import time

from sqlalchemy import Column, Integer, String, Sequence, Boolean, func
from sqlalchemy.orm import Session

from app.db.models import Base


class TransferHistory(Base):
    """
    转移历史记录
    """
    id = Column(Integer, Sequence('id'), primary_key=True, index=True)
    # 源目录
    src = Column(String, index=True)
    # 目标目录
    dest = Column(String)
    # 转移模式 move/copy/link...
    mode = Column(String)
    # 类型 电影/电视剧
    type = Column(String)
    # 二级分类
    category = Column(String)
    # 标题
    title = Column(String, index=True)
    # 年份
    year = Column(String)
    tmdbid = Column(Integer)
    imdbid = Column(String)
    tvdbid = Column(Integer)
    doubanid = Column(String)
    # Sxx
    seasons = Column(String)
    # Exx
    episodes = Column(String)
    # 海报
    image = Column(String)
    # 下载器hash
    download_hash = Column(String, index=True)
    # 转移成功状态
    status = Column(Boolean(), default=True)
    # 转移失败信息
    errmsg = Column(String)
    # 时间
    date = Column(String, index=True)

    @staticmethod
    def list_by_title(db: Session, title: str, page: int = 1, count: int = 30):
        return db.query(TransferHistory).filter(TransferHistory.title.like(f'%{title}%')).order_by(
            TransferHistory.date.desc()).offset((page - 1) * count).limit(
            count).all()

    @staticmethod
    def list_by_page(db: Session, page: int = 1, count: int = 30):
        return db.query(TransferHistory).order_by(TransferHistory.date.desc()).offset((page - 1) * count).limit(
            count).all()

    @staticmethod
    def get_by_hash(db: Session, download_hash: str):
        return db.query(TransferHistory).filter(TransferHistory.download_hash == download_hash).first()

    @staticmethod
    def get_by_src(db: Session, src: str):
        return db.query(TransferHistory).filter(TransferHistory.src == src).first()

    @staticmethod
    def statistic(db: Session, days: int = 7):
        """
        统计最近days天的下载历史数量，按日期分组返回每日数量
        """
        sub_query = db.query(func.substr(TransferHistory.date, 1, 10).label('date'),
                             TransferHistory.id.label('id')).filter(
            TransferHistory.date >= time.strftime("%Y-%m-%d %H:%M:%S",
                                                  time.localtime(time.time() - 86400 * days))).subquery()
        return db.query(sub_query.c.date, func.count(sub_query.c.id)).group_by(sub_query.c.date).all()

    @staticmethod
    def count(db: Session):
        return db.query(func.count(TransferHistory.id)).first()[0]

    @staticmethod
    def count_by_title(db: Session, title: str):
        return db.query(func.count(TransferHistory.id)).filter(TransferHistory.title.like(f'%{title}%')).first()[0]

    @staticmethod
    def list_by(db: Session, mtype: str, title: str, year: int, season=None, episode=None):
        """
        据tmdbid、season、season_episode查询转移记录
        """
        # 电视剧所有季集｜电影
        if not season and not episode:
            return db.query(TransferHistory).filter(TransferHistory.type == mtype,
                                                    TransferHistory.title == title,
                                                    TransferHistory.year == year).all()
        # 电视剧某季
        if season and not episode:
            return db.query(TransferHistory).filter(TransferHistory.type == mtype,
                                                    TransferHistory.title == title,
                                                    TransferHistory.year == year,
                                                    TransferHistory.seasons == season).all()
        # 电视剧某季某集
        if season and episode:
            return db.query(TransferHistory).filter(TransferHistory.type == mtype,
                                                    TransferHistory.title == title,
                                                    TransferHistory.year == year,
                                                    TransferHistory.seasons == season,
                                                    TransferHistory.episodes == episode).all()