1 files changed, 97 insertions, 0 deletions
diff --git a/models/user/user_system.go b/models/user/user_system.go
new file mode 100644
index 0000000..ba9a213
--- /dev/null
+++ b/models/user/user_system.go
@@ -0,0 +1,97 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"net/url"
+	"strings"
+
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/structs"
+)
+
+const (
+	GhostUserID        = -1
+	GhostUserName      = "Ghost"
+	GhostUserLowerName = "ghost"
+)
+
+// NewGhostUser creates and returns a fake user for someone has deleted their account.
+func NewGhostUser() *User {
+	return &User{
+		ID:        GhostUserID,
+		Name:      GhostUserName,
+		LowerName: GhostUserLowerName,
+	}
+}
+
+// IsGhost check if user is fake user for a deleted account
+func (u *User) IsGhost() bool {
+	if u == nil {
+		return false
+	}
+	return u.ID == GhostUserID && u.Name == GhostUserName
+}
+
+// NewReplaceUser creates and returns a fake user for external user
+func NewReplaceUser(name string) *User {
+	return &User{
+		ID:        0,
+		Name:      name,
+		LowerName: strings.ToLower(name),
+	}
+}
+
+const (
+	ActionsUserID   = -2
+	ActionsUserName = "forgejo-actions"
+	ActionsFullName = "Forgejo Actions"
+	ActionsEmail    = "noreply@forgejo.org"
+)
+
+// NewActionsUser creates and returns a fake user for running the actions.
+func NewActionsUser() *User {
+	return &User{
+		ID:                      ActionsUserID,
+		Name:                    ActionsUserName,
+		LowerName:               ActionsUserName,
+		IsActive:                true,
+		FullName:                ActionsFullName,
+		Email:                   ActionsEmail,
+		KeepEmailPrivate:        true,
+		LoginName:               ActionsUserName,
+		Type:                    UserTypeIndividual,
+		AllowCreateOrganization: true,
+		Visibility:              structs.VisibleTypePublic,
+	}
+}
+
+func (u *User) IsActions() bool {
+	return u != nil && u.ID == ActionsUserID
+}
+
+const (
+	APActorUserID   = -3
+	APActorUserName = "actor"
+	APActorEmail    = "noreply@forgejo.org"
+)
+
+func NewAPActorUser() *User {
+	return &User{
+		ID:               APActorUserID,
+		Name:             APActorUserName,
+		LowerName:        APActorUserName,
+		IsActive:         true,
+		Email:            APActorEmail,
+		KeepEmailPrivate: true,
+		LoginName:        APActorUserName,
+		Type:             UserTypeIndividual,
+		Visibility:       structs.VisibleTypePublic,
+	}
+}
+
+func APActorUserAPActorID() string {
+	path, _ := url.JoinPath(setting.AppURL, "/api/v1/activitypub/actor")
+	return path
+}