From c255891ef2b0b3eb91e414a926e1553099fe90d4 Mon Sep 17 00:00:00 2001
From: Aaron Rolett <aaron.rolett@gmail.com>
Date: Thu, 11 Dec 2014 19:29:49 -0800
Subject: [PATCH] Add support for file request paging to Remote::FindParentById

While issuing pull requests on a few of my directories I noticed that
I was missing files. Implement paging so pull requests on directories
that have more than 100 files work.
---
 changes.go |  2 +-
 remote.go  | 36 +++++++++++++++++++++++-------------
 2 files changed, 24 insertions(+), 14 deletions(-)

diff --git a/changes.go b/changes.go
index e57ffcde..588fbd4c 100644
--- a/changes.go
+++ b/changes.go
@@ -67,7 +67,7 @@ func (g *Commands) resolveChangeListRecv(
 
 	var remoteChildren []*File
 	if r != nil {
-		if remoteChildren, err = g.rem.FindByParentId(r.Id); err != nil {
+		if remoteChildren, err = g.rem.FindByParentID(r.Id, g.opts.Hidden); err != nil {
 			return
 		}
 	}
diff --git a/remote.go b/remote.go
index 8b4d6ce9..6f9a7fad 100644
--- a/remote.go
+++ b/remote.go
@@ -89,21 +89,31 @@ func (r *Remote) FindByPath(p string) (file *File, err error) {
 	return r.findByPathRecv("root", parts[1:])
 }
 
-func (r *Remote) FindByParentId(parentId string) (files []*File, err error) {
-	req := r.service.Files.List()
-	// TODO: use field selectors
-	req.Q(fmt.Sprintf("'%s' in parents and trashed=false", parentId))
-	results, err := req.Do()
-	// TODO: handle paging
-	if err != nil {
-		return
-	}
-	for _, f := range results.Items {
-		if !strings.HasPrefix(f.Title, ".") { // ignore hidden files
-			files = append(files, NewRemoteFile(f))
+func (r *Remote) FindByParentID(parentID string, hidden bool) ([]*File, error) {
+
+	pageToken := ""
+	var files []*File
+	for {
+		req := r.service.Files.List()
+		// TODO: use field selectors
+		req.Q(fmt.Sprintf("'%s' in parents and trashed=false", parentID))
+		if pageToken != "" {
+			req.PageToken(pageToken)
+		}
+		results, err := req.Do()
+		if err != nil {
+			return files, err
+		}
+		for _, f := range results.Items {
+			if hidden || !strings.HasPrefix(f.Title, ".") { // ignore hidden files
+				files = append(files, NewRemoteFile(f))
+			}
+		}
+		pageToken = results.NextPageToken
+		if pageToken == "" {
+			return files, err
 		}
 	}
-	return
 }
 
 func (r *Remote) Trash(id string) error {