel @"artistId" dat)
(Dec.fromField @Text)
-- | Do a request to the redacted API. If you know what that is, you know how to find the API docs.
mkRedactedApiRequest ::
( HasField "action" p ByteString,
HasField "actionArgs" p [(ByteString, Maybe ByteString)]
) =>
p ->
App Http.RequestOptions
mkRedactedApiRequest dat = do
authKey <- getRedactedApiKey
pure $
(Http.mkRequestOptions (t2 #method "GET" #host "redacted.sh"))
{ Http.path = mkOptional ["ajax.php"],
Http.queryParams = mkOptional (("action", Just dat.action) : dat.actionArgs),
Http.headers = mkOptional [("Authorization", authKey)]
}
httpTorrent ::
Http.RequestOptions ->
App (Either (E2 "tokensExhausted" () "otherError" AppException) ByteString)
httpTorrent reqOpts = do
resp <- Http.executeRequestOptions reqOpts Nothing
let statusCode = resp & Http.getResponseStatus & (.statusCode)
contentType =
resp
& Http.getResponseHeaders
& List.lookup "content-type"
<&> Wai.parseContentType
<&> (\(ct, _mimeAttributes) -> ct)
responseBody = resp & Http.getResponseBody
pure $
if
| statusCode == 200,
Just "application/x-bittorrent" <- contentType ->
Right responseBody
| statusCode == 200,
Just otherType <- contentType ->
Left $ e22 #otherError $ AppExceptionPretty [[fmt|Redacted returned a non-torrent body, with content-type "{otherType}"|]]
| statusCode == 200,
Nothing <- contentType ->
Left $ e22 #otherError $ AppExceptionPretty [[fmt|Redacted returned a body with unspecified content type|]]
| statusCode == 400 ->
-- Check if this is a token exhaustion error
case Json.eitherDecode (responseBody & toLazyBytes) of
Right (json :: Json.Value) ->
case Parse.runParse "parse error response" (Json.parseJsonValue (Json.key "error" Json.asText)) json of
Right errorMsg
| "You do not have any freeleech tokens left" `Text.isInfixOf` errorMsg ->
Left $ e21 #tokensExhausted ()
_ ->
Left $ e22 #otherError $ AppExceptionPretty [[fmt|Redacted returned a 400 error|], pretty resp]
Left _ ->
Left $ e22 #otherError $ AppExceptionPretty [[fmt|Redacted returned a 400 error|], pretty resp]
| code <- statusCode ->
Left $ e22 #otherError $ AppExceptionPretty [[fmt|Redacted returned an non-200 error code, code {code}|], pretty resp]
redactedApiRequestJson ::
( HasField "action" p ByteString,
HasField "actionArgs" p [(ByteString, Maybe ByteString)]
) =>
Otel.Span ->
p ->
Json.Parse ErrorTree a ->
App a
redactedApiRequestJson span dat parser = do
addAttribute span "redacted.request" (toOtelJsonAttr (T2 (getLabel @"action" dat) (getLabel @"actionArgs" dat)))
mkRedactedApiRequest dat
>>= Http.httpJsonWithRateLimit defaults parser
-- Type-safe similar artists response
data SimilarArtist = SimilarArtist
{ artistId :: Int,
artistName :: Text,
score :: Int
}
deriving stock (Show, Eq)
similarArtistToEnc :: SimilarArtist -> Enc.Enc
similarArtistToEnc sa =
Enc.object
[ ("id", Enc.int sa.artistId),
("name", Enc.text sa.artistName),
("score", Enc.int sa.score)
]
redactedGetSimilarArtists ::
( HasField "artistId" r Int,
HasField "limit" r (Maybe Natural)
) =>
r ->
App [SimilarArtist]
redactedGetSimilarArtists dat =
inSpan' "Redacted Get Similar Artists" $ \span -> do
let actionArgs =
[("id", Just $ buildBytes intDecimalB dat.artistId)]
