"""
WSP CLI runner.

Usage:
  python -m wsp.runner status
  python -m wsp.runner incremental [op_name|all]
  python -m wsp.runner backfill <op_name> --from YYYY-MM-DD --to YYYY-MM-DD [--workers 3]
  python -m wsp.runner test
"""
from __future__ import annotations

import argparse
import logging
import sys
from datetime import datetime, timedelta

from . import db, sync
from .operations import ALL_OPS, PUBLIC_OPS, OWN_OPS

logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s %(levelname)s [%(name)s] %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S',
)
log = logging.getLogger('wsp.runner')


def cmd_status(args):
    with db.connection() as conn:
        cur = conn.cursor()
        cur.execute("""
            SELECT feed, last_run_at, last_cursor_date,
                   items_imported_total, items_imported_24h,
                   consecutive_errors, last_error
            FROM seap.wsp_sync_state ORDER BY feed
        """)
        rows = cur.fetchall()
        print(f'\n{"Feed":<25} {"Last run":<22} {"Cursor":<22} {"Total":>10} {"Errors"}')
        print('-' * 100)
        for r in rows:
            feed, last_run, cursor, total, _, errs, err_msg = r
            err_str = err_msg[:40] + '...' if err_msg and len(err_msg) > 40 else (err_msg or '')
            print(f'{feed:<25} {str(last_run)[:19]:<22} {str(cursor)[:19]:<22} '
                  f'{total or 0:>10,} {errs}/{err_str}')

        cur.execute("""
            SELECT feed, state, count(*) FROM seap.wsp_backfill_windows
            GROUP BY feed, state ORDER BY feed, state
        """)
        rows = cur.fetchall()
        if rows:
            print(f'\n{"Backfill queue":<30}')
            print('-' * 60)
            for feed, state, count in rows:
                print(f'  {feed:<25} {state:<15} {count:>8}')

        cur.execute("""
            SELECT source, count(*) FROM seap.announcements
            WHERE source LIKE 'wsp_%' GROUP BY source ORDER BY source
        """)
        rows = cur.fetchall()
        if rows:
            print(f'\n{"Source":<25} {"Rows in seap.announcements"}')
            print('-' * 60)
            for source, count in rows:
                print(f'  {source:<25} {count:>10,}')


def cmd_incremental(args):
    target_ops = args.ops if args.ops != ['all'] else list(ALL_OPS)
    for op_name in target_ops:
        if op_name not in ALL_OPS:
            log.error('Unknown op: %s', op_name)
            continue
        log.info('=== Running incremental: %s ===', op_name)
        result = sync.run_incremental(op_name, lookback_hours=args.lookback_hours)
        log.info('Result: %s', result)


def cmd_backfill(args):
    if args.op not in ALL_OPS:
        log.error('Unknown op: %s. Available: %s', args.op, list(ALL_OPS))
        sys.exit(1)
    start = datetime.fromisoformat(args.start)
    end = datetime.fromisoformat(args.end)
    log.info('=== Backfill %s [%s, %s) workers=%d ===',
             args.op, start, end, args.workers)
    result = sync.run_backfill(args.op, start, end, workers=args.workers)
    log.info('Done: %s', result)


def cmd_test(args):
    """Run a 1-day end-to-end test on yesterday (all SU_* feeds)."""
    yesterday = datetime.now().date() - timedelta(days=1)
    start = datetime.combine(yesterday, datetime.min.time())
    end = datetime.combine(yesterday, datetime.max.time())

    feeds_to_test = ['SU_CaNotices', 'SU_CNotices', 'SU_PiNotices',
                     'SU_RfqNotices', 'SU_RfqInvitations',
                     'SU_DCNotices', 'SU_PCNotices', 'SU_RdcNotices', 'SU_ENotices']
    log.info('=== Smoke test on %s ===', yesterday)
    for op_name in feeds_to_test:
        log.info('--- %s ---', op_name)
        try:
            r = sync.run_backfill(op_name, start, end, workers=1, enqueue=True)
            log.info('  → %d items imported', r['items_imported'])
        except Exception as e:
            log.exception('  → ERROR: %s', e)


def main():
    parser = argparse.ArgumentParser(prog='wsp.runner')
    sub = parser.add_subparsers(dest='cmd', required=True)

    sub.add_parser('status')

    p_inc = sub.add_parser('incremental')
    p_inc.add_argument('ops', nargs='*', default=['all'],
                       help='Operations to sync (default: all)')
    p_inc.add_argument('--lookback-hours', type=int, default=36)

    p_bf = sub.add_parser('backfill')
    p_bf.add_argument('op')
    p_bf.add_argument('--start', required=True, help='YYYY-MM-DD or full ISO')
    p_bf.add_argument('--end', required=True)
    p_bf.add_argument('--workers', type=int, default=3)

    sub.add_parser('test')

    args = parser.parse_args()

    handlers = {
        'status': cmd_status,
        'incremental': cmd_incremental,
        'backfill': cmd_backfill,
        'test': cmd_test,
    }
    handlers[args.cmd](args)


if __name__ == '__main__':
    main()