from pydantic import BaseModel
from typing import List

class AdminLogin(BaseModel):
    """
    Schema for admin login credentials.

    Attributes:
        username (str): Admin username.
        password (str): Admin password.
    """
    username: str
    password: str


class CodeItem(BaseModel):
    """
    Schema representing a coupon code and its usage count.

    Attributes:
        code (str): The coupon code.
        usage (int): Number of times the code has been used.
    """
    code: str
    usage: int


class CouponUploadItem(BaseModel):
    """
    Schema for an individual coupon code to be uploaded.

    Attributes:
        code (str): The coupon code.
        usage (int): Optional initial usage count (default is 0).
    """
    code: str
    usage: int = 0


class CouponUpload(BaseModel):
    """
    Schema for bulk coupon upload containing a list of coupon items.

    Attributes:
        codes (List[CouponUploadItem]): List of coupon entries.
    """
    codes: List[CouponUploadItem]