<> case dat.limit of
Nothing -> []
Just lim -> [("limit", Just $ buildBytes naturalDecimalB lim)]
redactedApiRequestJson
span
( t2
#action
"similar_artists"
#actionArgs
actionArgs
)
( do
status <- Json.key "status" Json.asText
when (status /= "success") $ do
Json.throwCustomError ([fmt|Status was not "success", but {status}|] :: ErrorTree)
Json.key "response" $
Json.eachInArray $ do
artistId <- Json.key "id" (Json.asIntegral @_ @Int)
artistName <- Json.key "name" Json.asText
score <- Json.key "score" (Json.asIntegral @_ @Int)
pure $ SimilarArtist {..}
)
-- Version that returns raw JSON for exploration
redactedGetSimilarArtistsRaw ::
( HasField "artistId" r Int,
HasField "limit" r (Maybe Natural)
) =>
r ->
App Json.Value
redactedGetSimilarArtistsRaw dat =
inSpan' "Redacted Get Similar Artists Raw" $ \span -> do
let actionArgs =
[("id", Just $ buildBytes intDecimalB dat.artistId)]
<> case dat.limit of
Nothing -> []
Just lim -> [("limit", Just $ buildBytes naturalDecimalB lim)]
redactedApiRequestJson
span
( t2
#action
"similar_artists"
#actionArgs
actionArgs
)
Json.asValue
-- Simple test server for API exploration
testServer :: App ()
testServer = do
liftIO $ putStrLn "Starting test server on http://localhost:9094"
liftIO $ putStrLn "Endpoints:"
liftIO $ putStrLn " curl 'http://localhost:9094/similar-raw?artist=2785&limit=5' # Raw JSON"
liftIO $ putStrLn " curl 'http://localhost:9094/similar?artist=2785&limit=5' # Type-safe"
withRunInIO $ \runInIO ->
Warp.run 9094 $ \req respond -> do
let path = req & Wai.pathInfo
case path of
["similar-raw"] -> do
let parseParam name parser =
req & Wai.queryString & lookup name >>= \mbs ->
mbs >>= \bs ->
Field.runFieldParser parser bs & hush
let artistId = parseParam "artist" (Field.utf8 >>> Field.signedDecimal >>> Field.bounded @Int "int")
let limit = parseParam "limit" (Field.utf8 >>> Field.decimalNatural)
case artistId of
Nothing -> respond $ Wai.responseLBS Http.badRequest400 [] "Missing or invalid artist parameter"
Just aid -> do
result <- runInIO $ redactedGetSimilarArtistsRaw (t2 #artistId aid #limit limit)
respond $
Wai.responseLBS
Http.ok200
[("Content-Type", "application/json")]
(result & Json.encode)
["similar"] -> do
let parseParam name parser =
req & Wai.queryString & lookup name >>= \mbs ->
mbs >>= \bs ->
Field.runFieldParser parser bs & hush
let artistId = parseParam "artist" (Field.utf8 >>> Field.signedDecimal >>> Field.bounded @Int "int")
let limit = parseParam "limit" (Field.utf8 >>> Field.decimalNatural)
case artistId of
Nothing -> respond $ Wai.responseLBS Http.badRequest400 [] "Missing or invalid artist parameter"
Just aid -> do
result <- runInIO $ redactedGetSimilarArtists (t2 #artistId aid #limit limit)
respond $
Wai.responseLBS
Http.ok200
[("Content-Type", "application/json")]
(result & Enc.list similarArtistToEnc & Enc.encToBytesUtf8 & toLazyBytes)
_ -> respond $ Wai.responseLBS Http.notFound404 [] "Available endpoints: /similar, /similar-raw"
-- | Insert similar artists data into the database
insertSimilarArtists ::
( HasField "artistId" dat Int,
MonadPostgres m
) =>
dat ->
[SimilarArtist] ->
Transaction m ()
insertSimilarArtists dat similarArtists = do
-- Delete existing similar artists for this artist to avoid duplicates
