MM-17912: Allow searching for files through plugin API (#13647)

* constants and options for getting files

* Method to get files with options

* Add i18n strings for en

* Add API methods for getting files with options

* gofmt -s file

* explicitly set create at in tests

* use greater than nanosecond time difference for tests

* use gte instead of gt for getting files by created time

* use created at time as default sort order for getting file infos

* use explicit inline strings instead of format strings

* join tables only when required

* use if as secondary sort, and update tests

* update field docs to reflect previous changes

* make page and perPage get options as required

* add json struct tags to GetFileOptions

* bump minimum server versioni

* remove sorting by username and channelname

* use bool for sort order type

* use FileInfo prefix instead of just File

* clearer comments

* use zero-based page numbering

* test filtering by user and channel

* remove unnecessary whitespace

* use int instead of uint for page and perPage arguments

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

plugin/client_rpc_generated.go

@@ -3320,6 +3320,37 @@ func (s *apiRPCServer) GetFileInfo(args *Z_GetFileInfoArgs, returns *Z_GetFileIn
 	return nil
 }
 
+type Z_GetFileInfosArgs struct {
+	A int
+	B int
+	C *model.GetFileInfosOptions
+}
+
+type Z_GetFileInfosReturns struct {
+	A []*model.FileInfo
+	B *model.AppError
+}
+
+func (g *apiRPCClient) GetFileInfos(page, perPage int, opt *model.GetFileInfosOptions) ([]*model.FileInfo, *model.AppError) {
+	_args := &Z_GetFileInfosArgs{page, perPage, opt}
+	_returns := &Z_GetFileInfosReturns{}
+	if err := g.client.Call("Plugin.GetFileInfos", _args, _returns); err != nil {
+		log.Printf("RPC call to GetFileInfos API failed: %s", err.Error())
+	}
+	return _returns.A, _returns.B
+}
+
+func (s *apiRPCServer) GetFileInfos(args *Z_GetFileInfosArgs, returns *Z_GetFileInfosReturns) error {
+	if hook, ok := s.impl.(interface {
+		GetFileInfos(page, perPage int, opt *model.GetFileInfosOptions) ([]*model.FileInfo, *model.AppError)
+	}); ok {
+		returns.A, returns.B = hook.GetFileInfos(args.A, args.B, args.C)
+	} else {
+		return encodableError(fmt.Errorf("API GetFileInfos called but not implemented."))
+	}
+	return nil
+}
+
 type Z_GetFileArgs struct {
 	A string
 }