Move user follow and openid into models/user/ (#17613)

* Move UserRedirect into models/user/

* Fix lint & test

* Fix lint

* Fix lint

* remove nolint comment

* Fix lint

* Move user follow and openid into models/user

* Ignore the lint

* Ignore the lint

* Fix test

* ignore stutters lint on UserOpenID

models/user/openid.go

@@ -0,0 +1,112 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package user
+
+import (
+	"errors"
+	"fmt"
+
+	"code.gitea.io/gitea/models/db"
+)
+
+// ErrOpenIDNotExist openid is not known
+var ErrOpenIDNotExist = errors.New("OpenID is unknown")
+
+// UserOpenID is the list of all OpenID identities of a user.
+// Since this is a middle table, name it OpenID is not suitable, so we ignore the lint here
+type UserOpenID struct { //revive:disable-line:exported
+	ID   int64  `xorm:"pk autoincr"`
+	UID  int64  `xorm:"INDEX NOT NULL"`
+	URI  string `xorm:"UNIQUE NOT NULL"`
+	Show bool   `xorm:"DEFAULT false"`
+}
+
+func init() {
+	db.RegisterModel(new(UserOpenID))
+}
+
+// GetUserOpenIDs returns all openid addresses that belongs to given user.
+func GetUserOpenIDs(uid int64) ([]*UserOpenID, error) {
+	openids := make([]*UserOpenID, 0, 5)
+	if err := db.GetEngine(db.DefaultContext).
+		Where("uid=?", uid).
+		Asc("id").
+		Find(&openids); err != nil {
+		return nil, err
+	}
+
+	return openids, nil
+}
+
+// isOpenIDUsed returns true if the openid has been used.
+func isOpenIDUsed(e db.Engine, uri string) (bool, error) {
+	if len(uri) == 0 {
+		return true, nil
+	}
+
+	return e.Get(&UserOpenID{URI: uri})
+}
+
+// ErrOpenIDAlreadyUsed represents a "OpenIDAlreadyUsed" kind of error.
+type ErrOpenIDAlreadyUsed struct {
+	OpenID string
+}
+
+// IsErrOpenIDAlreadyUsed checks if an error is a ErrOpenIDAlreadyUsed.
+func IsErrOpenIDAlreadyUsed(err error) bool {
+	_, ok := err.(ErrOpenIDAlreadyUsed)
+	return ok
+}
+
+func (err ErrOpenIDAlreadyUsed) Error() string {
+	return fmt.Sprintf("OpenID already in use [oid: %s]", err.OpenID)
+}
+
+// NOTE: make sure openid.URI is normalized already
+func addUserOpenID(e db.Engine, openid *UserOpenID) error {
+	used, err := isOpenIDUsed(e, openid.URI)
+	if err != nil {
+		return err
+	} else if used {
+		return ErrOpenIDAlreadyUsed{openid.URI}
+	}
+
+	_, err = e.Insert(openid)
+	return err
+}
+
+// AddUserOpenID adds an pre-verified/normalized OpenID URI to given user.
+func AddUserOpenID(openid *UserOpenID) error {
+	return addUserOpenID(db.GetEngine(db.DefaultContext), openid)
+}
+
+// DeleteUserOpenID deletes an openid address of given user.
+func DeleteUserOpenID(openid *UserOpenID) (err error) {
+	var deleted int64
+	// ask to check UID
+	address := UserOpenID{
+		UID: openid.UID,
+	}
+	if openid.ID > 0 {
+		deleted, err = db.GetEngine(db.DefaultContext).ID(openid.ID).Delete(&address)
+	} else {
+		deleted, err = db.GetEngine(db.DefaultContext).
+			Where("openid=?", openid.URI).
+			Delete(&address)
+	}
+
+	if err != nil {
+		return err
+	} else if deleted != 1 {
+		return ErrOpenIDNotExist
+	}
+	return nil
+}
+
+// ToggleUserOpenIDVisibility toggles visibility of an openid address of given user.
+func ToggleUserOpenIDVisibility(id int64) (err error) {
+	_, err = db.GetEngine(db.DefaultContext).Exec("update `user_open_id` set `show` = not `show` where `id` = ?", id)
+	return err
+}