File size: 46,645 Bytes
22a3c56
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
"""Database storage layer"""
import aiosqlite
import json
from datetime import datetime
from typing import Optional, List
from pathlib import Path
from .models import Token, TokenStats, Task, RequestLog, AdminConfig, ProxyConfig, WatermarkFreeConfig, CacheConfig, GenerationConfig, TokenRefreshConfig

class Database:
    """SQLite database manager"""

    def __init__(self, db_path: str = None):
        if db_path is None:
            # Store database in data directory
            data_dir = Path(__file__).parent.parent.parent / "data"
            data_dir.mkdir(exist_ok=True)
            db_path = str(data_dir / "hancat.db")
        self.db_path = db_path

    def db_exists(self) -> bool:
        """Check if database file exists"""
        return Path(self.db_path).exists()

    async def _table_exists(self, db, table_name: str) -> bool:
        """Check if a table exists in the database"""
        cursor = await db.execute(
            "SELECT name FROM sqlite_master WHERE type='table' AND name=?",
            (table_name,)
        )
        result = await cursor.fetchone()
        return result is not None

    async def _column_exists(self, db, table_name: str, column_name: str) -> bool:
        """Check if a column exists in a table"""
        try:
            cursor = await db.execute(f"PRAGMA table_info({table_name})")
            columns = await cursor.fetchall()
            return any(col[1] == column_name for col in columns)
        except:
            return False

    async def _ensure_config_rows(self, db, config_dict: dict = None):
        """Ensure all config tables have their default rows

        Args:
            db: Database connection
            config_dict: Configuration dictionary from setting.toml (optional)
        """
        # Ensure admin_config has a row
        cursor = await db.execute("SELECT COUNT(*) FROM admin_config")
        count = await cursor.fetchone()
        if count[0] == 0:
            # Get admin credentials from config_dict if provided, otherwise use defaults
            admin_username = "admin"
            admin_password = "admin"
            error_ban_threshold = 3

            if config_dict:
                global_config = config_dict.get("global", {})
                admin_username = global_config.get("admin_username", "admin")
                admin_password = global_config.get("admin_password", "admin")

                admin_config = config_dict.get("admin", {})
                error_ban_threshold = admin_config.get("error_ban_threshold", 3)

            await db.execute("""
                INSERT INTO admin_config (id, admin_username, admin_password, error_ban_threshold)
                VALUES (1, ?, ?, ?)
            """, (admin_username, admin_password, error_ban_threshold))

        # Ensure proxy_config has a row
        cursor = await db.execute("SELECT COUNT(*) FROM proxy_config")
        count = await cursor.fetchone()
        if count[0] == 0:
            # Get proxy config from config_dict if provided, otherwise use defaults
            proxy_enabled = False
            proxy_url = None

            if config_dict:
                proxy_config = config_dict.get("proxy", {})
                proxy_enabled = proxy_config.get("proxy_enabled", False)
                proxy_url = proxy_config.get("proxy_url", "")
                # Convert empty string to None
                proxy_url = proxy_url if proxy_url else None

            await db.execute("""
                INSERT INTO proxy_config (id, proxy_enabled, proxy_url)
                VALUES (1, ?, ?)
            """, (proxy_enabled, proxy_url))

        # Ensure watermark_free_config has a row
        cursor = await db.execute("SELECT COUNT(*) FROM watermark_free_config")
        count = await cursor.fetchone()
        if count[0] == 0:
            # Get watermark-free config from config_dict if provided, otherwise use defaults
            watermark_free_enabled = False
            parse_method = "third_party"
            custom_parse_url = None
            custom_parse_token = None

            if config_dict:
                watermark_config = config_dict.get("watermark_free", {})
                watermark_free_enabled = watermark_config.get("watermark_free_enabled", False)
                parse_method = watermark_config.get("parse_method", "third_party")
                custom_parse_url = watermark_config.get("custom_parse_url", "")
                custom_parse_token = watermark_config.get("custom_parse_token", "")

                # Convert empty strings to None
                custom_parse_url = custom_parse_url if custom_parse_url else None
                custom_parse_token = custom_parse_token if custom_parse_token else None

            await db.execute("""
                INSERT INTO watermark_free_config (id, watermark_free_enabled, parse_method, custom_parse_url, custom_parse_token)
                VALUES (1, ?, ?, ?, ?)
            """, (watermark_free_enabled, parse_method, custom_parse_url, custom_parse_token))

