backend/apps/webui/internal/db.py

import json

from peewee import *
from peewee_migrate import Router
from playhouse.db_url import connect
from config import SRC_LOG_LEVELS, DATA_DIR, DATABASE_URL, BACKEND_DIR
import os
import logging

log = logging.getLogger(__name__)
log.setLevel(SRC_LOG_LEVELS["DB"])


class JSONField(TextField):
    def db_value(self, value):
        return json.dumps(value)

    def python_value(self, value):
        if value is not None:
            return json.loads(value)


# Check if the file exists
if os.path.exists(f"{DATA_DIR}/ollama.db"):
    # Rename the file
    os.rename(f"{DATA_DIR}/ollama.db", f"{DATA_DIR}/webui.db")
    log.info("Database migrated from Ollama-WebUI successfully.")
else:
    pass

DB = connect(DATABASE_URL)
log.info(f"Connected to a {DB.__class__.__name__} database.")
router = Router(
    DB,
    migrate_dir=BACKEND_DIR / "apps" / "webui" / "internal" / "migrations",
    logger=log,
)
router.run()
DB.connect(reuse_if_open=True)