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package data
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import (
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"context"
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"customer/internal/biz"
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"database/sql"
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"fmt"
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"github.com/go-kratos/kratos/v2/errors"
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"github.com/golang-jwt/jwt/v4"
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"gorm.io/gorm"
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"time"
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)
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// customer 中与数据操作相关的代码
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type CustomerData struct {
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data *Data
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}
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// New 方法
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func NewCustomerData(data *Data) *CustomerData {
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return &CustomerData{data: data}
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}
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// 设置验证码的方法
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func (cd CustomerData) SetVerifyCode(telephone, code string, ex int64) error {
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// 设置key, customer-verify-code
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status := cd.data.Rdb.Set(context.Background(), "CVC:"+telephone, code, time.Duration(ex)*time.Second)
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if _, err := status.Result(); err != nil {
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return err
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}
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return nil
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}
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// 获取号码对应的验证码
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func (cd CustomerData) GetVerifyCode(telephone string) string {
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status := cd.data.Rdb.Get(context.Background(), "CVC:"+telephone)
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code, _ := status.Result() // status.String()
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return code
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}
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// 根据电话,获取顾客信息
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func (cd CustomerData) GetCustomerByTelephone(telephone string) (*biz.Customer, error) {
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// 查询基于电话
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customer := &biz.Customer{}
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result := cd.data.Mdb.Where("telephone=?", telephone).First(customer)
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// query 执行成功,同时查询到记录
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if result.Error == nil && customer.ID > 0 {
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return customer, nil
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}
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// 有记录不存在的错误
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if result.Error != nil && errors.Is(result.Error, gorm.ErrRecordNotFound) {
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// 创建customer并返回
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customer.Telephone = telephone
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customer.Name = sql.NullString{Valid: false}
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customer.Email = sql.NullString{Valid: false}
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customer.Wechat = sql.NullString{Valid: false}
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resultCreate := cd.data.Mdb.Create(customer)
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// 插入成功
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if resultCreate.Error != nil {
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return nil, resultCreate.Error
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} else {
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return customer, nil
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}
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}
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// 有错误,但是不是记录不存在的错误,不做业务逻辑处理
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return nil, result.Error
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}
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// 生成Token和存储
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func (cd CustomerData) GenerateTokenAndSave(c *biz.Customer, duration time.Duration, secret string) (string, error) {
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// 一,生成token
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// 处理token中的数据
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// 标准的 JWT 的 payload
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claims := jwt.RegisteredClaims{
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// 签发方,签发机构
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Issuer: "LaoMaDJ",
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// 说明
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Subject: "customer-authentication",
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// 签发给谁使用
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Audience: []string{"customer", "other"},
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// 有效期至
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(duration)),
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// 何时启用
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NotBefore: nil,
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// 签发时间
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IssuedAt: jwt.NewNumericDate(time.Now()),
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// ID, 用户的ID
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ID: fmt.Sprintf("%d", c.ID),
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}
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// 生成token
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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// 签名token
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signedToken, err := token.SignedString([]byte(secret))
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if err != nil {
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return "", err
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}
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// 二,存储
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c.Token = signedToken
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c.TokenCreatedAt = sql.NullTime{
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Time: time.Now(),
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Valid: true,
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}
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if result := cd.data.Mdb.Save(c); result.Error != nil {
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return "", result.Error
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}
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// 操作成功
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return signedToken, nil
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}
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// 利用顾客ID,获取对应的token
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func (cd CustomerData) GetToken(id interface{}) (string, error) {
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c := &biz.Customer{}
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if result := cd.data.Mdb.First(c, id); result.Error != nil {
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return "", result.Error
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}
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return c.Token, nil
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}
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// 利用顾客ID,删除对应的token
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func (cd CustomerData) DelToken(id interface{}) error {
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c := &biz.Customer{}
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// 找到customer
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if result := cd.data.Mdb.First(c, id); result.Error != nil {
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return result.Error
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}
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// 删除customer的token
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c.Token = ""
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c.TokenCreatedAt = sql.NullTime{Valid: false}
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cd.data.Mdb.Save(c)
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return nil
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}
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