"""
Alembic environment configuration
Автор: Сергей Антропов
Сайт: https://devops.org.ru
"""

from logging.config import fileConfig
from sqlalchemy import engine_from_config
from sqlalchemy import pool
from alembic import context
import os
import sys

# Добавляем путь к приложению
app_dir = os.path.dirname(os.path.dirname(__file__))
sys.path.insert(0, app_dir)
# Также добавляем родительскую директорию для правильных импортов
parent_dir = os.path.dirname(app_dir)
if parent_dir not in sys.path:
    sys.path.insert(0, parent_dir)

# 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)

# Устанавливаем URL базы данных из переменных окружения или настроек
db_url = os.getenv("DATABASE_URL", "postgresql://devopslab:devopslab123@postgres:5432/devopslab")
if db_url.startswith("postgresql+asyncpg://"):
    db_url = db_url.replace("postgresql+asyncpg://", "postgresql://")
config.set_main_option("sqlalchemy.url", db_url)

# Импортируем модели для autogenerate
try:
    from app.models.user import Base as UserBase
    from app.models.database import Base as DatabaseBase
    
    # Объединяем метаданные
    target_metadata = UserBase.metadata
    # Добавляем таблицы из database.py
    for table_name, table in DatabaseBase.metadata.tables.items():
        if table_name not in target_metadata.tables:
            target_metadata._add_table(table_name, table.schema, table)
except ImportError:
    # Если не удалось импортировать, используем только UserBase
    try:
        from app.models.user import Base
        target_metadata = Base.metadata
    except ImportError:
        # Если и это не работает, создаем пустые метаданные
        from sqlalchemy import MetaData
        target_metadata = MetaData()


def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    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.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    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()