add function to extract ADO information from URL

packages/ado-npm-auth/src/utils/get-organization-from-feed-url.ts

@@ -1,3 +1,66 @@
+/**
+ * Extracts the organization and project details from a given Azure DevOps URL.
+ * The function differentiates between the "new style" URLs that use 'dev.azure.com'
+ * and "old style" URLs that use a subdomain of 'visualstudio.com'.
+ *
+ * @param {string} url - The Azure DevOps URL from which to extract details.
+ * @returns {Object} An object containing the `organization` and `project` extracted from the URL.
+ * @throws {Error} Throws an error if the URL is invalid, not in the expected format,
+ *                 or does not contain the necessary information for extraction.
+ * 
+ * @example
+ * // New style URL
+ * extractAdoDetails("https://dev.azure.com/contoso/WebsiteRedesign");
+ * // returns { organization: "contoso", project: "WebsiteRedesign" }
+ * 
+ * // Old style URL
+ * extractAdoDetails("https://contoso.visualstudio.com/WebsiteRedesign");
+ * // returns { organization: "contoso", project: "WebsiteRedesign" }
+ * 
+ * // Invalid URL
+ * extractAdoDetails("https://invalid.url.com");
+ * // throws Error
+ */
+const extractAdoDetails = (url: string) => {
+  try {
+    const parsedUrl = new URL(url);
+    const hostname = parsedUrl.hostname;
+    const pathname = parsedUrl.pathname;
+
+    // Check for new style URLs (dev.azure.com)
+    if (hostname.endsWith("dev.azure.com")) {
+      const pathSegments = pathname.split('/').filter(Boolean); // Remove empty strings from the split result
+      if (pathSegments.length >= 2) {
+        return {
+          organization: pathSegments[0],
+          project: pathSegments[1]
+        };
+      } else {
+        throw new Error("Not enough segments in path for a valid organization and project extraction.");
+      }
+    }
+
+    // Check for old style URLs (visualstudio.com)
+    if (hostname.endsWith("visualstudio.com")) {
+      const subdomain = hostname.split('.')[0];
+      const pathSegments = pathname.split('/').filter(Boolean);
+      if (subdomain && pathSegments.length >= 1) {
+        return {
+          organization: subdomain,
+          project: pathSegments[0]
+        };
+      } else {
+        throw new Error("Not enough segments in path or missing subdomain for a valid organization and project extraction.");
+      }
+    }
+
+    // If the URL does not match expected formats
+    throw new Error("URL format not recognized or does not contain enough information.");
+  } catch (error) {
+    throw new Error("Invalid URL or unsupported format");
+  }
+};
+
 /**
  * Get the ADO Org for a npm feed
  * @param {string} feedUrl URL of the feed to get the ADO organization from
@@ -6,21 +69,8 @@
  */
 export const getOrganizationFromFeedUrl = (feedUrl: string, defaultOrg = "") => {
   try {
-    const url = new URL(feedUrl);
-    const packagingIndex = url.pathname.indexOf("/_packaging");
-
-    if (packagingIndex > 0) {
-      // sometimes org is included in the path as the first item in the path
-      // after the initial "/"
-      // ex. "https://pkgs.dev.azure.com/foo/bar/_packaging/baz/npm/registry/" -> "foo"
-      // these are project-scoped feeds
-      return url.pathname.split("/")[1];
-    }
-
-    // otherwise feed is the first item in the host
-    // ex. "https://foo.pkgs.visualstudio.com/_packaging/npm-mirror/npm/registry" -> "foo"
-    // these are org-wide feeds
-    return url.host.split(".")[0];
+    const { organization } = extractAdoDetails(feedUrl)
+    return organization
   } catch (error) {
     return defaultOrg;
   }