_ <-
execute
[sql|
DELETE FROM redacted.similar_artists
WHERE artist_id = ?::integer
|]
(Only dat.artistId)
-- Insert new similar artists
case similarArtists of
[] -> pure () -- No similar artists to insert
artists -> do
_ <-
execute
[sql|
INSERT INTO redacted.similar_artists
(artist_id, similar_artist_id, similar_artist_name, score)
SELECT * FROM UNNEST(
?::integer[],
?::integer[],
?::text[],
?::integer[]
)
|]
( PGArray (artists <&> const dat.artistId),
PGArray (artists <&> (.artistId)),
PGArray (artists <&> (.artistName)),
PGArray (artists <&> (.score))
)
pure ()
-- | Fetch and store similar artists for a given artist
populateSimilarArtistsForArtist ::
( HasField "artistId" dat Int
) =>
dat ->
AppTransaction (Label "similarArtistsCount" Natural)
populateSimilarArtistsForArtist dat = inSpan' "Populate Similar Artists" $ \span -> do
addAttribute span "artist.id" (dat.artistId, intDecimalT)
-- Fetch similar artists from the API
similarArtists <- lift $ redactedGetSimilarArtists (t2 #artistId dat.artistId #limit (Just 20))
addAttribute span "similar-artists.fetched" (List.length similarArtists, intDecimalT)
-- Insert into database
insertSimilarArtists dat similarArtists
pure $ label @"similarArtistsCount" (lengthNatural similarArtists)
-- | Populate similar artists for all favorite artists
populateSimilarArtistsForFavorites :: AppTransaction (Label "processedArtists" Natural)
populateSimilarArtistsForFavorites = inSpan' "Populate Similar Artists for Favorites" $ \span -> do
-- Get all favorite artist IDs
favoriteArtistIds <-
queryWith
[sql|
SELECT DISTINCT unnest(artist_ids) as artist_id
FROM redacted.torrents_json
WHERE transmission_torrent_hash IS NOT NULL
UNION
SELECT artist_id
FROM redacted.artist_favourites
ORDER BY artist_id
|]
()
(Dec.fromField @Int)
addAttribute span "favorite-artists.count" (List.length favoriteArtistIds, intDecimalT)
-- Process each favorite artist
processedCount <- for favoriteArtistIds $ \artistId -> do
result <- populateSimilarArtistsForArtist (label @"artistId" artistId)
logInfo [fmt|Populated {result.similarArtistsCount} similar artists for artist {artistId}|]
pure result.similarArtistsCount
let totalProcessed = processedCount & map naturalToInteger & sum & (fromInteger :: Integer -> Natural)
addAttribute span "similar-artists.total-populated" (totalProcessed, naturalDecimalT)
pure $ label @"processedArtists" (lengthNatural favoriteArtistIds)
-- | Fetch releases for all similar artists to populate the torrent database
populateReleasesForSimilarArtists :: AppTransaction (Label "processedArtists" Natural)
populateReleasesForSimilarArtists = inSpan' "Populate Releases for Similar Artists" $ \span -> do
-- Get all similar artist IDs that we don't have releases for yet
similarArtistIds <-
queryWith
[sql|
SELECT DISTINCT sa.similar_artist_id, sa.similar_artist_name
FROM redacted.similar_artists sa
WHERE sa.similar_artist_id NOT IN (
-- Only fetch artists we don't already have data for
SELECT DISTINCT unnest(artist_ids)
FROM redacted.torrent_groups
WHERE artist_ids IS NOT NULL
)
ORDER BY sa.similar_artist_id
LIMIT 20 -- Process in batches to avoid overwhelming the API
|]
()
( do
