Add support for Gitlab individual review notifications (#736)

* Add support for individual reviews

* Document support + add frontend support

* changelog

* Remove redundant checks

changelog.d/736.feature

@@ -0,0 +1 @@
+Add support for notifying when a GitLab MR has a single review (rather than completed review).

docs/usage/room_configuration/gitlab_project.md

@@ -48,6 +48,7 @@ the events marked as default below will be enabled. Otherwise, this is ignored.
   - merge_request.open *
   - merge_request.review.comments *
   - merge_request.review *
+  - merge_request.review.individual
 - push *
 - release *
   - release.created *

src/Bridge.ts

@@ -365,6 +365,18 @@ export class Bridge {
             (c, data) => c.onMergeRequestReviewed(data),
         );
 
+        this.bindHandlerToQueue<IGitLabWebhookMREvent, GitLabRepoConnection>(
+            "gitlab.merge_request.approval",
+            (data) => connManager.getConnectionsForGitLabRepo(data.project.path_with_namespace),
+            (c, data) => c.onMergeRequestIndividualReview(data),
+        );
+
+        this.bindHandlerToQueue<IGitLabWebhookMREvent, GitLabRepoConnection>(
+            "gitlab.merge_request.unapproval",
+            (data) => connManager.getConnectionsForGitLabRepo(data.project.path_with_namespace),
+            (c, data) => c.onMergeRequestIndividualReview(data),
+        );
+
         this.bindHandlerToQueue<IGitLabWebhookMREvent, GitLabRepoConnection>(
             "gitlab.merge_request.update",
             (data) => connManager.getConnectionsForGitLabRepo(data.project.path_with_namespace),

src/Connections/GitlabRepo.ts

@@ -70,6 +70,7 @@ type AllowedEventsNames =
     "merge_request.close" |
     "merge_request.merge" |
     "merge_request.review" |
+    "merge_request.review.individual" |
     "merge_request.ready_for_review" |
     "merge_request.review.comments" |
     `merge_request.${string}` |
@@ -86,6 +87,7 @@ const AllowedEvents: AllowedEventsNames[] = [
     "merge_request.close",
     "merge_request.merge",
     "merge_request.review",
+    "merge_request.review.individual",
     "merge_request.ready_for_review",
     "merge_request.review.comments",
     "merge_request",
@@ -806,10 +808,26 @@ ${data.description}`;
         }
         log.info(`onMergeRequestReviewed ${this.roomId} ${this.instance}/${this.path} ${event.object_attributes.iid}`);
         this.validateMREvent(event);
-        if (event.object_attributes.action !== "approved" && event.object_attributes.action !== "unapproved") {
-            // Not interested.
+        this.debounceMergeRequestReview(
+            event.user,
+            event.object_attributes,
+            event.project,
+            {
+                commentCount: 0,
+                approved: "approved" === event.object_attributes.action,
+                skip: false,
+            }
+        );
+    }
+
+
+    public async onMergeRequestIndividualReview(event: IGitLabWebhookMREvent) {
+        if (this.hookFilter.shouldSkip('merge_request', 'merge_request.review.individual') || !this.matchesLabelFilter(event)) {
             return;
         }
+
+        log.info(`onMergeRequestReviewed ${this.roomId} ${this.instance}/${this.path} ${event.object_attributes.iid}`);
+        this.validateMREvent(event);
         this.debounceMergeRequestReview(
             event.user,
             event.object_attributes,

web/components/roomConfig/GitlabRepoConfig.tsx

@@ -97,7 +97,8 @@ const ConnectionConfiguration: FunctionComponent<ConnectionConfigurationProps<ne
                     <EventHookCheckbox enabledHooks={enabledHooks} parentEvent="merge_request" hookEventName="merge_request.open" onChange={toggleEnabledHook}>Opened</EventHookCheckbox>
                     <EventHookCheckbox enabledHooks={enabledHooks} parentEvent="merge_request" hookEventName="merge_request.close" onChange={toggleEnabledHook}>Closed</EventHookCheckbox>
                     <EventHookCheckbox enabledHooks={enabledHooks} parentEvent="merge_request" hookEventName="merge_request.merge" onChange={toggleEnabledHook}>Merged</EventHookCheckbox>
-                    <EventHookCheckbox enabledHooks={enabledHooks} parentEvent="merge_request" hookEventName="merge_request.review" onChange={toggleEnabledHook}>Reviewed</EventHookCheckbox>
+                    <EventHookCheckbox enabledHooks={enabledHooks} parentEvent="merge_request" hookEventName="merge_request.review" onChange={toggleEnabledHook}>Completed review</EventHookCheckbox>
+                    <EventHookCheckbox enabledHooks={enabledHooks} parentEvent="merge_request" hookEventName="merge_request.review.individual" onChange={toggleEnabledHook}>Single review</EventHookCheckbox>
                     <EventHookCheckbox enabledHooks={enabledHooks} parentEvent="merge_request" hookEventName="merge_request.ready_for_review" onChange={toggleEnabledHook}>Ready for review</EventHookCheckbox>
                 </ul>
                 <EventHookCheckbox enabledHooks={enabledHooks} hookEventName="push" onChange={toggleEnabledHook}>Pushes</EventHookCheckbox>