"""
Alembic environment for database migrations.
"""

from logging.config import fileConfig

from sqlalchemy import engine_from_config
from sqlalchemy import pool

from alembic import context

# Import models for autogenerate support
from app.models.models import Base

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

# Interpret the config file for Python logging.
# This line sets up loggers basically.
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

# Add our app's path for imports
import sys
import os
sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))

# Use sync SQLite driver for Alembic migrations
# Override the sqlalchemy.url from config with our actual sync URL
config.set_main_option("sqlalchemy.url", "sqlite:///./triptalley.db")

# add your model's MetaData object here
# for 'autogenerate' support
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"},
        render_as_batch=True,  # Enable batch mode for SQLite support
    )

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


def run_migrations_online() -> None:
    """Run migrations in 'online' mode."""
    # Use sync engine for migrations (Alembic doesn't support async natively)
    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,
            render_as_batch=True,  # Enable batch mode for SQLite support
        )

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


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