"""Import SANEF Serveurs physiques + Hyperviseurs CSV -> table servers (machine_type=physical).

Usage:
    python tools/import_sanef_physical.py <csv_path> [--hypervisor]

Le script auto-détecte le type via la colonne 'Sous-classe de CI'.
Marque les hyperviseurs avec is_hypervisor (via patch_owner_details si pas de colonne dédiée).
Skip les hostnames déjà présents (évite doublons avec les VMs).
"""
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 norm_os_family(famille):
    f = (famille or "").strip().lower()
    if "windows" in f:
        return "windows"
    if "linux" in f or "oracle" in f or "esxi" in f:
        return "linux"
    return None


ITOP_ETATS = {"Production", "Implémentation", "Stock", "Obsolète", "prêt", "tests"}


def norm_etat(status, etat):
    """Retourne la valeur iTop verbatim si reconnue, sinon None (pas de fallback silencieux)."""
    raw = (etat or "").strip()
    if not raw or raw == "-":
        return None
    return raw if raw in ITOP_ETATS else None


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("csv_path")
    args = parser.parse_args()

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

    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")

    inserted = 0
    skipped = 0
    duplicates = 0

    for r in rows:
        hostname = (r.get("Nom") or r.get("Hostname") or "").strip()
        if not hostname or hostname in ("(null)",) or hostname.startswith(("...", "#")):
            skipped += 1
            continue
        # Ignore les lignes parasites (chiffres seuls, etc.)
        if not any(c.isalpha() for c in hostname):
            skipped += 1
            continue

        # Skip si hostname déjà présent (déjà importé comme VM)
        existing = conn.execute(text("SELECT id FROM servers WHERE hostname=:h"),
                                {"h": hostname}).fetchone()
        if existing:
            duplicates += 1
            continue

        sous_classe = (r.get("Sous-classe de CI") or "").strip()
        is_hypervisor = "Hyperviseur" in sous_classe or "Serveur" in r.get("Sous-classe de CI", "") and "vir" in hostname.lower()

        os_family = norm_os_family(r.get("Famille OS->Nom"))
        os_version = (r.get("Version OS->Nom") or "").strip()[:200] or None
        ip = (r.get("IP") or "").strip() or None
        domain = (r.get("Domaine") or "").strip()[:50] or None
        site = (r.get("Lieu->Nom") or "").strip()[:50] or None
        etat = norm_etat(r.get("Status"), r.get("Etat"))
        responsable = (r.get("Logiciel->Responsable Domaine DTS") or "").strip() or None

        marque = (r.get("Marque->Nom") or "").strip()
        modele = (r.get("Modèle->Nom") or r.get("Mod\u00e8le->Nom") or "").strip()
        underlying = (r.get("Serveur->Nom") or "").strip()
        cluster = (r.get("vCluster->Nom") or "").strip()
        desc = (r.get("Description") or "").strip()
        fonction = (r.get("Fonction") or "").strip()

        details_parts = []
        if is_hypervisor:
            details_parts.append("[HYPERVISEUR]")
        if marque or modele:
            details_parts.append(f"{marque} {modele}".strip())
        if underlying:
            details_parts.append(f"Serveur: {underlying}")
        if cluster:
            details_parts.append(f"Cluster: {cluster}")
        if desc:
            details_parts.append(desc)
        if fonction:
            details_parts.append(fonction)
        details = " | ".join(details_parts)[:2000] or None

        fqdn = None
        if domain and "." in domain and domain.lower() not in ("workgroup", "host"):
            fqdn = f"{hostname}.{domain}"[:255]

        try:
            conn.execute(text("""
                INSERT INTO servers
                (hostname, fqdn, domain_ltd, os_family, os_version, machine_type,
                 etat, site, responsable_nom, patch_owner_details)
                VALUES
                (:hostname, :fqdn, :domain_ltd, :os_family, :os_version, 'physical',
                 :etat, :site, :responsable_nom, :patch_owner_details)
            """), {
                "hostname": hostname, "fqdn": fqdn, "domain_ltd": domain,
                "os_family": os_family, "os_version": os_version,
                "etat": etat, "site": site, "responsable_nom": responsable,
                "patch_owner_details": details,
            })
            inserted += 1
            if ip:
                sid = conn.execute(text("SELECT id FROM servers WHERE hostname=:h"),
                                   {"h": hostname}).fetchone()
                if sid:
                    try:
                        conn.execute(text("""
                            INSERT INTO server_ips (server_id, ip_address, is_primary)
                            VALUES (:sid, :ip, true)
                        """), {"sid": sid.id, "ip": ip})
                    except Exception:
                        pass
        except Exception as e:
            print(f"  [ERR] {hostname}: {str(e)[:150]}")
            skipped += 1

    conn.close()
    print(f"[DONE] Inseres: {inserted} | Doublons (deja en base): {duplicates} | Ignores: {skipped}")


if __name__ == "__main__":
    main()