"""Alembic environment for explicitly approved sidecar targets."""

from __future__ import annotations

from logging.config import fileConfig

from alembic import context
from sqlalchemy import engine_from_config, pool

from osm_lead_source_service.sidecar.migration_config import load_migration_settings

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


def run_migrations_offline() -> None:
    settings = load_migration_settings()
    context.configure(
        url=settings.database_url,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
        version_table_schema="public",
    )
    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    settings = load_migration_settings()
    configuration = config.get_section(config.config_ini_section, {})
    configuration["sqlalchemy.url"] = settings.database_url
    connectable = engine_from_config(
        configuration,
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
        future=True,
    )
    with connectable.connect() as connection:
        context.configure(connection=connection, version_table_schema="public")
        with context.begin_transaction():
            context.run_migrations()


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