package payment

import (
	"SciencesServer/app/api/website/model"
	model2 "SciencesServer/app/common/model"
	"gorm.io/gorm"
)

type Activity struct {
	uid, activityID uint64
	identity        int
}

type ActivityCallback func(uid, activityID uint64, identity int) *Activity

func (c *Activity) grant(tx *gorm.DB) error {
	var count int64

	mActivityJoin := model.NewActivityJoin()

	err := model2.Count(mActivityJoin.ActivityJoin, &count, model2.NewWhere("uid", c.uid),
		model2.NewWhere("activity_id", c.activityID),
		model2.NewWhere("identity", c.identity),
		model2.NewWhere("status", model2.ActivityJoinStatusForSuccess))

	if err != nil {
		return err
	} else if count > 0 {
		return nil
	}
	mActivityJoin.UID = c.uid
	mActivityJoin.ActivityID = c.activityID
	mActivityJoin.Identity = c.identity
	mActivityJoin.Status = model2.ActivityJoinStatusForSuccess
	return model2.Create(mActivityJoin.ActivityJoin, tx)
}

func NewActivity() ActivityCallback {
	return func(uid, activityID uint64, identity int) *Activity {
		return &Activity{
			uid:        uid,
			activityID: activityID,
			identity:   identity,
		}
	}
}