"""Alembic environment.

Reads the runtime database URL from ``app.db`` (which resolves the
password from the secrets file), so ``alembic upgrade head`` Just
Works inside the API container with no extra env wiring.
"""

from __future__ import annotations

from logging.config import fileConfig

from alembic import context

from app.db import Base, engine
from app import models  # noqa: F401 — imported for side-effect of registering models

config = context.config

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

target_metadata = Base.metadata


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


def run_migrations_online() -> None:
    with engine.connect() as connection:
        context.configure(connection=connection, target_metadata=target_metadata)
        with context.begin_transaction():
            context.run_migrations()


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