from __future__ import annotations

from logging.config import fileConfig
from typing import Iterable

from alembic import context
from sqlalchemy import engine_from_config, pool

from config.database import Base, DATABASE_URL
from models import *  # noqa: F401,F403 - ensure models are imported for metadata registration

# this is the Alembic Config object, which provides access to the values within the .ini file.
config = context.config

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

# Interpret the config file for Python logging.
# This line sets up loggers basically.
config.set_main_option("sqlalchemy.url", DATABASE_URL)

target_metadata = Base.metadata


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

    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."""

    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()


def run_migrations() -> None:
    if context.is_offline_mode():
        run_migrations_offline()
    else:
        run_migrations_online()


run_migrations()
