"""
clear_bookings.py
─────────────────
Wipes all booking data from the DB so the app looks like
bookings never happened. AIDA stops chasing paid-out stays,
review reminders, and invoice cards.

What gets cleared
─────────────────
  bookings            → entire collection deleted
  aida_sessions       → pending_review, review_card_sent,
                        review_request_sent flags unset
  messages (optional) → booking_invoice / booking_widget
                        card messages removed from chat threads
                        (pass --wipe-booking-messages to enable)

What is NOT touched
───────────────────
  users, listings, conversations, reviews, notifications,
  viewings, alerts — everything else stays intact.

Usage
─────
  # From project root (AIDA/):
  python scripts/clear_bookings.py

  # Also wipe booking invoice/widget messages from chat:
  python scripts/clear_bookings.py --wipe-booking-messages

  # Dry run — see counts without deleting anything:
  python scripts/clear_bookings.py --dry-run
"""

import sys
import os
from pathlib import Path

# ── Allow running from any directory ──────────────────────────
ROOT = Path(__file__).resolve().parent.parent          # …/AIDA/
sys.path.insert(0, str(ROOT))

from dotenv import load_dotenv
load_dotenv(ROOT / ".env")

import pymongo

MONGODB_URL      = os.getenv("MONGODB_URL")
MONGODB_DATABASE = os.getenv("MONGODB_DATABASE", "lojiz")

if not MONGODB_URL:
    print("❌  MONGODB_URL not found in .env — aborting.")
    sys.exit(1)

# ── CLI flags ─────────────────────────────────────────────────
DRY_RUN              = "--dry-run"             in sys.argv
WIPE_BOOKING_MESSAGES = "--wipe-booking-messages" in sys.argv

# ─────────────────────────────────────────────────────────────
def hr(): print("─" * 52)

def main():
    client = pymongo.MongoClient(MONGODB_URL, serverSelectionTimeoutMS=8000)
    db     = client[MONGODB_DATABASE]

    print()
    hr()
    print("  🗑   BOOKING CLEAR SCRIPT")
    if DRY_RUN:
        print("  ⚠️   DRY RUN — nothing will be deleted")
    hr()
    print(f"  DB  : {MONGODB_DATABASE}")
    print()

    # ── 1. bookings ──────────────────────────────────────────
    booking_count = db["bookings"].count_documents({})
    print(f"  bookings            : {booking_count} document(s) found")
    if not DRY_RUN and booking_count:
        result = db["bookings"].delete_many({})
        print(f"  ✅  deleted {result.deleted_count} booking(s)")
    elif DRY_RUN:
        print(f"  ↳  would delete {booking_count}")

    # ── 2. aida_sessions — clear booking flags ────────────────
    session_count = db["aida_sessions"].count_documents({
        "$or": [
            {"pending_review":       {"$exists": True}},
            {"review_card_sent":     {"$exists": True}},
            {"review_request_sent":  {"$exists": True}},
        ]
    })
    print(f"\n  aida_sessions (flags): {session_count} session(s) with booking flags")
    if not DRY_RUN and session_count:
        result = db["aida_sessions"].update_many(
            {},
            {"$unset": {
                "pending_review":      "",
                "review_card_sent":    "",
                "review_request_sent": "",
            }},
        )
        print(f"  ✅  cleared flags on {result.modified_count} session(s)")
    elif DRY_RUN:
        print(f"  ↳  would clear flags on {session_count} session(s)")

    # ── 3. messages — booking cards (optional) ────────────────
    if WIPE_BOOKING_MESSAGES:
        msg_count = db["messages"].count_documents({
            "$or": [
                {"metadata.booking_invoice": {"$exists": True}},
                {"metadata.booking_widget":  {"$exists": True}},
            ]
        })
        print(f"\n  messages (booking)   : {msg_count} booking card message(s) found")
        if not DRY_RUN and msg_count:
            result = db["messages"].delete_many({
                "$or": [
                    {"metadata.booking_invoice": {"$exists": True}},
                    {"metadata.booking_widget":  {"$exists": True}},
                ]
            })
            print(f"  ✅  deleted {result.deleted_count} booking message(s)")
        elif DRY_RUN:
            print(f"  ↳  would delete {msg_count} booking message(s)")
    else:
        print(f"\n  messages            : skipped (pass --wipe-booking-messages to also clear invoice cards from chat)")

    # ── done ─────────────────────────────────────────────────
    print()
    hr()
    if DRY_RUN:
        print("  DRY RUN complete — run without --dry-run to apply.")
    else:
        print("  ✅  Done. DB looks like bookings never happened.")
    hr()
    print()

    client.close()


if __name__ == "__main__":
    main()