feat: Multi-Directory Workspace Support (part2: add "directory" command) (#5241)

packages/cli/src/ui/commands/directoryCommand.tsx

@@ -0,0 +1,150 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { SlashCommand, CommandContext, CommandKind } from './types.js';
+import { MessageType } from '../types.js';
+import * as os from 'os';
+import * as path from 'path';
+
+export function expandHomeDir(p: string): string {
+  if (!p) {
+    return '';
+  }
+  let expandedPath = p;
+  if (p.toLowerCase().startsWith('%userprofile%')) {
+    expandedPath = os.homedir() + p.substring('%userprofile%'.length);
+  } else if (p.startsWith('~')) {
+    expandedPath = os.homedir() + p.substring(1);
+  }
+  return path.normalize(expandedPath);
+}
+
+export const directoryCommand: SlashCommand = {
+  name: 'directory',
+  altNames: ['dir'],
+  description: 'Manage workspace directories',
+  kind: CommandKind.BUILT_IN,
+  subCommands: [
+    {
+      name: 'add',
+      description:
+        'Add directories to the workspace. Use comma to separate multiple paths',
+      kind: CommandKind.BUILT_IN,
+      action: async (context: CommandContext, args: string) => {
+        const {
+          ui: { addItem },
+          services: { config },
+        } = context;
+        const [...rest] = args.split(' ');
+
+        if (!config) {
+          addItem(
+            {
+              type: MessageType.ERROR,
+              text: 'Configuration is not available.',
+            },
+            Date.now(),
+          );
+          return;
+        }
+
+        const workspaceContext = config.getWorkspaceContext();
+
+        const pathsToAdd = rest
+          .join(' ')
+          .split(',')
+          .filter((p) => p);
+        if (pathsToAdd.length === 0) {
+          addItem(
+            {
+              type: MessageType.ERROR,
+              text: 'Please provide at least one path to add.',
+            },
+            Date.now(),
+          );
+          return;
+        }
+
+        if (config.isRestrictiveSandbox()) {
+          return {
+            type: 'message' as const,
+            messageType: 'error' as const,
+            content:
+              'The /directory add command is not supported in restrictive sandbox profiles. Please use --include-directories when starting the session instead.',
+          };
+        }
+
+        const added: string[] = [];
+        const errors: string[] = [];
+
+        for (const pathToAdd of pathsToAdd) {
+          try {
+            workspaceContext.addDirectory(expandHomeDir(pathToAdd.trim()));
+            added.push(pathToAdd.trim());
+          } catch (e) {
+            const error = e as Error;
+            errors.push(`Error adding '${pathToAdd.trim()}': ${error.message}`);
+          }
+        }
+
+        if (added.length > 0) {
+          const gemini = config.getGeminiClient();
+          if (gemini) {
+            await gemini.addDirectoryContext();
+          }
+          addItem(
+            {
+              type: MessageType.INFO,
+              text: `Successfully added directories:\n- ${added.join('\n- ')}`,
+            },
+            Date.now(),
+          );
+        }
+
+        if (errors.length > 0) {
+          addItem(
+            {
+              type: MessageType.ERROR,
+              text: errors.join('\n'),
+            },
+            Date.now(),
+          );
+        }
+      },
+    },
+    {
+      name: 'show',
+      description: 'Show all directories in the workspace',
+      kind: CommandKind.BUILT_IN,
+      action: async (context: CommandContext) => {
+        const {
+          ui: { addItem },
+          services: { config },
+        } = context;
+        if (!config) {
+          addItem(
+            {
+              type: MessageType.ERROR,
+              text: 'Configuration is not available.',
+            },
+            Date.now(),
+          );
+          return;
+        }
+        const workspaceContext = config.getWorkspaceContext();
+        const directories = workspaceContext.getDirectories();
+        const directoryList = directories.map((dir) => `- ${dir}`).join('\n');
+        addItem(
+          {
+            type: MessageType.INFO,
+            text: `Current workspace directories:\n${directoryList}`,
+          },
+          Date.now(),
+        );
+      },
+    },
+  ],
+};