from sqlalchemy import Column, Integer, String, ForeignKey, DateTime
from sqlalchemy.ext.declarative import declarative_base
from datetime import datetime

Base = declarative_base()

class Admin(Base):
    __tablename__ = "admins"
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, index=True, nullable=False)
    password = Column(String(255), nullable=False)

class Reseller(Base):
    __tablename__ = "resellers"
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, index=True, nullable=False)
    password = Column(String(255), nullable=False)
    credits = Column(Integer, default=0)

class VPNUser(Base):
    __tablename__ = "vpn_users"
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, nullable=False)
    reseller_id = Column(Integer, ForeignKey("resellers.id"))
    created_at = Column(DateTime, default=datetime.utcnow)