from logging.config import fileConfig

from alembic import context
from sqlalchemy import create_engine
from sqlalchemy.pool import NullPool
from sqlmodel import SQLModel

from sqlmodel.sql.sqltypes import AutoString

from app.core.config import get_settings

# Import all models so they register with SQLModel.metadata
import app.models  # noqa: F401

config = context.config
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

target_metadata = SQLModel.metadata


def get_url() -> str:
    return get_settings().sqlalchemy_database_uri


def render_item(type_, obj, autogen_context):
    if type_ == "type" and isinstance(obj, AutoString):
        length = getattr(obj, "length", None)
        return f"AutoString(length={length})" if length else "AutoString()"
    return False


def run_migrations_offline() -> None:
    url = get_url()
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
        render_item=render_item,
    )
    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    connectable = create_engine(get_url(), poolclass=NullPool)
    with connectable.connect() as connection:
        context.configure(connection=connection, target_metadata=target_metadata, render_item=render_item)
        with context.begin_transaction():
            context.run_migrations()


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