"""ShareLink model for board sharing functionality."""

import uuid
from datetime import datetime

from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Integer, String
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import relationship

from app.database.base import Base


class ShareLink(Base):
    """ShareLink model representing shareable board links with permissions."""

    __tablename__ = "share_links"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    board_id = Column(UUID(as_uuid=True), ForeignKey("boards.id", ondelete="CASCADE"), nullable=False)
    token = Column(String(64), unique=True, nullable=False, index=True)
    permission_level = Column(String(20), nullable=False)  # 'view-only' or 'view-comment'
    created_at = Column(DateTime, nullable=False, default=datetime.utcnow)
    expires_at = Column(DateTime, nullable=True)
    last_accessed_at = Column(DateTime, nullable=True)
    access_count = Column(Integer, nullable=False, default=0)
    is_revoked = Column(Boolean, nullable=False, default=False)

    # Relationships
    board = relationship("Board", back_populates="share_links")
    comments = relationship("Comment", back_populates="share_link", cascade="all, delete-orphan")

    def __repr__(self) -> str:
        return f"<ShareLink(id={self.id}, board_id={self.board_id}, permission={self.permission_level})>"