# =============================================================================
# QWHPI — Quebec Weekly Housing Price Index
# Author  : Simon-Pierre Boucher
# Contact : contact@spboucher.ai
# File    : db/migrations/env.py
# Purpose : Alembic environment — runs SQL migrations against DATABASE_URL.
# =============================================================================
"""Alembic migration environment (offline + online modes)."""

from __future__ import annotations

import os

from alembic import context
from sqlalchemy import create_engine

url = os.environ.get("DATABASE_URL", "postgresql://qwhpi:qwhpi@localhost:5432/qwhpi")


def run_migrations_offline() -> None:
    context.configure(url=url, literal_binds=True)
    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    engine = create_engine(url)
    with engine.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()