"""
@model ProductReviewModel (Backend/app/models/ProductReviewModel.py)
@purpose Relational Product Review and normalized ProductReviewImage models for moderated customer feedback.
"""
from sqlalchemy import Column, String, Integer, Boolean, Text, ForeignKey
from sqlalchemy.orm import relationship
from app.models.db_base import Base
from app.models.audit_base import AuditBaseMixin

class ProductReview(Base, AuditBaseMixin):
    __tablename__ = "product_reviews"

    review_id = Column(String(36), primary_key=True, index=True)
    product_id = Column(String(36), ForeignKey("products.product_id"), nullable=False, index=True)
    user_id = Column(String(36), nullable=True, index=True)
    author_name = Column(String(128), nullable=False)
    author_email = Column(String(255), nullable=True)
    rating = Column(Integer, nullable=False, default=5)
    title = Column(String(255), nullable=False)
    comment = Column(Text, nullable=False)
    verified_purchase = Column(Boolean, default=True, nullable=False)
    is_approved = Column(Boolean, default=True, nullable=False, index=True)
    helpful_count = Column(Integer, default=0, nullable=False)
    admin_reply = Column(Text, nullable=True)

    images = relationship("ProductReviewImage", back_populates="review", cascade="all, delete-orphan")

class ProductReviewImage(Base, AuditBaseMixin):
    __tablename__ = "product_review_images"

    image_id = Column(String(36), primary_key=True, index=True)
    review_id = Column(String(36), ForeignKey("product_reviews.review_id"), nullable=False, index=True)
    image_url = Column(String(1000), nullable=False)
    caption = Column(String(255), nullable=True)
    display_order = Column(Integer, default=0, nullable=False)
    is_approved = Column(Boolean, default=True, nullable=False, index=True)

    review = relationship("ProductReview", back_populates="images")