package service

import (
	"91porn-server/common"
	"91porn-server/common/crypt"
)

func GetTFUrl(tf string) string {
	if tf != "" {
		type tfStc struct {
			Url  string `json:"url"`
			Name string `json:"name"`
		}
		var tfArr []tfStc
		_ = crypt.JSON2Struct(tf, &tfArr)
		if len(tfArr) == 0 {
			return tf
		}
		weight := 100 / len(tfArr)
		chioce := make([]common.Choice, len(tfArr))
		for i := range tfArr {
			chioce[i] = common.Choice{
				Weight: weight,
				Item:   tfArr[i].Url,
			}
		}
		ch, _ := common.WeightedChoice(chioce)
		if v, ok := ch.Item.(string); ok {
			return v
		}
	}
	return tf
}