import asyncio

import click
from loguru import logger

from lnbits.settings import settings

from .core import db as core_db
from .core import migrations as core_migrations
from .core.crud import get_dbversions, get_inactive_extensions
from .core.helpers import migrate_extension_database, run_migration
from .db import COCKROACH, POSTGRES, SQLITE
from .extension_manager import get_valid_extensions


@click.command("migrate")
def db_migrate():
    asyncio.create_task(migrate_databases())


async def migrate_databases():
    """Creates the necessary databases if they don't exist already; or migrates them."""

    async with core_db.connect() as conn:
        exists = False
        if conn.type == SQLITE:
            exists = await conn.fetchone(
                "SELECT * FROM sqlite_master WHERE type='table' AND name='dbversions'"
            )
        elif conn.type in {POSTGRES, COCKROACH}:
            exists = await conn.fetchone(
                "SELECT * FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'dbversions'"
            )

        if not exists:
            await core_migrations.m000_create_migrations_table(conn)

        current_versions = await get_dbversions(conn)
        core_version = current_versions.get("core", 0)
        await run_migration(conn, core_migrations, core_version)

    for ext in get_valid_extensions():
        current_version = current_versions.get(ext.code, 0)
        await migrate_extension_database(ext, current_version)

    logger.info("✔️ All migrations done.")


async def db_versions():
    async with core_db.connect() as conn:
        current_versions = await get_dbversions(conn)
        return current_versions


async def load_disabled_extension_list() -> None:
    """Update list of extensions that have been explicitly disabled"""
    inactive_extensions = await get_inactive_extensions()
    settings.lnbits_deactivated_extensions += inactive_extensions