        # Ensure cache_config has a row
        cursor = await db.execute("SELECT COUNT(*) FROM cache_config")
        count = await cursor.fetchone()
        if count[0] == 0:
            # Get cache config from config_dict if provided, otherwise use defaults
            cache_enabled = False
            cache_timeout = 600
            cache_base_url = None

            if config_dict:
                cache_config = config_dict.get("cache", {})
                cache_enabled = cache_config.get("enabled", False)
                cache_timeout = cache_config.get("timeout", 600)
                cache_base_url = cache_config.get("base_url", "")
                # Convert empty string to None
                cache_base_url = cache_base_url if cache_base_url else None

            await db.execute("""
                INSERT INTO cache_config (id, cache_enabled, cache_timeout, cache_base_url)
                VALUES (1, ?, ?, ?)
            """, (cache_enabled, cache_timeout, cache_base_url))

        # Ensure generation_config has a row
        cursor = await db.execute("SELECT COUNT(*) FROM generation_config")
        count = await cursor.fetchone()
        if count[0] == 0:
            # Get generation config from config_dict if provided, otherwise use defaults
            image_timeout = 300
            video_timeout = 1500

            if config_dict:
                generation_config = config_dict.get("generation", {})
                image_timeout = generation_config.get("image_timeout", 300)
                video_timeout = generation_config.get("video_timeout", 1500)

            await db.execute("""
                INSERT INTO generation_config (id, image_timeout, video_timeout)
                VALUES (1, ?, ?)
            """, (image_timeout, video_timeout))

        # Ensure token_refresh_config has a row
        cursor = await db.execute("SELECT COUNT(*) FROM token_refresh_config")
        count = await cursor.fetchone()
        if count[0] == 0:
            # Get token refresh config from config_dict if provided, otherwise use defaults
            at_auto_refresh_enabled = False

            if config_dict:
                token_refresh_config = config_dict.get("token_refresh", {})
                at_auto_refresh_enabled = token_refresh_config.get("at_auto_refresh_enabled", False)

            await db.execute("""
                INSERT INTO token_refresh_config (id, at_auto_refresh_enabled)
                VALUES (1, ?)
            """, (at_auto_refresh_enabled,))


    async def check_and_migrate_db(self, config_dict: dict = None):
        """Check database integrity and perform migrations if needed

        Args:
            config_dict: Configuration dictionary from setting.toml (optional)
                        Used to initialize new tables with values from setting.toml
        """
        async with aiosqlite.connect(self.db_path) as db:
            print("Checking database integrity and performing migrations...")

            # Check and add missing columns to tokens table
            if await self._table_exists(db, "tokens"):
                columns_to_add = [
                    ("sora2_supported", "BOOLEAN"),
                    ("sora2_invite_code", "TEXT"),
                    ("sora2_redeemed_count", "INTEGER DEFAULT 0"),
                    ("sora2_total_count", "INTEGER DEFAULT 0"),
                    ("sora2_remaining_count", "INTEGER DEFAULT 0"),
                    ("sora2_cooldown_until", "TIMESTAMP"),
                    ("image_enabled", "BOOLEAN DEFAULT 1"),
                    ("video_enabled", "BOOLEAN DEFAULT 1"),
                ]

                for col_name, col_type in columns_to_add:
                    if not await self._column_exists(db, "tokens", col_name):
                        try:
                            await db.execute(f"ALTER TABLE tokens ADD COLUMN {col_name} {col_type}")
                            print(f"  ✓ Added column '{col_name}' to tokens table")
                        except Exception as e:
                            print(f"  ✗ Failed to add column '{col_name}': {e}")

            # Check and add missing columns to admin_config table
            if await self._table_exists(db, "admin_config"):
                columns_to_add = [
                    ("admin_username", "TEXT DEFAULT 'admin'"),
                    ("admin_password", "TEXT DEFAULT 'admin'"),
                ]

                for col_name, col_type in columns_to_add:
                    if not await self._column_exists(db, "admin_config", col_name):
                        try:
                            await db.execute(f"ALTER TABLE admin_config ADD COLUMN {col_name} {col_type}")
                            print(f"  ✓ Added column '{col_name}' to admin_config table")
                        except Exception as e:
                            print(f"  ✗ Failed to add column '{col_name}': {e}")

