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

from alembic import context
from dotenv import load_dotenv
from sqlalchemy import engine_from_config, pool

PROJECT_ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(PROJECT_ROOT / "src"))
load_dotenv(PROJECT_ROOT / ".env")

from database.models import Base

config = context.config
if database_url := os.getenv("DATABASE_URL"):
    config.set_main_option("sqlalchemy.url", database_url)
if config.config_file_name:
    fileConfig(config.config_file_name)
target_metadata = Base.metadata


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


def run_migrations_online() -> None:
    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()