This commit introduces the hierarchical memory feature, allowing GEMI… (#327)

packages/cli/src/ui/hooks/useShowMemoryCommand.ts

@@ -0,0 +1,80 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { Message, MessageType } from '../types.js';
+import { Config } from '@gemini-code/server';
+import { getGeminiMdFilePaths } from '../../config/config.js';
+import { homedir } from 'os';
+import process from 'node:process';
+
+export const SHOW_MEMORY_COMMAND_NAME = '/showmemory';
+
+export function createShowMemoryAction(
+  config: Config | null,
+  addMessage: (message: Message) => void,
+) {
+  return async () => {
+    if (!config) {
+      addMessage({
+        type: MessageType.ERROR,
+        content: 'Configuration not available. Cannot show memory.',
+        timestamp: new Date(),
+      });
+      return;
+    }
+
+    const debugMode = config.getDebugMode();
+    const cwd = process.cwd();
+    const homeDir = homedir();
+
+    if (debugMode) {
+      console.log(`[DEBUG] Show Memory: CWD=${cwd}, Home=${homeDir}`);
+    }
+
+    const filePaths = await getGeminiMdFilePaths(cwd, homeDir, debugMode);
+
+    if (filePaths.length > 0) {
+      addMessage({
+        type: MessageType.INFO,
+        content: `The following GEMINI.md files are being used (in order of precedence):\n- ${filePaths.join('\n- ')}`,
+        timestamp: new Date(),
+      });
+    } else {
+      addMessage({
+        type: MessageType.INFO,
+        content: 'No GEMINI.md files found in the hierarchy.',
+        timestamp: new Date(),
+      });
+    }
+
+    const currentMemory = config.getUserMemory();
+
+    if (config.getDebugMode()) {
+      console.log(
+        `[DEBUG] Showing memory. Content from config.getUserMemory() (first 200 chars): ${currentMemory.substring(0, 200)}...`,
+      );
+    }
+
+    if (currentMemory && currentMemory.trim().length > 0) {
+      addMessage({
+        type: MessageType.INFO,
+        // Display with a clear heading, and potentially format for readability if very long.
+        // For now, direct display. Consider using Markdown formatting for code blocks if memory contains them.
+        content: `Current combined GEMINI.md memory content:\n\`\`\`markdown\n${currentMemory}\n\`\`\``,
+        timestamp: new Date(),
+      });
+    } else {
+      // This message might be redundant if filePaths.length === 0, but kept for explicitness
+      // if somehow memory is empty even if files were found (e.g., all files are empty).
+      addMessage({
+        type: MessageType.INFO,
+        content:
+          'No hierarchical memory (GEMINI.md) is currently loaded or memory is empty.',
+        timestamp: new Date(),
+      });
+    }
+  };
+}