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/jobs/export_delete/worker.go

@@ -0,0 +1,70 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package export_delete
+
+import (
+	"path/filepath"
+	"time"
+
+	"github.com/wiggin77/merror"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/jobs"
+	"github.com/mattermost/mattermost-server/v6/server/platform/services/configservice"
+	"github.com/mattermost/mattermost-server/v6/server/platform/shared/mlog"
+)
+
+const jobName = "ExportDelete"
+
+type AppIface interface {
+	configservice.ConfigService
+	ListDirectory(path string) ([]string, *model.AppError)
+	FileModTime(path string) (time.Time, *model.AppError)
+	RemoveFile(path string) *model.AppError
+}
+
+func MakeWorker(jobServer *jobs.JobServer, app AppIface) model.Worker {
+	isEnabled := func(cfg *model.Config) bool {
+		return *cfg.ExportSettings.Directory != "" && *cfg.ExportSettings.RetentionDays > 0
+	}
+	execute := func(job *model.Job) error {
+		defer jobServer.HandleJobPanic(job)
+
+		exportPath := *app.Config().ExportSettings.Directory
+		retentionTime := time.Duration(*app.Config().ExportSettings.RetentionDays) * 24 * time.Hour
+		exports, appErr := app.ListDirectory(exportPath)
+		if appErr != nil {
+			return appErr
+		}
+
+		errors := merror.New()
+		for i := range exports {
+			filename := filepath.Base(exports[i])
+			modTime, appErr := app.FileModTime(filepath.Join(exportPath, filename))
+			if appErr != nil {
+				mlog.Debug("Worker: Failed to get file modification time",
+					mlog.Err(appErr), mlog.String("export", exports[i]))
+				errors.Append(appErr)
+				continue
+			}
+
+			if time.Now().After(modTime.Add(retentionTime)) {
+				// remove file data from storage.
+				if appErr := app.RemoveFile(exports[i]); appErr != nil {
+					mlog.Debug("Worker: Failed to remove file",
+						mlog.Err(appErr), mlog.String("export", exports[i]))
+					errors.Append(appErr)
+					continue
+				}
+			}
+		}
+
+		if err := errors.ErrorOrNil(); err != nil {
+			mlog.Warn("Worker: errors occurred", mlog.String("job-name", jobName), mlog.Err(err))
+		}
+		return nil
+	}
+	worker := jobs.NewSimpleWorker(jobName, jobServer, execute, isEnabled)
+	return worker
+}