            # Check and add missing columns to watermark_free_config table
            if await self._table_exists(db, "watermark_free_config"):
                columns_to_add = [
                    ("parse_method", "TEXT DEFAULT 'third_party'"),
                    ("custom_parse_url", "TEXT"),
                    ("custom_parse_token", "TEXT"),
                ]

                for col_name, col_type in columns_to_add:
                    if not await self._column_exists(db, "watermark_free_config", col_name):
                        try:
                            await db.execute(f"ALTER TABLE watermark_free_config ADD COLUMN {col_name} {col_type}")
                            print(f"  ✓ Added column '{col_name}' to watermark_free_config table")
                        except Exception as e:
                            print(f"  ✗ Failed to add column '{col_name}': {e}")

            # Ensure all config tables have their default rows
            # Pass config_dict if available to initialize from setting.toml
            await self._ensure_config_rows(db, config_dict)

            await db.commit()
            print("Database migration check completed.")

    async def init_db(self):
        """Initialize database tables - creates all tables and ensures data integrity"""
        async with aiosqlite.connect(self.db_path) as db:
            # Tokens table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS tokens (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    token TEXT UNIQUE NOT NULL,
                    email TEXT NOT NULL,
                    username TEXT NOT NULL,
                    name TEXT NOT NULL,
                    st TEXT,
                    rt TEXT,
                    remark TEXT,
                    expiry_time TIMESTAMP,
                    is_active BOOLEAN DEFAULT 1,
                    cooled_until TIMESTAMP,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    last_used_at TIMESTAMP,
                    use_count INTEGER DEFAULT 0,
                    plan_type TEXT,
                    plan_title TEXT,
                    subscription_end TIMESTAMP,
                    sora2_supported BOOLEAN,
                    sora2_invite_code TEXT,
                    sora2_redeemed_count INTEGER DEFAULT 0,
                    sora2_total_count INTEGER DEFAULT 0,
                    sora2_remaining_count INTEGER DEFAULT 0,
                    sora2_cooldown_until TIMESTAMP,
                    image_enabled BOOLEAN DEFAULT 1,
                    video_enabled BOOLEAN DEFAULT 1
                )
            """)

            # Token stats table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS token_stats (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    token_id INTEGER NOT NULL,
                    image_count INTEGER DEFAULT 0,
                    video_count INTEGER DEFAULT 0,
                    error_count INTEGER DEFAULT 0,
                    last_error_at TIMESTAMP,
                    FOREIGN KEY (token_id) REFERENCES tokens(id)
                )
            """)

            # Tasks table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS tasks (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    task_id TEXT UNIQUE NOT NULL,
                    token_id INTEGER NOT NULL,
                    model TEXT NOT NULL,
                    prompt TEXT NOT NULL,
                    status TEXT NOT NULL DEFAULT 'processing',
                    progress FLOAT DEFAULT 0,
                    result_urls TEXT,
                    error_message TEXT,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    completed_at TIMESTAMP,
                    FOREIGN KEY (token_id) REFERENCES tokens(id)
                )
            """)

            # Request logs table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS request_logs (
                    id INTEGER PRIMARY KEY AUTOINCREMENT,
                    token_id INTEGER,
                    operation TEXT NOT NULL,
                    request_body TEXT,
                    response_body TEXT,
                    status_code INTEGER NOT NULL,
                    duration FLOAT NOT NULL,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    FOREIGN KEY (token_id) REFERENCES tokens(id)
                )
            """)

            # Admin config table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS admin_config (
                    id INTEGER PRIMARY KEY DEFAULT 1,
                    admin_username TEXT DEFAULT 'admin',
                    admin_password TEXT DEFAULT 'admin',
                    error_ban_threshold INTEGER DEFAULT 3,
                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
                )
            """)

            # Proxy config table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS proxy_config (
                    id INTEGER PRIMARY KEY DEFAULT 1,
                    proxy_enabled BOOLEAN DEFAULT 0,
                    proxy_url TEXT,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
                )
            """)

            # Watermark-free config table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS watermark_free_config (
                    id INTEGER PRIMARY KEY DEFAULT 1,
                    watermark_free_enabled BOOLEAN DEFAULT 0,
                    parse_method TEXT DEFAULT 'third_party',
                    custom_parse_url TEXT,
                    custom_parse_token TEXT,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
                )
            """)

