"""Import SANEF contacts CSV (iTop Contact export) -> table contacts.

Usage:
    python tools/import_sanef_contacts.py <csv_path> [--replace]
"""
import csv
import os
import argparse
from sqlalchemy import create_engine, text

DATABASE_URL = os.getenv("DATABASE_URL_DEMO") or os.getenv("DATABASE_URL") \
    or "postgresql://patchcenter:PatchCenter2026!@localhost:5432/patchcenter_demo"


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("csv_path")
    parser.add_argument("--replace", action="store_true",
                        help="Vider la table contacts avant import (uniquement les itop_id non-null)")
    args = parser.parse_args()

    engine = create_engine(DATABASE_URL)
    print(f"[INFO] DB: {DATABASE_URL.split('@')[-1]}")

    with open(args.csv_path, "r", encoding="utf-8-sig", newline="") as f:
        reader = csv.DictReader(f)
        rows = list(reader)
    print(f"[INFO] {len(rows)} lignes")

    conn = engine.connect().execution_options(isolation_level="AUTOCOMMIT")

    if args.replace:
        n = conn.execute(text("DELETE FROM contacts WHERE itop_id IS NOT NULL")).rowcount
        print(f"[OK] {n} contacts iTop supprimes")

    inserted = 0
    updated = 0
    skipped = 0

    for r in rows:
        name = (r.get("Nom") or "").strip()
        email = (r.get("Email") or "").strip().lower()
        state = (r.get("Etat") or "").strip().lower()
        phone = (r.get("Telephone fixe") or r.get("Téléphone fixe") or "").strip() or None
        team = (r.get("Organisation->Nom organisation") or "").strip()[:100] or None
        function = (r.get("Fonction") or "").strip()[:200] or None
        itop_id = (r.get("id (Clef primaire)") or "").strip()

        if not name:
            skipped += 1
            continue

        # email required - generate placeholder if missing
        if not email:
            slug = name.lower().replace(" ", "-").replace("'", "").replace(".", "")[:50]
            email = f"{slug}@no-email.sanef.local"

        is_active = state in ("actif", "active")
        itop_id_int = int(itop_id) if itop_id.isdigit() else None

        try:
            existing = conn.execute(text(
                "SELECT id FROM contacts WHERE email=:e OR itop_id=:iid"
            ), {"e": email, "iid": itop_id_int}).fetchone()

            if existing:
                conn.execute(text("""
                    UPDATE contacts SET
                        name=:name, is_active=:active, telephone=:phone,
                        team=:team, function=:function, itop_id=:iid,
                        updated_at=now()
                    WHERE id=:id
                """), {"name": name, "active": is_active, "phone": phone,
                       "team": team, "function": function, "iid": itop_id_int,
                       "id": existing.id})
                updated += 1
            else:
                conn.execute(text("""
                    INSERT INTO contacts (name, email, role, is_active, telephone, team, function, itop_id)
                    VALUES (:name, :email, 'autre', :active, :phone, :team, :function, :iid)
                """), {"name": name, "email": email, "active": is_active,
                       "phone": phone, "team": team, "function": function,
                       "iid": itop_id_int})
                inserted += 1
        except Exception as e:
            print(f"  [ERR] {name} ({email}): {str(e)[:150]}")
            skipped += 1

    conn.close()
    print(f"[DONE] Crees: {inserted} | Mis a jour: {updated} | Ignores: {skipped}")


if __name__ == "__main__":
    main()