import datetime
import logging
import uuid
from typing import Optional

from fastapi import APIRouter, HTTPException, Query, Request
from fastapi.responses import JSONResponse
from pydantic import BaseModel

from Config import Config
from Util.VideoRetalk import VideoRetalk

# 创建视频生成路由
router = APIRouter(prefix="/api/video", tags=["视频生成"])

# 配置日志
logger = logging.getLogger(__name__)

# 仅保留视频相关模型定义
class VideoRetalkRequest(BaseModel):
    """视频生成请求参数"""
    image_url: str
    audio_url: str
    template_id: Optional[str] = "normal"
    eye_move_freq: Optional[float] = 0.5
    video_fps: Optional[int] = 30
    mouth_move_strength: Optional[float] = 1.0
    paste_back: Optional[bool] = True
    head_move_strength: Optional[float] = 0.7


class VideoRetalkResponse(BaseModel):
    """视频生成响应"""
    success: bool
    message: str
    task_id: Optional[str] = None
    video_url: Optional[str] = None
    video_duration: Optional[float] = None
    video_ratio: Optional[str] = None
    request_id: Optional[str] = None


@router.post("/generate", response_model=VideoRetalkResponse)
async def generate_video(request: VideoRetalkRequest):
    """
    生成人物朗读视频接口
    根据输入的人物图片和音频，生成口型匹配的朗读视频
    """
    try:
        # 初始化VideoRetalk实例
        video_retalk = VideoRetalk(Config.ALY_LLM_API_KEY)
        
        # 调用视频生成方法
        video_url = video_retalk.generate_video(
            image_url=request.image_url,
            audio_url=request.audio_url,
            template_id=request.template_id,
            eye_move_freq=request.eye_move_freq,
            video_fps=request.video_fps,
            mouth_move_strength=request.mouth_move_strength,
            paste_back=request.paste_back,
            head_move_strength=request.head_move_strength
        )
        
        if video_url:
            return VideoRetalkResponse(
                success=True,
                message="视频生成成功",
                video_url=video_url,
                # 以下字段在实际实现中可以从API响应中获取
                task_id=str(uuid.uuid4()),
                video_duration=10.23,  # 示例值，实际应从API响应获取
                video_ratio="standard",  # 示例值，实际应从API响应获取
                request_id=str(uuid.uuid4())
            )
        else:
            return VideoRetalkResponse(
                success=False,
                message="视频生成失败"
            )
            
    except Exception as e:
        logger.error(f"视频生成接口错误: {e}")
        raise HTTPException(
            status_code=500, 
            detail=f"视频生成失败: {str(e)}"
        )


@router.get("/task/status")
async def get_task_status(task_id: str = Query(..., description="任务ID")):
    """
    查询视频生成任务状态
    """
    try:
        video_retalk = VideoRetalk(Config.ALY_LLM_API_KEY)
        task_status = video_retalk.get_task_status(task_id)
        
        return {
            "success": True,
            "data": task_status
        }
        
    except Exception as e:
        logger.error(f"查询任务状态错误: {e}")
        raise HTTPException(
            status_code=500, 
            detail=f"查询任务状态失败: {str(e)}"
        )


@router.get("/health")
async def health_check():
    """
    健康检查接口
    """
    return {
        "status": "healthy",
        "timestamp": datetime.datetime.now().isoformat(),
        "service": "VideoRetalk API"
    }


# 保留全局异常处理
def global_exception_handler(request: Request, exc: Exception):
    logger.error(f"全局异常: {exc}")
    return JSONResponse(
        status_code=500,
        content={"success": False, "message": f"服务器内部错误: {str(exc)}"}
    )