from __future__ import annotations

from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, Index, Integer, String, Text, text
from sqlalchemy.orm import Mapped, mapped_column

from app.enums.private_portrait import (
    PrivatePortraitProjectStatus,
    PrivatePortraitRemoteDeleteStatus,
)
from app.models.base import Base, SoftDeleteMixin, TimestampMixin


class VpV3Project(Base, TimestampMixin, SoftDeleteMixin):
    """API V3 虚拟素材项目（按 API Key 隔离）。

    一个 VpV3Project 对应火山远端的 1 个 AssetGroup（一对一：这里不做 nested group）。
    """

    __tablename__ = "vp_v3_projects"
    __table_args__ = (
        Index("idx_vp_v3_projects_key_status_created", "api_key_id", "status", "created_at"),
        Index(
            "idx_vp_v3_projects_key_deleted",
            "api_key_id",
            "deleted_at",
            postgresql_where=text("deleted_at IS NULL"),
        ),
        Index("idx_vp_v3_projects_remote_project_name", "remote_project_name"),
        Index("idx_vp_v3_projects_remote_group_id", "remote_group_id"),
    )

    id: Mapped[str] = mapped_column(String(32), primary_key=True)
    api_key_id: Mapped[str] = mapped_column(
        String(32), ForeignKey("api_keys.id", ondelete="CASCADE"), nullable=False, index=True,
        comment="所属 API Key（V3 调用方）",
    )

    name: Mapped[str] = mapped_column(String(128), nullable=False, index=True, comment="项目展示名称")
    name_slug: Mapped[str] = mapped_column(String(128), nullable=False, index=True, comment="名称安全 slug（构建远端 GroupName 用）")
    description: Mapped[str | None] = mapped_column(Text, nullable=True)

    # 火山远端映射
    remote_project_name: Mapped[str] = mapped_column(
        String(256), nullable=False, index=True, comment="火山 ProjectName（快照）",
    )
    remote_group_id: Mapped[str] = mapped_column(
        String(128), nullable=False, index=True, comment="火山 AssetGroup Id",
    )
    remote_group_name: Mapped[str | None] = mapped_column(String(256), nullable=True, comment="火山 AssetGroup Name 快照")

    status: Mapped[str] = mapped_column(
        String(32),
        nullable=False,
        default=PrivatePortraitProjectStatus.ACTIVE.value,
        server_default=PrivatePortraitProjectStatus.ACTIVE.value,
        index=True,
        comment="项目状态：active/creating_remote_group/create_group_failed/deleting",
    )

    # 计数
    asset_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
    active_asset_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
    image_asset_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
    video_asset_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
    active_image_asset_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
    active_video_asset_count: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
    storage_mb_used: Mapped[float] = mapped_column(Integer, nullable=False, default=0, server_default="0",
        comment="项目占用存储 MB（未删除素材文件大小合计）")

    last_used_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

    # 远端删除状态（沿用 private_portrait 枚举）
    remote_delete_status: Mapped[str] = mapped_column(
        String(32),
        nullable=False,
        default=PrivatePortraitRemoteDeleteStatus.NONE.value,
        server_default=PrivatePortraitRemoteDeleteStatus.NONE.value,
        index=True,
    )
    remote_deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
    remote_delete_error: Mapped[str | None] = mapped_column(Text, nullable=True)

    error_message: Mapped[str | None] = mapped_column(Text, nullable=True, comment="创建失败等错误信息")
    raw_response_json: Mapped[str | None] = mapped_column(Text, nullable=True, comment="火山原始响应")