            # Cache config table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS cache_config (
                    id INTEGER PRIMARY KEY DEFAULT 1,
                    cache_enabled BOOLEAN DEFAULT 0,
                    cache_timeout INTEGER DEFAULT 600,
                    cache_base_url TEXT,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
                )
            """)

            # Generation config table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS generation_config (
                    id INTEGER PRIMARY KEY DEFAULT 1,
                    image_timeout INTEGER DEFAULT 300,
                    video_timeout INTEGER DEFAULT 1500,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
                )
            """)

            # Token refresh config table
            await db.execute("""
                CREATE TABLE IF NOT EXISTS token_refresh_config (
                    id INTEGER PRIMARY KEY DEFAULT 1,
                    at_auto_refresh_enabled BOOLEAN DEFAULT 0,
                    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
                )
            """)

            # Create indexes
            await db.execute("CREATE INDEX IF NOT EXISTS idx_task_id ON tasks(task_id)")
            await db.execute("CREATE INDEX IF NOT EXISTS idx_task_status ON tasks(status)")
            await db.execute("CREATE INDEX IF NOT EXISTS idx_token_active ON tokens(is_active)")

            await db.commit()

    async def init_config_from_toml(self, config_dict: dict, is_first_startup: bool = True):
        """
        Initialize database configuration from setting.toml

        Args:
            config_dict: Configuration dictionary from setting.toml
            is_first_startup: If True, only update if row doesn't exist. If False, always update.
        """
        async with aiosqlite.connect(self.db_path) as db:
            # On first startup, ensure all config rows exist with values from setting.toml
            if is_first_startup:
                await self._ensure_config_rows(db, config_dict)

            # Initialize admin config
            admin_config = config_dict.get("admin", {})
            error_ban_threshold = admin_config.get("error_ban_threshold", 3)

            # Get admin credentials from global config
            global_config = config_dict.get("global", {})
            admin_username = global_config.get("admin_username", "admin")
            admin_password = global_config.get("admin_password", "admin")

            if not is_first_startup:
                # On upgrade, update the configuration
                await db.execute("""
                    UPDATE admin_config
                    SET admin_username = ?, admin_password = ?, error_ban_threshold = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (admin_username, admin_password, error_ban_threshold))

            # Initialize proxy config
            proxy_config = config_dict.get("proxy", {})
            proxy_enabled = proxy_config.get("proxy_enabled", False)
            proxy_url = proxy_config.get("proxy_url", "")
            # Convert empty string to None
            proxy_url = proxy_url if proxy_url else None

            if is_first_startup:
                await db.execute("""
                    INSERT OR IGNORE INTO proxy_config (id, proxy_enabled, proxy_url)
                    VALUES (1, ?, ?)
                """, (proxy_enabled, proxy_url))
            else:
                await db.execute("""
                    UPDATE proxy_config
                    SET proxy_enabled = ?, proxy_url = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (proxy_enabled, proxy_url))

            # Initialize watermark-free config
            watermark_config = config_dict.get("watermark_free", {})
            watermark_free_enabled = watermark_config.get("watermark_free_enabled", False)
            parse_method = watermark_config.get("parse_method", "third_party")
            custom_parse_url = watermark_config.get("custom_parse_url", "")
            custom_parse_token = watermark_config.get("custom_parse_token", "")

            # Convert empty strings to None
            custom_parse_url = custom_parse_url if custom_parse_url else None
            custom_parse_token = custom_parse_token if custom_parse_token else None

            if is_first_startup:
                await db.execute("""
                    INSERT OR IGNORE INTO watermark_free_config (id, watermark_free_enabled, parse_method, custom_parse_url, custom_parse_token)
                    VALUES (1, ?, ?, ?, ?)
                """, (watermark_free_enabled, parse_method, custom_parse_url, custom_parse_token))
            else:
                await db.execute("""
                    UPDATE watermark_free_config
                    SET watermark_free_enabled = ?, parse_method = ?, custom_parse_url = ?,
                        custom_parse_token = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (watermark_free_enabled, parse_method, custom_parse_url, custom_parse_token))

