from typing import Any, List

from fastapi import APIRouter, Depends

from app import schemas
from app.chain.download import DownloadChain
from app.core.context import MediaInfo, Context, TorrentInfo
from app.core.metainfo import MetaInfo
from app.core.security import verify_token
from app.db.models.user import User
from app.db.userauth import get_current_active_user

router = APIRouter()


@router.get("/", summary="正在下载", response_model=List[schemas.DownloadingTorrent])
def read_downloading(
        _: schemas.TokenPayload = Depends(verify_token)) -> Any:
    """
    查询正在下载的任务
    """
    return DownloadChain().downloading()


@router.post("/", summary="添加下载", response_model=schemas.Response)
def add_downloading(
        media_in: schemas.MediaInfo,
        torrent_in: schemas.TorrentInfo,
        current_user: User = Depends(get_current_active_user),
        _: schemas.TokenPayload = Depends(verify_token)) -> Any:
    """
    添加下载任务
    """
    # 元数据
    metainfo = MetaInfo(title=torrent_in.title, subtitle=torrent_in.description)
    # 媒体信息
    mediainfo = MediaInfo()
    mediainfo.from_dict(media_in.dict())
    # 种子信息
    torrentinfo = TorrentInfo()
    torrentinfo.from_dict(torrent_in.dict())
    # 上下文
    context = Context(
        meta_info=metainfo,
        media_info=mediainfo,
        torrent_info=torrentinfo
    )
    did = DownloadChain().download_single(context=context, username=current_user.name)
    return schemas.Response(success=True if did else False, data={
        "download_id": did
    })


@router.get("/start/{hashString}", summary="开始任务", response_model=schemas.Response)
def start_downloading(
        hashString: str,
        _: schemas.TokenPayload = Depends(verify_token)) -> Any:
    """
    开如下载任务
    """
    ret = DownloadChain().set_downloading(hashString, "start")
    return schemas.Response(success=True if ret else False)


@router.get("/stop/{hashString}", summary="暂停任务", response_model=schemas.Response)
def stop_downloading(
        hashString: str,
        _: schemas.TokenPayload = Depends(verify_token)) -> Any:
    """
    暂停下载任务
    """
    ret = DownloadChain().set_downloading(hashString, "stop")
    return schemas.Response(success=True if ret else False)


@router.delete("/{hashString}", summary="删除下载任务", response_model=schemas.Response)
def remove_downloading(
        hashString: str,
        _: schemas.TokenPayload = Depends(verify_token)) -> Any:
    """
    删除下载任务
    """
    ret = DownloadChain().remove_downloading(hashString)
    return schemas.Response(success=True if ret else False)