"""Alembic environment configuration.

Imports all SQLModel models so autogenerate detects schema changes.
"""

from logging.config import fileConfig

from alembic import context
from sqlalchemy import engine_from_config, pool
from sqlmodel import SQLModel

# Import all models so SQLModel.metadata knows about them
from app.models import (  # noqa: F401
    User, Exercise, Warmup, WorkoutDay,
    UserExerciseProgram, WorkoutSession, WorkoutLog, ProgressLog,
)

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

target_metadata = SQLModel.metadata


def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode (SQL script generation)."""
    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 (direct DB connection)."""
    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()