Add topics input to publish:github action

This change adds an array input of topics to attach on a repository upon
creation.

Signed-off-by: Crevil <bjoern.soerensen@gmail.com>

plugins/scaffolder-backend/src/scaffolder/__mocks__/@octokit/rest/index.ts

@@ -19,6 +19,7 @@ export const mockGithubClient = {
     createInOrg: jest.fn(),
     createForAuthenticatedUser: jest.fn(),
     addCollaborator: jest.fn(),
+    replaceAllTopics: jest.fn(),
   },
   users: {
     getByUsername: jest.fn(),

plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.test.ts

@@ -341,6 +341,39 @@ describe('publish:github', () => {
     ]);
   });
 
+  it('should add topics when provided', async () => {
+    mockGithubClient.users.getByUsername.mockResolvedValue({
+      data: { type: 'User' },
+    });
+
+    mockGithubClient.repos.createForAuthenticatedUser.mockResolvedValue({
+      data: {
+        clone_url: 'https://github.com/clone/url.git',
+        html_url: 'https://github.com/html/url',
+      },
+    });
+
+    mockGithubClient.repos.replaceAllTopics.mockResolvedValue({
+      data: {
+        names: ['node.js'],
+      },
+    });
+
+    await action.handler({
+      ...mockContext,
+      input: {
+        ...mockContext.input,
+        topics: ['node.js'],
+      },
+    });
+
+    expect(mockGithubClient.repos.replaceAllTopics).toHaveBeenCalledWith({
+      owner: 'owner',
+      repo: 'repo',
+      names: ['node.js'],
+    });
+  });
+
   it('should call output with the remoteUrl and the repoContentsUrl', async () => {
     mockGithubClient.users.getByUsername.mockResolvedValue({
       data: { type: 'User' },

plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/github.ts

@@ -48,6 +48,7 @@ export function createPublishGithubAction(options: {
     sourcePath?: string;
     repoVisibility: 'private' | 'internal' | 'public';
     collaborators: Collaborator[];
+    topics?: string[];
   }>({
     id: 'publish:github',
     description:
@@ -99,6 +100,14 @@ export function createPublishGithubAction(options: {
               },
             },
           },
+          topics: {
+            title: 'Topics',
+            description: 'Uppercase letters no allowed',
+            type: 'array',
+            items: {
+              type: 'string',
+            },
+          },
         },
       },
       output: {
@@ -122,6 +131,7 @@ export function createPublishGithubAction(options: {
         access,
         repoVisibility = 'private',
         collaborators,
+        topics,
       } = ctx.input;
 
       const { owner, repo, host } = parseRepoUrl(repoUrl);
@@ -215,6 +225,18 @@ export function createPublishGithubAction(options: {
         }
       }
 
+      if (topics) {
+        try {
+          await client.repos.replaceAllTopics({
+            owner,
+            repo,
+            names: topics,
+          });
+        } catch (e) {
+          ctx.logger.warn(`Skipping topics ${topics.join(' ')}, ${e.message}`);
+        }
+      }
+
       const remoteUrl = newRepo.clone_url;
       const repoContentsUrl = `${newRepo.html_url}/blob/master`;