package vidmod

import (
	"time"

	"91porn-server/common/stderr"
	"91porn-server/models/commod"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo/options"
)

const rankingQueryMaxTime = 3 * time.Second

// FindCumulativeRanking keeps the ranking usable when the Redis period rank is
// empty. It reuses persisted popularity counters and the existing compound
// index for a bounded fallback query.
func FindCumulativeRanking(newsType string, page commod.Page) ([]*VideoModel, bool, error) {
	if newsType == "" || page.PageNumber == 0 || page.PageSize == 0 || page.PageSize > 100 {
		return nil, false, stderr.ErrParamError
	}
	filter, sorts := cumulativeRankingQuery(newsType)
	opts := options.Find().
		SetSkip(page.Skip64()).
		SetLimit(page.Limit64()).
		SetSort(sorts).
		SetMaxTime(rankingQueryMaxTime)
	return FindList(filter, opts)
}

func cumulativeRankingQuery(newsType string) (bson.M, bson.D) {
	return bson.M{
		"newsType": newsType,
		"status":   bson.M{"$in": []int{CheckPass, Free}},
	}, bson.D{{Key: "likeCount", Value: -1}, {Key: "reviewAt", Value: -1}}
}