artistId <- Dec.fromField @Int
artistName <- Dec.fromField @Text
pure (artistId, artistName)
)
addAttribute span "similar-artists-to-fetch.count" (List.length similarArtistIds, intDecimalT)
-- Search for releases by each similar artist
totalNewTorrents <- for similarArtistIds $ \(artistId, artistName) -> do
inSpan' [fmt|Search Similar Artist: {artistName}|] $ \artistSpan -> do
addAttribute artistSpan "artist.id" (artistId, intDecimalT)
addAttribute artistSpan "artist.name" artistName
logInfo [fmt|Searching for releases by similar artist: {artistName} (ID: {artistId})|]
let allowedReleaseTypes =
releaseTypesOverapproximatedWithout
[ releaseTypeCompilation
]
let releaseTypeParam =
allowedReleaseTypes
& IntSet.toList
& map (buildText intDecimalT)
& Text.intercalate ","
& textToBytesUtf8
result <-
redactedSearchAndInsert
-- only fetch the first page that should be enough for suggesting a release
(lbl #maxPages 1)
[ ("artistname", textToBytesUtf8 artistName),
-- Exclude compilations, DJ mixes, mixtapes, and remixes at API level for performance
("releasetype", releaseTypeParam)
]
let newTorrentsCount = List.length result.newTorrents
addAttribute artistSpan "torrents.found" (newTorrentsCount, intDecimalT)
logInfo [fmt|Found {newTorrentsCount} new torrents for artist {artistName}|]
pure (fromIntegral newTorrentsCount)
let totalTorrents = totalNewTorrents & map naturalToInteger & sum & (fromInteger :: Integer -> Natural)
addAttribute span "similar-artists.total-new-torrents" (totalTorrents, naturalDecimalT)
pure $ label @"processedArtists" (lengthNatural similarArtistIds)
-- | Extract and insert artist data from JSON into the artists table
insertArtists ::
[T2 "jsonResult" Json.Value "sourceType" Text] ->
AppTransaction ()
insertArtists jsonInputs = inSpan' "Insert Artists" $ \span -> do
let allArtists =
jsonInputs
& concatMap
( \input ->
case Json.parseValue
( Json.key "artists" $ Json.eachInArray $ do
artistId <- Json.key "id" (Json.asIntegral @_ @Int)
artistName <- Json.key "name" Json.asText
pure (artistId, artistName)
)
input.jsonResult of
Left _ -> []
Right artists -> artists
)
case allArtists of
[] -> do
addAttribute span "artists.count" (0 :: Int, intDecimalT)
pure ()
artists -> do
-- Deduplicate artists by ID, keeping the first name for each ID
let deduplicatedArtists =
artists
& Map.fromList -- Map.fromList keeps first occurrence for duplicate keys
& Map.toList
addAttribute span "artists.count" (List.length deduplicatedArtists, intDecimalT)
-- Insert deduplicated artists
execute
[sql|
INSERT INTO redacted.artists (artist_id, artist_name)
SELECT * FROM UNNEST(?::integer[], ?::text[])
ON CONFLICT (artist_id) DO UPDATE SET
artist_name = EXCLUDED.artist_name,
updated_at = NOW()
|]
( PGArray (deduplicatedArtists <&> fst),
PGArray (deduplicatedArtists <&> snd)
)
logInfo [fmt|Inserted/updated {List.length deduplicatedArtists} unique artists|]
-- | One-time migration to populate artists table from existing torrent/torrent_group data
populateExistingArtists :: AppTransaction (Label "artistsPopulated" Natural)
populateExistingArtists = inSpan' "Populate Existing Artists" $ \span -> do
logInfo "Starting migration to populate artists table from existing data..."
