Add initial support for Bitbucket Cloud scaffolding

.changeset/bitbucket-scaffolder.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-backend': minor
+---
+
+Add scaffolding support for Bitbucket Cloud and Server.

plugins/scaffolder-backend/src/scaffolder/stages/prepare/bitbucket.ts

@@ -26,10 +26,10 @@ import { Config } from '@backstage/config';
 
 export class BitbucketPreparer implements PreparerBase {
   private readonly privateToken: string;
-  private readonly user: string;
+  private readonly username: string;
 
   constructor(config: Config) {
-    this.user =
+    this.username =
       config.getOptionalString('scaffolder.bitbucket.api.username') ?? '';
     this.privateToken =
       config.getOptionalString('scaffolder.bitbucket.api.token') ?? '';
@@ -50,13 +50,7 @@ export class BitbucketPreparer implements PreparerBase {
     const templateId = template.metadata.name;
 
     const repo = GitUriParser(location);
-    let repositoryCheckoutUrl;
-    // could be refactor once https://github.com/IonicaBizau/git-url-parse/pull/117 has been published
-    if (repo.source === 'bitbucket.org') {
-      repositoryCheckoutUrl = `${repo.protocol}://${repo.resource}/${repo.owner}/${repo.name}`;
-    } else {
-      repositoryCheckoutUrl = `${repo.protocol}://${repo.resource}/scm/${repo.owner}/${repo.name}`;
-    }
+    const repositoryCheckoutUrl = repo.toString('https');
 
     const tempDir = await fs.promises.mkdtemp(
       path.join(workingDirectory, templateId),
@@ -72,7 +66,7 @@ export class BitbucketPreparer implements PreparerBase {
           fetchOpts: {
             callbacks: {
               credentials: () =>
-                Cred.userpassPlaintextNew(this.user, this.privateToken),
+                Cred.userpassPlaintextNew(this.username, this.privateToken),
             },
           },
         }

plugins/scaffolder-backend/src/scaffolder/stages/publish/bitbucket.ts

@@ -50,7 +50,7 @@ export class BitbucketPublisher implements PublisherBase {
     values: RequiredTemplateValues & Record<string, JsonValue>,
   ): Promise<PublisherResult> {
     const [project, name] = values.storePath.split('/');
-    if (this.host === 'bitbucket.org') {
+    if (this.host === 'https://bitbucket.org') {
       return this.createBitbucketCloudRepository(project, name);
     }
     return this.createBitbucketServerRepository(project, name);
@@ -60,9 +60,39 @@ export class BitbucketPublisher implements PublisherBase {
     project: string,
     name: string,
   ): Promise<PublisherResult> {
-    throw new Error(
-      `Failed to create ${project}/${name} on bitbucket.org which is currently not supported`,
-    );
+    let response: Response;
+    const buffer = Buffer.from(`${this.username}:${this.token}`, 'utf8');
+
+    const options: RequestInit = {
+      method: 'POST',
+      body: JSON.stringify({}),
+      headers: {
+        Authorization: `Basic ${buffer.toString('base64')}`,
+        'Content-Type': 'application/json',
+      },
+    };
+    try {
+      response = await fetch(
+        `https://api.bitbucket.org/2.0/repositories/${project}/${name}`,
+        options,
+      );
+    } catch (e) {
+      throw new Error(`Unable to create repository, ${e}`);
+    }
+    if (response.status === 200) {
+      const r = await response.json();
+      let remoteUrl = '';
+      for (const link of r.links.clone) {
+        if (link.name === 'https') {
+          remoteUrl = link.href;
+        }
+      }
+
+      // TODO use the urlReader to get the defautl branch
+      const catalogInfoUrl = `${r.links.html.href}/src/master/catalog-info.yaml`;
+      return { remoteUrl, catalogInfoUrl };
+    }
+    throw new Error(`Not a valid response code ${await response.text()}`);
   }
 
   private async createBitbucketServerRepository(