meijiaka-zy/python-api/app/api/v1/voice.py

"""
语音合成与克隆 API 路由
=======================

提供 TTS 语音合成、批量合成、声音克隆等功能。
基于 MiniMax TTS 和声音克隆 API。
（Kling AI 语音相关代码保留但已废弃，仅视频/形象克隆仍使用 Kling）
"""

import logging
import re
import tempfile
import uuid
from pathlib import Path

from fastapi import APIRouter, File, Form, HTTPException, UploadFile
from pydantic import BaseModel, Field

from app.schemas.common import ApiResponse, success_response
from app.services.qiniu_service import QiniuService
from app.services.vidu_tts_service import ViduTTSService
from app.services.minimax_tts_service import MiniMaxTTSService  # noqa: F401 历史兼容
from app.services.tts_service import TTSService  # noqa: F401 历史兼容
from app.services.voice_clone_service import VoiceCloneService  # noqa: F401 历史兼容

logger = logging.getLogger(__name__)
router = APIRouter(prefix="/voice", tags=["Voice"])


# ========== 请求/响应模型 ==========


class TTSSynthesizeRequest(BaseModel):
    """TTS 合成请求"""

    text: str = Field(..., min_length=1, max_length=10000, description="待合成文本（≤10000字符）")
    voice_id: str | None = Field(None, description="音色 ID（默认：甜美女性）")
    speed: float = Field(default=1.0, ge=0.5, le=2.0, description="语速 0.5-2.0")
    voice_language: str = Field(default="zh", description="音色语种 (zh/en)")
    volume: int = Field(default=0, ge=0, le=10, description="音量 0-10（0=正常）")
    pitch: int = Field(default=0, ge=-12, le=12, description="音调 -12 到 12")


class TTSBatchSegment(BaseModel):
    """批量合成段落"""

    text: str = Field(..., min_length=1, description="段落文本")
    index: int = Field(default=0, ge=0, description="段落序号")
    filename: str | None = Field(None, description="输出文件名（不含扩展名）")


class TTSBatchRequest(BaseModel):
    """批量 TTS 合成请求"""

    segments: list[TTSBatchSegment] = Field(..., min_length=1, description="段落列表")
    voice_id: str | None = Field(None, description="音色 ID")
    speed: float = Field(default=1.0, ge=0.5, le=2.0, description="语速")
    volume: int = Field(default=0, ge=0, le=10, description="音量 0-10")
    pitch: int = Field(default=0, ge=-12, le=12, description="音调 -12 到 12")


class VoiceCloneSubmitRequest(BaseModel):
    """声音克隆提交请求"""

    source_audio_url: str | None = Field(None, description="源音频 URL（5-30秒，mp3/wav，需公开可访问）")
    source_video_url: str | None = Field(None, description="源视频 URL（可选）")
    video_id: str | None = Field(None, description="历史作品ID（可选）")
    voice_name: str | None = Field(None, description="自定义音色名称（≤20字符）")


class TTSBatchResponse(BaseModel):
    """批量合成结果"""

    total: int
    success_count: int
    failed_count: int
    results: list[dict]


class VoiceCloneTaskResponse(BaseModel):
    """克隆任务响应"""

    task_id: str
    status: str
    voice_id: str | None = None
    trial_url: str | None = None
    error_message: str | None = None


class VoiceUploadResponse(BaseModel):
    """音频上传响应"""

    url: str = Field(..., description="七牛云访问 URL")
    key: str = Field(..., description="存储 Key")


class VoiceInfo(BaseModel):
    """音色信息"""

    voice_id: str
    name: str
    description: str = ""
    language: str = "zh"
    recommended: bool = False
    previewUrl: str | None = None


class LipSyncRequest(BaseModel):
    """对口型请求"""

    video_url: str = Field(..., description="原视频 URL")
    audio_url: str | None = Field(None, description="音频 URL（与 text 二选一）")
    text: str | None = Field(None, description="文本内容（与 audio_url 二选一）")
    voice_id: str | None = Field(None, description="音色 ID（文字驱动时生效）")
    speed: float = Field(default=1.0, ge=0.5, le=2.0, description="语速")
    volume: int = Field(default=0, ge=0, le=10, description="音量")
    ref_photo_url: str | None = Field(None, description="人脸参考图 URL")


class LipSyncResponse(BaseModel):
    """对口型响应"""

    task_id: str
    state: str


class LipSyncQueryResponse(BaseModel):
    """对口型查询响应"""

    task_id: str
    state: str
    video_url: str | None = None
    cover_url: str | None = None


