from datetime import datetime
from pydoc import locate

from app import app
from app.schemas import *
from database import database


@app.on_event("startup")
async def startup():
    await database.connect()


@app.on_event("shutdown")
async def shutdown():
    await database.disconnect()


async def instantiate_model(schema, data):
    model = locate("database.models." + schema)
    instance = model(**data)
    return instance


async def insert_data(schema, data):
    instance = instantiate_model(schema, data)
    query = instance.insert()
    await database.execute(query=query, values=data)


# FIXME instance.id has to be replaced with the table's UID
async def delete_data(schema, data):
    instance = instantiate_model(schema, data)
    query = instance.delete().where(instance.id == data.id)
    await database.execute(query=query)


async def fetch_user(data):
    instance = instantiate_model(schema="Users", data=data)
    query = instance.select().where(instance.email == data.email)
    return await database.fetch_one(query=query)


async def fetch_otp(data: OTPSchema):
    instance = instantiate_model(schema="Users", data=data)
    query = instance.select().where(instance.mobile == data.mobile)
    return await database.fetch_one(query=query)


async def save_otp(data: OTPSchema):
    instance = instantiate_model(schema="Users", data=data)
    query = instance.update().where(instance.mobile == data.mobile).values(otp=data.otp)
    await database.execute(query=query)


async def activate_account(data: OTPSchema):
    timestamp = datetime.now()
    instance = instantiate_model(schema="Users", data=data)
    query = (
        instance.update()
        .where(instance.mobile == data.mobile)
        .values(mobile=instance.data, otp_valid_time=timestamp, status=1)
    )
    await database.execute(query=query)


async def verify_otp(data: OTPSchema):
    user = fetch_otp(data=data)
    stored_otp = user.otp
    if stored_otp == data.otp:
        activate_account(mobile=data.mobile)
        return True
    return False