"""Alembic environment configuration"""

from logging.config import fileConfig
import os
from sqlalchemy import engine_from_config
from sqlalchemy import pool
from alembic import context
from app.core.config import get_settings
from app.db.database import Base

# Get settings
settings = get_settings()

# this is the Alembic Config object
config = context.config

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

# Set sqlalchemy.url from environment
config.set_main_option("sqlalchemy.url", settings.database_url)

# Add models
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."""
    configuration = config.get_section(config.config_ini_section)
    configuration["sqlalchemy.url"] = settings.database_url
    connectable = engine_from_config(
        configuration,
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection,
            target_metadata=target_metadata,
            compare_type=True,
            compare_server_default=True,
        )

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


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