user_operations.py

from typing import Optional
from passlib.context import CryptContext
from jose import jwt
from datetime import datetime, timedelta
from db.db_operations import db_operations
from lib.config import secret_key, jwt_algorithm, commission_percentage
from models.user_models import User, Referral
import string
import secrets


pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")

user_repo = db_operations.user_repo


def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)


def get_password_hash(password):
    return pwd_context.hash(password)


async def get_user_by_email(email: str):
    user = await user_repo.get_user_by_email(email)
    if user:
        return User(**user)


async def get_user_by_wallet(wallet_address: str):
    user = await user_repo.get_user_by_wallet(wallet_address)
    if user:
        return User(**user)


async def create_user(
    email: Optional[str],
    wallet_address: Optional[str],
    referred_by_user_id: Optional[int],
):
    user = await user_repo.create_user(email, wallet_address, referred_by_user_id)
    return User(**user)


async def create_referral(referrer_id: int, referred_id: int):
    referral = await user_repo.create_referral(referrer_id, referred_id)
    return Referral(**referral)


def create_access_token(data: dict, expires_delta: Optional[timedelta] = None):
    to_encode = data.copy()
    if expires_delta:
        expire = datetime.utcnow() + expires_delta
    else:
        expire = datetime.utcnow() + timedelta(minutes=15)
    to_encode.update({"exp": expire})
    encoded_jwt = jwt.encode(to_encode, secret_key, algorithm=jwt_algorithm)
    return encoded_jwt


def is_premium_user(user: User):
    return user.role == "premium" or (
        user.subscription_end_date and user.subscription_end_date > datetime.utcnow()
    )


def generate_unique_affiliate_code(length: int = 8) -> str:
    """
    Generate a unique affiliate code efficiently.

    Args:
    length (int): The length of the affiliate code. Default is 8.

    Returns:
    str: A unique affiliate code.
    """
    alphabet = string.ascii_uppercase + string.digits
    return "".join(secrets.choice(alphabet) for _ in range(length))


async def get_user_by_affiliate_code(affiliate_code: str):
    user = await user_repo.get_user_by_affiliate_code(affiliate_code)
    if user:
        return User(**user)


async def create_commission(referrer_id: int, referred_id: int, amount: float):
    commission_amount = amount * float(commission_percentage)
    return await user_repo.create_commission(
        referrer_id, referred_id, commission_amount
    )