feat(oauth): 支持linux.do登录 (#280)

* 支持linux.do登录

* 修正

model/oauth.go

@@ -14,6 +14,7 @@ const (
 	OauthTypeGoogle  string = "google"
 	OauthTypeOidc    string = "oidc"
 	OauthTypeWebauth string = "webauth"
+	OauthTypeLinuxdo string = "linuxdo"
 	PKCEMethodS256   string = "S256"
 	PKCEMethodPlain  string = "plain"
 )
@@ -21,7 +22,7 @@ const (
 // Validate the oauth type
 func ValidateOauthType(oauthType string) error {
 	switch oauthType {
-	case OauthTypeGithub, OauthTypeGoogle, OauthTypeOidc, OauthTypeWebauth:
+	case OauthTypeGithub, OauthTypeGoogle, OauthTypeOidc, OauthTypeWebauth, OauthTypeLinuxdo:
 		return nil
 	default:
 		return errors.New("invalid Oauth type")
@@ -30,6 +31,7 @@ func ValidateOauthType(oauthType string) error {
 
 const (
 	UserEndpointGithub string = "https://api.github.com/user"
+	UserEndpointLinuxdo string = "https://connect.linux.do/api/user"
 	IssuerGoogle       string = "https://accounts.google.com"
 )
 
@@ -60,6 +62,8 @@ func (oa *Oauth) FormatOauthInfo() error {
 		oa.Op = OauthTypeGithub
 	case OauthTypeGoogle:
 		oa.Op = OauthTypeGoogle
+	case OauthTypeLinuxdo:
+		oa.Op = OauthTypeLinuxdo
 	}
 	// check if the op is empty, set the default value
 	op := strings.TrimSpace(oa.Op)
@@ -152,6 +156,24 @@ func (gu *GithubUser) ToOauthUser() *OauthUser {
 	}
 }
 
+type LinuxdoUser struct {
+	OauthUserBase
+	Id       int    `json:"id"`
+	Username string `json:"username"`
+	Avatar   string `json:"avatar_url"`
+}
+
+func (lu *LinuxdoUser) ToOauthUser() *OauthUser {
+	return &OauthUser{
+		OpenId:        strconv.Itoa(lu.Id),
+		Name:          lu.Name,
+		Username:      strings.ToLower(lu.Username),
+		Email:         lu.Email,
+		VerifiedEmail: true, // linux.do 用户邮箱默认已验证
+		Picture:       lu.Avatar,
+	}
+}
+
 type OauthList struct {
 	Oauths []*Oauth `json:"list"`
 	Pagination