-- Direct insert with proper deduplication by artist_id
artistCount <-
execute
[sql|
INSERT INTO redacted.artists (artist_id, artist_name)
SELECT
artist_id,
MIN(artist_name) as artist_name -- Pick one name per artist_id
FROM (
SELECT DISTINCT
(artist_data->>'id')::integer as artist_id,
artist_data->>'name' as artist_name
FROM (
SELECT jsonb_array_elements(full_json_result->'artists') as artist_data
FROM redacted.torrent_groups
WHERE full_json_result ?? 'artists'
UNION ALL
SELECT jsonb_array_elements(full_json_result->'artists') as artist_data
FROM redacted.torrents_json
WHERE full_json_result ?? 'artists'
) expanded
WHERE artist_data ?? 'id' AND artist_data ?? 'name'
) all_artists
GROUP BY artist_id
ON CONFLICT (artist_id) DO UPDATE SET
artist_name = EXCLUDED.artist_name,
updated_at = NOW()
|]
()
addAttribute span "artists.populated" (artistCount.numberOfRowsAffected, naturalDecimalT)
logInfo [fmt|Successfully populated {artistCount.numberOfRowsAffected} artists in the artists table|]
pure $ label @"artistsPopulated" artistCount.numberOfRowsAffected
test :: App ()
test =
inSpan' "test" $ \span -> do
redactedApiRequestJson
span
(T2 (label @"action" "artist") (label @"actionArgs" [("id", Just "2785")]))
(Json.asValue)
<&> Pretty.showPrettyJsonColored
>>= liftIO . putStderrLn
readTorrentFile :: (MonadIO m, MonadPostgres m) => m ()
readTorrentFile = runTransaction $ do
torrentBytes <-
queryWith
[sql|
SELECT torrent_file from redacted.torrents where torrent_file is not null limit 10 |]
()
Dec.bytea
liftIO $ for_ torrentBytes $ \b -> case testBencode b of
Left e -> do
Text.IO.putStrLn $ prettyErrorTree e
Right a -> printPretty a
liftIO $ print $ lengthNatural torrentBytes
testBencode :: ByteString -> (Either ErrorTree TorrentFile)
testBencode bs = Parse.runParse "cannot parse bencode" (parseBencode >>> bencodeTorrentParser) bs
-- | A torrent file
--
-- from wikipedia:
--
-- * announce—the URL of the high tracker
-- * info—this maps to a dictionary whose keys are very dependent on whether one or more files are being shared:
-- - files—a list of dictionaries each corresponding to a file (only when multiple files are being shared). Each dictionary has the following keys:
-- * length—size of the file in bytes.
-- * path—a list of strings corresponding to subdirectory names, the last of which is the actual file name
-- - length—size of the file in bytes (only when one file is being shared though)
-- - name—suggested filename where the file is to be saved (if one file)/suggested directory name where the files are to be saved (if multiple files)
-- - piece length—number of bytes per piece. This is commonly 28 KiB = 256 KiB = 262,144 B.
-- - pieces—a hash list, i.e., a concatenation of each piece's SHA-1 hash. As SHA-1 returns a 160-bit hash, pieces will be a string whose length is a multiple of 20 bytes. If the torrent contains multiple files, the pieces are formed by concatenating the files in the order they appear in the files dictionary (i.e., all pieces in the torrent are the full piece length except for the last piece, which may be shorter).