# ========== API 路由 ==========


@router.post("/upload", response_model=ApiResponse[VoiceUploadResponse])
async def upload_voice_file(
    file: UploadFile = File(...),
    file_type: str = Form(default="audio", description="文件类型: audio | video"),
):
    """
    上传音频/视频文件到七牛云

    接收音频（mp3/wav）或视频（mp4/mov）文件，上传至七牛云 media bucket，
    返回公开访问 URL。
    """
    try:
        file_type = file_type.lower().strip()
        if file_type not in ("audio", "video"):
            raise HTTPException(status_code=400, detail="file_type 必须是 audio 或 video")

        # 根据类型校验 MIME
        if file_type == "audio":
            allowed_types = {"audio/mpeg", "audio/mp3", "audio/wav", "audio/x-wav", "audio/mp4"}
            max_size = 20 * 1024 * 1024  # 20MB
            prefix = "meijiaka-zy/voice"
            type_label = "音频"
        else:
            allowed_types = {"video/mp4", "video/quicktime"}
            max_size = 200 * 1024 * 1024  # 200MB
            prefix = "meijiaka-zy/avatar"
            type_label = "视频"

        content_type = file.content_type or "application/octet-stream"
        if content_type not in allowed_types:
            raise HTTPException(
                status_code=400,
                detail=f"不支持的{type_label}格式: {content_type}，仅支持 {', '.join(allowed_types)}",
            )

        # 读取文件内容
        content = await file.read()
        if len(content) > max_size:
            raise HTTPException(status_code=400, detail=f"{type_label}文件大小不能超过 {max_size // 1024 // 1024}MB")

        # 生成存储 key
        ext = content_type.split("/")[-1].replace("quicktime", "mov").replace("mpeg", "mp3")
        key = f"{prefix}/{uuid.uuid4().hex}.{ext}"

        # 上传到七牛云
        qiniu = QiniuService()
        from io import BytesIO

        qiniu.upload_stream(
            stream=BytesIO(content),
            key=key,
            mime_type=content_type,
        )

        # 获取公开 URL（media bucket 使用 video_domain）
        url = qiniu.get_file_url(qiniu.video_domain, key)

        return success_response(
            data=VoiceUploadResponse(url=url, key=key),
            message="上传成功",
        )

    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"[Voice] 上传失败: {e}")
        raise HTTPException(status_code=500, detail=f"上传失败: {str(e)}")


@router.get("/voices", response_model=ApiResponse[list[VoiceInfo]])
async def list_voices():
    """
    获取可用音色列表

    返回预设的音色选项，用户可选择喜欢的音色进行 TTS 合成。
    """
    voices = ViduTTSService.get_preset_voices()
    return success_response(
        data=[VoiceInfo(**v) for v in voices],
        message="获取音色列表成功",
    )


@router.get("/preset-voices/raw", response_model=ApiResponse[list[dict]])
async def list_preset_voices_raw():
    """
    【已废弃】KlingAI 官方预置音色列表

    语音功能已迁移至 Vidu，此端点保留仅作历史兼容。
    """
    return success_response(
        data=[],
        message="语音功能已迁移至 Vidu，请使用 /voices 获取音色列表",
    )


@router.post("/synthesize", response_model=ApiResponse[dict])
async def synthesize_speech(request: TTSSynthesizeRequest):
    """
    同步 TTS 合成

    将文本转换为语音，返回音频 URL。
    适用于短文本（≤1000字），长文本建议使用 /synthesize-batch。
    """
    try:
        service = ViduTTSService()
        audio_url = await service.synthesize_sync(
            text=request.text,
            voice_id=request.voice_id,
            speed=request.speed,
            volume=request.volume,
            pitch=request.pitch,
        )

        return success_response(
            data={
                "audio_url": audio_url,
                "format": "mp3",
                "text": request.text,
                "voice_id": request.voice_id or ViduTTSService.DEFAULT_VOICE_ID,
            },
            message="合成成功",
        )

    except ValueError as e:
        logger.warning(f"[Voice] TTS 参数错误: {e}")
        raise HTTPException(status_code=422, detail=str(e))
    except Exception as e:
        logger.error(f"[Voice] TTS 合成失败: {e}")
        raise HTTPException(status_code=500, detail=f"合成失败: {str(e)}")


