# alembic/env.py
from logging.config import fileConfig
from alembic import context
from sqlalchemy import engine_from_config, pool
import os
import sys

# --- que Python encuentre tu paquete del proyecto ---
BASE_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
if BASE_DIR not in sys.path:
    sys.path.insert(0, BASE_DIR)

# Config estándar de Alembic
config = context.config
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

# 👉 importa Base (y modelos ya quedaron cargados por base.py)
try:
    from apps.wp_invoices.db.base import Base  # base.py ya importa models
    target_metadata = Base.metadata
except Exception as e:
    target_metadata = None  # evita crash, pero no habrá autogenerate

# Si usas sqlalchemy.url en alembic.ini, no necesitas más. Si la tomas del entorno,
# puedes hacer:
# from config.db import engine as app_engine
# y usar app_engine en run_migrations_online()

def run_migrations_offline():
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
        compare_type=True,
        compare_server_default=True,
    )
    with context.begin_transaction():
        context.run_migrations()

def run_migrations_online():
    connectable = engine_from_config(
        config.get_section(config.config_ini_section),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )
    with connectable.connect() as connection:
        context.configure(
            connection=connection,
            target_metadata=target_metadata,
            compare_type=True,
            compare_server_default=True,
        )
        with context.begin_transaction():
            context.run_migrations()

if context.is_offline_mode():
    run_migrations_offline()
else:
    run_migrations_online()