From b41c5eb05d8b7e4cadd5a6dc3811a7aaa088780a Mon Sep 17 00:00:00 2001
From: abraunegg <alex.braunegg@gmail.com>
Date: Wed, 17 Jul 2019 05:11:38 +1000
Subject: [PATCH] Update Sharepoint modified file handling for files > 4Mb in
 size (#594)

* Update Sharepoint modified file handling for files > 4Mb in size
---
 src/sync.d | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/sync.d b/src/sync.d
index 4b10cb36..e2ecc919 100644
--- a/src/sync.d
+++ b/src/sync.d
@@ -2296,8 +2296,22 @@ final class SyncEngine
 										
 										// OneDrive SharePoint account modified file upload handling
 										if (accountType == "documentLibrary"){
-											// We cant use a session to upload the file, we have to use simpleUploadReplace
-											response = onedrive.simpleUploadReplace(path, fileDetailsFromOneDrive["parentReference"]["driveId"].str, fileDetailsFromOneDrive["id"].str, fileDetailsFromOneDrive["eTag"].str);
+											// Depending on the file size, this will depend on how best to handle the modified local file
+											// as if too large, the following error will be generated by OneDrive:
+											//     HTTP request returned status code 413 (Request Entity Too Large)
+											// We also cant use a session to upload the file, we have to use simpleUploadReplace
+											
+											if (getSize(path) <= thresholdFileSize) {
+												// Upload file via simpleUploadReplace as below threshhold size
+												response = onedrive.simpleUploadReplace(path, fileDetailsFromOneDrive["parentReference"]["driveId"].str, fileDetailsFromOneDrive["id"].str, fileDetailsFromOneDrive["eTag"].str);
+											} else {
+												// Have to upload via a session, however we have to delete the file first otherwise this will generate a 404 error post session upload
+												// Remove the existing file
+												onedrive.deleteById(fileDetailsFromOneDrive["parentReference"]["driveId"].str, fileDetailsFromOneDrive["id"].str, fileDetailsFromOneDrive["eTag"].str);	
+												// Upload as a session, as a new file
+												writeln("");
+												response = session.upload(path, parent.driveId, parent.id, baseName(path));
+											}
 											writeln(" done.");
 											saveItem(response);
 											// Due to https://github.com/OneDrive/onedrive-api-docs/issues/935 Microsoft modifies all PDF, MS Office & HTML files with added XML content. It is a 'feature' of SharePoint.