data TorrentFile = TorrentFile
{ announce :: Text,
comment :: Maybe Text,
createdBy :: Maybe Text,
creationDate :: Maybe UTCTime,
encoding :: Maybe Text,
info :: Info
}
deriving stock (Eq, Show)
data Info = Info
{ name :: Text,
files :: [File],
pieceLength :: Natural,
pieces :: ByteString,
private :: Maybe Bool,
source :: Maybe Text
}
deriving stock (Eq, Show)
data File = File
{ length_ :: Natural,
path :: [Text]
}
deriving stock (Eq, Show)
bencodeTorrentParser :: Parse BEncode TorrentFile
bencodeTorrentParser =
bencodeDict >>> do
announce <- mapLookup "announce" bencodeTextLenient
comment <- mapLookupMay "comment" bencodeTextLenient
createdBy <- mapLookupMay "created by" bencodeTextLenient
creationDate <- mapLookupMay "creation date" (bencodeInteger <&> posixSecondsToUTCTime . fromInteger @NominalDiffTime)
encoding <- mapLookupMay "encoding" bencodeTextLenient
info <-
mapLookup "info" $
bencodeDict >>> do
name <- mapLookup "name" bencodeTextLenient
files <-
mapLookup "files" $
bencodeList
>>> ( Parse.multiple $
bencodeDict >>> do
length_ <- mapLookup "length" bencodeNatural
path <- mapLookup "path" $ bencodeList >>> Parse.multiple bencodeTextLenient
pure $ File {..}
)
pieceLength <- mapLookup "piece length" bencodeNatural
pieces <- mapLookup "pieces" bencodeBytes
private <-
mapLookupMay "private" bencodeInteger
<&> fmap
( \case
0 -> False
_ -> True
)
source <- mapLookupMay "source" bencodeTextLenient
pure Info {..}
pure TorrentFile {..}
getTorrentFilePath ::
( HasField "torrentId" dat Int,
HasField "fileId" dat Natural,
MonadOtel m,
MonadPostgres m
) =>
dat ->
Transaction m (Label "torrent" (Maybe FilePath))
getTorrentFilePath dat = inSpan' "getTorrentFilePath" $ \span -> do
mTorrent <- getTorrentFile dat
if
| Just torrent <- mTorrent -> do
addAttribute span "torrent.found" True
let mfile =
torrent.info.files
& atMay dat.fileId
<&> ( \f ->
(torrent.info.name & textToString)
</> (f.path <&> textToString & foldl' (</>) "")
)
addAttribute span "torrent.file" (toOtelJsonAttr (mfile <&> stringToText))
pure $ lbl #torrent mfile
| otherwise -> do
addAttribute span "torrent.found" False
pure $ lbl #torrent Nothing
getTorrentCoverArt ::
( HasField "torrentId" dat Int
) =>
dat ->
AppTransaction (Maybe (E2 "coverArtStatic" FilePath "coverArtBytes" (T2 "mimeType" Text "picture" ByteString)))
getTorrentCoverArt dat = inSpan' "getTorrentCoverArt" $ \span -> do
mTorrent <- getTorrentFile dat
mTransmissionDownloads <- lift getTransmissionDownloads
if
| Nothing <- mTransmissionDownloads -> do
addAttribute span "transmission.downloads.enabled" False
pure $ Nothing
| Just transmission <- mTransmissionDownloads,
Just torrent <- mTorrent -> do
addAttribute span "torrent.found" True
addAttribute span "torrent.name" torrent.info.name
let mkTorrentPath path =
(torrent.info.name & textToString)
</> (path <&> textToString & foldl' (</>) "")
let mCoverArt =
torrent.info.files
-- search for cover only on toplevel
& mapMaybe
( \f -> case f.path of
[fn] -> Just fn
_ -> Nothing
)
& findCoverArtInDirectory
<&> (mkTorrentPath . (: []))
-- if there’s no cover image file, try to extract the cover from the exif data of the first audio file
case mCoverArt of
Just coverArt -> do
addAttribute span "torrent.cover-type" ("directory-file" :: Text)
addAttribute span "torrent.cover" (coverArt & stringToText)
pure $ Just $ e21 #coverArtStatic coverArt
Nothing -> do
addAttribute span "torrent.cover-type" ("exif-metadata" :: Text)
let mfile = torrent.info.files & findAudioFileIds & headMay <&> snd
case mfile of
Nothing -> do
addAttribute span "torrent.cover" (toOtelJsonAttr (Nothing :: Maybe Text))
pure $ Nothing
Just file -> do
-- we read the file directly from the transmission downloads dir
-- instead of going through the static file server, to speed up exiftool.
