from sqlalchemy import Column, Integer, String, Text, Boolean, DateTime, ForeignKey, Date
from sqlalchemy.orm import relationship
from app.database import Base
from app.utils.datetime import utcnow


class AnniversaryCategory(Base):
    """纪念日分类模型"""
    __tablename__ = "anniversary_categories"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(50), nullable=False)
    icon = Column(String(50), default="calendar")
    color = Column(String(20), default="#FFB7C5")
    sort_order = Column(Integer, default=0)

    # 关联关系
    anniversaries = relationship("Anniversary", back_populates="category")


class Anniversary(Base):
    """纪念日模型"""
    __tablename__ = "anniversaries"

    id = Column(Integer, primary_key=True, index=True)
    title = Column(String(200), nullable=False)
    date = Column(Date, nullable=False)  # 月-日，年份部分可选
    year = Column(Integer, nullable=True)  # 年份，用于计算第 N 个周年
    category_id = Column(Integer, ForeignKey("anniversary_categories.id"), nullable=True)
    description = Column(Text, nullable=True)
    is_recurring = Column(Boolean, default=True)
    remind_days_before = Column(Integer, default=3)
    created_at = Column(DateTime, default=utcnow)
    updated_at = Column(DateTime, default=utcnow, onupdate=utcnow)

    # 关联关系
    category = relationship("AnniversaryCategory", back_populates="anniversaries")