"""Scripts AI 能力 Pydantic schemas — Issue #1893.

抖音文案提取、AI 改写、AI 标题生成的请求/响应模型。
"""

from __future__ import annotations

from typing import List, Optional

from pydantic import BaseModel, Field

# ── 抖音文案提取 ─────────────────────────────────────────────────────────────


class ExtractFromDouyinRequest(BaseModel):
    """从抖音视频提取文案请求."""

    url: str = Field(..., description="抖音视频链接（短链或长链）")


class ExtractFromDouyinResponse(BaseModel):
    """从抖音视频提取文案响应."""

    text: str = Field(..., description="ASR 识别出的文案文本")
    duration_seconds: float = Field(..., description="视频时长（秒）")
    source_url: str = Field(..., description="原始视频链接")


# ── AI 改写 ─────────────────────────────────────────────────────────────────


class AiRewriteRequest(BaseModel):
    """AI 文案改写请求."""

    content: str = Field(..., description="原文内容")
    style: Optional[str] = Field("口语化", description="改写风格，如 口语化/正式/活泼")


class AiRewriteResponse(BaseModel):
    """AI 文案改写响应."""

    original: str = Field(..., description="原文")
    rewritten: str = Field(..., description="改写后的文案")
    style: str = Field(..., description="使用的改写风格")


# ── AI 标题生成 ──────────────────────────────────────────────────────────────


class AiGenerateTitlesRequest(BaseModel):
    """AI 标题生成请求."""

    content: str = Field(..., description="文案内容")
    count: int = Field(3, ge=1, le=5, description="生成标题数量（1-5，默认3）")


class AiGenerateTitlesResponse(BaseModel):
    """AI 标题生成响应."""

    titles: List[str] = Field(..., description="生成的标题列表")