Updated backends:list command. (#6519)

* Updated backends:list command w.r.t M2

* formatting file

* Added changes to backends:list

* resolved linter errors

Author: svnsairam

src/commands/frameworks-backends-list.ts

@@ -5,40 +5,67 @@ import * as gcp from "../gcp/frameworks";
 import { FirebaseError } from "../error";
 import { logger } from "../logger";
 import { bold } from "colorette";
-const Table = require("cli-table");
 
+const Table = require("cli-table");
+const COLUMN_LENGTH = 20;
+const TABLE_HEAD = [
+  "Backend Id",
+  "Repository Name",
+  "Location",
+  "URL",
+  "Created Date",
+  "Updated Date",
+];
 export const command = new Command("backends:list")
   .description("List backends of a Firebase project.")
-  .option("-l, --location <location>", "App Backend location", "us-central1")
+  .option("-l, --location <location>", "App Backend location", "-")
   .action(async (options: Options) => {
     const projectId = needProjectId(options);
     const location = options.location as string;
     const table = new Table({
-      head: ["Backend Id", "Repository Name", "URL", "Location", "Created Date", "Updated Date"],
+      head: TABLE_HEAD,
       style: { head: ["green"] },
     });
-
-    let backendsList;
+    table.colWidths = COLUMN_LENGTH;
+    const backendsList: gcp.ListBackendsResponse[] = [];
     try {
-      backendsList = await gcp.listBackends(projectId, location);
-      for (const backend of backendsList.backends) {
-        const entry = [
-          backend.name,
-          backend.codebase.repository,
-          backend.uri,
-          backend.createTime,
-          backend.updateTime,
-        ];
-        table.push(entry);
-      }
+      const backendsPerRegion = await gcp.listBackends(projectId, location);
+      backendsList.push(backendsPerRegion);
+      populateTable(backendsPerRegion, location, table);
+
+      logger.info();
       logger.info(`Backends for project ${bold(projectId)}`);
+      logger.info();
       logger.info(table.toString());
     } catch (err: any) {
       throw new FirebaseError(
-        `Unable to list backends present in project: ${projectId}. Please check the parameters you have provided.`,
+        `Unable to list backends present for project: ${projectId}. Please check the parameters you have provided.`,
         { original: err }
       );
     }
 
     return backendsList;
   });
+
+function populateTable(backendsLists: gcp.ListBackendsResponse, location: string, table: any) {
+  for (const backend of backendsLists.backends) {
+    const [location, , backendId] = backend.name.split("/").slice(3, 6);
+    const entry = [
+      backendId,
+      backend.codebase.repository?.split("/").pop(),
+      location,
+      backend.uri,
+      backend.createTime,
+      backend.updateTime,
+    ];
+    const newRow = entry.map((name) => {
+      const maxCellWidth = COLUMN_LENGTH - 2;
+      const chunks = [];
+      for (let i = 0; name && i < name.length; i += maxCellWidth) {
+        chunks.push(name.substring(i, i + maxCellWidth));
+      }
+      return chunks.join("\n");
+    });
+    table.push(newRow);
+  }
+}