"""Pipeline: registra la operations.db de una app en Metabase.

Compone: metabase_auth + metabase_list_databases + metabase_add_database.

Requiere que el contenedor Metabase tenga montado el directorio de la app
como volumen RW para que SQLite pueda crear journal files.

Uso:
    python metabase_add_ops_db.py <app_name>
    python metabase_add_ops_db.py docker_tui
    python metabase_add_ops_db.py --list
"""

import argparse
import os
import sys

sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))

from metabase.client import metabase_auth
from metabase import metabase_list_databases, metabase_add_database

METABASE_URL = os.environ.get("METABASE_URL", "http://localhost:3000")
EMAIL = os.environ.get("METABASE_ADMIN_EMAIL", "admin@fnregistry.local")
PASSWORD = os.environ.get("METABASE_ADMIN_PASSWORD", "FnRegistry2024!")

CONTAINER_DATA_PREFIX = "/data/ops-"


def find_apps(registry_root: str) -> list[str]:
    """Lista apps que tienen operations.db."""
    apps_dir = os.path.join(registry_root, "apps")
    if not os.path.isdir(apps_dir):
        return []
    return sorted(
        d
        for d in os.listdir(apps_dir)
        if os.path.isfile(os.path.join(apps_dir, d, "operations.db"))
    )


def db_name_for_app(app_name: str) -> str:
    return f"ops-{app_name.replace('_', '-')}"


def container_path_for_app(app_name: str) -> str:
    return f"{CONTAINER_DATA_PREFIX}{app_name.replace('_', '-')}/operations.db"


def main():
    parser = argparse.ArgumentParser(description="Registra operations.db de una app en Metabase")
    parser.add_argument("app_name", nargs="?", help="Nombre de la app (directorio en apps/)")
    parser.add_argument("--list", action="store_true", help="Lista apps disponibles y su estado en Metabase")
    args = parser.parse_args()

    registry_root = os.environ.get(
        "FN_REGISTRY_ROOT",
        os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", "..")),
    )

    if args.list:
        client = metabase_auth(METABASE_URL, EMAIL, PASSWORD)
        dbs = metabase_list_databases(client)
        db_names = {d["name"] for d in dbs}
        apps = find_apps(registry_root)
        print(f"Apps con operations.db ({len(apps)}):\n")
        for app in apps:
            name = db_name_for_app(app)
            status = "registrada" if name in db_names else "NO registrada"
            print(f"  {app:30s} -> {name:30s} [{status}]")
        client.close()
        return

    if not args.app_name:
        parser.error("Se requiere app_name o --list")

    app_name = args.app_name
    ops_path = os.path.join(registry_root, "apps", app_name, "operations.db")
    if not os.path.isfile(ops_path):
        print(f"ERROR: No existe {ops_path}")
        print(f"Apps disponibles: {', '.join(find_apps(registry_root))}")
        sys.exit(1)

    name = db_name_for_app(app_name)
    container_path = container_path_for_app(app_name)

    print(f"Registrando {app_name} en Metabase...")
    print(f"  Nombre:    {name}")
    print(f"  Path:      {container_path}")

    client = metabase_auth(METABASE_URL, EMAIL, PASSWORD)

    # Verificar si ya existe
    dbs = metabase_list_databases(client)
    for db in dbs:
        if db["name"] == name:
            print(f"  Ya existe con id={db['id']}, nada que hacer.")
            client.close()
            return

    # Registrar
    result = metabase_add_database(client, name, "sqlite", {"db": container_path})
    db_id = result["id"]
    print(f"  Registrada con id={db_id}")

    # Recordar: el contenedor necesita el volumen montado
    print(f"\nIMPORTANTE: El contenedor Metabase debe tener montado:")
    print(f"  -v {os.path.join(registry_root, 'apps', app_name)}:{CONTAINER_DATA_PREFIX}{app_name.replace('_', '-')}")
    print(f"\nSi el mount no existe, hay que recrear el contenedor.")
    print(f"\nDatabase disponible en: {METABASE_URL}/question#new?database={db_id}")

    client.close()


if __name__ == "__main__":
    main()