import pandas as pd
from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker
from sqlalchemy import insert
from db.config import settings
from db.models.base import Base
from db.models.ch_experimentdb_experiment_data_model import ChExperimentDBExperimentData
from db.models.experiment_data_model import ExperimentData
from db.models.experiment_parameters_model import ExperimentParameters
from db.models.load_parameters_model import LoadParameters
from db.models.recycling_parameters_model import RecyclingParameters
import asyncio

engine = create_async_engine(url=settings.db_url_asyncpg_docker, echo=True)

async_session = async_sessionmaker(engine)


def add_ids_in_csv(file: str):
    try:
        df = pd.read_csv(file)
        df.insert(0, 'id', pd.Series(range(1, len(d) + 1)))
        df.to_csv(file, index=False)
    except Exception as e:
        print(f'Exception!! {e}')


def print_headers_and_types(file: str):
    df = pd.read_csv(file)
    headers = df.columns.tolist()
    print(headers)

    for header in headers:
        column_type = df[header].dtype
        print(column_type)


async def create_all_tables():
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)


async def drop_all_tables():
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.drop_all)


async def load_data_to_db(file: str, model_class):
    async with async_session() as session:
        df = pd.read_csv(file).dropna()
        # Преобразование данных из DataFrame в формат, подходящий для SQLAlchemy
        data_records = df.to_dict(orient='records')

        # Пакетная вставка всех записей
        stmt = insert(model_class).values(data_records)
        await session.execute(stmt)

        await session.commit()


async def test(file: str, model_class):
    async with async_session() as session:
        df = pd.read_csv(file)
        df.dropna(inplace=True)
        df = df.head(20)
        data_records = df.to_dict(orient='records')
        stmt = insert(model_class).values(data_records)
        await session.execute(stmt)

        await session.commit()


async def csv_to_db():
    await drop_all_tables()
    await create_all_tables()
    await load_data_to_db('./files/ch_experimentdb_experiment_data.csv', ChExperimentDBExperimentData)
    await test('./files/experiment_data.csv', ExperimentData)
    await load_data_to_db('./files/load_parameters.csv', LoadParameters)
    await load_data_to_db('./files/recycling_parameters.csv', RecyclingParameters)
    await load_data_to_db('./files/experiment_parameters.csv', ExperimentParameters)



# asyncio.run(csv_to_db())