"""Alembic env.py — wires Alembic up to the SQLModel metadata and the
project's SQLite URL so ``alembic upgrade head`` and ``alembic revision
--autogenerate`` work out of the box.
"""

from logging.config import fileConfig

from sqlalchemy import engine_from_config, pool
from alembic import context

# Import the DB module so its SQLModel table classes register in metadata.
from agenteval.storage.db import DATABASE_URL  # noqa: F401
from agenteval.storage.db import (  # noqa: F401
    CampaignDB,
    EvalResultDB,
    EvalRunDB,
    EvalTargetDB,
    FileCategoryDB,
    FileRecordDB,
    ModelConfigDB,
    ScenarioDB,
    ScenarioModelBindingDB,
    TurnDB,
)
from sqlmodel import SQLModel

config = context.config

# Point Alembic at the same SQLite file the app uses.
config.set_main_option("sqlalchemy.url", DATABASE_URL)

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

target_metadata = SQLModel.metadata


def run_migrations_offline() -> None:
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
        render_as_batch=True,  # Required for SQLite ALTER TABLE support.
    )

    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    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,
            render_as_batch=True,  # Required for SQLite ALTER TABLE support.
        )

        with context.begin_transaction():
            context.run_migrations()


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