import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import os
import base64
from email.message import EmailMessage

import google.auth
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError

import pickle
# Gmail API utils
from googleapiclient.discovery import build
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request

SCOPES = ['https://mail.google.com/']

def gmail_authenticate():
    creds = None
    # the file token.pickle stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first time
    if os.path.exists("token.pickle"):
        with open("token.pickle", "rb") as token:
            creds = pickle.load(token)
    # if there are no (valid) credentials availablle, let the user log in.
    if not creds or not creds.valid:
        if creds and creds.expired and creds.refresh_token:
            creds.refresh(Request())
        else:
            flow = InstalledAppFlow.from_client_secrets_file('credentials.json', SCOPES)
            creds = flow.run_local_server(port=0)
        # save the credentials for the next run
        with open("token.pickle", "wb") as token:
            pickle.dump(creds, token)
    return build('gmail', 'v1', credentials=creds)
    
    
def gmail_send_message(service, payload):
    create_message = {"raw": payload}
    # pylint: disable=E1101
    send_message = (
        service.users()
        .messages()
        .send(userId="me", body=create_message)
        .execute()
    )
    return send_message
  
#simple email to a list of recipients
def email_noticication(address_list, subject_text, body_text_list):
    service = gmail_authenticate()
    
    file_string = '\n'.join(body_text_list)
    msg = MIMEMultipart()
    msg['Subject'] = f'{subject_text}'
    msg['Precedence'] = 'bulk'
    msg['From'] = 'x3report@stashtea.com'
    msg['To'] = ','.join(address_list)
    #msg['CC'] = 'bleeson@stashtea.com'
    emailtext = f'{file_string}'
    msg.attach(MIMEText(emailtext, 'plain'))
    encoded_message = base64.urlsafe_b64encode(msg.as_bytes()).decode()
    gmail_send_message(service, encoded_message)
    # with smtplib.SMTP_SSL("smtp-relay.gmail.com", 465) as smtp:
        # smtp.login(user='x3reportmk2@yamamotoyama.com', password=r'n</W<7fr"VD~\2&[pZc5')
        # smtp.send_message(msg)