Expose public/ API as submodule (#23345)

* model -> public/model

* plugin -> public/plugin

* public/model/utils -> public/utils

* platform/shared/mlog -> public/shared/mlog

* platform/shared/i18n -> public/shared/i18n

* platform/shared/markdown -> public/shared/markdown

* platform/services/timezones -> public/shared/timezones

* channels/einterfaces -> einterfaces

* expose public/ submodule

* go mod tidy

* .github: cache-dependency-path, setup-go-work

* modules-tidy for public/ too

* remove old gomodtidy

server/public/model/user_terms_of_service.go

@@ -0,0 +1,48 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"fmt"
+	"net/http"
+)
+
+type UserTermsOfService struct {
+	UserId           string `json:"user_id"`
+	TermsOfServiceId string `json:"terms_of_service_id"`
+	CreateAt         int64  `json:"create_at"`
+}
+
+func (ut *UserTermsOfService) IsValid() *AppError {
+	if !IsValidId(ut.UserId) {
+		return InvalidUserTermsOfServiceError("user_id", ut.UserId)
+	}
+
+	if !IsValidId(ut.TermsOfServiceId) {
+		return InvalidUserTermsOfServiceError("terms_of_service_id", ut.UserId)
+	}
+
+	if ut.CreateAt == 0 {
+		return InvalidUserTermsOfServiceError("create_at", ut.UserId)
+	}
+
+	return nil
+}
+
+func (ut *UserTermsOfService) PreSave() {
+	if ut.UserId == "" {
+		ut.UserId = NewId()
+	}
+
+	ut.CreateAt = GetMillis()
+}
+
+func InvalidUserTermsOfServiceError(fieldName string, userTermsOfServiceId string) *AppError {
+	id := fmt.Sprintf("model.user_terms_of_service.is_valid.%s.app_error", fieldName)
+	details := ""
+	if userTermsOfServiceId != "" {
+		details = "user_terms_of_service_user_id=" + userTermsOfServiceId
+	}
+	return NewAppError("UserTermsOfService.IsValid", id, nil, details, http.StatusBadRequest)
+}