package friend

import (
	"gim/pkg/db"
	"gim/pkg/gerrors"

	"github.com/jinzhu/gorm"
)

type friendRepo struct{}

var FriendRepo = new(friendRepo)

// Get 获取好友
func (*friendRepo) Get(userId, friendId int64) (*Friend, error) {
	friend := Friend{}
	err := db.DB.First(&friend, "user_id = ? and friend_id = ?", userId, friendId).Error
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, err
	}
	if err == gorm.ErrRecordNotFound {
		return nil, nil
	}
	return &friend, nil
}

// Save 添加好友
func (*friendRepo) Save(friend *Friend) error {
	return gerrors.WrapError(db.DB.Save(&friend).Error)
}

// Delete 删除好友
func (*friendRepo) Delete(userId, friendId int64) (err error) {
	friend := Friend{}
	//1、正向删除自己这一方
	err = gerrors.WrapError(db.DB.Where("user_id = ? and friend_id = ?", userId, friendId).Delete(&friend).Error)
	if err != nil {
		return err
	}
	//2、反向删除好友这一方
	err = gerrors.WrapError(db.DB.Where("user_id = ? and friend_id = ?", friendId, userId).Delete(&friend).Error)
	if err != nil {
		return err
	}
	return nil
}

// List 获取好友列表
func (*friendRepo) List(userId int64, status int) ([]Friend, error) {
	var friends []Friend
	err := db.DB.Where("user_id = ? and status = ?", userId, status).Find(&friends).Error
	return friends, gerrors.WrapError(err)
}