lift (readExiftoolData (transmission.downloadDirectory </> mkTorrentPath file.path))
>>= \case
Left e -> do
recordError span e
pure $ Nothing
Right exiftoolData -> do
exiftoolData
& runParse
"Cannot parse exiftool cover"
( Json.parseJsonValue
( Json.nth 0 $ Json.asErrorTree $ do
mimeType <- Json.keyMay "PictureMIMEType" Json.asText
picture <- Json.keyMay "Picture" $ Json.asBase64 (lbl #prefix $ Just "base64:")
pure $ t2A #mimeType mimeType #picture picture
)
)
& \case
Left e -> do
recordErrorTree span e
pure $ Nothing
Right (Just coverArt) -> do
addAttribute span "exiftool.coverArt.mime-type" coverArt.mimeType
pure $ Just $ e22 #coverArtBytes coverArt
Right Nothing -> do
addAttribute span "exiftool.coverArt.found" False
pure $ Nothing
| otherwise -> do
addAttribute span "torrent.found" False
pure $ Nothing
findAudioFileIds :: [File] -> [(Natural, File)]
findAudioFileIds files = do
let extensionList :: [Text] = [".flac", ".mp3", ".opus", ".ogg", ".m4a", ".aac", ".wma", ".wav", ".aiff", ".ape", ".alac", ".mka", ".tta", ".wv", ".pcm", ".dsd", ".dff", ".dsf", ".mpc", ".mpa", ".mp2", ".mp1", ".m4b", ".m4p"]
files
& zip [0 ..]
& mapMaybe
( \(idx, f) -> do
last' <- textToString <$> lastMay f.path
let ext = Text.toLower $ stringToText $ File.takeExtension last'
guard $ ext `elem` extensionList
pure (idx, f)
)
-- | Read the output of exiftool for the given file.
readExiftoolData :: FilePath -> App (Either Error Json.Value)
readExiftoolData filePath = inSpan' "run exiftool" $ \span -> do
exiftool <- getTools <&> (.exiftool)
let args = ["-json", "-all", "-binary", filePath]
addAttribute span "exiftool.cmd" $
exiftool.toolPath : args & map stringToText & prettyArgsForBash
withRunInIO $ \_runInIO -> do
readProcessStdout (proc exiftool.toolPath args)
& ifIOError "Cannot run exiftool"
<&> ( \ei ->
ei >>= \(_ex, stdout) ->
Json.eitherDecode' stdout
& first (\e -> [fmt|Cannot decode exiftool stdout as json: {e}|])
)
getTorrentFile ::
( MonadPostgres m,
HasField "torrentId" dat Int
) =>
dat ->
(Transaction m (Maybe TorrentFile))
getTorrentFile dat = do
queryFirstRowWithMaybe
[fmt|
SELECT torrent_file FROM redacted.torrents
WHERE torrent_file IS NOT NULL
AND torrent_id = ?::int
|]
( Only $ (dat.torrentId :: Int)
)
( Dec.parse @(Postgres.Binary ByteString)
(lmap (Postgres.fromBinary) parseBencode >>> bencodeTorrentParser)
)
-- | Try to find something that looks like cover art in the given list of file names.
findCoverArtInDirectory :: [Text] -> Maybe Text
findCoverArtInDirectory fileNames = do
let coverArts = mapMaybe (\f -> (f,) <$> (isCoverArt f)) fileNames
-- filter by priority, take the cover art with lowest priority
coverArts & List.sortOn snd & headMay <&> fst
where
isCoverArt :: Text -> Maybe Natural
isCoverArt t = case Text.toLower t of
"cover.jpg" -> Just 1
"cover.jpeg" -> Just 1
"cover.png" -> Just 1
"folder.jpg" -> Just 1
"folder.jpeg" -> Just 1
"folder.png" -> Just 1
-- now we check for subset and prefer “front” over “back”
other ->
if
| Text.isInfixOf "cover" other,
Text.isInfixOf "front" other ->
Just 2
| Text.isInfixOf "cover" other -> Just 3
-- anything that is png or jpg
| Text.isSuffixOf ".jpg" other -> Just 4
| Text.isSuffixOf ".jpeg" other -> Just 4
| Text.isSuffixOf ".png" other -> Just 4
| otherwise -> Nothing
|