import os

from flask import Blueprint, jsonify

from db import db
from helper_functions import get_username_from_token_data, extract_token_data, get_token, get_user_id_from_username, return_401
from models import Transaction

portfolio_blueprint = Blueprint('portfolio', __name__, url_prefix='/api')
__location__ = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))


@portfolio_blueprint.route('/portfolio', methods=['GET'])
def get_portfolio():
    # get username from jwt token
    username = get_username_from_token_data(extract_token_data(get_token()))
    if username is None:  # If token not provided or invalid -> return 401 code
        return return_401()

    return_portfolio = {}
    transactions = db.session.query(Transaction).filter_by(user_id=get_user_id_from_username(username)).all()

    if transactions is not None:
        for row in transactions:
            if row.symbol in return_portfolio:
                return_portfolio[row.symbol]['count'] += row.count
                return_portfolio[row.symbol]['last_transaction'] = row.time
            else:
                return_portfolio[row.symbol] = {"count": row.count, "last_transaction": row.time}

    return jsonify({"status": 200, "text": "Successfully loaded symbols", "data": return_portfolio})