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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { HistoryItemCompression, MessageType } from '../types.js';
import { CommandKind, SlashCommand } from './types.js';
export const compressCommand: SlashCommand = {
name: 'compress',
altNames: ['summarize'],
description: 'Compresses the context by replacing it with a summary.',
kind: CommandKind.BUILT_IN,
action: async (context) => {
const { ui } = context;
if (ui.pendingItem) {
ui.addItem(
{
type: MessageType.ERROR,
text: 'Already compressing, wait for previous request to complete',
},
Date.now(),
);
return;
}
const pendingMessage: HistoryItemCompression = {
type: MessageType.COMPRESSION,
compression: {
isPending: true,
originalTokenCount: null,
newTokenCount: null,
},
};
try {
ui.setPendingItem(pendingMessage);
const promptId = `compress-${Date.now()}`;
const compressed = await context.services.config
?.getGeminiClient()
?.tryCompressChat(promptId, true);
if (compressed) {
ui.addItem(
{
type: MessageType.COMPRESSION,
compression: {
isPending: false,
originalTokenCount: compressed.originalTokenCount,
newTokenCount: compressed.newTokenCount,
},
} as HistoryItemCompression,
Date.now(),
);
} else {
ui.addItem(
{
type: MessageType.ERROR,
text: 'Failed to compress chat history.',
},
Date.now(),
);
}
} catch (e) {
ui.addItem(
{
type: MessageType.ERROR,
text: `Failed to compress chat history: ${
e instanceof Error ? e.message : String(e)
}`,
},
Date.now(),
);
} finally {
ui.setPendingItem(null);
}
},
};
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