Fix commits url for bitbucket server

packages/backend-common/src/reading/BitbucketUrlReader.ts

@@ -161,13 +161,18 @@ export class BitbucketUrlReader implements UrlReader {
   }
 
   private async getLastCommitShortHash(url: string): Promise<string> {
-    const { name: repoName, owner: project, ref } = parseGitUrl(url);
+    const { resource, name: repoName, owner: project, ref } = parseGitUrl(url);
 
     let branch = ref;
     if (!branch) {
       branch = await getBitbucketDefaultBranch(url, this.config);
     }
-    const commitsApiUrl = `${this.config.apiBaseUrl}/repositories/${project}/${repoName}/commits/${branch}`;
+
+    const isHosted = resource === 'bitbucket.org';
+    // Bitbucket Server https://docs.atlassian.com/bitbucket-server/rest/7.9.0/bitbucket-rest.html#idp222
+    const commitsApiUrl = isHosted
+      ? `${this.config.apiBaseUrl}/repositories/${project}/${repoName}/commits/${branch}`
+      : `${this.config.apiBaseUrl}/projects/${project}/repos/${repoName}/commits`;
 
     const commitsResponse = await fetch(
       commitsApiUrl,
@@ -182,14 +187,26 @@ export class BitbucketUrlReader implements UrlReader {
     }
 
     const commits = await commitsResponse.json();
-    if (
-      commits &&
-      commits.values &&
-      commits.values.length > 0 &&
-      commits.values[0].hash
-    ) {
-      return commits.values[0].hash.substring(0, 12);
+    if (isHosted) {
+      if (
+        commits &&
+        commits.values &&
+        commits.values.length > 0 &&
+        commits.values[0].hash
+      ) {
+        return commits.values[0].hash.substring(0, 12);
+      }
+    } else {
+      if (
+        commits &&
+        commits.values &&
+        commits.values.length > 0 &&
+        commits.values[0].id
+      ) {
+        return commits.values[0].id.substring(0, 12);
+      }
     }
+
     throw new Error(`Failed to read response from ${commitsApiUrl}`);
   }
 }