from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Boolean
from datetime import datetime, timezone
from app.database import Base

class Achievement(Base):
    __tablename__ = "achievements"
    id = Column(Integer, primary_key=True, index=True)
    code = Column(String, unique=True, nullable=False)
    name = Column(String, nullable=False)
    description = Column(String, nullable=False)
    emoji = Column(String, default="🏆")
    target = Column(Integer, default=1)  # number needed to unlock

class UserAchievement(Base):
    __tablename__ = "user_achievements"
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    achievement_id = Column(Integer, ForeignKey("achievements.id"), nullable=False)
    unlocked_at = Column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))