[MM-53454] Add export file settings + slash command for public link (#23915)

Co-authored-by: Mattermost Build <build@mattermost.com>

server/cmd/mmctl/client/client.go

@@ -146,5 +146,6 @@ type Client interface {
 	ListExports(ctx context.Context) ([]string, *model.Response, error)
 	DeleteExport(ctx context.Context, name string) (*model.Response, error)
 	DownloadExport(ctx context.Context, name string, wr io.Writer, offset int64) (int64, *model.Response, error)
+	GeneratePresignedURL(ctx context.Context, name string) (*model.PresignURLResponse, *model.Response, error)
 	ResetSamlAuthDataToEmail(ctx context.Context, includeDeleted bool, dryRun bool, userIDs []string) (int64, *model.Response, error)
 }

server/cmd/mmctl/commands/export.go

@@ -40,6 +40,13 @@ var ExportDownloadCmd = &cobra.Command{
 	RunE: withClient(exportDownloadCmdF),
 }
 
+var ExportGeneratePresignedURLCmd = &cobra.Command{
+	Use:   "generate-presigned-url [exportname]",
+	Short: "Generate a presigned url for an export file. This is helpful when an export is big and might have trouble downloading from the Mattermost server.",
+	Args:  cobra.ExactArgs(1),
+	RunE:  withClient(exportGeneratePresignedURLCmdF),
+}
+
 var ExportDeleteCmd = &cobra.Command{
 	Use:     "delete [exportname]",
 	Aliases: []string{"rm"},
@@ -115,6 +122,7 @@ func init() {
 		ExportListCmd,
 		ExportDeleteCmd,
 		ExportDownloadCmd,
+		ExportGeneratePresignedURLCmd,
 		ExportJobCmd,
 	)
 	RootCmd.AddCommand(ExportCmd)
@@ -171,6 +179,22 @@ func exportDeleteCmdF(c client.Client, command *cobra.Command, args []string) er
 	return nil
 }
 
+func exportGeneratePresignedURLCmdF(c client.Client, command *cobra.Command, args []string) error {
+	name := args[0]
+
+	presignedURL, _, err := c.GeneratePresignedURL(context.TODO(), name)
+	if err != nil {
+		return fmt.Errorf("failed to generate export link: %w", err)
+	}
+
+	printer.PrintT("Export link: {{.Link}}\nExpiration: {{.Expiration}}", map[string]interface{}{
+		"Link":       presignedURL.URL,
+		"Expiration": presignedURL.Expiration.String(),
+	})
+
+	return nil
+}
+
 func exportDownloadCmdF(c client.Client, command *cobra.Command, args []string) error {
 	var path string
 	name := args[0]

server/cmd/mmctl/docs/mmctl_export.rst

@@ -40,6 +40,7 @@ SEE ALSO
 * `mmctl export create <mmctl_export_create.rst>`_ 	 - Create export file
 * `mmctl export delete <mmctl_export_delete.rst>`_ 	 - Delete export file
 * `mmctl export download <mmctl_export_download.rst>`_ 	 - Download export files
+* `mmctl export generate-presigned-url <mmctl_export_generate-presigned-url.rst>`_ 	 - Generate a presigned url for an export file. This is helpful when an export is big and might have trouble downloading from the Mattermost server.
 * `mmctl export job <mmctl_export_job.rst>`_ 	 - List, show and cancel export jobs
 * `mmctl export list <mmctl_export_list.rst>`_ 	 - List export files
 

server/cmd/mmctl/docs/mmctl_export_generate-presigned-url.rst

@@ -0,0 +1,44 @@
+.. _mmctl_export_generate-presigned-url:
+
+mmctl export generate-presigned-url
+-----------------------------------
+
+Generate a presigned url for an export file. This is helpful when an export is big and might have trouble downloading from the Mattermost server.
+
+Synopsis
+~~~~~~~~
+
+
+Generate a presigned url for an export file. This is helpful when an export is big and might have trouble downloading from the Mattermost server.
+
+::
+
+  mmctl export generate-presigned-url [exportname] [flags]
+
+Options
+~~~~~~~
+
+::
+
+  -h, --help   help for generate-presigned-url
+
+Options inherited from parent commands
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+::
+
+      --config string                path to the configuration file (default "$XDG_CONFIG_HOME/mmctl/config")
+      --disable-pager                disables paged output
+      --insecure-sha1-intermediate   allows to use insecure TLS protocols, such as SHA-1
+      --insecure-tls-version         allows to use TLS versions 1.0 and 1.1
+      --json                         the output format will be in json format
+      --local                        allows communicating with the server through a unix socket
+      --quiet                        prevent mmctl to generate output for the commands
+      --strict                       will only run commands if the mmctl version matches the server one
+      --suppress-warnings            disables printing warning messages
+
+SEE ALSO
+~~~~~~~~
+
+* `mmctl export <mmctl_export.rst>`_ 	 - Management of exports
+

server/cmd/mmctl/mocks/client_mock.go

@@ -525,6 +525,22 @@ func (mr *MockClientMockRecorder) EnablePlugin(arg0, arg1 interface{}) *gomock.C
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "EnablePlugin", reflect.TypeOf((*MockClient)(nil).EnablePlugin), arg0, arg1)
 }
 
+// GeneratePresignedURL mocks base method.
+func (m *MockClient) GeneratePresignedURL(arg0 context.Context, arg1 string) (*model.PresignURLResponse, *model.Response, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GeneratePresignedURL", arg0, arg1)
+	ret0, _ := ret[0].(*model.PresignURLResponse)
+	ret1, _ := ret[1].(*model.Response)
+	ret2, _ := ret[2].(error)
+	return ret0, ret1, ret2
+}
+
+// GeneratePresignedURL indicates an expected call of GeneratePresignedURL.
+func (mr *MockClientMockRecorder) GeneratePresignedURL(arg0, arg1 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GeneratePresignedURL", reflect.TypeOf((*MockClient)(nil).GeneratePresignedURL), arg0, arg1)
+}
+
 // GetAllTeams mocks base method.
 func (m *MockClient) GetAllTeams(arg0 context.Context, arg1 string, arg2, arg3 int) ([]*model.Team, *model.Response, error) {
 	m.ctrl.T.Helper()