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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { useCallback, useMemo } from 'react';
import { type PartListUnion } from '@google/genai';
import { UseHistoryManagerReturn } from './useHistoryManager.js';
import { Config } from '@gemini-code/server';
import { Message, MessageType, HistoryItemWithoutId } from '../types.js';
import { createShowMemoryAction } from './useShowMemoryCommand.js';
import { addMemoryEntry } from '../../config/memoryUtils.js';
export interface SlashCommand {
name: string;
altName?: string;
description?: string;
action: (mainCommand: string, subCommand?: string, args?: string) => void;
}
/**
* Hook to define and process slash commands (e.g., /help, /clear).
*/
export const useSlashCommandProcessor = (
config: Config | null, // Add config here
addItem: UseHistoryManagerReturn['addItem'],
clearItems: UseHistoryManagerReturn['clearItems'],
refreshStatic: () => void,
setShowHelp: React.Dispatch<React.SetStateAction<boolean>>,
onDebugMessage: (message: string) => void,
openThemeDialog: () => void,
performMemoryRefresh: () => Promise<void>, // Add performMemoryRefresh prop
toggleCorgiMode: () => void,
) => {
const addMessage = useCallback(
(message: Message) => {
// Convert Message to HistoryItemWithoutId
const historyItemContent: HistoryItemWithoutId = {
type: message.type, // MessageType enum should be compatible with HistoryItemWithoutId string literal types
text: message.content,
};
addItem(historyItemContent, message.timestamp.getTime());
},
[addItem],
);
const showMemoryAction = useCallback(async () => {
const actionFn = createShowMemoryAction(config, addMessage);
await actionFn();
}, [config, addMessage]);
const addMemoryAction = useCallback(
async (_mainCommand: string, _subCommand?: string, args?: string) => {
if (!args || args.trim() === '') {
addMessage({
type: MessageType.ERROR,
content: 'Usage: /memory add <text to remember>',
timestamp: new Date(),
});
return;
}
try {
await addMemoryEntry(args);
addMessage({
type: MessageType.INFO,
content: `Successfully added to memory: "${args}"`,
timestamp: new Date(),
});
await performMemoryRefresh(); // Refresh memory to reflect changes
} catch (e) {
const errorMessage = e instanceof Error ? e.message : String(e);
addMessage({
type: MessageType.ERROR,
content: `Failed to add memory: ${errorMessage}`,
timestamp: new Date(),
});
}
},
[addMessage, performMemoryRefresh],
);
const slashCommands: SlashCommand[] = useMemo(
() => [
{
name: 'help',
altName: '?',
description: 'for help on gemini-code',
action: (_mainCommand, _subCommand, _args) => {
onDebugMessage('Opening help.');
setShowHelp(true);
},
},
{
name: 'clear',
description: 'clear the screen',
action: (_mainCommand, _subCommand, _args) => {
onDebugMessage('Clearing terminal.');
clearItems();
console.clear();
refreshStatic();
},
},
{
name: 'theme',
description: 'change the theme',
action: (_mainCommand, _subCommand, _args) => {
openThemeDialog();
},
},
{
name: 'memory',
description:
'Manage memory. Usage: /memory <show|refresh|add|delete_last|delete_all_added> [text for add]',
action: (mainCommand, subCommand, args) => {
switch (subCommand) {
case 'show':
showMemoryAction();
break;
case 'refresh':
performMemoryRefresh();
break;
case 'add':
addMemoryAction(mainCommand, subCommand, args);
break;
default:
addMessage({
type: MessageType.ERROR,
content: `Unknown /memory command: ${subCommand}. Available: show, refresh, add`,
timestamp: new Date(),
});
}
},
},
{
name: 'corgi',
action: (_mainCommand, _subCommand, _args) => {
toggleCorgiMode();
},
},
{
name: 'quit',
altName: 'exit',
description: 'exit the cli',
action: (_mainCommand, _subCommand, _args) => {
onDebugMessage('Quitting. Good-bye.');
process.exit(0);
},
},
],
[
onDebugMessage,
setShowHelp,
refreshStatic,
openThemeDialog,
clearItems,
performMemoryRefresh,
showMemoryAction,
addMemoryAction,
addMessage,
toggleCorgiMode,
],
);
const handleSlashCommand = useCallback(
(rawQuery: PartListUnion): boolean => {
if (typeof rawQuery !== 'string') {
return false;
}
const trimmed = rawQuery.trim();
if (!trimmed.startsWith('/') && !trimmed.startsWith('?')) {
return false;
}
const userMessageTimestamp = Date.now();
addItem({ type: MessageType.USER, text: trimmed }, userMessageTimestamp);
let subCommand: string | undefined;
let args: string | undefined;
const commandToMatch = (() => {
if (trimmed.startsWith('?')) {
return 'help'; // No subCommand or args for '?' acting as help
}
// For other slash commands like /memory add foo
const parts = trimmed.substring(1).trim().split(/\s+/);
if (parts.length > 1) {
subCommand = parts[1];
}
if (parts.length > 2) {
args = parts.slice(2).join(' ');
}
return parts[0]; // This is the main command name
})();
const mainCommand = commandToMatch;
for (const cmd of slashCommands) {
if (mainCommand === cmd.name || mainCommand === cmd.altName) {
cmd.action(mainCommand, subCommand, args);
return true;
}
}
addMessage({
type: MessageType.ERROR,
content: `Unknown command: ${trimmed}`,
timestamp: new Date(),
});
return true;
},
[addItem, slashCommands, addMessage],
);
return { handleSlashCommand, slashCommands };
};
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