package service

import (
	"context"

	"go-common/app/interface/main/playlist/model"
	favmdl "go-common/app/service/main/favorite/model"
	"go-common/library/log"
	"go-common/library/net/metadata"
)

func (s *Service) plsByMid(c context.Context, mid int64) (res []*model.PlStat, err error) {
	if res, err = s.dao.StatsCache(c, mid); err != nil || len(res) == 0 {
		err = nil
		if res, err = s.dao.PlsByMid(c, mid); err != nil {
			log.Error("s.dao.PlsByMid(%d) error(%v)", mid, err)
			return
		}
		if len(res) > 0 {
			s.cache.Save(func() {
				s.dao.SetStatsCache(context.Background(), mid, res)
			})
		}
	}
	return
}

func (s *Service) plByPid(c context.Context, pid int64) (res *model.PlStat, err error) {
	var pls []*model.PlStat
	pids := []int64{pid}
	if pls, err = s.dao.PlsCache(c, pids); err != nil {
		err = nil
	} else if len(pls) != 0 {
		res = pls[0]
		return
	}
	if res, err = s.dao.PlByPid(c, pid); err != nil {
		log.Error("s.dao.PlByPid(%d) error(%v)", pid, err)
	}
	return
}
func (s *Service) plsByPid(c context.Context, pids []int64) (res []*model.PlStat, err error) {
	var (
		tmpRs []*model.PlStat
		rsMap map[int64]*model.PlStat
	)
	if tmpRs, err = s.dao.PlsCache(c, pids); err != nil || len(pids) != len(tmpRs) || len(tmpRs) == 0 {
		err = nil
		if tmpRs, err = s.dao.PlsByPid(c, pids); err != nil {
			log.Error("s.dao.PlsByPid(%+v) error(%v)", pids, err)
		}
		if len(tmpRs) > 0 {
			s.cache.Save(func() {
				s.dao.SetPlCache(context.Background(), tmpRs)
			})
		}
	}
	rsMap = make(map[int64]*model.PlStat)
	for _, v := range tmpRs {
		rsMap[v.ID] = v
	}
	for _, v := range pids {
		if rsMap[v] == nil {
			continue
		}
		res = append(res, rsMap[v])
	}
	return
}

// SetStat  set playlist stat cache.
func (s *Service) SetStat(c context.Context, arg *model.PlStat) (err error) {
	var fav *favmdl.Folder
	argFav := &favmdl.ArgFolder{Type: favmdl.TypePlayVideo, Fid: arg.Fid, Mid: arg.Mid, RealIP: ""}
	if fav, err = s.fav.Folder(c, argFav); err != nil || fav == nil {
		log.Error("SetStat s.fav.Folder(%+v) error(%v)", argFav, err)
		return
	}
	log.Info("service SetStat(%v) favState(%d)", arg, fav.State)
	if fav.State == favmdl.StateNormal {
		if err = s.dao.SetPlStatCache(c, arg.Mid, arg.ID, arg); err != nil {
			log.Error("SetStat s.dao.SetPlStatCache(%d,%d) error(%v)", arg.Mid, arg.ID, err)
		}
	}
	return
}

// PubView pub playlist view.
func (s *Service) PubView(c context.Context, pid, aid int64) (err error) {
	var (
		pls *model.PlStat
		ip  = metadata.String(c, metadata.RemoteIP)
	)
	if pls, err = s.plInfo(c, 0, pid, ip); err != nil {
		return
	}
	//TODO aid in playlist
	err = s.cache.Save(func() {
		s.dao.PubView(context.Background(), pid, aid, pls.View)
	})
	return
}

// PubShare pub playlist share.
func (s *Service) PubShare(c context.Context, pid, aid int64) (err error) {
	var (
		pls *model.PlStat
		ip  = metadata.String(c, metadata.RemoteIP)
	)
	if pls, err = s.plInfo(c, 0, pid, ip); err != nil {
		return
	}
	//TODO aid in playlist
	err = s.cache.Save(func() {
		s.dao.PubShare(context.Background(), pid, aid, pls.Share)
	})
	return
}