from sqlalchemy import BigInteger, Integer, String, Text
from sqlalchemy.orm import Mapped, mapped_column

from app.core.base_model import ModelMixin, TenantMixin, UserMixin


class FileModel(ModelMixin, TenantMixin, UserMixin):
    """通用文件记录模型。"""

    __tablename__: str = "common_file"
    __table_args__: dict[str, str] = {"comment": "通用文件记录表"}
    __loader_options__: list[str] = [
        "created_by",
        "updated_by",
        "deleted_by",
        "tenant_by",
    ]

    storage_type: Mapped[str] = mapped_column(String(20), nullable=False, default="local", comment="存储类型: local/minio", index=True)
    bucket_name: Mapped[str | None] = mapped_column(String(128), default=None, nullable=True, comment="MinIO存储桶")
    object_name: Mapped[str | None] = mapped_column(String(512), default=None, nullable=True, comment="MinIO对象名称")
    original_name: Mapped[str] = mapped_column(String(255), nullable=False, comment="原始文件名")
    file_name: Mapped[str] = mapped_column(String(255), nullable=False, comment="存储文件名")
    file_ext: Mapped[str | None] = mapped_column(String(32), default=None, nullable=True, comment="文件扩展名", index=True)
    content_type: Mapped[str | None] = mapped_column(String(128), default=None, nullable=True, comment="文件MIME类型")
    file_size: Mapped[int] = mapped_column(BigInteger, default=0, nullable=False, comment="文件大小，单位字节")
    file_path: Mapped[str | None] = mapped_column(String(512), default=None, nullable=True, comment="本地路径或对象路径")
    file_url: Mapped[str | None] = mapped_column(Text, default=None, nullable=True, comment="文件访问地址")
    upload_type: Mapped[str] = mapped_column(String(32), default="file", nullable=False, comment="上传类型", index=True)
    business_type: Mapped[str | None] = mapped_column(String(64), default=None, nullable=True, comment="业务类型", index=True)
    business_id: Mapped[int | None] = mapped_column(Integer, default=None, nullable=True, comment="业务ID", index=True)