"""ShareLink model for board sharing."""
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 for sharing boards with permission control."""

    __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, index=True)
    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, index=True)

    # Relationships
    board = relationship("Board", back_populates="share_links")
    comments = relationship("Comment", back_populates="share_link")

    def __repr__(self) -> str:
        return f"<ShareLink(id={self.id}, token={self.token[:8]}...)>"