"""Alembic migration environment."""

import sys
from logging.config import fileConfig
from pathlib import Path

from alembic import context
from sqlalchemy import engine_from_config, pool

# Add the parent directory to sys.path to ensure packages can be imported
app_dir = Path(__file__).resolve().parent.parent
if str(app_dir) not in sys.path:
    sys.path.insert(0, str(app_dir))

from packages.core.common.settings import get_settings  # noqa: E402
from packages.core.storage.models import Base  # noqa: E402

# Load Alembic config
config = context.config

# Interpret the config file for Python logging
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

# Set target metadata for autogenerate
target_metadata = Base.metadata

# Get database URL from settings
settings = get_settings()
config.set_main_option("sqlalchemy.url", settings.database.url)


def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode.

    This configures the context with just a URL and not an Engine,
    though an Engine is acceptable here as well. By skipping the Engine
    creation we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the script output.
    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

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


def run_migrations_online() -> None:
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine and associate a connection
    with the context.
    """
    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)

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


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