[shotwell: 1/4] split uploads into batches of 50

[Jens Georg <jensgeorg src gnome org>]

commit a63753cf321d74d7393b74430060219a8720813d
Author: Phred <fearphage gmail com>
Date:   Wed Jun 23 13:04:57 2021 -0500

    split uploads into batches of 50

 plugins/shotwell-publishing/PhotosPublisher.vala | 50 +++++++++++++++---------
 1 file changed, 31 insertions(+), 19 deletions(-)
---
diff --git a/plugins/shotwell-publishing/PhotosPublisher.vala 
b/plugins/shotwell-publishing/PhotosPublisher.vala
index 5f464700..8c4e6e7b 100644
--- a/plugins/shotwell-publishing/PhotosPublisher.vala
+++ b/plugins/shotwell-publishing/PhotosPublisher.vala
@@ -7,6 +7,7 @@
 
 namespace Publishing.GooglePhotos {
 internal const string DEFAULT_ALBUM_NAME = N_("Shotwell Connect");
+internal const int MAX_BATCH_SIZE = 50;
 
 internal class Album {
     public string name;
@@ -127,28 +128,39 @@ private class MediaCreationTransaction : Publishing.RESTSupport.GooglePublisher.
     }
 
     public override void execute () throws Spit.Publishing.PublishingError {
-        var builder = new Json.Builder();
-        builder.begin_object();
-        builder.set_member_name("albumId");
-        builder.add_string_value(this.album_id);
-        builder.set_member_name("newMediaItems");
-        builder.begin_array();
-        for (var i = 0; i < this.upload_tokens.length; i++) {
-            builder.begin_object();
-            builder.set_member_name("description");
-            builder.add_string_value(this.titles[i]);
-            builder.set_member_name("simpleMediaItem");
+        for (var h = 0; h * MAX_BATCH_SIZE < this.upload_tokens.length; h++) {
+            var offset = h * MAX_BATCH_SIZE;
+            var difference = this.upload_tokens.length - offset;
+            if (difference > MAX_BATCH_SIZE) {
+                end = offset + MAX_BATCH_SIZE;
+            }
+            else {
+                end = offset + difference;
+            }
+
+            var builder = new Json.Builder();
             builder.begin_object();
-            builder.set_member_name("uploadToken");
-            builder.add_string_value(this.upload_tokens[i]);
-            builder.end_object();
+            builder.set_member_name("albumId");
+            builder.add_string_value(this.album_id);
+            builder.set_member_name("newMediaItems");
+            builder.begin_array();
+            for (var i = offset; i < end; i++) {
+                builder.begin_object();
+                builder.set_member_name("description");
+                builder.add_string_value(this.titles[i]);
+                builder.set_member_name("simpleMediaItem");
+                builder.begin_object();
+                builder.set_member_name("uploadToken");
+                builder.add_string_value(this.upload_tokens[i]);
+                builder.end_object();
+                builder.end_object();
+            }
+            builder.end_array();
             builder.end_object();
-        }
-        builder.end_array();
-        builder.end_object();
-        set_custom_payload(Json.to_string (builder.get_root (), false), "application/json");
+            set_custom_payload(Json.to_string (builder.get_root (), false), "application/json");
 
-        base.execute();
+            base.execute();
+        }
     }
 }