from __future__ import annotations

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

from alembic import context
from sqlalchemy import engine_from_config, pool


config = context.config
REPO_ROOT = Path(__file__).resolve().parents[2]
if str(REPO_ROOT) not in sys.path:
    sys.path.insert(0, str(REPO_ROOT))

from dotenv import load_dotenv
load_dotenv(REPO_ROOT / ".env", override=True)

database_url = (
    os.getenv("AKS_DATABASE_URL")
    or os.getenv("DATABASE_URL")
    or config.get_main_option("sqlalchemy.url")
)
config.set_main_option("sqlalchemy.url", database_url.replace("%", "%%"))

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

target_metadata = None


def run_migrations_offline() -> None:
    url = config.get_main_option("sqlalchemy.url")
    context.configure(url=url, 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)

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


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