import hashlib
from typing import Sequence

import pandas as pd
from fastapi import HTTPException
from sqlalchemy.future import select

from db.crud import create
from db.models.experiment_parameters_model import ExperimentParameters
from db.postgres_db_connection import async_session_postgres


async def get_exp_parameters_by_category(category_id: int) -> Sequence[ExperimentParameters]:
    async with async_session_postgres() as session:
        result = await session.execute(
            select(ExperimentParameters).where(ExperimentParameters.experiment_category_id == category_id)
        )
        return result.scalars().all()

async def get_exp_parameters_by_exp_hash(exp_hash: str) -> Sequence[ExperimentParameters]:
    async with async_session_postgres() as session:
        result = await session.execute(
            select(ExperimentParameters).where(ExperimentParameters.experiment_hash == exp_hash)
        )
        return result.scalars().all()


def generate_experiment_hash(data: dict) -> str:
    """Генерация уникального хеша на основе данных эксперимента"""
    hash_input = f"{data['outer_blades_count']}_{data['outer_blades_length']}_{data['outer_blades_angle']}_{data['middle_blades_count']}_{data['load']}_{data['recycling_level']}"
    return hashlib.sha256(hash_input.encode()).hexdigest()


async def save_experiment_to_db(df: pd.DataFrame):
    for _, row in df.iterrows():
        try:
            # Преобразуем load и recycling_level в соответствующие id
            load_id = int(row['load'])
            recycling_id = int(row['recycling_level'])

            # Генерация хеша для experiment_hash
            experiment_hash = generate_experiment_hash(row)

            await create(
                ExperimentParameters,
                outer_blades_count=int(row['outer_blades_count']),
                outer_blades_length=float(row['outer_blades_length']),
                outer_blades_angle=float(row['outer_blades_angle']),
                middle_blades_count=int(row['middle_blades_count']),
                load_id= None,
                recycling_id=None,
                experiment_hash=experiment_hash
            )
        except Exception as e:
            print(f"Ошибка при сохранении данных: {e}")
            raise HTTPException(status_code=500, detail=f"Ошибка при сохранении данных: {e}")