Disable lock button when locked by another user

Disables the lock button when the current file is locked by another user

app/assets/javascripts/repository/components/blob_content_viewer.vue

@@ -157,11 +157,18 @@ export default {
     },
     canLock() {
       const { pushCode, downloadCode } = this.project.userPermissions;
+      const currentUsername = window.gon?.current_username;
+
+      if (this.pathLockedByUser && this.pathLockedByUser.username !== currentUsername) {
+        return false;
+      }
 
       return pushCode && downloadCode;
     },
-    isLocked() {
-      return this.project.pathLocks.nodes.some((node) => node.path === this.path);
+    pathLockedByUser() {
+      const pathLock = this.project.pathLocks.nodes.find((node) => node.path === this.path);
+
+      return pathLock ? pathLock.user : null;
     },
     showForkSuggestion() {
       const { createMergeRequestIn, forkProject } = this.project.userPermissions;
@@ -270,7 +277,7 @@ export default {
             :can-push-to-branch="blobInfo.canCurrentUserPushToBranch"
             :empty-repo="project.repository.empty"
             :project-path="projectPath"
-            :is-locked="isLocked"
+            :is-locked="Boolean(pathLockedByUser)"
             :can-lock="canLock"
           />
         </template>

app/assets/javascripts/repository/queries/blob_info.query.graphql

@@ -11,6 +11,10 @@ query getBlobInfo($projectPath: ID!, $filePath: String!, $ref: String!) {
       nodes {
         id
         path
+        user {
+          id
+          username
+        }
       }
     }
     repository {

app/controllers/projects_controller.rb

@@ -38,6 +38,7 @@ class ProjectsController < Projects::ApplicationController
     push_frontend_feature_flag(:highlight_js, @project, default_enabled: :yaml)
     push_frontend_feature_flag(:increase_page_size_exponentially, @project, default_enabled: :yaml)
     push_frontend_feature_flag(:new_dir_modal, @project, default_enabled: :yaml)
+    push_licensed_feature(:file_locks) if @project.present? && @project.licensed_feature_available?(:file_locks)
   end
 
   layout :determine_layout

ee/app/assets/javascripts/repository/components/lock_button.vue

@@ -37,11 +37,12 @@ export default {
   data() {
     return {
       lockLoading: false,
+      locked: this.isLocked,
     };
   },
   computed: {
     lockButtonTitle() {
-      return this.isLocked ? this.$options.i18n.unlock : this.$options.i18n.lock;
+      return this.locked ? this.$options.i18n.unlock : this.$options.i18n.lock;
     },
     lockConfirmText() {
       return sprintf(__('Are you sure you want to %{action} %{name}?'), {
@@ -65,13 +66,14 @@ export default {
           variables: {
             filePath: this.path,
             projectPath: this.projectPath,
-            lock: !this.isLocked,
+            lock: !this.locked,
           },
         })
         .catch((error) => {
           createFlash({ message: error, captureError: true, error });
         })
         .finally(() => {
+          this.locked = !this.locked;
           this.lockLoading = false;
         });
     },
@@ -80,7 +82,7 @@ export default {
 </script>
 
 <template>
-  <gl-button v-if="canLock" :loading="lockLoading" @click="onLockToggle">
+  <gl-button :disabled="!canLock" :loading="lockLoading" @click="onLockToggle">
     {{ lockButtonTitle }}
   </gl-button>
 </template>

ee/spec/frontend/repository/components/lock_button_spec.js

@@ -51,10 +51,10 @@ describe('LockButton component', () => {
 
     afterEach(() => confirmSpy.mockRestore());
 
-    it('does not render if canLock is set to false', () => {
+    it('disables the lock button if canLock is set to false', () => {
       createComponent({ canLock: false });
 
-      expect(findLockButton().exists()).toBe(false);
+      expect(findLockButton().props('disabled')).toBe(true);
     });
 
     it.each`

spec/frontend/repository/components/blob_content_viewer_spec.js

@@ -318,8 +318,14 @@ describe('Blob content viewer component', () => {
         repository: { empty },
       } = projectMock;
 
+      afterEach(() => {
+        delete gon.current_user_id;
+        delete gon.current_username;
+      });
+
       it('renders component', async () => {
         window.gon.current_user_id = 1;
+        window.gon.current_username = 'root';
 
         await createComponent({ pushCode, downloadCode, empty }, mount);
 
@@ -330,17 +336,22 @@ describe('Blob content viewer component', () => {
           deletePath: webPath,
           canPushCode: pushCode,
           canLock: true,
-          isLocked: false,
+          isLocked: true,
           emptyRepo: empty,
         });
       });
 
       it.each`
-        canPushCode | canDownloadCode | canLock
-        ${true}     | ${true}         | ${true}
-        ${false}    | ${true}         | ${false}
-        ${true}     | ${false}        | ${false}
-      `('passes the correct lock states', async ({ canPushCode, canDownloadCode, canLock }) => {
+        canPushCode | canDownloadCode | username   | canLock
+        ${true}     | ${true}         | ${'root'}  | ${true}
+        ${false}    | ${true}         | ${'root'}  | ${false}
+        ${true}     | ${false}        | ${'root'}  | ${false}
+        ${true}     | ${true}         | ${'peter'} | ${false}
+      `(
+        'passes the correct lock states',
+        async ({ canPushCode, canDownloadCode, username, canLock }) => {
+          gon.current_username = username;
+
           await createComponent(
             {
               pushCode: canPushCode,
@@ -351,7 +362,8 @@ describe('Blob content viewer component', () => {
           );
 
           expect(findBlobButtonGroup().props('canLock')).toBe(canLock);
-      });
+        },
+      );
 
       it('does not render if not logged in', async () => {
         isLoggedIn.mockReturnValueOnce(false);

spec/frontend/repository/mock_data.js

@@ -47,7 +47,13 @@ export const projectMock = {
   id: '1234',
   userPermissions: userPermissionsMock,
   pathLocks: {
-    nodes: [],
+    nodes: [
+      {
+        id: 'test',
+        path: simpleViewerMock.path,
+        user: { id: '123', username: 'root' },
+      },
+    ],
   },
   repository: {
     empty: false,