"""Database models for file storage"""
from sqlalchemy import Column, String, BigInteger, DateTime, Index, ForeignKey
from sqlalchemy.orm import relationship
from datetime import datetime
from app.core.database import Base


class RoomFile(Base):
    """File uploaded to an incident room"""

    __tablename__ = "room_files"

    # Primary key
    file_id = Column(String(36), primary_key=True)

    # Foreign key to incident room (CASCADE delete when room is permanently deleted)
    room_id = Column(String(36), ForeignKey("incident_rooms.room_id", ondelete="CASCADE"), nullable=False)

    # File metadata
    uploader_id = Column(String(255), nullable=False)
    filename = Column(String(255), nullable=False)
    file_type = Column(String(20), nullable=False)  # 'image', 'document', 'log'
    mime_type = Column(String(100), nullable=False)
    file_size = Column(BigInteger, nullable=False)  # bytes

    # MinIO storage information
    minio_bucket = Column(String(100), nullable=False)
    minio_object_path = Column(String(500), nullable=False)

    # Timestamps
    uploaded_at = Column(DateTime, default=datetime.utcnow, nullable=False)
    deleted_at = Column(DateTime, nullable=True)  # soft delete

    # Relationships
    room = relationship("IncidentRoom", back_populates="files")

    # Indexes
    __table_args__ = (
        Index("ix_room_files", "room_id", "uploaded_at"),
        Index("ix_file_uploader", "uploader_id"),
    )

    def __repr__(self):
        return f"<RoomFile(file_id={self.file_id}, filename={self.filename}, room_id={self.room_id})>"