@router.post("/synthesize-batch", response_model=ApiResponse[TTSBatchResponse])
async def synthesize_batch(request: TTSBatchRequest):
    """
    批量 TTS 合成

    将多段文本批量转换为语音，保存到临时目录。
    适用于长文本分段合成场景。
    """
    try:
        # 使用系统临时目录
        output_dir = Path(tempfile.gettempdir()) / "meijiaka-zy_tts"
        output_dir.mkdir(parents=True, exist_ok=True)

        segments_data = [s.model_dump() for s in request.segments]

        service = ViduTTSService()
        # Vidu 暂不支持批量合成，逐段调用
        results = []
        for seg in segments_data:
            try:
                audio_url = await service.synthesize_sync(
                    text=seg["text"],
                    voice_id=request.voice_id,
                    speed=request.speed,
                    volume=request.volume,
                    pitch=request.pitch,
                )
                results.append({
                    "index": seg.get("index", 0),
                    "success": True,
                    "audio_url": audio_url,
                    "filename": seg.get("filename"),
                })
            except Exception as e:
                results.append({
                    "index": seg.get("index", 0),
                    "success": False,
                    "error": str(e),
                    "filename": seg.get("filename"),
                })

        success_count = sum(1 for r in results if r["success"])
        failed_count = len(results) - success_count

        return success_response(
            data=TTSBatchResponse(
                total=len(results),
                success_count=success_count,
                failed_count=failed_count,
                results=results,
            ),
            message=f"批量合成完成：成功 {success_count} 段，失败 {failed_count} 段",
        )

    except Exception as e:
        logger.error(f"[Voice] 批量 TTS 失败: {e}")
        raise HTTPException(status_code=500, detail=f"批量合成失败: {str(e)}")


@router.post("/synthesize-file", response_model=ApiResponse[dict])
async def synthesize_to_file(request: TTSSynthesizeRequest, output_path: str):
    """
    TTS 合成并保存到指定路径

    将文本转换为语音并保存到指定文件路径。
    """
    try:
        service = ViduTTSService()
        audio_url = await service.synthesize_sync(
            text=request.text,
            voice_id=request.voice_id,
            speed=request.speed,
            volume=request.volume,
            pitch=request.pitch,
        )

        # 下载音频并保存到指定路径
        import httpx
        async with httpx.AsyncClient() as client:
            response = await client.get(audio_url)
            response.raise_for_status()
            Path(output_path).parent.mkdir(parents=True, exist_ok=True)
            Path(output_path).write_bytes(response.content)

        return success_response(
            data={
                "file_path": output_path,
                "text": request.text,
                "voice_id": request.voice_id or ViduTTSService.DEFAULT_VOICE_ID,
            },
            message="文件保存成功",
        )

    except ValueError as e:
        logger.warning(f"[Voice] TTS 参数错误: {e}")
        raise HTTPException(status_code=422, detail=str(e))
    except Exception as e:
        logger.error(f"[Voice] TTS 文件保存失败: {e}")
        raise HTTPException(status_code=500, detail=f"保存失败: {str(e)}")


def _normalize_voice_id(name: str | None) -> str:
    """
    将用户输入的名称规范化为 Vidu 合法的 voice_id。

    Vidu 要求：8~256 字符，首字符必须是字母。
    """
    if not name:
        return f"vidu_{uuid.uuid4().hex[:8]}"

    # 只保留字母、数字、下划线
    cleaned = re.sub(r"[^a-zA-Z0-9_]", "", name)

    # 确保首字符是字母
    if cleaned and not cleaned[0].isalpha():
        cleaned = "v" + cleaned
    elif not cleaned:
        cleaned = "voice"

    # 长度不足 8，补足随机字符
    if len(cleaned) < 8:
        cleaned = cleaned + uuid.uuid4().hex[: (8 - len(cleaned))]

    # 长度超过 256，截断
    if len(cleaned) > 256:
        cleaned = cleaned[:256]

    return cleaned


@router.post("/clone/submit", response_model=ApiResponse[VoiceCloneTaskResponse])
async def submit_clone_task(request: VoiceCloneSubmitRequest):
    """
    提交声音克隆任务（Vidu）

    Vidu 声音复刻是同步接口，直接返回结果。
    """
    try:
        voice_id = _normalize_voice_id(request.voice_name)
        service = ViduTTSService()
        result = await service.clone_voice(
            audio_url=request.source_audio_url or "",
            voice_id=voice_id,
        )