            # Initialize cache config
            cache_config = config_dict.get("cache", {})
            cache_enabled = cache_config.get("enabled", False)
            cache_timeout = cache_config.get("timeout", 600)
            cache_base_url = cache_config.get("base_url", "")
            # Convert empty string to None
            cache_base_url = cache_base_url if cache_base_url else None

            if is_first_startup:
                await db.execute("""
                    INSERT OR IGNORE INTO cache_config (id, cache_enabled, cache_timeout, cache_base_url)
                    VALUES (1, ?, ?, ?)
                """, (cache_enabled, cache_timeout, cache_base_url))
            else:
                await db.execute("""
                    UPDATE cache_config
                    SET cache_enabled = ?, cache_timeout = ?, cache_base_url = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (cache_enabled, cache_timeout, cache_base_url))

            # Initialize generation config
            generation_config = config_dict.get("generation", {})
            image_timeout = generation_config.get("image_timeout", 300)
            video_timeout = generation_config.get("video_timeout", 1500)

            if is_first_startup:
                await db.execute("""
                    INSERT OR IGNORE INTO generation_config (id, image_timeout, video_timeout)
                    VALUES (1, ?, ?)
                """, (image_timeout, video_timeout))
            else:
                await db.execute("""
                    UPDATE generation_config
                    SET image_timeout = ?, video_timeout = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (image_timeout, video_timeout))

            # Initialize token refresh config
            token_refresh_config = config_dict.get("token_refresh", {})
            at_auto_refresh_enabled = token_refresh_config.get("at_auto_refresh_enabled", False)

            if is_first_startup:
                await db.execute("""
                    INSERT OR IGNORE INTO token_refresh_config (id, at_auto_refresh_enabled)
                    VALUES (1, ?)
                """, (at_auto_refresh_enabled,))
            else:
                await db.execute("""
                    UPDATE token_refresh_config
                    SET at_auto_refresh_enabled = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (at_auto_refresh_enabled,))

            await db.commit()

    # Token operations
    async def add_token(self, token: Token) -> int:
        """Add a new token"""
        async with aiosqlite.connect(self.db_path) as db:
            cursor = await db.execute("""
                INSERT INTO tokens (token, email, username, name, st, rt, remark, expiry_time, is_active,
                                   plan_type, plan_title, subscription_end, sora2_supported, sora2_invite_code,
                                   sora2_redeemed_count, sora2_total_count, sora2_remaining_count, sora2_cooldown_until,
                                   image_enabled, video_enabled)
                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
            """, (token.token, token.email, "", token.name, token.st, token.rt,
                  token.remark, token.expiry_time, token.is_active,
                  token.plan_type, token.plan_title, token.subscription_end,
                  token.sora2_supported, token.sora2_invite_code,
                  token.sora2_redeemed_count, token.sora2_total_count,
                  token.sora2_remaining_count, token.sora2_cooldown_until,
                  token.image_enabled, token.video_enabled))
            await db.commit()
            token_id = cursor.lastrowid

            # Create stats entry
            await db.execute("""
                INSERT INTO token_stats (token_id) VALUES (?)
            """, (token_id,))
            await db.commit()

            return token_id
    
    async def get_token(self, token_id: int) -> Optional[Token]:
        """Get token by ID"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM tokens WHERE id = ?", (token_id,))
            row = await cursor.fetchone()
            if row:
                return Token(**dict(row))
            return None
    
    async def get_token_by_value(self, token: str) -> Optional[Token]:
        """Get token by value"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM tokens WHERE token = ?", (token,))
            row = await cursor.fetchone()
            if row:
                return Token(**dict(row))
            return None
    
    async def get_active_tokens(self) -> List[Token]:
        """Get all active tokens (enabled, not cooled down, not expired)"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("""
                SELECT * FROM tokens
                WHERE is_active = 1
                AND (cooled_until IS NULL OR cooled_until < CURRENT_TIMESTAMP)
                AND expiry_time > CURRENT_TIMESTAMP
                ORDER BY last_used_at ASC NULLS FIRST
            """)
            rows = await cursor.fetchall()
            return [Token(**dict(row)) for row in rows]
    
    async def get_all_tokens(self) -> List[Token]:
        """Get all tokens"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM tokens ORDER BY created_at DESC")
            rows = await cursor.fetchall()
            return [Token(**dict(row)) for row in rows]
    
    async def update_token_usage(self, token_id: int):
        """Update token usage"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE tokens 
                SET last_used_at = CURRENT_TIMESTAMP, use_count = use_count + 1
                WHERE id = ?
            """, (token_id,))
            await db.commit()
    
    async def update_token_status(self, token_id: int, is_active: bool):
        """Update token status"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE tokens SET is_active = ? WHERE id = ?
            """, (is_active, token_id))
            await db.commit()
    
