"""Alembic environment.

The database URL and the metadata come from the application itself, so a
migration can never drift from the models the app actually uses.
"""

from __future__ import annotations

from logging.config import fileConfig

from sqlalchemy import engine_from_config, pool

# Importing the ORM module registers every table on Base.metadata.
import app.infrastructure.db.models  # noqa: F401,E402
from alembic import context
from app.core.config import settings
from app.core.database import Base

config = context.config

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

target_metadata = Base.metadata


def _sync_url() -> str:
    """Alembic runs synchronously; strip the async driver from the URL."""
    url = settings.database_url
    return (
        url.replace("+aiosqlite", "")
        .replace("+asyncpg", "+psycopg")
        .replace("+psycopg_async", "+psycopg")
    )


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


def run_migrations_online() -> None:
    section = config.get_section(config.config_ini_section) or {}
    section["sqlalchemy.url"] = _sync_url()
    connectable = engine_from_config(
        section, prefix="sqlalchemy.", poolclass=pool.NullPool
    )
    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata, compare_type=True
        )
        with context.begin_transaction():
            context.run_migrations()


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