from __future__ import annotations

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

from app.models.base import Base, SoftDeleteMixin, TimestampMixin


class HomeMaterialWatermark(Base, TimestampMixin, SoftDeleteMixin):
    """首页素材水印图片库。"""

    __tablename__ = "home_material_watermarks"
    __table_args__ = (
        Index("idx_home_material_watermarks_active", "deleted_at", "is_active", "created_at"),
        Index("idx_home_material_watermarks_default", "deleted_at", "is_default"),
    )

    id: Mapped[str] = mapped_column(String(32), primary_key=True)
    name: Mapped[str] = mapped_column(String(128), nullable=False, index=True, comment="水印名称")
    file_url: Mapped[str] = mapped_column(Text, nullable=False, comment="水印图片URL")
    storage_path: Mapped[str] = mapped_column(Text, nullable=False, comment="水印图片本地路径")
    file_name: Mapped[str | None] = mapped_column(String(255), nullable=True, comment="原始文件名")
    file_size_bytes: Mapped[int] = mapped_column(BigInteger, default=0, server_default="0", nullable=False, comment="文件大小")
    width: Mapped[int | None] = mapped_column(Integer, nullable=True, comment="水印图片宽度")
    height: Mapped[int | None] = mapped_column(Integer, nullable=True, comment="水印图片高度")
    is_default: Mapped[bool] = mapped_column(Boolean, default=False, server_default="false", nullable=False, index=True, comment="是否默认水印")
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, server_default="true", nullable=False, index=True, comment="是否启用")
    created_by: Mapped[str | None] = mapped_column(String(32), nullable=True, index=True, comment="创建管理员ID")
    updated_by: Mapped[str | None] = mapped_column(String(32), nullable=True, index=True, comment="更新管理员ID")