fusenapi/utils/auth/confirmation_link.go
2023-09-04 01:40:28 +08:00

101 lines
2.2 KiB
Go

package auth
import (
"fmt"
"fusenapi/utils/encryption_decryption"
"net/url"
"reflect"
)
type OperateType string
const (
OpTypeRegister OperateType = "1" //注册的操作类型
OpTypeResetToken OperateType = "2" //重置密码类型
)
type ConfirmationLink[T any] struct {
// Secret []byte
secretGCM *encryption_decryption.SecretGCM[T]
defaultTokenKey string // 默认key 是 token
defaultOpTypeKey string
link *url.URL
}
func NewConfirmationLink[T any](key string, UrlStr string) *ConfirmationLink[T] {
u, err := url.Parse(UrlStr)
if err != nil {
panic(err)
}
return &ConfirmationLink[T]{
secretGCM: encryption_decryption.NewSecretGCM[T](key),
defaultTokenKey: "token",
defaultOpTypeKey: "optype",
link: u,
}
}
// WithDefaultTokenKey 设置默认Token Key
func (cl *ConfirmationLink[T]) WithDefaultTokenKey(tkey string) *ConfirmationLink[T] {
cl.defaultTokenKey = tkey
return cl
}
// WithDefaultOpTypeKey 设置默认OpType Key
func (cl *ConfirmationLink[T]) WithDefaultOpTypeKey(opkey string) *ConfirmationLink[T] {
cl.defaultTokenKey = opkey
return cl
}
// Generate 序列化链接传入需求的obj
func (cl *ConfirmationLink[T]) Generate(obj *T) (string, error) {
vValue := reflect.ValueOf(obj).Elem()
opType := vValue.FieldByName("OperateType")
if !opType.IsValid() {
return "", fmt.Errorf("传入结构体 必须继承 OperateType")
}
op := opType.Interface().(OperateType)
token, err := cl.Encrypt(obj)
if err != nil {
return "", err
}
return cl.generateWithToken(token, op)
}
// generateWithToken 序列化url带token
func (cl *ConfirmationLink[T]) generateWithToken(token string, optype OperateType) (string, error) {
q := cl.link.Query()
if q.Has(cl.defaultTokenKey) {
q.Set(cl.defaultTokenKey, token)
} else {
q.Add(cl.defaultTokenKey, token)
}
if q.Has(cl.defaultOpTypeKey) {
q.Set(cl.defaultOpTypeKey, string(optype))
} else {
q.Add(cl.defaultOpTypeKey, string(optype))
}
// 生成确认链接
cl.link.RawQuery = q.Encode()
return cl.link.String(), nil
}
func (cl *ConfirmationLink[T]) Encrypt(obj *T) (string, error) {
return cl.secretGCM.Encrypt(obj)
}
func (cl *ConfirmationLink[T]) Decrypt(ciphertext string) (*T, error) {
return cl.secretGCM.Decrypt(ciphertext)
}