    async def update_token_sora2(self, token_id: int, supported: bool, invite_code: Optional[str] = None,
                                redeemed_count: int = 0, total_count: int = 0, remaining_count: int = 0):
        """Update token Sora2 support info"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE tokens
                SET sora2_supported = ?, sora2_invite_code = ?, sora2_redeemed_count = ?, sora2_total_count = ?, sora2_remaining_count = ?
                WHERE id = ?
            """, (supported, invite_code, redeemed_count, total_count, remaining_count, token_id))
            await db.commit()

    async def update_token_sora2_remaining(self, token_id: int, remaining_count: int):
        """Update token Sora2 remaining count"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE tokens SET sora2_remaining_count = ? WHERE id = ?
            """, (remaining_count, token_id))
            await db.commit()

    async def update_token_sora2_cooldown(self, token_id: int, cooldown_until: Optional[datetime]):
        """Update token Sora2 cooldown time"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE tokens SET sora2_cooldown_until = ? WHERE id = ?
            """, (cooldown_until, token_id))
            await db.commit()

    async def update_token_cooldown(self, token_id: int, cooled_until: datetime):
        """Update token cooldown"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE tokens SET cooled_until = ? WHERE id = ?
            """, (cooled_until, token_id))
            await db.commit()
    
    async def delete_token(self, token_id: int):
        """Delete token"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("DELETE FROM token_stats WHERE token_id = ?", (token_id,))
            await db.execute("DELETE FROM tokens WHERE id = ?", (token_id,))
            await db.commit()

    async def update_token(self, token_id: int,
                          token: Optional[str] = None,
                          st: Optional[str] = None,
                          rt: Optional[str] = None,
                          remark: Optional[str] = None,
                          expiry_time: Optional[datetime] = None,
                          plan_type: Optional[str] = None,
                          plan_title: Optional[str] = None,
                          subscription_end: Optional[datetime] = None,
                          image_enabled: Optional[bool] = None,
                          video_enabled: Optional[bool] = None):
        """Update token (AT, ST, RT, remark, expiry_time, subscription info, image_enabled, video_enabled)"""
        async with aiosqlite.connect(self.db_path) as db:
            # Build dynamic update query
            updates = []
            params = []

            if token is not None:
                updates.append("token = ?")
                params.append(token)

            if st is not None:
                updates.append("st = ?")
                params.append(st)

            if rt is not None:
                updates.append("rt = ?")
                params.append(rt)

            if remark is not None:
                updates.append("remark = ?")
                params.append(remark)

            if expiry_time is not None:
                updates.append("expiry_time = ?")
                params.append(expiry_time)

            if plan_type is not None:
                updates.append("plan_type = ?")
                params.append(plan_type)

            if plan_title is not None:
                updates.append("plan_title = ?")
                params.append(plan_title)

            if subscription_end is not None:
                updates.append("subscription_end = ?")
                params.append(subscription_end)

            if image_enabled is not None:
                updates.append("image_enabled = ?")
                params.append(image_enabled)

            if video_enabled is not None:
                updates.append("video_enabled = ?")
                params.append(video_enabled)

            if updates:
                params.append(token_id)
                query = f"UPDATE tokens SET {', '.join(updates)} WHERE id = ?"
                await db.execute(query, params)
                await db.commit()

    # Token stats operations
    async def get_token_stats(self, token_id: int) -> Optional[TokenStats]:
        """Get token statistics"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM token_stats WHERE token_id = ?", (token_id,))
            row = await cursor.fetchone()
            if row:
                return TokenStats(**dict(row))
            return None
    
    async def increment_image_count(self, token_id: int):
        """Increment image generation count"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE token_stats SET image_count = image_count + 1 WHERE token_id = ?
            """, (token_id,))
            await db.commit()
    
    async def increment_video_count(self, token_id: int):
        """Increment video generation count"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE token_stats SET video_count = video_count + 1 WHERE token_id = ?
            """, (token_id,))
            await db.commit()
    
    async def increment_error_count(self, token_id: int):
        """Increment error count"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE token_stats 
                SET error_count = error_count + 1, last_error_at = CURRENT_TIMESTAMP
                WHERE token_id = ?
            """, (token_id,))
            await db.commit()
    
    async def reset_error_count(self, token_id: int):
        """Reset error count"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE token_stats SET error_count = 0 WHERE token_id = ?
            """, (token_id,))
            await db.commit()
    
