package dao

import (
	"context"
	"fmt"

	"go-common/app/job/main/thumbup/model"
	"go-common/library/cache/redis"
	"go-common/library/log"
)

func userLikesKey(businessID, mid int64, state int8) string {
	return fmt.Sprintf("u_m_%d_b_%d_%d", mid, businessID, state)
}

// ExpireUserLikesCache .
func (d *Dao) ExpireUserLikesCache(c context.Context, mid, businessID int64, state int8) (ok bool, err error) {
	conn := d.redis.Get(c)
	defer conn.Close()
	key := userLikesKey(businessID, mid, state)
	if ok, err = redis.Bool(conn.Do("EXPIRE", key, d.redisUserLikesExpire)); err != nil {
		log.Errorv(c, log.KV("log", fmt.Sprintf("conn.Send(EXPIRE, %s) error(%v)", key, err)))
	}
	return
}

// AppendCacheUserLikeList .
func (d *Dao) AppendCacheUserLikeList(c context.Context, mid int64, item *model.ItemLikeRecord, businessID int64, state int8, limit int) (err error) {
	if item == nil {
		return
	}
	var count int
	conn := d.redis.Get(c)
	defer conn.Close()
	key := userLikesKey(businessID, mid, state)
	id := item.MessageID
	score := int64(item.Time)
	if err = conn.Send("ZADD", key, "CH", score, id); err != nil {
		log.Errorv(c, log.KV("log", fmt.Sprintf("conn.Send(ZADD, %s, %d, %v) error(%v)", key, score, id, err)))
		return
	}
	count++
	if err = conn.Send("ZREMRANGEBYRANK", key, 0, -(limit + 1)); err != nil {
		log.Errorv(c, log.KV("log", fmt.Sprintf("conn.Send(ZREMRANGEBYRANK, %s, 0, %d) error(%v)", key, -(limit+1), err)))
		return
	}
	count++
	if err = conn.Send("EXPIRE", key, d.redisUserLikesExpire); err != nil {
		log.Errorv(c, log.KV("log", fmt.Sprintf("conn.Send(EXPIRE, %s, %d) error(%v)", key, d.redisUserLikesExpire, err)))
		return
	}
	count++
	if err = conn.Flush(); err != nil {
		log.Errorv(c, log.KV("log", fmt.Sprintf("conn.Flush error(%v)", err)))
		return
	}
	for i := 0; i < count; i++ {
		if _, err = conn.Receive(); err != nil {
			log.Errorv(c, log.KV("log", fmt.Sprintf("conn.Receive error(%v)", err)))
			return
		}
	}
	return
}

// AddUserLikesCache .
func (d *Dao) AddUserLikesCache(c context.Context, mid, businessID int64, items []*model.ItemLikeRecord, typ int8, limit int) (err error) {
	if len(items) == 0 {
		return
	}
	conn := d.redis.Get(c)
	defer conn.Close()
	key := userLikesKey(businessID, mid, typ)
	if err = conn.Send("DEL", key); err != nil {
		log.Errorv(c, log.KV("AddCacheUserLikeList", fmt.Sprintf("conn.Send(DEL, %s) error(%+v)", key, err)))
		return
	}
	args := redis.Args{}.Add(key).Add("CH")
	for _, item := range items {
		args = args.Add(int64(item.Time)).Add(item.MessageID)
	}
	if err = conn.Send("ZADD", args...); err != nil {
		log.Error("zadd key(%s) args(%v) error(%v)", key, args, err)
		return
	}
	if err = conn.Send("ZREMRANGEBYRANK", key, 0, -(limit + 1)); err != nil {
		log.Error("zremrangebyrank error(%v)", err)
		return
	}
	if err = conn.Send("EXPIRE", key, d.redisUserLikesExpire); err != nil {
		log.Error("expire key(%s) error(%v)", key, err)
		return
	}
	if err = conn.Flush(); err != nil {
		log.Error("redis flush error(%v)", err)
		return
	}
	for i := 0; i < 4; i++ {
		if _, err = conn.Receive(); err != nil {
			log.Error("redis receive error(%v)", err)
			return
		}
	}
	return
}

// DelUserLikeCache .
func (d *Dao) DelUserLikeCache(c context.Context, mid, businessID int64, messageID int64, state int8) (err error) {
	conn := d.redis.Get(c)
	defer conn.Close()
	key := userLikesKey(businessID, mid, state)
	if _, err = conn.Do("ZREM", key, messageID); err != nil {
		log.Errorv(c, log.KV("log", fmt.Sprintf("conn.Send(ZREM, %s, %v) error(%v)", key, messageID, err)))
	}
	return
}