"""One-time: renumber duplicate orden_ids. Keep oldest row (lowest id) with original,
rename later rows to MAX+1, MAX+2, ... Does NOT touch uploads/ folders — files stay
attached to the original (lowest id) pedido, which is the desired behavior."""
import sqlite3, sys

DB = 'art4hotel.db'
c = sqlite3.connect(DB)
c.row_factory = sqlite3.Row

dups = [r['orden_id'] for r in c.execute(
    "SELECT orden_id FROM ordenes WHERE orden_id GLOB 'ORD-2026-[0-9][0-9][0-9]' "
    "GROUP BY orden_id HAVING COUNT(*)>1")]
print(f'Duplicados encontrados: {len(dups)}')

max_num = c.execute(
    "SELECT MAX(CAST(SUBSTR(orden_id,10,3) AS INTEGER)) FROM ordenes "
    "WHERE orden_id GLOB 'ORD-2026-[0-9][0-9][0-9]'").fetchone()[0] or 0
next_num = max_num + 1

renames = []
for oid in dups:
    rows = c.execute("SELECT id, cliente, producto FROM ordenes WHERE orden_id=? ORDER BY id", (oid,)).fetchall()
    keep = rows[0]
    print(f"\n  {oid}  KEEP id={keep['id']} ({keep['cliente']} - {keep['producto']})")
    for r in rows[1:]:
        new_oid = f'ORD-2026-{next_num:03d}'
        next_num += 1
        print(f"      id={r['id']} ({r['cliente']} - {r['producto']})  →  {new_oid}")
        renames.append((new_oid, r['id']))

if '--apply' in sys.argv:
    for new_oid, rid in renames:
        c.execute("UPDATE ordenes SET orden_id=? WHERE id=?", (new_oid, rid))
    c.commit()
    print(f'\nAplicado: {len(renames)} renombrados.')
else:
    print(f'\n(dry-run — corre con --apply para aplicar {len(renames)} cambios)')