Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/app/remote_cluster.go

@@ -0,0 +1,87 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package app
+
+import (
+	"net/http"
+
+	"github.com/pkg/errors"
+
+	"github.com/mattermost/mattermost-server/v6/server/channels/store/sqlstore"
+	"github.com/mattermost/mattermost-server/v6/server/platform/services/remotecluster"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+)
+
+func (a *App) AddRemoteCluster(rc *model.RemoteCluster) (*model.RemoteCluster, *model.AppError) {
+	rc, err := a.Srv().Store().RemoteCluster().Save(rc)
+	if err != nil {
+		if sqlstore.IsUniqueConstraintError(errors.Cause(err), []string{sqlstore.RemoteClusterSiteURLUniqueIndex}) {
+			return nil, model.NewAppError("AddRemoteCluster", "api.remote_cluster.save_not_unique.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+		}
+
+		return nil, model.NewAppError("AddRemoteCluster", "api.remote_cluster.save.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return rc, nil
+}
+
+func (a *App) UpdateRemoteCluster(rc *model.RemoteCluster) (*model.RemoteCluster, *model.AppError) {
+	rc, err := a.Srv().Store().RemoteCluster().Update(rc)
+	if err != nil {
+		if sqlstore.IsUniqueConstraintError(errors.Cause(err), []string{sqlstore.RemoteClusterSiteURLUniqueIndex}) {
+			return nil, model.NewAppError("UpdateRemoteCluster", "api.remote_cluster.update_not_unique.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+		}
+
+		return nil, model.NewAppError("UpdateRemoteCluster", "api.remote_cluster.update.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return rc, nil
+}
+
+func (a *App) DeleteRemoteCluster(remoteClusterId string) (bool, *model.AppError) {
+	deleted, err := a.Srv().Store().RemoteCluster().Delete(remoteClusterId)
+	if err != nil {
+		return false, model.NewAppError("DeleteRemoteCluster", "api.remote_cluster.delete.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return deleted, nil
+}
+
+func (a *App) GetRemoteCluster(remoteClusterId string) (*model.RemoteCluster, *model.AppError) {
+	rc, err := a.Srv().Store().RemoteCluster().Get(remoteClusterId)
+	if err != nil {
+		return nil, model.NewAppError("GetRemoteCluster", "api.remote_cluster.get.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return rc, nil
+}
+
+func (a *App) GetAllRemoteClusters(filter model.RemoteClusterQueryFilter) ([]*model.RemoteCluster, *model.AppError) {
+	list, err := a.Srv().Store().RemoteCluster().GetAll(filter)
+	if err != nil {
+		return nil, model.NewAppError("GetAllRemoteClusters", "api.remote_cluster.get.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return list, nil
+}
+
+func (a *App) UpdateRemoteClusterTopics(remoteClusterId string, topics string) (*model.RemoteCluster, *model.AppError) {
+	rc, err := a.Srv().Store().RemoteCluster().UpdateTopics(remoteClusterId, topics)
+	if err != nil {
+		return nil, model.NewAppError("UpdateRemoteClusterTopics", "api.remote_cluster.save.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return rc, nil
+}
+
+func (a *App) SetRemoteClusterLastPingAt(remoteClusterId string) *model.AppError {
+	err := a.Srv().Store().RemoteCluster().SetLastPingAt(remoteClusterId)
+	if err != nil {
+		return model.NewAppError("SetRemoteClusterLastPingAt", "api.remote_cluster.save.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return nil
+}
+
+func (a *App) GetRemoteClusterService() (remotecluster.RemoteClusterServiceIFace, *model.AppError) {
+	service := a.Srv().GetRemoteClusterService()
+	if service == nil {
+		return nil, model.NewAppError("GetRemoteClusterService", "api.remote_cluster.service_not_enabled.app_error", nil, "", http.StatusNotImplemented)
+	}
+	return service, nil
+}