    # Task operations
    async def create_task(self, task: Task) -> int:
        """Create a new task"""
        async with aiosqlite.connect(self.db_path) as db:
            cursor = await db.execute("""
                INSERT INTO tasks (task_id, token_id, model, prompt, status, progress)
                VALUES (?, ?, ?, ?, ?, ?)
            """, (task.task_id, task.token_id, task.model, task.prompt, task.status, task.progress))
            await db.commit()
            return cursor.lastrowid
    
    async def update_task(self, task_id: str, status: str, progress: float, 
                         result_urls: Optional[str] = None, error_message: Optional[str] = None):
        """Update task status"""
        async with aiosqlite.connect(self.db_path) as db:
            completed_at = datetime.now() if status in ["completed", "failed"] else None
            await db.execute("""
                UPDATE tasks 
                SET status = ?, progress = ?, result_urls = ?, error_message = ?, completed_at = ?
                WHERE task_id = ?
            """, (status, progress, result_urls, error_message, completed_at, task_id))
            await db.commit()
    
    async def get_task(self, task_id: str) -> Optional[Task]:
        """Get task by ID"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM tasks WHERE task_id = ?", (task_id,))
            row = await cursor.fetchone()
            if row:
                return Task(**dict(row))
            return None
    
    # Request log operations
    async def log_request(self, log: RequestLog):
        """Log a request"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                INSERT INTO request_logs (token_id, operation, request_body, response_body, status_code, duration)
                VALUES (?, ?, ?, ?, ?, ?)
            """, (log.token_id, log.operation, log.request_body, log.response_body, 
                  log.status_code, log.duration))
            await db.commit()
    
    async def get_recent_logs(self, limit: int = 100) -> List[dict]:
        """Get recent logs with token email"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("""
                SELECT
                    rl.id,
                    rl.token_id,
                    rl.operation,
                    rl.request_body,
                    rl.response_body,
                    rl.status_code,
                    rl.duration,
                    rl.created_at,
                    t.email as token_email
                FROM request_logs rl
                LEFT JOIN tokens t ON rl.token_id = t.id
                ORDER BY rl.created_at DESC
                LIMIT ?
            """, (limit,))
            rows = await cursor.fetchall()
            return [dict(row) for row in rows]
    
    # Admin config operations
    async def get_admin_config(self) -> AdminConfig:
        """Get admin configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM admin_config WHERE id = 1")
            row = await cursor.fetchone()
            if row:
                return AdminConfig(**dict(row))
            # If no row exists, return a default config with placeholder values
            # This should not happen in normal operation as _ensure_config_rows should create it
            return AdminConfig(admin_username="admin", admin_password="admin")
    
    async def update_admin_config(self, config: AdminConfig):
        """Update admin configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE admin_config
                SET admin_username = ?, admin_password = ?, error_ban_threshold = ?, updated_at = CURRENT_TIMESTAMP
                WHERE id = 1
            """, (config.admin_username, config.admin_password, config.error_ban_threshold))
            await db.commit()
    
    # Proxy config operations
    async def get_proxy_config(self) -> ProxyConfig:
        """Get proxy configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM proxy_config WHERE id = 1")
            row = await cursor.fetchone()
            if row:
                return ProxyConfig(**dict(row))
            # If no row exists, return a default config
            # This should not happen in normal operation as _ensure_config_rows should create it
            return ProxyConfig(proxy_enabled=False)
    
    async def update_proxy_config(self, enabled: bool, proxy_url: Optional[str]):
        """Update proxy configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE proxy_config
                SET proxy_enabled = ?, proxy_url = ?, updated_at = CURRENT_TIMESTAMP
                WHERE id = 1
            """, (enabled, proxy_url))
            await db.commit()

