from enum import Enum
from sqlalchemy import Column, Integer, String, Text, DateTime
from sqlalchemy.sql import func
from app.database import Base


class SoftwareLevel(str, Enum):
    """User's software development experience level"""
    beginner = "beginner"
    intermediate = "intermediate"
    advanced = "advanced"


class HardwareLevel(str, Enum):
    """User's hardware/electronics experience level"""
    none = "none"
    basic = "basic"
    experienced = "experienced"


class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    username = Column(String, unique=True, index=True, nullable=True)
    email = Column(String(255), unique=True, index=True, nullable=False)
    hashed_password = Column(String(60), nullable=False)
    software_level = Column(String(20), nullable=False, default="beginner")
    hardware_level = Column(String(20), nullable=False, default="none")
    learning_goals = Column(Text, nullable=False, default="")
    created_at = Column(DateTime(timezone=True), server_default=func.now())