"""轮播商品视频的请求与任务响应契约。"""
from __future__ import annotations

from datetime import datetime

from pydantic import BaseModel, Field, field_validator


class VideoCreateRequest(BaseModel):
    """按传入顺序把 2–5 张当前商品图片合成为无音轨轮播视频。"""

    asset_ids: list[str] = Field(min_length=2, max_length=5)

    @field_validator("asset_ids")
    @classmethod
    def asset_ids_must_be_unique(cls, values: list[str]) -> list[str]:
        if len(set(values)) != len(values):
            raise ValueError("合成视频不能重复选择同一张图片")
        return values


class VideoCreateResponse(BaseModel):
    job_id: str


class VideoDeleteResponse(BaseModel):
    deleted: bool = True


class VideoResultOut(BaseModel):
    item_id: str
    status: str
    url: str | None = None
    error: str | None = None


class VideoJobOut(BaseModel):
    id: str
    kind: str = "slideshow_video"
    status: str
    total: int = 1
    completed: int = 0
    failed: int = 0
    cancel_requested: bool = False
    preset: str = "wb_ozon"
    source_asset_ids: list[str] = Field(default_factory=list)
    slide_seconds: float = 0.0
    duration_seconds: float | None = None
    width: int = 810
    height: int = 1080
    file_size_bytes: int | None = None
    created_at: datetime | None = None
    started_at: datetime | None = None
    completed_at: datetime | None = None
    result: VideoResultOut | None = None
    error: str | None = None