Group incoming shares for resharing in JS

1 files changed, 28 insertions, 1 deletions

diff --git a/core/js/shareitemmodel.js b/core/js/shareitemmodel.js
index 8ea0bf28b38..00c1212fa79 100644
--- a/core/js/shareitemmodel.js
+++ b/core/js/shareitemmodel.js
@@ -598,6 +598,33 @@
 			}
 		},
 
+		/**
+		 * Group reshares into a single super share element.
+		 * Does this by finding the most precise share and
+		 * combines the permissions to be the most permissive.
+		 *
+		 * @param {Array} reshares
+		 * @return {Object} reshare
+		 */
+		_groupReshares: function(reshares) {
+			if (!reshares || !reshares.length) {
+				return false;
+			}
+
+			var superShare = reshares.shift();
+			var combinedPermissions = superShare.permissions;
+			_.each(reshares, function(reshare) {
+				// use share have higher priority than group share
+				if (reshare.share_type === OC.Share.SHARE_TYPE_USER && superShare.share_type === OC.Share.SHARE_TYPE_GROUP) {
+					superShare = reshare;
+				}
+				combinedPermissions |= reshare.permissions;
+			});
+
+			superShare.permissions = combinedPermissions;
+			return superShare;
+		},
+
 		fetch: function() {
 			var model = this;
 			this.trigger('request', this);
@@ -615,7 +642,7 @@
 
 				var reshare = false;
 				if (data2[0].ocs.data.length) {
-					reshare = data2[0].ocs.data[0];
+					reshare = model._groupReshares(data2[0].ocs.data);
 				}
 
 				model.set(model.parse({