package util

import (
	"context"
	"fmt"
	"github.com/spf13/viper"
	"github.com/zhenghaoz/gorse/client"
	"time"
)

var gorse *client.GorseClient

func init() {
	gorse = client.NewGorseClient(viper.GetString("gorse.addr"), "")

}

func GetTime(tie uint) string {
	t := time.Unix(int64(tie), 0)
	date := t.Format("2006-01-02")
	return date
}

func Recommend(uid, goodsId, tie uint) {
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*100)
	defer cancel()
	date := GetTime(tie)
	aff, err := gorse.InsertFeedback(ctx, []client.Feedback{
		{FeedbackType: "star",
			UserId:    fmt.Sprintf("%d", uid),
			ItemId:    fmt.Sprintf("%d", goodsId),
			Timestamp: date},
	})
	if err != nil {
		fmt.Println("[recommend] ======>>> " + err.Error())
		return
	}

	fmt.Printf("[recommend] ======>>> %dfeedback success\n", aff)
}

func GetRecommend(uid uint, cnt int) (goods []string, err error) {
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
	defer cancel()
	category, err := gorse.GetItemRecommendWithCategory(ctx, fmt.Sprintf("%d", uid), "", "", "", 0, cnt)
	return category, err
}

func NewUser(uid uint) {
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
	defer cancel()
	_, err := gorse.InsertUser(ctx, client.User{UserId: fmt.Sprintf("%d", uid)})
	if err != nil {
		fmt.Println("[recommend] ======>>> " + err.Error())
		return
	}
	fmt.Println("[recommend] ======>>> user added")
}

func NewItem(id uint, t uint, title string, desc string) {
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
	defer cancel()
	_, err := gorse.InsertItem(ctx, client.Item{
		ItemId:     fmt.Sprintf("%d", id),
		IsHidden:   false,
		Labels:     []string{title},
		Categories: nil,
		Timestamp:  GetTime(t),
		Comment:    desc,
	})
	if err != nil {
		fmt.Println("[recommend] ======>>> " + err.Error())
		return
	}
	fmt.Println("[recommend] ======>>> item added")
}

func DelItem(id uint) {
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
	defer cancel()
	_, err := gorse.DeleteItem(ctx, fmt.Sprintf("%d", id))
	if err != nil {
		fmt.Println("[recommend] ======>>> " + err.Error())
		return
	}
	fmt.Println("[recommend] ======>>> item deleted")
}