import os 
import io
import pickle
import base64
import streamlit as st
import pandas as pd

from htbuilder import HtmlElement, div, hr, a, p, img, styles
from pathlib import Path
from huggingface_hub.inference_api import InferenceApi
#from google.oauth2 import service_account
#from googleapiclient.discovery import build




######################## LOAD DATA FROM REPO ##########################

@st.cache_data(ttl=3600, show_spinner=False)
def load_data_pickle(path, file):
    """Load data from pickle file"""
    df = pd.read_pickle(os.path.join(path,file))
    return df

@st.cache_data(ttl=3600, show_spinner=False)
def load_data_csv(path, file):
    "Load data from csv file"
    df = pd.read_csv(os.path.join(path,file))
    return df

@st.cache_data(ttl=3600, show_spinner=False)
def load_model_pickle(path, file):
    """Load model from pickle file"""
    path_file = os.path.join(path, file)
    model = pickle.load(open(path_file, 'rb'))
    return model



###################### LOAD MODEL HUGGINGFACE #############################

st.cache_data(ttl=3600)
def load_model_huggingface(repo_id, token, task=None):
    """ Load model using Huggingface's Inference API 
    """
    model = InferenceApi(repo_id=repo_id, token=token, task=task)
    return model


#################### LOAD DATA FROM GOOGLE DRIVE ###################

# @st.cache_data(ttl=3600, show_spinner=False)
# def load_data(file, sheet_name, **kwargs):
#     df = pd.read_excel(file, sheet_name=sheet_name, **kwargs)
#     return df

# @st.cache_data(ttl=3600, show_spinner=False)
# def load_model(file):
#     """Load model from pickle file"""
#     model = pickle.load(file)
#     return model


# @st.cache_data(show_spinner=False) #3600 seconds
# def authenticate_drive():
#     creds = service_account.Credentials.from_service_account_info(
#         st.secrets["connections_gcs"],
#         scopes=["https://www.googleapis.com/auth/drive.readonly"]
#     )
#     drive_service = build('drive', 'v3', credentials=creds)
    
#     return drive_service

# @st.cache_data(ttl=3600, show_spinner=False)
# def load_content_drive(file_id, _drive_service):
#     """ Load content from google drive
#     """
#     request = _drive_service.files().get_media(fileId=file_id)
#     file_content = io.BytesIO(request.execute())
    
#     return file_content
    

# @st.cache_data(ttl=3600, show_spinner=False)
# def load_data_drive(file_content, sheet_name=None, **kwargs):
#     """ Load data using file_content    
#     """
#     if sheet_name is None:
#         df = pd.read_excel(file_content, **kwargs)
#     else:
#         df = pd.read_excel(file_content, sheet_name=sheet_name, **kwargs)
    
#     return df


# @st.cache_data(ttl=3600, show_spinner=False)
# def load_model_drive(file_content):
#     """ Load model using file_content
#     """
#     model = pickle.load(file_content)
#     return model


# def files_in_drive(folder_id, drive_service):
#     results = drive_service.files().list(q=f"'{folder_id}' in parents").execute()
#     files_dict= results.get('files', [])
    
#     return files_dict



#################### PASSEWORD #####################

def check_password():
    """Returns `True` if the user had the correct password."""

    def password_entered():
        """Checks whether a password entered by the user is correct."""
        if "password" in st.session_state and st.session_state["password"] == st.secrets["password"]:
            st.session_state["password_correct"] = True
            del st.session_state["password"]  # don't store password
        else:
            st.session_state["password_correct"] = False

    if "password_correct" not in st.session_state:
        # First run, show input for password.
        st.text_input(
            "Password", type="password", on_change=password_entered, key="password"
        )
        return False
    elif not st.session_state["password_correct"]:
        # Password not correct, show input + error.
        st.text_input(
            "Password", type="password", on_change=password_entered, key="password"
        )
        st.error("😕 Password incorrect")
        return False
    else:
        # Password correct.
        return True






###################### OTHER ######################

def img_to_bytes(img_path):
    img_bytes = Path(img_path).read_bytes()
    encoded = base64.b64encode(img_bytes).decode()
    return encoded


def link(link, text, **style):
    return a(_href=link, _target="_blank", style=styles(**style))(text)

@st.cache_data
def convert_df(df):
# IMPORTANT: Cache the conversion to prevent computation on every rerun
    return df.to_csv().encode('utf-8')