from datetime import datetime
from app import db
from app.models import *
from app.schema import *
from marshmallow import ValidationError
from pydoc import locate
from werkzeug.security import check_password_hash


def validate_schema(schema, data):
    schema_name = schema + "Schema"
    validation_schema = locate("app.schema." + schema_name)
    instance = validation_schema()
    instance.load(data)


def validate_json(schema, data):
    validate_schema(schema=schema, data=data)
    model = locate("app.models." + schema)
    instance = model(**data)
    return instance


def insert_data(schema, data):
    instance = validate_json(schema, data)
    db.session.add(instance)
    db.session.commit()


def delete_data(data):
    db.session.delete(data)
    db.session.commit()


def save_otp(mobile, otp):
    db.session.query(table="Users").filter_by(mobile=mobile).update(dict(otp=otp))
    db.session.commit()


def fetch_stored_otp(mobile):
    user = db.session.query(table="Users").filter_by(mobile=mobile)
    otp = user.otp
    return otp


def activate_account(mobile):
    timestamp = datetime.now()
    db.session.query(table="Users").filter_by(mobile=mobile).update(
        dict(otp_valid_time=timestamp)
    )
    db.session.query(table="Users").filter_by(mobile=mobile).update(dict(status=1))


def verify_otp(mobile, otp):
    stored_otp = fetch_stored_otp(mobile=mobile)
    if stored_otp == otp:
        activate_account(mobile=mobile)
        return True
    return False


def fetch_user(data):
    user = db.session.query(table="Users").filter_by(email=data["email"])
    email = user.email
    password = user.password
    return email, password


def verify_login(data):
    user, password = fetch_user(data)
    if user == data["email"] and check_password_hash(password, data["password"]):
        return True
    return False