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/api4/export.go

@@ -0,0 +1,86 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package api4
+
+import (
+	"encoding/json"
+	"net/http"
+	"path/filepath"
+	"time"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/audit"
+)
+
+func (api *API) InitExport() {
+	api.BaseRoutes.Exports.Handle("", api.APISessionRequired(listExports)).Methods("GET")
+	api.BaseRoutes.Export.Handle("", api.APISessionRequired(deleteExport)).Methods("DELETE")
+	api.BaseRoutes.Export.Handle("", api.APISessionRequired(downloadExport)).Methods("GET")
+}
+
+func listExports(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !c.IsSystemAdmin() {
+		c.SetPermissionError(model.PermissionManageSystem)
+		return
+	}
+
+	exports, appErr := c.App.ListExports()
+	if appErr != nil {
+		c.Err = appErr
+		return
+	}
+
+	data, err := json.Marshal(exports)
+	if err != nil {
+		c.Err = model.NewAppError("listImports", "app.export.marshal.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+		return
+	}
+
+	w.Write(data)
+}
+
+func deleteExport(c *Context, w http.ResponseWriter, r *http.Request) {
+	auditRec := c.MakeAuditRecord("deleteExport", audit.Fail)
+	defer c.LogAuditRec(auditRec)
+	audit.AddEventParameter(auditRec, "export_name", c.Params.ExportName)
+
+	if !c.IsSystemAdmin() {
+		c.SetPermissionError(model.PermissionManageSystem)
+		return
+	}
+
+	if err := c.App.DeleteExport(c.Params.ExportName); err != nil {
+		c.Err = err
+		return
+	}
+
+	auditRec.Success()
+	ReturnStatusOK(w)
+}
+
+func downloadExport(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !c.IsSystemAdmin() {
+		c.SetPermissionError(model.PermissionManageSystem)
+		return
+	}
+
+	filePath := filepath.Join(*c.App.Config().ExportSettings.Directory, c.Params.ExportName)
+	if ok, err := c.App.FileExists(filePath); err != nil {
+		c.Err = err
+		return
+	} else if !ok {
+		c.Err = model.NewAppError("downloadExport", "api.export.export_not_found.app_error", nil, "", http.StatusNotFound)
+		return
+	}
+
+	file, err := c.App.FileReader(filePath)
+	if err != nil {
+		c.Err = err
+		return
+	}
+	defer file.Close()
+
+	w.Header().Set("Content-Type", "application/zip")
+	http.ServeContent(w, r, c.Params.ExportName, time.Time{}, file)
+}