    # Watermark-free config operations
    async def get_watermark_free_config(self) -> WatermarkFreeConfig:
        """Get watermark-free configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM watermark_free_config WHERE id = 1")
            row = await cursor.fetchone()
            if row:
                return WatermarkFreeConfig(**dict(row))
            # If no row exists, return a default config
            # This should not happen in normal operation as _ensure_config_rows should create it
            return WatermarkFreeConfig(watermark_free_enabled=False, parse_method="third_party")

    async def update_watermark_free_config(self, enabled: bool, parse_method: str = None,
                                          custom_parse_url: str = None, custom_parse_token: str = None):
        """Update watermark-free configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            if parse_method is None and custom_parse_url is None and custom_parse_token is None:
                # Only update enabled status
                await db.execute("""
                    UPDATE watermark_free_config
                    SET watermark_free_enabled = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (enabled,))
            else:
                # Update all fields
                await db.execute("""
                    UPDATE watermark_free_config
                    SET watermark_free_enabled = ?, parse_method = ?, custom_parse_url = ?,
                        custom_parse_token = ?, updated_at = CURRENT_TIMESTAMP
                    WHERE id = 1
                """, (enabled, parse_method or "third_party", custom_parse_url, custom_parse_token))
            await db.commit()

    # Cache config operations
    async def get_cache_config(self) -> CacheConfig:
        """Get cache configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM cache_config WHERE id = 1")
            row = await cursor.fetchone()
            if row:
                return CacheConfig(**dict(row))
            # If no row exists, return a default config
            # This should not happen in normal operation as _ensure_config_rows should create it
            return CacheConfig(cache_enabled=False, cache_timeout=600)

    async def update_cache_config(self, enabled: bool = None, timeout: int = None, base_url: Optional[str] = None):
        """Update cache configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            # Get current config first
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM cache_config WHERE id = 1")
            row = await cursor.fetchone()

            if row:
                current = dict(row)
                # Update only provided fields
                new_enabled = enabled if enabled is not None else current.get("cache_enabled", False)
                new_timeout = timeout if timeout is not None else current.get("cache_timeout", 600)
                new_base_url = base_url if base_url is not None else current.get("cache_base_url")
            else:
                new_enabled = enabled if enabled is not None else False
                new_timeout = timeout if timeout is not None else 600
                new_base_url = base_url

            # Convert empty string to None
            new_base_url = new_base_url if new_base_url else None

            await db.execute("""
                UPDATE cache_config
                SET cache_enabled = ?, cache_timeout = ?, cache_base_url = ?, updated_at = CURRENT_TIMESTAMP
                WHERE id = 1
            """, (new_enabled, new_timeout, new_base_url))
            await db.commit()

    # Generation config operations
    async def get_generation_config(self) -> GenerationConfig:
        """Get generation configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM generation_config WHERE id = 1")
            row = await cursor.fetchone()
            if row:
                return GenerationConfig(**dict(row))
            # If no row exists, return a default config
            # This should not happen in normal operation as _ensure_config_rows should create it
            return GenerationConfig(image_timeout=300, video_timeout=1500)

    async def update_generation_config(self, image_timeout: int = None, video_timeout: int = None):
        """Update generation configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            # Get current config first
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM generation_config WHERE id = 1")
            row = await cursor.fetchone()

            if row:
                current = dict(row)
                # Update only provided fields
                new_image_timeout = image_timeout if image_timeout is not None else current.get("image_timeout", 300)
                new_video_timeout = video_timeout if video_timeout is not None else current.get("video_timeout", 1500)
            else:
                new_image_timeout = image_timeout if image_timeout is not None else 300
                new_video_timeout = video_timeout if video_timeout is not None else 1500

            await db.execute("""
                UPDATE generation_config
                SET image_timeout = ?, video_timeout = ?, updated_at = CURRENT_TIMESTAMP
                WHERE id = 1
            """, (new_image_timeout, new_video_timeout))
            await db.commit()

    # Token refresh config operations
    async def get_token_refresh_config(self) -> TokenRefreshConfig:
        """Get token refresh configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            db.row_factory = aiosqlite.Row
            cursor = await db.execute("SELECT * FROM token_refresh_config WHERE id = 1")
            row = await cursor.fetchone()
            if row:
                return TokenRefreshConfig(**dict(row))
            # If no row exists, return a default config
            # This should not happen in normal operation as _ensure_config_rows should create it
            return TokenRefreshConfig(at_auto_refresh_enabled=False)

    async def update_token_refresh_config(self, at_auto_refresh_enabled: bool):
        """Update token refresh configuration"""
        async with aiosqlite.connect(self.db_path) as db:
            await db.execute("""
                UPDATE token_refresh_config
                SET at_auto_refresh_enabled = ?, updated_at = CURRENT_TIMESTAMP
                WHERE id = 1
            """, (at_auto_refresh_enabled,))
            await db.commit()