        # Vidu 同步返回，状态直接为 succeeded
        return success_response(
            data=VoiceCloneTaskResponse(
                task_id=result.get("task_id", ""),
                status="succeeded",
                voice_id=result.get("voice_id"),
                trial_url=result.get("demo_audio"),
            ),
            message="克隆成功",
        )

    except ValueError as e:
        logger.warning(f"[Voice] 克隆参数错误: {e}")
        raise HTTPException(status_code=422, detail=str(e))
    except Exception as e:
        logger.error(f"[Voice] 提交克隆任务失败: {e}")
        raise HTTPException(status_code=500, detail=f"提交失败: {str(e)}")


@router.get("/clone/query/{task_id}", response_model=ApiResponse[VoiceCloneTaskResponse])
async def query_clone_task(task_id: str, blocking: bool = False):
    """
    查询声音克隆任务状态（Vidu）

    Vidu 声音复刻是同步接口，此端点仅做兼容，直接返回成功状态。
    """
    return success_response(
        data=VoiceCloneTaskResponse(
            task_id=task_id,
            status="succeeded",
        ),
        message="克隆已完成",
    )


@router.post("/clone/clone-and-wait", response_model=ApiResponse[VoiceCloneTaskResponse])
async def clone_and_wait(request: VoiceCloneSubmitRequest, poll_interval: float = 5.0):
    """
    一站式克隆（提交并等待完成）

    提交克隆任务并阻塞等待结果，直接返回最终状态。
    适用于需要等待克隆完成的场景。
    """
    try:
        voice_id = _normalize_voice_id(request.voice_name)
        service = ViduTTSService()
        result = await service.clone_voice(
            audio_url=request.source_audio_url or "",
            voice_id=voice_id,
        )

        return success_response(
            data=VoiceCloneTaskResponse(
                task_id=result.get("task_id", ""),
                status="succeeded",
                voice_id=result.get("voice_id"),
                trial_url=result.get("demo_audio"),
            ),
            message="克隆成功",
        )

    except ValueError as e:
        logger.warning(f"[Voice] 克隆参数错误: {e}")
        raise HTTPException(status_code=422, detail=str(e))
    except Exception as e:
        logger.error(f"[Voice] 克隆失败: {e}")
        raise HTTPException(status_code=500, detail=f"克隆失败: {str(e)}")


# ==================== 对口型 ====================


@router.post("/lip-sync", response_model=ApiResponse[LipSyncResponse])
async def create_lip_sync(request: LipSyncRequest):
    """
    创建对口型任务（异步接口）

    输入视频 + 音频/文字，生成对口型视频。
    返回 task_id，需通过 /lip-sync/{task_id} 查询结果。
    """
    try:
        if not request.audio_url and not request.text:
            raise ValueError("audio_url 和 text 至少传一个")

        service = ViduTTSService()
        task_id = await service.lip_sync_create(
            video_url=request.video_url,
            audio_url=request.audio_url,
            text=request.text,
            voice_id=request.voice_id,
            speed=request.speed,
            volume=request.volume,
            ref_photo_url=request.ref_photo_url,
        )

        return success_response(
            data=LipSyncResponse(task_id=task_id, state="created"),
            message="对口型任务已创建",
        )

    except ValueError as e:
        logger.warning(f"[Voice] 对口型参数错误: {e}")
        raise HTTPException(status_code=422, detail=str(e))
    except Exception as e:
        logger.error(f"[Voice] 对口型任务创建失败: {e}")
        raise HTTPException(status_code=500, detail=f"创建失败: {str(e)}")


@router.get("/lip-sync/{task_id}", response_model=ApiResponse[LipSyncQueryResponse])
async def query_lip_sync(task_id: str):
    """
    查询对口型任务状态

    返回任务状态及生成物 URL（24小时有效期）。
    """
    try:
        service = ViduTTSService()
        result = await service.lip_sync_query(task_id)

        state = result.get("state", "unknown")
        creations = result.get("creations", [])
        video_url = creations[0].get("url") if creations else None
        cover_url = creations[0].get("cover_url") if creations else None

        return success_response(
            data=LipSyncQueryResponse(
                task_id=task_id,
                state=state,
                video_url=video_url,
                cover_url=cover_url,
            ),
            message=f"任务状态: {state}",
        )

    except Exception as e:
        logger.error(f"[Voice] 查询对口型任务失败: {e}")
        raise HTTPException(status_code=500, detail=f"查询失败: {str(e)}")