"""
Alembic environment configuration.
"""

from logging.config import fileConfig

from sqlalchemy import engine_from_config
from sqlalchemy import pool

from alembic import context

from memory.common import settings
from memory.common.db.models import Base

# Import all models to ensure they're registered with Base.metadata
from memory.common.db.models import (
    SourceItem,
    Chunk,
    MailMessage,
    EmailAttachment,
    ChatMessage,
    BlogPost,
    Comic,
    BookSection,
    ForumPost,
    GithubItem,
    GitCommit,
    Photo,
    MiscDoc,
    AgentObservation,
    ObservationContradiction,
    ReactionPattern,
    ObservationPattern,
    BeliefCluster,
    ConversationMetrics,
    Book,
    ArticleFeed,
    EmailAccount,
)


# this is the Alembic Config object
config = context.config

# setup database URL from environment variables
config.set_main_option("sqlalchemy.url", settings.DB_URL)

# Interpret the config file for Python logging
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

# add your model's MetaData object here
target_metadata = Base.metadata

# other values from the config, defined by the needs of env.py,
# can be acquired:
# my_important_option = config.get_main_option("my_important_option")

# Tables to exclude from auto-generation - these are managed by Celery
excluded_tables = {
    "celery_taskmeta",
    "celery_tasksetmeta",
}


def include_object(object, name, type_, reflected, compare_to):
    if type_ == "table" and name in excluded_tables:
        return False
    return True


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

    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"},
        include_object=include_object,
    )

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


def run_migrations_online() -> None:
    """
    Run migrations in 'online' mode - directly to the database.

    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,
            include_object=include_object,
        )

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


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